DEVICE FOR HOLDING A BAIT

Description

[0001] The invention relates to a device for holding a bait for animals, in particular pests such as rodents, insects, etc.

[0002] Such devices, as known, for example, from DE 10 2014 102034 A1, DE 928 497 C or FR 2 516 747 A1, are used for pest control, i.e., in particular for

[0003] Control of rodents, such as mice and rats, and insects, such as cockroaches, which inhabit water-filled channels and pipes, i.e., in particular sewage, rainwater, or wastewater drains and / or cable ducts, or corresponding sewer or pipe shafts, i.e., generally in water-carrying facilities, and can cause considerable damage there, e.g., to wastewater systems and other infrastructure. Appropriate devices therefore typically hold pest-specific baits containing special poisons or active ingredients that kill the pests in various ways and / or prevent their reproduction, and / or contain attractants that lure the respective pests.

[0004] The poisons, attractants, or active ingredients contained in the baits generally pose a potential hazard to humans and the environment, so care must be taken to ensure that they do not enter and contaminate the water flowing through the relevant canals or sewer shafts. However, this can occur with conventional devices when there are large volumes of water and thus high water levels in the canals or sewer shafts, such as after heavy rainfall.

[0005] The invention is therefore based on the objective of providing an improved device for holding bait for animals, in particular pests such as rodents, insects, etc.

[0006] The problem is solved by a device of the type mentioned at the outset, which, according to the invention, is characterized by a housing part that can be inserted into a sewer shaft, in particular a sewer shaft or a cable duct shaft, and which has at least one receiving space bounded by at least one wall, in particular at least one housing part wall, wherein at least one through-opening is formed in the at least one wall, through which an animal can reach at least one bait arranged in the receiving space, and wherein the device has at least one splash guard element to protect against the ingress of water into the receiving space bounded by the housing part in the event of a sudden rise in the water level in a sewer shaft.

[0007] The device described herein serves to hold bait for animals, i.e., in particular for pests such as rodents, e.g., mice and rats, and / or insects, e.g., beetles and cockroaches, or other animals that may be present in a sewer shaft, such as small bears, e.g., raccoons, etc. Such bait therefore contains certain substances, typically pest-specific, such as poisons or active ingredients, which cause the death of pests and / or prevent their reproduction in various ways. Alternatively or additionally, such bait may also contain substances serving as attractants, possibly pest-specific, which attract animals. Hereinafter, the term "pest" is used. This generally refers to animals that are present, at least temporarily, in water-carrying installations, i.e., in a sewer system or similar.in a sewer shaft. This includes in particular rodents, such as mice, rats, etc., and / or insects, such as beetles, cockroaches, etc., and / or smaller mammals, such as bears, e.g., raccoons.

[0008] The device according to the invention comprises a housing part. The housing part can be inserted into a channel or manhole, such as a sewer manhole and / or a cable duct. The channel or manhole typically contains water or wastewater, or may be at least temporarily filled with water or wastewater. Hereinafter, only the term "manhole" is used. This refers to a part of a water-carrying system, such as a sewer system for water, i.e., wastewater, rainwater, sewage, or supply lines, etc.

[0009] The housing part is typically, but not necessarily, hollow and cylindrical. The housing part has a typically, but not necessarily, cylindrical receiving chamber. This receiving chamber typically accommodates at least one lure and, if applicable, additional functional components of the device.

[0010] The housing component can be closed, for example on one end, by means of a cover element, or it can be closed entirely, so that access to the receiving chamber can be gained by removing the cover element. The cover element can have a threaded section, and the housing component can have a corresponding threaded section, so that the cover element can be screwed to the housing component.

[0011] The receiving space on the housing side is bounded by at least one wall. A wall bounding the receiving space is generally one that defines the outer or inner contour of the receiving space.

[0012] An example of such a wall is a housing partial wall, i.e., a wall defining the outer or inner contour of the housing part. If the housing part comprises several housing partial walls, these can be arranged or configured at angles to each other, depending on the specific geometric design of the housing part. Certain housing partial walls, which typically run vertically (essentially) in the proper installation state of the device in a duct, can form side walls of the housing part; certain housing partial walls, which typically run horizontally (essentially) in the proper installation state of the device in a duct, can form the top or bottom walls of the housing part.

[0013] A wall delimiting the receiving space on the housing part side can be not only the corresponding housing part walls but also a wall of a connecting component that can be connected to or is connected to the housing part. A wall of a connecting component can also be a wall defining the outer or inner contour of the receiving space. A connecting component can, for example, be a receiving chamber that can be connected to or is connected to the housing part, in which various functional components of the device, in particular electrical and / or electronic functional components and / or lures, can be arranged or are arranged.

[0014] At least one wall bordering the receiving chamber has at least one opening through which pests can reach at least one bait located within the receiving chamber. Such an opening thus provides pests with access to the receiving chamber within the housing section. Naturally, pests can also exit the receiving chamber through such an opening. Therefore, such an opening also provides pests with an exit from the receiving chamber within the housing section.

[0015] At least one through-opening on the housing wall side can be surrounded, at least partially, by a splash guard or spray protection element to protect against the ingress of water into the receiving space bounded by the housing wall side due to splashing or spraying. Such a splash guard or spray protection element, typically roof-shaped, can be arranged as a separate component on the housing wall or formed integrally with it.

[0016] Through-openings on the housing part wall side can be formed in the area of ​​a section of the housing part that has an outer circumference that is larger compared to other sections of the housing part.

[0017] Naturally, it is possible for several such passageways to be present. These passageways can be evenly or unevenly distributed in terms of their position, i.e., circumferentially and / or vertically, relative to a given geometric design of the housing component. The passageways do not necessarily have to be identical in their geometric design, i.e., their dimensions or shape. Therefore, pest-specific passageways, i.e., certain passageways for specific pests, can be provided.

[0018] In this context, it should be mentioned that a corresponding passage opening can, of course, also comprise several interconnected passage opening sections with geometrically and structurally different designs. Such passage opening sections can be designed to target specific pests.

[0019] Overall, the design of corresponding openings in the walls represents a simple yet reliable principle for a device to hold bait, allowing pests access to the receiving space within the housing, and specifically to the bait within that space. Since the pests can easily leave the housing, for example after taking a bite, through these openings, they typically do not perceive the housing as a trap. This could be problematic, as it might prevent them from accessing the housing again.

[0020] In the following, suitable embodiments of the device in connection with the formation of corresponding through-openings are briefly discussed again: Through-openings limited to the wall side can be formed in a housing part wall that forms a side wall or part of a side wall of the housing part. In the case of a (hollow) cylindrical housing part, this means that corresponding through-openings can be formed in the outer surface of the housing part. Alternatively or additionally, through-openings limited to the wall side can also be formed in a housing part wall that forms a top or bottom wall or part of a top or bottom wall of the housing part. In the case of a (hollow) cylindrical housing part, this means that corresponding through-openings can be formed in an end face of the housing part.The term "ceiling wall" also includes an upper cover element formed within a ceiling wall, through which access (from above) to the receiving space on the housing side is possible. The term "floor wall" also includes a lower cover element formed within a floor wall, through which access (from below) to the receiving space on the housing side is possible.

[0021] It was further mentioned that corresponding wall-bounded through-openings can be formed in a wall of a receiving chamber that can be connected to or is connected to the housing part. These through-openings can be formed, in particular, in a receiving chamber wall forming a side wall, a receiving chamber wall forming a bottom wall, and / or a receiving chamber wall forming a top wall. Here, too, the term "top wall" includes an upper cover element formed within a top wall, through which access (from above) into the receiving chamber is possible, and the term "bottom wall" includes a lower cover element formed within a bottom wall, through which access (from below) into the receiving chamber is possible.

[0022] One embodiment of the device consists of arranging or forming at least one bait platform in the housing part. A bait platform typically represents a housing partial wall, in particular a housing partial wall forming a bottom wall of the housing part. At least one additional through-opening can also be formed in such a bait platform. Such a bait platform can thus define at least one through-opening through which a pest can reach at least one bait arranged in the receiving space.

[0023] Regardless of whether the bait platform has a through-opening or not, it typically defines a lower section of the housing below it and an upper section above it. A bait is typically positioned in the upper section of the housing. The bait may, for example, be placed directly on the bait platform. Alternatively or additionally, a bait may be held in place by a bait holding device or in a corresponding receiving chamber. A bait holding device or receiving chamber is also typically located above the bait platform.

[0024] To reach a bait typically located in the upper part of the housing, a pest must first enter the housing. The pest can do this by entering the housing through a suitable opening on the wall side, i.e., possibly on the bait platform side. After taking the bait, the pest can leave the housing again by passing through similar openings.

[0025] The housing section can, of course, contain several, i.e., at least two, bait platforms. The individual bait platforms are typically arranged above or below one another. Depending on the geometry of the respective bait platforms, several bait platforms can be arranged parallel, at least in sections. A gap defining an intermediate plane is typically formed between two (immediately) adjacent bait platforms. Each gap can be accessed via a wall opening, typically at least laterally. The individual gaps need not be identical in shape, volume, etc., but can be designed differently. This applies to the exemplary case of more than two bait platforms and thus at least two corresponding gaps.

[0026] The presence of multiple bait platforms and thus multiple spaces allows for a larger number of baits to be placed in the housing section, as baits can be arranged on several levels. This also means the housing section can be frequented by more pests. Furthermore, the mechanical stability, particularly the rigidity, of the housing section can be increased by the presence of multiple bait platforms and thus multiple spaces. The housing section can be further reinforced by the bait platforms arranged within it.

[0027] The respective spaces can communicate with each other via the respective bait platform-side openings, if present; in this case, there is a passage from a "lowest" bait platform to a "top" bait platform and vice versa.

[0028] The spaces between the components can cause a flow-related "calming," or more generally, an influence on the flow of water rising within the housing section. The water flowing into and rising within the housing section must therefore make its way upwards through several intermediate levels, which typically leads to a "calming" of the water flow. This applies particularly to an embodiment of the device with multiple bait platforms, each with at least one through-opening on the bait platform side. In such an embodiment, each bait platform can also be provided, at least partially, with a surface structure that influences the flow, particularly the type or velocity, of the water flowing along it or rising within the housing section, for example, in the form of flow-influencing ribs and / or grooves.

[0029] If present, the respective through-openings defined by the bait platforms can be arranged offset from one another. For example, at least one through-opening on the bait platform side of a first bait platform can be offset from at least one through-opening on the bait platform side of another bait platform located adjacent to the first. A through-opening of a first bait platform can, for example, be located in an edge region of the first bait platform, and a through-opening of a second bait platform adjacent to the first bait platform can be located in an oppositely arranged edge region of the second bait platform. The offset arrangement of the respective through-openings also allows for the "calming," or more generally, the influencing of the flow, of water rising in the housing section, e.g., in a meandering pattern.The staggered arrangement of the respective passage openings also facilitates the movement of a pest between the respective gaps or intermediate levels.

[0030] At least one bait platform can be designed, at least in sections, with at least one bait platform segment that is inclined, curved, or bent relative to at least one other, particularly adjacent, bait platform. Such inclined, curved, or bent trajectories of the bait platforms can also influence the flow of water rising within the housing section. Furthermore, inclined, curved, or bent trajectories of the bait platforms can act as ramps, facilitating the ascent and descent of pests between the respective spaces or intermediate levels.

[0031] As a further measure to influence the flow of water rising within the housing section, at least one bait platform can be designed, at least in sections, with bore-like openings or perforations. These openings, generally resembling a perforated (sheet metal) structure, can dampen and thus calm the flow of rising water. The openings are present as an alternative or supplement to existing through-holes on the bait platform and differ from these through-holes primarily in their size, i.e., their diameter; the openings are small compared to the existing through-holes. For example, rounded openings can have a diameter between 50 µm and 3 mm. Naturally, various openings with different geometries can be present.

[0032] In the case of at least one bait platform with at least one opening on the bait platform side, i.e., regardless of whether multiple bait platforms are provided, it must be noted that when water flows into or rises into the housing part, a back pressure develops within the housing part due to its volume (internal volume) and its tightness. This back pressure opposes the flowing or rising water. This occurs because the air inside the housing part is compressed by the inflow and rising water. Consequently, the rising water within the housing part becomes increasingly difficult due to the back pressure that develops within it.This principle naturally also applies when multiple bait platforms are present, so that when the water rising in the housing part reaches a certain bait platform, it encounters such high counter-pressure that it can no longer rise further with the given current.

[0033] In the case of at least one bait platform with at least one opening on the bait platform side, i.e., fundamentally independent of the provision of multiple bait platforms, it is also conceivable that the bait platform, or at least one of them, extends at least partially through the shell in a spiral or helical shape. A pest that has entered the shell can easily move within it via a bait platform shaped in such a spiral or helical shape – similar to a spiral staircase – for example, to reach a bait. Spiral or helical bait platforms can also influence the flow of water rising within the shell. In the case of multiple bait platforms, it is possible that one or more bait platforms are shaped, at least partially, with a corresponding spiral or helical course.

[0034] According to a particularly advantageous embodiment of the device, at least one locking element may be present. The locking element is movably mounted relative to the housing part. The mounting of the locking element typically includes a captive arrangement or connection of the locking element to the housing part. The locking element is movable into an open position in which the at least one or at least one wall-bounded through-opening is released. In the open position, the locking element is typically moved away from the at least one through-opening such that the at least one through-opening is released. Thus, a pest can pass through the through-opening in the open position to enter or exit the housing part.The locking element is furthermore movable into a closed position in which the at least one or at least one wall-bounded through-opening is not released, i.e., closed. In the closed position, the locking element is typically moved against or over the at least one through-opening in such a way that the at least one through-opening is not released. Therefore, a pest cannot pass through the through-opening in the closed position to enter or exit the housing part. In the closed position, the locking element typically seals or closes the at least one through-opening hermetically.

[0035] It is essential that the receiving chamber of the housing part, when the locking mechanism is closed, is typically hermetically sealed off from the surrounding environment, as mentioned above. This prevents water from entering the receiving chamber, or generally the housing part, in the closed position, for example, due to flooding or surges. This eliminates the possibility of water contamination with substances contained in baits, i.e., poisons, attractants, or active ingredients, located within the housing part. The movement of the locking mechanism from the closed to the open position can be induced in various ways. This will be discussed in more detail later.

[0036] In one embodiment of the device with multiple wall-side through-openings, each through-opening can be closed by its own locking element. However, it is also possible for several or all through-openings to be closed by a single, common locking element. Such a locking element typically has several locking sections, each of which, in the closed position, closes its respective through-opening.

[0037] If multiple locking elements are present, at least two locking elements can be motionally coupled via at least one coupling element such that they can be moved together into or towards a respective closed position, and vice versa. This can be achieved, for example, via a coupling element that couples a locking element (section) associated with a passage opening on the bottom wall or bait platform side with a locking element (section) associated with a passage opening on the top wall side, or a locking element (section) associated with a passage opening on the side wall side with another locking element (section) associated with a passage opening on the opposite side wall side. Such coupling elements can, for example, be a coupling rod.

[0038] For the described embodiment of the device with at least one through-opening on the bait platform side, at least one closing element can, of course, also be movably mounted relative to at least one bait platform. The closing element is movable into an open position in which the at least one through-opening on the bait platform side is released, i.e., it is typically moved away from the at least one bait platform in such a way that the at least one through-opening bounded on the bait platform side is released, and into a closed position in which the at least one through-opening on the bait platform side is not released, i.e., closed, i.e., it is typically moved against or over the at least one bait platform in such a way that the at least one through-opening bounded on the bait platform side is closed.The described principle of a hermetically sealing closure of a through-opening via a closing element moved into a closed position applies equally to through-openings on the bait platform side.

[0039] The following are examples of different ways in which a locking element can be pivotally mounted relative to the housing part or relative to at least one through-opening: The at least one locking element can, for example, be pivotably mounted relative to the housing part, pivoting into an open position in which the at least one through-opening bounded by the housing wall is open, and pivoting into a closed position in which the at least one through-opening bounded by the housing wall is closed. The locking element can be pivotably mounted directly on the housing part. However, the locking element can also be pivotally mounted indirectly on the housing part via at least one component pivotally mounted on the housing part, for example, in the form of a pivot arm.

[0040] The at least one locking element can also be slidably mounted relative to the housing part, particularly by linear guidance, wherein the locking element is slidable into an open position in which the at least one through-opening bounded on the wall side is released, and into a closed position in which the at least one through-opening bounded on the wall side is closed. The locking element can be slidably mounted directly on the housing part. However, the locking element can also be slidably mounted indirectly on the housing part via at least one component mounted on the housing part, for example in the form of a guide section (e.g., a ramp-like section) along which the locking element is slidably mounted.

[0041] In general, at least one direct or indirect housing-side guide section and at least one locking-body-side guide element can be present, wherein the at least one housing-side guide section interacts with the at least one locking-body-side guide element to form a guide, in particular a linearly guided, movable guide for a locking body between the open and closed positions, and vice versa. The interaction of corresponding housing-side guide sections with corresponding locking-body-side guide elements enables linear guidance of a locking body. A housing-side guide section can be formed on an outer and / or inner surface of the housing part. Housing-side guide sections can, for example, be guide rail receptacles, and locking-body-side guide elements can, for example, be...be designed as guide rails or guide bridges, or vice versa.

[0042] Regardless of the specific type of movable mounting of a locking element, it can be mounted in a reversible or irreversible manner, allowing movement between the open and closed positions. With reversible mounting, the locking element in the open position can move to the closed position on its own, and vice versa. With irreversible mounting, the locking element in the closed position is held, in particular releasably, by at least one locking element holding device. In this case, a locking element in the closed position cannot move to the open position on its own.

[0043] A corresponding locking element holding device can comprise at least one mechanical and / or magnetic holding element on the housing side and / or on the locking element side, which is configured to mechanically and / or magnetically hold the locking element in the closed position. The mechanical or magnetic holding elements on the housing side and / or on the locking element side can interact in such a way that the locking element is securely held in the closed position and cannot be easily released from it.

[0044] A suitable mechanical retaining device can, for example, include latching or snapping elements that mechanically secure the locking mechanism in the closed position. These latching or snapping elements can be, for example, projections and corresponding recesses or undercuts. Depending on the geometric design of the latching or snapping elements, the resulting retention can be either removable (without damage or destruction) or permanent.

[0045] A suitable magnetic retaining device can, for example, include magnetic elements, particularly permanent magnets, which, due to magnetic interaction, magnetically retain the locking element in the closed position. In this context, it is conceivable, for example, that a magnetic element on the housing side is arranged such that it exerts a magnetic force on a magnetic element on the locking element side, holding the locking element in the closed position, when the locking element approaches or is in the closed position. The magnetic force should not be so strong that a locking element in the open position is moved into the closed position solely by this force. If the locking element is made of a magnetic or magnetizable material, magnetic elements on the locking element side may be unnecessary.In principle, the housing part and / or the locking mechanism can include corresponding magnetic elements.

[0046] A corresponding locking element can have at least one locking section, e.g., dome- or cone-shaped, which, in the closed position of the locking element, seals against contact sections formed on the wall-side edges that define the respective through-openings. Due to the sealing contact of the locking element, i.e., corresponding counter-contact sections formed on the locking element-side locking section, against contact sections formed on the corresponding wall-side edges, the ingress of water and / or other foreign substances into the housing part is prevented. Advantageously, the respective wall-side contact sections can be provided, at least partially, with a sealing element, such as a sealing ring, a sealing lip, etc. Similarly, locking element-side locking sections, i.e.,In particular, corresponding counter-position sections formed on this must be provided, at least section by section, with a sealing element, such as a sealing ring, a sealing lip, etc.

[0047] Exemplary embodiments of the device are described below, which illustrate in more detail how a movement of corresponding locking elements from the open position to the closed position, and vice versa, can be induced. The embodiments described in this context can be combined with one another as desired.

[0048] One embodiment provides that a closing element is designed as a float or comprises at least one float. A float is understood to be a body that floats on a water surface and does not sink. This can be achieved, for example, by a closing element having at least one cavity. The cavity is, for example, filled with air. Alternatively or additionally, a closing element can also be made of a low-density material that floats on a water surface and does not sink due to the density difference. Such a material can be, for example, plastic, in particular foamed plastic. Specifically, this could be foamed thermoplastics, such as foamed polyethylene or foamed polystyrene (Styrofoam).A movement of a closing element designed as or comprising a floating body from the open position to the closed position would be automatically induced by a rise in the water level in a manhole accommodating the device. Conversely, a movement of such a closing element from the closed position to the open position would be induced by a drop in the water level in the manhole accommodating the device.

[0049] Another embodiment provides that the movement of a locking element, if present, from the open position to the closed position is induced by a drive unit that can be coupled to or is coupled to the locking element. Such a drive unit is configured to move a locking element from the open position to the closed position, and / or vice versa. Regarding the design or conception of a drive unit, two fundamentally different, yet combinable, embodiments are conceivable: A first embodiment of a drive unit provides that the drive unit is designed as a motorized drive unit or at least includes one. Thus, at least one motorized drive unit coupled to the locking element can be provided, which is configured to move the locking element from the open position to the closed position, and / or vice versa.The motorized drive unit can be, for example, an electric motor. The coupling between the motorized drive unit and the closing element can be achieved, for example, by suitable traction elements, such as straps or chains. Naturally, the closing element can also be designed as a float in this embodiment, or at least include a float.

[0050] A second embodiment of a drive device provides that the drive device is designed as an (electro)magnetic drive device or at least comprises one such device. Thus, at least one (electro)magnetic drive device, which can be coupled to or is coupled to the locking element, can be provided and is configured to move the locking element from the open position to the closed position, and / or vice versa. In this embodiment as well, the locking element can be designed as a float or comprise at least one float. An (electro)magnetic drive device typically comprises at least one magnetizable and / or magnetic element on the housing part and on the locking element. Therefore, both electromagnetic and permanent magnet elements are suitable. A magnetizable magnetic element can thus be, for example, a...The magnetic element can be an electromagnet that exerts a magnetic attraction when energized, or a permanent magnet that exhibits a static magnetic field. In either case, the magnetic elements on the housing side and the locking element side can interact with each other in such a way that a strong magnetic attraction can be exerted, which allows the locking element to be moved from the closed position to the open position. Various configurations are conceivable in this context: For example, at least one electromagnetic magnetic element can be arranged on the housing side, which can be energized as needed, and which, when energized, interacts with at least one permanent magnetic element on the locking element side in such a way that the locking element can be moved from the open position to the closed position due to magnetic attraction.The magnetic element(s) on the locking body side can be arranged on an exposed surface of the locking body or integrated into the locking body. Naturally, the locking body itself can also be made of a magnetic or magnetizable material, such as ferritic steel, or of plastic filled with magnetic or magnetizable particles. In principle, however, it is also possible to provide at least one electromagnetic magnetic element on the locking body side and at least one permanent magnetic element on the housing side. Likewise, corresponding electromagnetic magnetic elements can be provided on both the housing side and the locking body side.It is also conceivable to provide at least one permanent magnet element on both the housing side and the locking element side, so that when the locking element on the locking element comes sufficiently close to the magnetic element on the housing side, the locking element is moved from the open position to the closed position due to magnetic attraction. Sufficient proximity can be achieved, for example, when a locking element designed as a float, or at least comprising one, is moved from the open position to a position between the open and closed positions, e.g., due to flooding. Of course, in this embodiment, care must be taken to ensure that the magnetic attraction existing between the respective permanent magnet elements is sufficient.The interaction is not so high that the locking element in the open position is moved into the closed position solely due to magnetic attraction.

[0051] With regard to the described embodiments of a motor and / or an electromagnetic drive device, it is conceivable that an associated control unit is provided, via which the operation of the drive device(s) is controlled. The control unit is thus configured to generate control information that governs the operation of the motor and / or electromagnetic drive device(s).

[0052] The control unit can further be configured to generate corresponding control information based on water level information provided by a water level sensor for detecting the water level in the manhole housing the device, and describing the water level in the manhole housing the device. Thus, the operation of the motor and / or electromagnetic drive unit can be controlled based on the water level in the manhole housing the device, as detected by a corresponding water level sensor and represented in corresponding water level information.The control unit can take into account certain critical water levels, at which point water ingress into the housing part is possible in principle, so that the control unit provides appropriate control information to the motor and / or electromagnetic drive unit in a timely manner to prevent water ingress into the housing part or the area of ​​the housing part in which baits are arranged.

[0053] The water level sensor can form part of the device. However, this is not mandatory; the control unit can also be configured to communicate with at least one external water level sensor, i.e., one located spatially separate from the device. This could be, in particular, a water level sensor located downstream of the device in the manhole, so that an impending high water level can be detected in time. Naturally, the device and / or the control unit have suitable transmitting and / or receiving equipment for this purpose, enabling data and information exchange with a water level sensor, especially via radio technology such as Bluetooth, WLAN, etc.

[0054] The device may further include a closing position detection device for detecting the closed position of a locking element. The closing position detection device, typically arranged in the housing, is configured to generate at least one acoustic and / or visual closing position indicator upon detecting the closed position of the locking element and to output this information via at least one output means. In this way, it is possible to detect when the closed position has been reached and to indicate this simply via acoustic and / or visual signals, which can be useful in the case of service or repair work. Service or repair personnel can thus be notified that a high water level has been reached or is rising in the channel, causing the locking element to move or be moved into the closed position. The closing position detection device therefore includes suitable sensors for detecting the closed position of the locking element.The sensor technology can be optical, for example, via the implementation of light barriers.

[0055] It was mentioned that a bait can be arranged or is arranged on a bait holding device for holding the bait. In this case, it may be advantageous for the device to include a bite detection device for detecting a bait bite. The bite detection device, typically located in the housing, is designed to generate at least one acoustic and / or visual bite signal upon detection of a baited bait or a bait bite, and to output it via at least one output device. In this way, it is possible to detect a bait bite by a pest and to indicate it easily via acoustic and / or visual signals, which in turn can be advantageous in the case of service or repair work. The service or repair personnel can thus be shown that a bait bite has occurred and can therefore check whether a new bait needs to be placed in the housing.The bite detection device therefore includes suitable sensors for detecting a bait bite. These sensors can, for example, detect the weight of the bait attached to a bait holder, with bite-induced weight changes, typically weight reductions, indicating a bite. Similarly, the sensors can detect bite-induced forces acting on the bait and / or the bait holder, typically tensile forces, which also indicate a bite.

[0056] Depending on the bite information, e.g., based on the weight of the bait, the bite detection device can generate different acoustic and / or visual signals. The weight of a new, unbitten bait can be indicated, for example, by green visual signals and / or by continuously emitted visual signals. The weight of a partially bitten bait can be indicated, for example, by yellow visual signals and / or by a first flashing frequency. If the bait is completely consumed, this can be indicated, for example, by red visual signals and / or by a second flashing frequency that is higher than the first. An optical output device can be, for example, a light-emitting diode (LED), particularly a multi-colored one, or a screen, or at least include one or more such devices.

[0057] The same applies, of course, to the output of acoustic signals, whereby the frequency and / or rhythm of a tone or sequence of tones can be varied depending on the bite information, e.g., based on the detection of the bait's weight. The same applies, naturally, if the bite detection device infers a bite not from weight but from other measured variables. An acoustic output device can, for example, be designed as a loudspeaker or at least include one.

[0058] A corresponding output device can be arranged on or in the housing part, either on an exposed outer surface of the housing part or within a receiving space defined by the housing part. In particular, for optical output devices, if they are arranged within the housing part, i.e., within the receiving space defined by the housing part, the housing part should be at least partially transparent to allow the optical signals to be seen from outside the housing part.

[0059] A corresponding dispensing device can also be integrated into an external mobile device. If a dispensing device is integrated into an external mobile device, the locking position detection device and / or the bite detection device can be configured to communicate with the external mobile device and transmit the locking position information and / or the bite information to the external mobile device for output at the dispensing device located there. Service or operating personnel can thus be informed about the locking position of the locking mechanism and / or a bait bite without having to enter the sewer system. The described communication is primarily radio-based, i.e., implemented via Bluetooth, WLAN, etc., which is why the locking position detection device and / or the bite detection device include corresponding radio-based transmitting devices. An external mobile device could be, for example, a smartphone or tablet.This concerns a mobile phone, smartphone, tablet, notebook, etc.

[0060] In view of the large number of electrical and / or electronic functional components that may be arranged in the housing part, i.e., in particular, corresponding control or detection devices, it may be advantageous for at least one receiving chamber, as already mentioned above, to be formed or arranged in the receiving space defined by the housing part. This receiving chamber allows for the arrangement of electrical and / or electronic functional components of the device, particularly control and detection devices. Such a receiving chamber provides protection for these functional components against external influences, i.e., in particular, climatic and mechanical influences. The receiving chamber can be integral to the housing part or designed as a separate component that is inserted separately into the receiving space within the housing part.The recording chamber can be closed or sealed via a cover element, which can also be a cover element on part of the housing, so that access to the recording chamber can be created by removing the cover element.

[0061] A corresponding receiving chamber can have a receiving chamber base body, in particular cylindrical or cylindrical in shape, which limits a receiving chamber volume for receiving electrical and / or electronic functional components of the device and which projects at least partially into the receiving space on the housing side.

[0062] A corresponding receiving chamber can be conveniently detachably attached to or secured to the housing part. The receiving chamber can thus be arranged on or in the housing part and removed from it. Naturally, the receiving chamber base only projects into the receiving space on the housing part when the receiving chamber is attached to the housing part. The detachable attachment of the receiving chamber to the housing part can be achieved, or can be achieved, by, in particular, a positive-locking interaction of at least one mounting section on the housing part with at least one mounting section on the receiving chamber base. The receiving chamber and the housing part are therefore each equipped with at least one mounting section, the interaction of which allows for a stable or captive, yet (without damage or destruction) detachable attachment of the receiving chamber to the housing part.A positive-locking interaction of respective fastening sections is understood to mean, in particular, an interlocking or overlapping of corresponding fastening sections, at least in sections.

[0063] The receiving chamber can be rotatably mounted on the housing part between a fixed position and a released position. In the fixed position, the at least one mounting section on the housing part and the at least one mounting section on the base of the receiving chamber interact, in particular in a form-fitting manner, so that the receiving chamber is detachably attached to the housing part. In the released position, the at least one mounting section on the housing part and the at least one mounting section on the base of the receiving chamber do not interact, so that the receiving chamber can be detached from the housing part. The mounting of the receiving chamber to the housing part can therefore be established and released by rotating the receiving chamber about an axis of rotation, which typically coincides with the central axis of the receiving chamber, relative to the housing part.The receiving chamber can therefore be moved from the fixed position to the released position, and vice versa, by rotary movements relative to the housing part.

[0064] A corresponding mounting section on the housing part side can, for example, be designed as an annular disc element or annular segment disc element projecting radially from a cylindrical section of the housing part, with at least one shoulder-like mounting projection projecting axially from it. The mounting section, or at least one, on the receiving chamber base body side can be designed as an annular disc element or annular segment disc element projecting radially from a cylindrical extension of the receiving chamber base body, with an axially projecting shoulder-like mounting projection corresponding to, i.e., in particular, oppositely designed or aligned with, the mounting projection formed on the mounting section on the housing part side.

[0065] To achieve the corresponding rotational movements of the receiving chamber, the receiving chamber advantageously has at least one tool engagement area in the region of an upper exposed cover section for the positive engagement of a tool. This tool allows rotational movements to be transmitted to the receiving chamber in order to move the receiving chamber from the fixed position to the unfixed position, and vice versa. Due to the arrangement or design of at least one such tool engagement area in the region of an upper exposed cover section of the receiving chamber, the tool engagement area is always accessible (from above). The geometric shape of the tool engagement area is such that a tool, e.g., a T-shaped tool, can engage it positively, allowing rotational movements to be transmitted to the receiving chamber.

[0066] The tool attack area is easily accessible, especially from above, even when the device is properly inserted into a manhole.

[0067] By appropriately designing and dimensioning a suitable tool, it is not absolutely necessary for a user to descend into the manhole to move the receiving chamber from the fixed position to the released position, or vice versa, by rotating it. The receiving chamber can therefore be detached from the housing part from outside the manhole and, if necessary, removed from the manhole. This can be practical, for example, for inspection purposes, such as checking whether a fish has taken the bait, thus significantly simplifying and speeding up inspections.

[0068] In particular, if a bait is held in place by a bait holding device arranged or designed on the receiving chamber, the receiving chamber together with the bait holding device and the bait held therein can be removed from the sewer shaft without entering the sewer shaft, any bait bite can be detected, the bait can be exchanged or replaced if necessary, and the receiving chamber together with the bait holding device and the bait held therein can be reinserted into the sewer shaft.

[0069] It follows from the preceding paragraph that a suitable bait holding device is expedient, but not necessarily, arranged or formed on the receiving chamber. The bait holding device is, in particular, arranged or formed on a section of the receiving chamber that projects into the receiving area on the housing side.

[0070] At least one monitoring device, particularly an optical one, can be arranged or configured on a corresponding recording chamber for monitoring at least a portion of the recording space bounded by the housing part. The monitoring device is generally arranged or configured on or in the recording chamber such that the most extensive possible monitoring of the recording space bounded by the housing part can be achieved. The monitoring device typically comprises suitable sensors, particularly optical ones, for monitoring at least a portion of the recording space bounded by the housing part. The monitoring device can be configured as an infrared sensor or camera, or at least include an infrared sensor or camera. Of course, the monitoring device can also be configured differently in principle. For example, it would be conceivable...the implementation of a surveillance device in the form of a video camera or the like.

[0071] Regardless of the specific design of the monitoring device, it is therefore possible to record and analyze all processes within the recording space, or a portion thereof, defined by the housing. In particular, pest-related processes can be recorded, analyzed, and assessed quantitatively and / or qualitatively. Processes of particular interest that can be monitored quantitatively and / or qualitatively include, for example, pests entering and exiting the recording space, and the behavior—especially their biting and / or movement—of pests that have entered the recording space. Generally, the frequency of use of the recording space per unit of time can be recorded, analyzed, and assessed quantitatively and / or qualitatively. Since the monitoring information recorded by the device...Since data can be transmitted via a suitable communication link, particularly wireless, to a user-side, especially mobile, external device, a corresponding monitoring system allows for the monitoring of all processes within the recording area defined by the housing, without requiring entry into the manhole or sewer system. Communication is primarily wireless, i.e., via Bluetooth, WLAN, etc., which is why the monitoring system includes a corresponding wireless transmitter. An external device, particularly a mobile one, could be, for example, a mobile phone, smartphone, tablet, notebook, etc.

[0072] A suitable monitoring device can be supplied with electrical energy via an electrical energy storage device, particularly a rechargeable one, arranged or integrated within the recording chamber. For example, an electrochemical or galvanic energy storage device in the form of a battery, especially a rechargeable one, is suitable. An inductive energy storage device, i.e., one rechargeable by electromagnetic induction, is also conceivable. In principle, the electrical power supply of such a monitoring device can also be implemented via a wired connection to a power grid.

[0073] The same applies, incidentally, to the electrical power supply of other electrical and / or electronic functional components of the device arranged or formed in the receiving chamber.

[0074] According to the invention, the device comprises at least one splash guard element to protect against the ingress of water into the receiving space on the housing part in the event of a sudden or sudden rise in the water level in the channel shaft in which the housing part is inserted or is inserted.

[0075] The splash guard element is typically positioned or designed below a bottom wall or a "lowest" bait platform, if present. The splash guard element can be located at least partially inside or outside the housing section.

[0076] A corresponding surge protection element typically has a base body that defines at least one surge absorption volume for accommodating a specific quantity of water flowing in the or a manhole. The base body of the surge protection element can, for example, be cylindrical. Polygonal, and especially rectangular, base shapes are also conceivable. A closing element, if present, can be movably mounted, at least partially, within the base body of the surge protection element, such that it moves from the open position to the closed position when the water level in the surge absorption volume rises as water enters it.In the closed position, the locking element typically rests with a corresponding, in particular domed or conical, closing section, sealing against contact sections formed at the edges that define a through-opening. While a locking element is expediently, it is not necessarily a floating element, considering the above explanations in conjunction with corresponding drive devices that can be coupled to or are coupled to a locking element.

[0077] The base of the surge protection element can include a base surface with at least one surge water inlet opening on the side facing away from a bottom wall of the housing section, i.e., possibly a bailing platform. If present, a closing element can be positioned at least partially within the surge water inlet opening in the open position. As the water level in the manhole rises, the closing element, which is particularly well-designed as a float, lifts away from the surge water inlet opening, allowing water to enter the surge water collection volume until the closing element is eventually moved from the open position to the closed position by the rising water level in the surge water collection volume, as described. Of course, it is also conceivable that the base of the surge protection element is completely open on the side facing away from a bottom wall of the housing section.In this case, a locking element can be held in place by a suitable bracket.

[0078] The base body of the splash guard element can have a number of feet, e.g., rib-like, which serve to support the base body, and optionally also the housing part arranged on it, along with the functional components of the device arranged or attached therein.

[0079] As a general rule, the housing component can be provided with stiffening structures to increase its mechanical stability. These stiffening structures can be designed, for example, as rings or ribs. Such stiffening structures can be separate components that are attached to or connected with the housing component, or they can be integrally formed with the housing component.

[0080] To facilitate pests' access to the housing component via a locking mechanism, the locking mechanism can be provided, at least in sections, with a surface structure, coating, or covering that offers pests a grip and / or adhesion. Such a surface structure, coating, or covering inhibits or prevents pests from slipping off the locking mechanism, thus acting as an "entry aid" and facilitating access to the housing component. Conversely, such a surface structure, coating, or covering also acts as an "egress aid" for pests, thus facilitating their exit from the housing component.

[0081] A suitable, typically three-dimensional, surface texture that provides a grip and / or adhesion for pests can be formed, for example, by ridges, ribs, and / or beads on the surface of the locking mechanism. A surface texture can also consist of a stepped or terraced structure on a section of the locking mechanism's surface. A certain degree of surface roughening can also serve as a surface texture. A suitable surface coating can be formed, for example, by a rubber-like coating on the locking mechanism. In general, any coating that improves the adhesion of pests to a locking mechanism, e.g., based on natural or synthetic rubbers, silicones, etc., can be applied to at least sections of the locking mechanism's surface.A suitable surface covering can be formed, for example, by a rubber-like surface covering attached at least partially to the surface of a locking element. This surface covering must be attached to the locking element in a suitable manner, for which all form-fitting, force-fitting, and / or material-fitting methods are suitable; clipping, gluing, screwing, embossing, etc., are mentioned only as examples. In the exemplary case of a dome-shaped or spherical segment-shaped locking element, a corresponding surface structuring and / or surface coating and / or surface covering can be arranged or formed at least partially on a disc-shaped section of the spherical segment-shaped locking element.

[0082] In particular, to implement a mounting of a locking element that is movable relative to a bait platform having at least one through-opening, it is conceivable that the locking element is mounted movably relative to the bait platform by means of at least one clamp- or clip-like retaining element that is movably, in particular pivotably, mounted on or in the housing part, in particular on the bait platform. A corresponding retaining element, which can also be described as a retaining clamp or retaining clip, is typically attached on one side, in particular at one end, to the housing part or the bait platform and on the other side, in particular at the other end, to the locking element. The connection of the locking element to the retaining element, the connection of the retaining element to the housing part or the bait platform, and the geometric dimensions, i.e.,In particular, the shape of the retaining element defines a specific path of movement that the locking element follows when moving from the open position to the closed position, and vice versa.

[0083] The clamp- or clip-like retaining element can comprise at least two retaining element sections running parallel or at an angle to each other, wherein at least one retaining element section engages through a through-opening bounded on the bait platform side, at least in the open position of the closing element. Corresponding retaining element sections, and thus the entire retaining element, can, for example, be bent in an L-shape, i.e., have a (essentially) L-shaped geometric form.

[0084] Another possible implementation of a movable mounting of a locking element relative to at least one through-opening can be achieved by means of a flap device. Such a flap device can comprise at least one flap element that is movable, in particular pivotable, relative to a through-opening. In an open position, this flap element is moved away from the at least one through-opening such that the at least one through-opening is uncovered. In a closed position, it is moved towards or over the at least one through-opening such that the at least one through-opening is closed. The locking element can be an integral part of the flap device in the form of a corresponding flap element. Alternatively, it is also possible to attach a separate locking element to a corresponding flap element.Of course, in this embodiment too, a closing element can be designed as a float or at least include a float.

[0085] A corresponding flap device can also comprise several flap elements which, in a respective open position, are moved away from the at least one passage opening in such a way that the at least one passage opening is released, and in a respective closed position, are moved towards or over the at least one passage opening in such a way that the at least one passage opening is closed by the flap elements together.

[0086] To ensure a stable and secure installation of the housing component within the manhole, the housing component may include a fastening device by which it can be attached, in particular (without damage or destruction), to a wall of the manhole or to access equipment on the manhole side, such as ladders. Such a fastening device may, for example, comprise hook- or profile-like fasteners to anchor the housing component, and thus the entire device, to a wall of the manhole or to corresponding access equipment.

[0087] A particularly advantageous embodiment of a fastening device, by means of which the housing part can be attached to the wall of a sewer, in particular a manhole, can comprise at least one first fastening element, in particular annular, which encompasses the outer circumference of the housing part, and at least one second fastening element for attaching the first fastening element to the wall of a sewer. A corresponding fastening device thus enables a stable attachment of the housing part to the wall of a sewer or manhole, particularly with regard to forces acting on the housing part caused by flooding or surge water. The attachment of the second fastening element to the wall of a sewer or manhole...The fastening of a manhole can, for example, be achieved via fastening bolts or screws extending from or through horizontal or vertical bores, possibly threaded, originating from the second fastening element or from the second fastening element, which can be anchored stably in the wall of a sewer or manhole, e.g. by masonry or screws.

[0088] All components of the fastening device are suitably made of, or comprise, one or more mechanically stable and corrosion-resistant materials, e.g., stainless steels, or material structures. As will be shown below, a suitable fastening device can also provide buoyancy protection for the housing component.

[0089] Generally speaking, the fastening device can be designed as a single piece or in multiple parts. The first and second, i.e., generally at least one further fastening element, can therefore be formed as a single piece or as multiple pieces and attached to each other accordingly. For fastening the respective fastening elements to one another, all (non-destructive) detachable or non-detachable forms of attachment, whether form-fitting, force-fit, or material-fit, are fundamentally suitable.

[0090] To achieve buoyancy protection, the second fastening element can include at least one fastening element section that overlaps the housing part on its upper side, at least partially, thus forming a buoyancy barrier. The housing part is therefore protected against buoyancy forces caused by floodwater or surge water and is securely fastened to or within the sewer system, particularly in its vertical position. In other words, the fastening element section overlapping the housing part on its upper side can absorb buoyancy forces caused by floodwater or surge water.

[0091] Naturally, it is possible to provide several corresponding fastening element sections. For example, at least two fastening element sections, preferably angled or V-shaped, can be present. A fastening element section can, in principle, have any geometric shape. Leg-like or strut-like fastening element sections are mentioned only as examples.

[0092] Corresponding fastening element sections can be attached, detachable, or secured to the exposed upper surface of the housing part, particularly in a form-fit manner (without damage or destruction). The fastening is thus achieved primarily through a positive fit, i.e., via the positive-locking interaction of positive-locking elements on the fastening element sections with corresponding positive-locking elements on the housing part. Positive-locking elements formed on the respective fastening element sections can, for example, be designed as recesses or openings, while positive-locking elements formed on the housing part can, for example, be designed as projections, particularly vertical ones, which, in the attached state, engage in or through corresponding recesses or openings. Naturally, a mixed or reversed configuration of corresponding recesses or openings and projections is possible.

[0093] A corresponding fastening element section can be attached as a separate component to a profile-like base body of the second fastening element in a form-fit, force-fit, and / or material-fit manner (without damage or destruction), either detachably or permanently. Clamping, screw, or welding fastenings are mentioned here only as examples. It is also conceivable that the fastening element section, or at least one corresponding section, is formed integrally with the profile-like base body of the second fastening element.

[0094] A corresponding fastening element section can be designed, at least partially, with at least one stiffening structure, particularly one that reduces its cross-section, to increase the mechanical stability of the fastening element section. In this way, the material thickness and thus the weight of the fastening device can be reduced without compromising its mechanical properties or stability. Such stiffening structures can be formed, for example, by ribs, beads, etc.

[0095] As an alternative to fastening the housing part using a fastening device, it is conceivable to clamp and secure the housing part against the walls of a sewer or manhole using a clamping device. The clamping device can comprise several clamping elements, typically arranged at equidistant intervals and projecting radially from the housing part, which clamp it against the corresponding walls.

[0096] As an alternative to fastening the housing part by means of a fastening device, it is conceivable to provide at least one guide device for guiding the housing part inserted into a duct shaft, in particular linearly, along or relative to a wall of the duct shaft. Here, the housing part is not fixedly attached to a wall of the duct shaft, but is guided, in particular linearly, along or relative to a wall of the duct shaft by means of a corresponding guide device. With such a guide device, it is therefore possible for the housing part inserted into a duct shaft, together with components of the device arranged therein and / or within it, to move within the duct shaft, in particular linearly. Movements of the housing part typically occur along a vertically extending, in particular linear, axis of movement, i.e.,along a symmetry or central axis of the channel shaft. The housing part is guided by the guide device and is secured against tilting in the channel shaft; the guide device thus prevents the housing part from tilting in the channel shaft.

[0097] The following section describes various exemplary embodiments of corresponding guide devices, which differ particularly in the functional and structural design of the respective guide elements belonging to each guide device: A corresponding guide device can, for example, comprise at least one, typically several, wheel- or roller-like guide element(s) over which the housing part can be moved or guided along the wall of the duct shaft in a rolling manner. Corresponding wheel- or roller-like guide elements can bear directly against the wall of the duct shaft, so that no special provisions are necessary on the (duct shaft) wall side to implement the movable guidance of the housing part. In the case of several wheel- or roller-like guide elements, these are typically arranged or formed at equidistant intervals on or around the housing part.Suitable wheel- or roller-like guide elements can be, for example, wheels or rollers. Generally, any guide element that allows rolling along the wall of a manhole is suitable.

[0098] Corresponding wheel- or roller-like guide elements can be mounted on a holding device arranged or formed on the housing part. The wheel- or roller-like guide elements can be clamped or braced against the wall of the manhole via the holding device, in particular by applying clamping force. Such a mounting and clamping enables secure vertical positioning of the housing part in a manhole. The clamping force is typically selected to prevent uncontrolled lowering of the housing part, while still allowing vertical movement of the housing part, particularly towards a manhole cover or an upper manhole opening. Movement of the housing part towards a manhole cover or an upper manhole opening can be caused, in particular, by buoyancy forces, e.g., those resulting from surge water.

[0099] A suitable holding device can comprise at least one retaining arm that is hinged or pivotable on the housing part, i.e., arranged or formed in this way, and which can be hinged or pivoted against the wall of a manhole. The retaining arm can be coupled to at least one clamping element, in particular a spring element, e.g., in the form of a compression spring, via which clamping element a clamping force, in particular spring force, can be exerted on the retaining arm, clamping the guide element against the wall of the manhole. Such clamping elements are typically arranged or formed between the housing part and a retaining arm. Using a holding device designed in this way, the housing part can be inserted into a multitude of manholes with different diameters and clamped (at an angle) against the manhole walls.

[0100] Alternatively or additionally, a suitable holding device can comprise at least one extendable holding arm, particularly telescopic, which can be extended radially (with respect to the symmetry or central axis of the housing part or the respective channel shaft) against a wall of a channel shaft. The holding arm can be coupled to at least one clamping element, particularly a spring element, e.g., in the form of a compression spring, via which clamping element a clamping force, in particular spring force, can be exerted on the holding arm, clamping the guide element against the wall of the channel shaft. Using a holding device designed in this way, the housing part can also be inserted into a multitude of channel shafts with different diameters and clamped (radially) against the channel shaft walls.

[0101] A corresponding guide device can also comprise at least one linear guide element on the housing part side, in particular a gear- or rack-like element, and at least one corresponding or cooperating linear guide element on the (channel shaft) wall side, in particular a gear- or rack-like element, by means of which the housing part can be guided or moved linearly along the wall of the channel shaft. In this case, the guide device therefore also includes wall-side guide elements in the form of corresponding linear guide elements, in particular gear- or rack-like elements. Corresponding housing part-side and wall-side linear guide elements are typically in mechanical engagement or a mechanical operative connection, i.e., they interact to form a corresponding linear guide.In addition to gear- or rack-like linear guide elements, any linear guide elements that enable a corresponding linear guidance of a housing part relative to a channel shaft wall are suitable, both on the housing part side and on the wall side.

[0102] A corresponding guide device can comprise at least one drive device, in particular a motor, which can be coupled to or is coupled to at least one guide element and is configured to transmit a drive force to the at least one guide element, causing it to move in a unidirectional or bidirectional direction. A corresponding drive device can be arranged on or in the housing part. Alternatively or additionally, a corresponding drive device can also be arranged on or in a corresponding guide element, e.g., integrated into a wheel- or roller-like guide element or a gear. A corresponding drive device can, for example, be an electric motor. The electric motor can be powered analogously to the power supply of other electrical or electronic components of the device.

[0103] A corresponding guide device can also comprise at least one profile- or rod-like guide element that can be attached or is attached in a manhole and is arranged on or penetrates the housing part, particularly axially. The housing part is also guided so as to be movable relative to the profile- or rod-like guide element, particularly linearly. This typically also includes attaching the housing part to the profile- or rod-like guide element, which in turn is attached to the manhole side, i.e., embedded in masonry or screwed in place. The profile- or rod-like guide element does not necessarily have to be in direct contact with a manhole wall, but can be arranged or formed, e.g., centrally, within the manhole. A profile- or rod-like guide element that typically penetrates a housing part axially prevents the function of the device described above.especially movements of a corresponding locking element, not.

[0104] To facilitate or support movement of the housing component within a sewer shaft, at least one float can be attached to or incorporated into the housing component. The positioning of such floats is typically above a closing element, if present, so that rising water in the sewer shaft only reaches a housing-side float when the closing element is already in the closed position. Here, a float is understood to be a body that floats on the water's surface and does not sink. It is possible to attach separate floats to the housing component or to design the housing component with integrated floats. This can be achieved, for example, by a housing component wall that defines or contains at least one cavity. This cavity is, for instance, filled with air.Alternatively or additionally, a housing section can also be made of a low-density material, which, due to the density difference, floats on a water surface and does not sink. Such a material could be, for example, plastic, especially foamed plastic. Specifically, this could also be, for example, foamed thermoplastics such as foamed polyethylene or foamed polystyrene (Styrofoam). An upward movement of the housing section would be induced by a rise in the water level in the channel shaft housing the device. Conversely, a downward movement of the housing section would be induced by a drop in the water level in the channel shaft housing the device. Naturally, such movements of the housing section can be (co-)controlled by appropriate drive mechanisms if these are present.

[0105] In this context, the possibility of suspending the housing part within the duct shaft, i.e., from a wall of the duct shaft, for example in the manner of a pendant lamp, is also conceivable. In this case, a suitable suspension device must be provided, by which the housing part can be suspended from a wall of the duct shaft, particularly one that is horizontally oriented or running.

[0106] In all described embodiments, the housing part is typically made of a corrosion-resistant material, such as a stainless metal, i.e., aluminum or steel (sheet), and / or plastic. Different sections of the housing part can be made of different materials. In particular, for the plastic housing part or a housing section, a transparent plastic material can be used to allow a view into the housing part, for example, to check for a fish biting.

[0107] The invention further relates to a manhole, generally a manhole-like structure or a manhole-like section of a structure, comprising at least one device as described. Such a manhole may, in particular, be a sewer manhole or a cable duct manhole. All descriptions relating to the device apply analogously to the manhole.

[0108] Further advantages, features, and details of the invention will become apparent from the exemplary embodiment described below and from the drawings. The drawings show: Figs. 1-8 each show a schematic representation of a device for holding bait according to a further embodiment of the invention; Figs. 9-12 each show a schematic representation of a device for holding bait according to a further embodiment of the invention; Figs. 13-17 each show a schematic representation of a device for holding bait according to a further embodiment of the invention; Figs. 18-21 each show a schematic representation of a device for holding bait according to a further embodiment of the invention; Figs. 22-34 each show a schematic representation of a device for holding bait according to a further embodiment of the invention; and Figs. 35-37 each show a schematic representation of a device for holding bait according to a further embodiment of the invention.

[0109] Fig. 1 Figure 1 shows a schematic representation of a device 1 for holding a bait 2 for animals, i.e., in particular pests, according to an embodiment of the invention. The bait 2 contains substances, i.e., in particular poisons and active ingredients, that cause the death of animals and / or prevent the reproduction of animals, and / or attractants that attract corresponding pests.

[0110] The term "animal" refers to animals that reside, at least temporarily, in water-bearing installations, i.e., in a sewer or manhole. This includes, in particular, pests such as rodents (e.g., mice, rats, etc.), and / or insects (e.g., beetles, cockroaches, etc.), and / or small mammals (e.g., bears, raccoons). The term "pest" will be used in the following text without restriction.

[0111] The device 1 comprises a housing part 3. The housing part 3 is inserted into a sewer 4, i.e., a wastewater sewer or sewer shaft. The housing part 3 is fastened via a [missing information] in the Fig. 1 - 12 A fastening device 35, not shown in detail, is attached to the housing part 3, in particular detachably, to a wall of the channel 4. The fastening device 35 can comprise hook- or profile-shaped fastening elements, so that the housing part 3 can be fastened in the wall of the channel 4 or to corresponding channel-side climbing devices (not shown), such as climbing irons.

[0112] The housing part 3 is designed as a hollow cylindrical body, i.e., the housing part 3 is bounded by housing partial walls 3a - d a (substantially) cylindrical receiving space 5. Housing partial walls 3a, 3b each form a side wall of the housing part 3, housing partial wall 3c forms a top wall of the housing part 3, and housing partial wall 3d forms a bottom wall of the housing part 3.

[0113] Each of the housing wall sections 3a and 3b has a through-opening 9. Pests can reach a bait 2 located in the receiving chamber 5 through these through-openings 9. These through-openings 9 thus provide access for pests into the receiving chamber 5. Naturally, pests can also exit the receiving chamber 5 through these through-openings 9. Therefore, these through-openings 9 also provide an exit for pests from the receiving chamber 5.

[0114] The passage openings 9 may be evenly or unevenly distributed with respect to the given geometric and structural design of the housing part 3, i.e., circumferentially and / or vertically. The passage openings 9 do not necessarily have to be identical with respect to their geometric and structural design, i.e., their dimensions or shape. Therefore, pest-specific passage openings 9, i.e., specific passage openings 9 for specific pests, may be provided. Passage openings 9 may, of course, also comprise several interconnected passage opening sections with different geometric and structural designs, which may be specifically designed for particular pests.

[0115] The passage openings 9 can each be closed by means of an associated locking element 15. The locking elements 15 are movably mounted directly on the housing part 3 relative to it. The direct mounting of the locking elements 15 on the housing part 3 implies a captive arrangement or connection of the locking elements 15 to the housing part 3. The movable mounting of the locking elements 15 means that the locking elements 15 can pivot about a pivot point 111 on the housing part. The locking elements 15 can each be moved into an open position in which the respective wall-bound passage openings 9 are released. In the open position, the locking elements 15 are moved away from the passage openings 9 in such a way that the passage openings 9 are released, allowing pests to pass through the passage openings 9 to enter or exit the housing part 3. As described in Fig. 1 As shown in dashed lines, the locking elements 15 can be moved into a closed position in which the wall-bounded passage openings 9 are not released, i.e., closed. In the closed position, the locking elements 15 are moved against the respective passage openings 9 in such a way that the passage openings 9 are not released, so that pests cannot pass through the passage openings 9 to enter or exit the housing part 3. In the closed position, the locking elements 15 hermetically seal the passage openings 9.

[0116] In the closed position of the locking elements 15, the receiving chamber 5 is hermetically sealed off from the surroundings of the housing part 3, thus preventing water from entering the receiving chamber 5, for example, due to flooding or surges. This prevents contamination of the water with substances contained in the baits 2 arranged in the housing part 3, i.e., poisons, attractants, or active ingredients. The movement of the locking elements 15 from the closed position to the open position can be induced in various ways. This will be discussed later, particularly in connection with the description of the exemplary embodiments according to the Fig. 9 - 12 , discussed in more detail.

[0117] The in Fig. 2 The illustrated embodiment shows, in comparison to the one in Fig. 1 In the illustrated embodiment, a splash guard element 109 protects against the ingress of water into the receiving space 5, which is bounded by the housing part, due to splashing or spraying. The splash guard element 109 is roof-shaped and partially surrounds the through-openings 9. The splash guard element 109 is arranged as a separate component on the housing part 3. However, the splash guard element 109 could also be formed integrally with the housing part 3.

[0118] The in Fig. 3 The illustrated embodiment shows, in comparison to the ones in the Fig. 1 , 2In the illustrated embodiments, a further through-opening 9 is provided in the housing partial wall 3d, which forms a bottom wall of the housing part 3. The housing partial wall 3d can also be referred to or considered as a bait platform 8. The through-opening 9, which is bounded on the bait platform side, can be closed by means of a closing element 15 in an analogous manner to the other through-openings 9.

[0119] The in Fig. 4 The illustrated embodiment shows, in comparison to the ones in the Fig. 1 - 3 In the illustrated embodiments, a further through-opening 9 is provided in the housing part wall 3c, which forms a ceiling wall of the housing part 3. The through-opening 9 on the ceiling wall side can be closed by means of a closing element 15 in the same manner as the other through-openings 9. The closing element 15 associated with the through-opening 9 on the bait platform side and the closing element 15 associated with the through-opening 9 on the ceiling wall side are visibly connected to each other via a coupling element 110 in the form of a coupling rod. As indicated by the double arrow, the movement coupling of the closing elements 15 is such that the closing elements 15 can be moved together into or towards a respective closed and / or open position.It is evident that the closing element 15 assigned to the ceiling wall-side passage opening 9 is not pivotable, unlike the closing element 15 assigned to the bait platform-side passage opening, but is mounted in a linearly guided, slidable manner.

[0120] The in Fig. 5 The illustrated embodiment differs from the ones shown in the Fig. 1 - 4 The illustrated embodiments do not show a pivotally mounted locking element 15, but rather a locking element 15 that is slidably mounted relative to the housing part 3. The locking element 15 can also be moved into an open position in which the respective wall-bounded passage openings 9 are released. In the open position, the locking element 15 with corresponding locking element sections 15a is moved away from the passage openings 9 such that the passage openings 9 are released, allowing pests to pass through the passage openings 9 to enter or exit the housing part 3. In the embodiment shown Fig. 5 In the closed position shown, the locking element 15 with corresponding locking element sections 15a is moved over the passage openings 9 in such a way that the passage openings 9, which are limited on the wall side, are not released, i.e., closed, so that pests cannot pass through the passage openings 9 to enter or exit the housing part 3. In the Fig. 5 In the illustrated embodiment, several through-openings 9 can be closed via a common closing element 15.

[0121] The free ends of the locking element sections 15a are provided with stops 113, which, in the closed position, abut against stops 112 on the housing side. The stops 113 on the locking element section and / or the stops 112 on the housing side may be provided with sealing elements. The locking element sections 15a hermetically seal the through-openings 9.

[0122] In comparison, this shows Fig. 6 An embodiment in which corresponding through-openings 9 can each be closed by means of their own locking element 15. The locking elements 15 are therefore fundamentally independent of one another. The number of locking elements 15 typically corresponds (at least) to the number of through-openings 9.

[0123] The in Fig. 7 The illustrated embodiment shows a variant of a mounting for corresponding locking elements 15 that are displaceable relative to the housing part 3. The locking elements 15 are captive and thus indirectly mounted on guide sections 114 formed on the housing part 3. In this embodiment, the guide sections 114 are ramp-shaped. The locking elements 15 are movably mounted along the guide sections 114 relative to the housing part 3.

[0124] The locking elements 15 can be moved into an open position in which the respective wall-side bounded passage openings 9 are released. In the open position, the locking elements 15 with corresponding locking element sections 15a are moved away from the passage openings 9 such that the passage openings 9 are released, allowing pests to pass through the passage openings 9 to enter or exit the housing part 3. Fig. 7 In the closed position shown by the dashed line, the locking elements 15 with corresponding locking element sections 15a are moved over the passage openings 9 in such a way that the passage openings 9, which are limited on the wall side, are not released, i.e. closed, so that pests cannot pass through the passage openings 9 to enter or exit the housing part 3.

[0125] The in Fig. 8 The illustrated embodiment shows a variant in which, in addition to through-openings 9 on the housing part wall, through-openings 9 are also formed in a wall – here, for example, a wall forming a bottom wall – of a connecting component that can be connected to or is connected to the housing part 3. The connecting component is a receiving chamber 31 that can be connected to or is connected to the housing part 3, in which (in more detail below) electrical and / or electronic functional components of the device 1 and a lure 2 are arranged. Based on the Fig. 8 The illustrated embodiment further clarifies that a wall bounding the receiving space 5 is generally a wall defining the outer or inner contour of the receiving space 5. This also includes walls of corresponding connecting components.

[0126] Analogous to those in the Fig. 1 - 8 In the illustrated embodiments, the through-opening 9 on the receiving chamber side can be closed by means of a closing element 15. The closing element 15, which here, for example, is movably mounted on the receiving chamber 31 relative to the housing part 3, is analogous to the one shown in Fig. 3 The closing element 15 shown, which is assigned to the bait platform-side through-opening 9, can be moved into an open position in which the (receiving chamber-side) through-opening 9 is released, and into a closed position in which the (receiving chamber-side) through-opening 9 is not released.

[0127] In connection with the in the Fig. 1 - 8 Finally, it should be noted that in the illustrated embodiments, the closing elements 15 are each floating elements or each includes floating elements. The movement of the closing element 15 from the open position to the closed position takes place in the following ways: Fig. 1 - 8 The illustrated embodiments are caused by a rise in the water level in the canal shaft 4. In the Fig. 8 In the illustrated embodiment, the receiving chamber 4 will typically also fill with water.

[0128] Regarding the embodiments described below, it should be noted that, although through-openings 9 on the housing wall side are not explicitly shown or described there, they are of course also present there.

[0129] In the Fig. 9 In the illustrated embodiment, a cover element 6 is provided in the area of ​​the housing part 3c, which forms a ceiling wall, and thus in the area of ​​an upper end face of the housing part 3. The housing part 3 can therefore be closed at its end face by means of a cover element 6. By removing the cover element 6, access to the receiving chamber 5 can be created. The cover element 6 has a threaded section (not shown), and the housing part 3 has a corresponding threaded section (also not shown), so that the cover element 6 can be screwed to the housing part 3. A sealing element 7 is also arranged between the cover element 6 and the housing part 3, which enables a seal of the housing part 3 in the area of ​​the upper end face.

[0130] A bait platform 8, typically ring-shaped, is formed in the receiving chamber 5. The bait platform 8 delimits a typically circular through-opening 9. The through-opening 9 thus defines an upper region 5a of the receiving chamber 5 located above it and a lower region 5b of the receiving chamber 5 located below it. The bait platform 8 is structurally connected to the housing part 3 via inner walls 11 that are offset radially inwards with respect to the outer wall 10 of the housing part 3.

[0131] The bait 2 is located in the upper area of ​​the receiving chamber 5. A bait holding device 12 is provided for this purpose, with the bait 2 held at its free end. In principle, however, the bait 2, or another bait 2, could also be located directly on the bait platform 9.

[0132] Between the outer wall 10 of the housing part 3 and the radially inwardly offset inner walls 11, housing-side guide sections 13 are formed in the form of elongated guide receptacles. The housing-side guide sections 12 interact with corresponding guide elements 14 in the form of elongated guide webs of a locking element 15. The interaction of the housing-side guide sections 13 with the locking element-side guide elements 14 provides linear guidance and thus a movable mounting of the locking element 15, which enables the locking element 15 to be moved relative to the bait platform 8. The mounting of the locking element 15 includes a captive arrangement or connection of the locking element 15 to the housing part 3.

[0133] The movable mounting of the locking element 15 provides for an open position and a closed position. The locking element 15 is thus movably mounted or guided between an open position and a closed position. The locking element 15 can therefore be moved between an open position and a closed position, and vice versa, relative to the bait platform 9.

[0134] In the Fig. 9 In the open position shown, the closing element 15 is moved away from the bait platform 8 in such a way that the passage opening 9, which is limited on the bait platform side, is opened. Thus, a pest can pass through the passage opening 9 in the open position, for example, to move from the lower area 5b of the receiving chamber 5 to the upper area 5a of the receiving chamber 5, or vice versa. In the Fig. 10 In the closed position shown, the closing element 15 is moved against the bait platform 8 in such a way that the passage opening 9, which is limited on the bait platform side, is closed. Accordingly, a pest cannot pass through the passage opening 8 in the closed position to, for example, move from the lower area 5b of the receiving chamber 5 to the upper area 5a of the receiving chamber 5, or vice versa.

[0135] To reach the bait 2 located in the upper section 5a of the receiving chamber 5, a pest must first enter the housing part 3. For this purpose, passages 21 are formed in the guide elements 14 on the closing body side. The passages 21 allow access to the lower section 5b of the receiving chamber 5. To reach the bait 2, the pest must then pass through the passage opening 9, which is limited on the bait platform side, onto the bait platform 8 and thus into the upper section 5a of the receiving chamber 5. After taking the bait 2, the pest can pass through the passage opening 9 from the upper section 5a of the receiving chamber 5 into the lower section 5b of the receiving chamber 5 and leave the device 1 via corresponding passages 21.

[0136] The closure of the passage opening 9, which is limited on the bait platform side and is achieved in the closed position of the closing element 15, prevents, in particular, the unwanted ingress of water into the upper area 5a of the receiving chamber 5, in which the bait 2 is located, which could occur, for example, during high or high water levels. Therefore, in the closed position of the closing element 15, the risk of contamination of the water in the sewer shaft with the substances contained in the bait 2 is eliminated.

[0137] The closing element 15 evidently has a dome-shaped closing section 16, which, in the closed position, abuts section by section, sealingly, against contact sections 17 formed on the bait platform-side edges that define the bait platform-side bounded passage opening 9. The sealing contact of corresponding counter-contact sections 18 formed on the dome-shaped closing section 16 and on corresponding bait platform-side contact sections 17 prevents water from penetrating into the upper area 5a of the housing-side receiving chamber 5. Sealing elements 19 in the form of sealing lips are also formed on the bait platform-side contact sections 17 for sealing purposes. For the same purpose, sealing elements 20 in the form of sealing rings are also formed on the closing element-side counter-contact sections 18.Further, unspecified sealing elements in the form of sealing lips are also provided in the area of ​​the opening of the housing-side guide section 13 and on lateral areas of the locking body 15.

[0138] The movement of the locking element 15 from the open position to the closed position takes place in the Fig. 9 , 10In the illustrated embodiment, the movement of the closing element 15 is triggered by a rise in the water level in the manhole 4. This is because the closing element 15 is designed as a float. The closing element 15 therefore has, for example, a cavity filled with air (not shown). Alternatively or additionally, the closing element 15 can be made of a low-density plastic material, particularly a foamed one, which floats on the water surface due to the density difference and does not sink. A movement of the closing element 15 from the open position to the closed position is thus automatically induced by a rise in the water level in the manhole. Conversely, a movement of the closing element 15 from the closed position to the open position is induced by a drop in the water level in the manhole.

[0139] The locking element 15 can be mounted in a reversibly or irreversibly movable manner. The described movement of the locking element 15 from the open position to the closed position can therefore be either reversible or irreversible. A reversibly movable mounting of the locking element 15 means that the locking element 15 can move from the open position to the closed position on its own. An irreversibly movable mounting means that the locking element 15 can be held or retained in the closed position, in particular releasably, by a locking element retaining device (not shown), and thus cannot move from the closed position to the open position on its own. A corresponding locking element retaining device typically comprises at least one mechanical and / or magnetic retaining element on the housing side and / or on the locking element side, which is configured to mechanically and / or magnetically retain the locking element 15 in the closed position.The mechanical or magnetic retaining means on the housing side or on the locking element side can thus interact in such a way that the locking element 15 is securely held in the closed position and cannot be easily removed from it.

[0140] Fig. 11 Figure 1 shows a device 1 according to a further embodiment of the invention. In contrast to the one shown in the Fig. 9 , 10In the illustrated embodiment, the device 1 comprises a motorized drive unit 22 in the form of an electric motor coupled to the locking element 15, which is configured to move the locking element 15 from the open position to the closed position, and / or vice versa. A movement of the locking element 15 from the open position to the closed position can thus be selectively induced by a motorized drive unit coupled to the locking element 15. The coupling between the motorized drive unit 22 and the locking element 15 is realized via a traction element 23 in the form of a chain. Naturally, the locking element 15 can also be designed as a floating body in this embodiment.

[0141] The operation of the motor drive unit 22 is controlled by a control unit 24 assigned to it, which is designed to generate control information that controls the operation of the motor drive unit 22.

[0142] The control unit 24 is further configured to generate control information based on water level information provided by a water level sensing device 25 for detecting the water level in the manhole accommodating the device 1, and describing the water level in the manhole. Thus, the operation of the motorized drive unit 22 can be controlled based on the water level in the manhole accommodating the device 1, as detected by a corresponding water level sensing device 25 and represented in corresponding water level information.

[0143] In the Fig. 11 In the illustrated embodiment, the water level sensing device 25 is arranged externally, i.e., spatially separate from the device 1. Accordingly, the control unit 24 is also configured to communicate with the (external) water level sensing device 25, e.g., wirelessly. For this purpose, the control unit 24 includes a suitable receiving device and the water level sensing device 25 a suitable transmitting device. However, the water level sensing device 25, or a corresponding one, can also be integrated into the device 1.

[0144] Fig. 12 Figure 1 shows a device 1 according to a further embodiment of the invention. In contrast to the one in Fig. 11 In the illustrated embodiment, a (electro)magnetic drive unit 32 is provided instead of a motorized drive unit 22. The (electro)magnetic drive unit 32 comprises an electromagnetic magnetic element 33 arranged in the upper region 5a of the receiving space 5 and a permanent magnetic element 34 arranged on the closing element side. When energized, the permanent magnetic element 33 on the housing side exerts such a high magnetic attraction force on the permanent magnetic element 34 on the closing element side that the closing element 15 is moved from the open position to the closed position. The operation of the permanent magnetic element 33, i.e., in particular its energization, is controlled by the control unit 24. The corresponding explanations regarding the control of the operation of the motorized drive unit 22 apply analogously.

[0145] Alternatively to the one in which Fig. 12 In the illustrated embodiment, with the configuration of corresponding electromagnetic or permanent magnet elements, it is also possible to provide permanent magnet elements 34 on the housing side and electromagnetic magnet elements 33 on the locking element side. It is also conceivable to provide electromagnetic or permanent magnet elements 33, 34 on both the housing side and the locking element side. The [details of the illustrations are missing from the original text.] Fig. 9 - 12 The device 1 shown in the illustrated embodiments further comprises a locking position detection device 26 for detecting the closed position of the locking element 15. The locking position detection device 26 is configured to generate at least one acoustic and / or optical locking position signal upon detection of the closed position of the locking element 15 and to output this signal via an output means 27, which may be, for example, a loudspeaker and / or an LED, in particular a multi-colored LED. The locking position detection device 26 comprises optical sensors 28, implemented via a light barrier system, for detecting the closed position of the locking element 15.

[0146] The ones in the ones Fig. 9 - 12 The device 1 shown in the illustrated embodiments also includes a bite detection device 29 for detecting a bait bite. The bite detection device 29 is configured to generate at least one acoustic and / or optical bite signal upon detection of a bitten bait 2 and to output this signal via the output means 27. The bite detection device 29 therefore includes a sensor 30 for detecting a bait bite. The sensor 30 can, for example, detect the weight of the bait 2 arranged on the bait holding device 12, whereby bite-induced weight changes of the bait 2 allow conclusions to be drawn about a bait bite. Likewise, the sensor 30 can detect bite-induced forces acting on the bait 2 and the bait holding device 12, which likewise allow conclusions to be drawn about a bait bite.

[0147] Depending on the bite information, e.g., based on the detection of the weight of the bait 2, the bite detection device 29 can generate different acoustic and / or optical signals. Regarding the output of corresponding information in the form of optical signals, it is conceivable that the weight of a new, unbitten bait 2 could be indicated, for example, by green optical signals and / or by continuously emitted optical signals; the weight of a partially bitten bait 2 could be indicated, for example, by yellow optical signals and / or by an initial flashing frequency; and if the bait 2 is completely consumed, this could be indicated, for example, by red optical signals and / or by a second flashing frequency that is higher than the first.The same applies of course to the output of acoustic signals, whereby in particular the frequency and / or the rhythm of a tone or a sequence of tones can be varied depending on the weight of the bait 2 or the forces acting on the bait 2 or the bait holding device 12.

[0148] Contrary to what is stated in the Fig. 9 - 12 In the illustrated embodiments, in the arrangement of the dispensing device on the housing part 3, i.e., on the top of the cover element 6, it is also possible for the dispensing device or devices 27 to be integrated into an external mobile device, such as a smartphone. In this case, the locking position detection device 26 and / or the bite detection device 29 are configured to communicate with the external mobile device and to transmit the locking position information and / or the bite information to the external mobile device for output at the dispensing device located there. The communication is primarily radio-based, i.e., implemented via Bluetooth, WLAN, etc., which is why the locking position detection device 26 and / or the bite detection device 29 include corresponding radio-based transmitting devices.

[0149] It is evident that a receiving chamber 31 is formed in the receiving space 5, in which electrical and / or electronic components of the device 1, i.e., in particular the control unit 24 and corresponding detection devices 26, 29, as well as, if applicable, devices for their electrical supply, such as electrical energy storage devices, are arranged. The receiving chamber 31 provides protection for these components against external, i.e., in particular climatic and mechanical, influences.

[0150] Both the closing position detection device 26 and the bite detection device 29 are optional and not absolutely necessary for the basic principle according to the invention realized by means of the device 1.

[0151] The Fig. 13 - 17 Each figure shows a schematic representation of a device 1 for holding a bait 2 according to a further embodiment of the invention. It is evident that this is a Fig. 13 to obtain a perspective view of device 1, at Fig. 14 to take a longitudinal section through the in Fig. 13 device 1 shown, at Fig. 15 to get a larger view of the in Fig. 14 detail VII shown, at Fig. 16 to supervise device 1 and at Fig. 17 to get a larger view of the in Fig. 14 detail shown IX.

[0152] As can be seen from the in the Fig. 13 - 17 As shown in the exemplary embodiment, the housing part 3 belonging to the device 1 can also be made up of multiple parts. Here, the housing part 3 consists of an upper housing segment 3a and a lower housing segment 3b. The housing segments 3a and 3b can be fastened to one another by means of retaining clips (not specified in detail). Of course, other fastening principles for attaching the housing segments 3a and 3b to one another are possible.

[0153] On the outer circumference of the lower housing segment 3b, in the area of ​​the end facing away from the upper housing segment 3a, a housing-side fastening device 35 is also arranged, by means of which the housing part 3 can be attached or fastened, in particular detachably, to a wall of the sewer 4.

[0154] The fastening device 35 here comprises an outer ring element 36, e.g. made of steel. The ring element 36 can be fastened via a Fig. 13 Attach the profile-like bracket 37 shown to the wall of a manhole. As can be seen from Fig. 15 As a result, an annular retaining web 38 extends radially from the ring element 36. The retaining web 38 supports a locking element 39 attached to the outer wall 10 of the housing part 3, i.e., the outer wall 10 of the lower housing part segment 3b. The locking element 39, which is also annular in shape, is attached to the housing part 3, i.e., the housing part's outer wall 10, by means of a locking mechanism. The locking mechanism is realized by the interaction of housing outer wall locking elements in the form of locking projections (not shown) and locking element-side counter-locking elements in the form of locking recesses 66, in which the housing outer wall locking elements can engage. Of course, a reverse arrangement is also conceivable, i.e., housing outer wall locking elements in the form of locking recesses and locking element-side locking elements in the form of locking projections.

[0155] In the closed position of the locking body 15, an area of ​​the ring element 36 formed below the retaining rib 38 serves as a contact surface for a sealing element arranged or formed on the outer circumference of the locking body, which is not further specified.

[0156] The locking element 39 serves to ensure the captive arrangement of the locking element 15 on the housing part 3. This is achieved by a locking element-side extension 40, which here is angled, engaging in the housing part-side guide sections 13 formed between the housing part-side outer wall 10 and the inner walls 11, which are radially offset inwards, such that the locking element 15 is prevented from sliding out of the guide section 13 by a extension 41 projecting radially from the upper section of the locking element-side guide elements 14.

[0157] In Fig. 14 It can be seen that the surfaces 42 extending from the closing section 16 of the closing body 15 are slightly inclined, i.e. by 3 to 5°, so that water located on the closing body 15 can flow radially outwards.

[0158] A cylindrical receiving chamber 31 is arranged in the area forming a top or end face of the housing part 3, i.e., the upper housing part segment 3a. The receiving chamber 31 has a cylindrical receiving chamber base body 44 that defines a receiving chamber volume 43 for receiving electrical and / or electronic components of the device 1. The receiving chamber base body 44 can be seen projecting section by section into the receiving space 5 on the housing part side.

[0159] A bait holding device 12 for holding the bait 2 is arranged on a lower section of the receiving chamber base body 44 which projects into the receiving space 5 on the housing side.

[0160] The receiving chamber 31 is detachably attached to the housing part 3, i.e., here the upper housing part segment 3a. The detachable attachment of the receiving chamber 31 to the housing part 3 is achieved, or is achieved, by the positive-locking interaction of the housing part-side mounting sections 45 with the receiving chamber base-side mounting sections 46. The receiving chamber 31 and the housing part 3 are thus each equipped with mounting sections 45 and 46, the interaction of which enables a stable, captive, yet detachable attachment of the receiving chamber 31 to the housing part 3. This can be seen, in particular, from the following: Fig. 17 The result is that a positive-locking interaction of the respective fastening sections 45, 46 means at least a partial interlocking or overlapping of corresponding fastening sections 45, 46.

[0161] The receiving chamber 31 is rotatably mounted on the housing part 3 between a fixed position and a released position. In the fixed position, the mounting sections 45 on the housing part and the mounting sections 46 on the receiving chamber base interact positively, so that the receiving chamber 31 is detachably attached to the housing part 3. In the released position, the mounting sections 45 on the housing part and the mounting sections on the receiving chamber base do not interact, so that the receiving chamber 31 can be detached from the housing part 3. The mounting of the receiving chamber 31 to the housing part 3 can therefore be established and removed by rotating the receiving chamber 31 about an axis of rotation, which typically coincides with the central axis of the receiving chamber 31, relative to the housing part 3.The receiving chamber 31 can therefore be moved from the fixed position to the released position, and vice versa, by rotary movements relative to the housing part 3.

[0162] As can be seen from Fig. 17 The mounting sections 45 on the housing part side are designed as an annular segment disc element 48 projecting radially inwards from an axially oriented cylindrical section 47 of the housing part 3, with at least one shoulder-like mounting projection 49 projecting axially from this. The mounting sections 46 on the receiving chamber base body side are designed as an annular segment disc element 51 projecting radially outwards from a cylindrical extension 50 of the receiving chamber base body 44, with an axially projecting shoulder-like mounting projection 52 that corresponds to, i.e., is oppositely designed or aligned with, the mounting projection 49 formed on the mounting section 45 on the housing part side.

[0163] To achieve corresponding rotational movements of the receiving chamber 31 relative to the housing part 3, the receiving chamber 31 has a groove in the area of ​​a Fig. 16 The upper exposed deck section 53 shown provides a tool engagement area 54 into which a T-shaped tool 55 with an engagement section 57 can engage in a form-fitting manner. As shown in Fig. 16 As shown, the tool 55 engaging in the tool engagement area 54 transmits rotary movements to the receiving chamber 31 in order to move the receiving chamber 31 from the fixed position to the unfixed position, and vice versa. The tool engagement area 54 is clearly designed here with ring-segment-shaped tool receptacles 58 into which the cross-sectionally rounded, tool-side engagement section 57 can engage, so that counterclockwise rotary movements of the tool 55 result in counterclockwise rotary movements of the receiving chamber 31. A stop section 59 is arranged circumferentially opposite the engagement section 57. A circumferentially extending gap 60 is formed between the engagement section 58 and the stop section 59, through which the tool 55 can be inserted into the tool engagement area 54 to interact with it accordingly.

[0164] Due to the arrangement and design of the tool engagement area 54 in the region of an upper exposed cover section 53 of the receiving chamber 31, the tool engagement area 54 is always accessible (from above). The geometric shape of the tool engagement area 54 is adapted to the shape of the tool 55. In this case, the geometric shape of the tool engagement area 54 is such that a T-shaped tool 55 can engage it in a form-fitting manner, so that rotary movements of the tool 55, indicated by the double arrow 56, can be transmitted to the receiving chamber 31.

[0165] Accordingly, the tool engagement area 54 is easily accessible, particularly from above, when the device 1 is properly inserted into a manhole. Due to the suitable design and dimensioning of a corresponding tool 55, it is not absolutely necessary for a user to descend into the manhole to move the receiving chamber 31 from the fastening position to the release position, or vice versa, by means of appropriate rotational movements. The receiving chamber 31 can therefore be detached from the housing part 3 from outside the manhole and, if necessary, removed from the manhole. This can be practical for inspection purposes, e.g., to check whether a bait bite has occurred, thus significantly simplifying and speeding up inspections.

[0166] In particular, since the bait 2 is held by the bait holding device 12 arranged on the receiving chamber 31, the receiving chamber 31 together with the bait holding device 12 and the bait 2 held therein can be removed from the sewer shaft without entering the sewer shaft, any bait bite can be detected, if necessary an exchange or replacement of the bait 2 can be carried out and the receiving chamber 31 together with the bait holding device 12 and the bait 2 held therein can be reinserted into the sewer shaft.

[0167] The Fig. 18 - 21 Each shows a schematic representation of a device 1 for holding a bait 2 according to a further embodiment of the invention. Fig. 18 shows a purely schematic representation of the exemplary embodiment of device 1, Fig. 19 shows a perspective view of the embodiment of device 1, Fig. 20 a longitudinal section through the in Fig. 19 shown representation and Fig. 21 an enlarged view of the in Fig. 20 shown detail.

[0168] The in the Fig. 18 - 21 The device 1 shown additionally comprises a splash guard element 61 to protect against the ingress of water into the receiving space 5 limited by the housing part 3, in particular into an upper area 5a of the receiving space 5 located above the passage opening 9 limited on the bait platform side, in the event of a sudden or sudden rise in the water level in the channel shaft in which the housing part 3 is to be inserted or is inserted.

[0169] The surge protection element 61 is arranged below the bait platform 8 on the housing side. The surge protection element 61 has a ring- or cylinder-shaped base body 62, which defines a water surge absorption volume 63 for receiving a specific quantity of water flowing in the or a sewer shaft. A sudden surge in the water level in the sewer shaft, caused, for example, by heavy rain, thus leads to the water initially penetrating the water surge absorption volume 63 from below and filling it.

[0170] The closing element 15, designed here as a floating body, is movably mounted within the base body 62 of the surge protection element 61, i.e., within the water surge absorption volume 63, such that, when the water level in the water surge absorption volume 63 rises due to the entry of water into it, it moves from the position in the Fig. 18 , 19shown disclosure in the Fig. 18 The closed position is indicated by the dashed line. The movable mounting of the locking element 15 is supported by a bracket 64 on the housing side, here in the form of an angled gallows bracket; a simple hanging bracket would also be conceivable, as e.g. in Fig. 18 demonstrated, implemented, or supported.

[0171] In the closed position, the closing element 15, with a closing section 16, rests in a section-by-section sealing manner against contact sections 17 formed on the bait platform-side edges, which define the passage opening 9 on the bait platform side. The sealing contact of the closing element 15 against the corresponding bait platform-side contact sections 17 prevents water from penetrating the upper area 5a of the housing-side receiving chamber 5. There is no possibility of water entering the upper area 5a of the receiving chamber 5 and being contaminated there by the substances contained in the bait 2.

[0172] The base body 62 of the surge protection element 61 is shown here open, i.e., without a base surface. However, it is of course possible that the base body 62, on its side facing away from the bait platform 8, includes a base surface with at least one surge water inlet opening. The closing element 15 can then be positioned, at least partially, within the surge water inlet opening when in the open position. As the water level rises, the closing element 15, which, as mentioned, is designed as a float, lifts itself away from the surge water inlet opening, allowing water to enter the surge water absorption volume 63 until the closing element 15 is finally moved from the open position to the closed position, as described.

[0173] The basic body 62 of the splash guard element 61 comprises in the Fig. 18 In the illustrated embodiment, a number of feet 65, e.g., web-like, are provided for supporting the base body 62, and optionally also the housing part 3 arranged on it, along with the components of the device 1 arranged or attached therein. Of course, the base body 62 can also be completely flat on its bottom or end face, thus eliminating the need for such feet 65.

[0174] Based on Fig. 19 It is again evident that the device 1 can be attached to the wall of a manhole via a corresponding fastening device 35. The fastening device 35 comprises an outer ring element 36, e.g., made of steel. As mentioned, the ring element 36 can be attached to the wall of a manhole via a profile-like bracket 37. This is evident from the illustration in Fig. 19 In the illustrated embodiment, the splash guard element 61 does not have corresponding feet 65. To ensure stable mounting of the device 1 on a surface, the profile-like support 37 is extended and includes a bearing leg 67 projecting from it at an angle, in particular perpendicularly, which can therefore be described or considered as the base of the device 1.

[0175] The splash guard element 61 is attached to the housing part 3 by means of screw connections. Accordingly, both the splash guard element 61 and the housing part 3 are provided with screw receptacles 68 on their outer circumferences, which can be penetrated by screw-like connecting elements, in particular threaded screws (not shown in detail). Of course, it is also conceivable to provide corresponding screw receptacles 68 on the inner circumferences.

[0176] From the in Fig. 20 The sectional view shown shows that the ring element 36 is arranged between the splash guard element 61 and the housing part 3. Based on the Fig. 21 The detail shown shows that the splash guard element 61 is provided with corresponding radially projecting annular retaining webs 69, which form a bearing point for the ring element 36. The housing part 3 is provided with a radial extension 70 in the area of ​​its free end facing the splash guard element 61, into which the ring element 36 engages with the area of ​​its end facing the housing part 3. A sealing element 71, here in the form of a sealing ring, is arranged or formed between the housing part 3 and the ring element 36.

[0177] Fig. 22 - 34 Each figure shows a schematic representation of a device 1 for holding a bait 2 according to further embodiments of the invention. It is evident that this is a device 1 for holding a bait 2. Fig. 22 to provide a perspective view of a device 1 according to a further embodiment (the housing part 3 is shown transparently here for illustrative purposes), at Fig. 23 to take a cross-section through the in Fig. 22 device 1 shown, in which Fig. 24 , 25 each by a longitudinal section through the in Fig. 22 device 1 shown, at Fig. 26 to provide a perspective view of a device 1 according to a further embodiment, in which Fig. 27 to perform a longitudinal section through a device 1 according to a further embodiment, at Fig. 28 to take a cross-section through the in Fig. 27 device 1 shown and in the Fig. 29 bis 34 about devices 1 according to further embodiments.

[0178] Based on the Fig. 22 , 23Figure 1 shows a mounting of the locking element 15 that is movable relative to the bait platform 8 by means of a clamp- or clip-like retaining element 72 which is movable, in particular pivotable, and mounted on the housing part 3, i.e., on the bait platform 8. The retaining element 72, which can also be referred to as a retaining clamp or retaining clip, is attached on one side, in particular at one end, to the housing part 3 or the bait platform 8, and on the other side, in particular at the other end, to the locking element 15. A specific path of movement is defined by the connection of the locking element 15 to the retaining element 72, the connection of the retaining element 72 to the housing part 3 or the bait platform 8, and the geometric dimensions, i.e., in particular the shape, of the retaining element 72. This path of movement is followed by the locking element 15 when moving from the open position to the closed position, and vice versa (see in particular the following). Fig. 24 , 25 , which places the locking element 15 in the open position ( Fig. 24 ) and in the closed position ( Fig. 25 ) show.

[0179] The retaining element 72 comprises two retaining element sections 72a, 72b that run at an angle to each other. Based on Fig. 23 It can be seen that the retaining element sections 72a, 72b engage through the passage opening 9, which is limited on the bait platform side, when the closing body 15 is in the open position. The retaining element sections 72a, 72b are bent in an L-shape. The retaining element 72 thus has a (essentially) L-shaped geometric form.

[0180] Based on the in the Fig. 22 - 26 The illustrated embodiments further show a particularly advantageous fastening device 73, by means of which the housing part 3 can be attached, in particular detachably, to a wall of a sewer 4, in particular a manhole. The fastening device 73 comprises a ring-shaped first fastening element 74 that encompasses the outer circumference of the housing part 3 and is attached to the housing part 3 by means of fastening clips 76 screwed to the housing part 3, and at least one second fastening element 75 for attaching the first fastening element 74 and the housing part 3 attached thereto to the wall of a sewer 4 or a manhole. The fastening device 73 enables a stable fastening of the housing part 3 to a wall of a sewer 4 or a manhole, particularly with regard to forces acting on the housing part 3 caused by flooding or surge water.The fastening of the second fastening element 75 to the wall of a sewer 4 or a manhole is effected by fastening bolts 78 or screws extending from or passing through horizontal or vertical bores 77 on the side of the second fastening element 75, which may be provided with a thread, and which can be anchored stably in the wall of a sewer 4 or a manhole, e.g. by masonry or screws.

[0181] The fastening device 73 is evidently designed in multiple parts. To implement buoyancy protection, the second fastening element 75 comprises a fastening element section 75a that overlaps the housing part 3 on its upper side, forming a buoyancy protection feature. The housing part 3 is thus protected against buoyancy forces caused by floodwater or surge water and is fixed in its position, particularly vertically, to the sewer 4.

[0182] All components of the fastening device 73 are made of or comprise one or more mechanically stable and corrosion-resistant materials, e.g. stainless steels, or material structures.

[0183] Based on the in Fig. 26 In the illustrated embodiment, it can be seen that several corresponding fastening element sections 75a may be present. Fig. 26 Two leg- or strut-like fastening element sections 75a, extending at an angle to each other, preferably in a V-shape, are shown, which are connected to each other via a further leg- or strut-like fastening element section 75a.

[0184] The ones in the ones Fig. 22 - 26 In the illustrated embodiments, the fastening element sections 75a are detachably attached to the exposed upper surface of the housing part 3 in a form-fit manner (without damage or destruction). The fastening is thus achieved by a positive locking mechanism, i.e., through the positive locking interaction of positive locking elements 79 on the fastening element sections 75a with corresponding positive locking elements 80 on the housing part 3. The positive locking elements 79 formed on the respective fastening element sections 75a are designed as openings, while the positive locking elements 80 formed on the housing part 3 are formed by, in particular vertical, projections which, in the fastened state, engage in or through corresponding openings.

[0185] Based on the in Fig. 26 As can be seen in the illustrated embodiment, the respective fastening element sections 75a are designed with stiffening structures 81, in particular cross-section-reducing structures, to increase the mechanical stability of the fastening element sections 75a. In this way, the material thickness and thus the weight of the fastening device 73 can be reduced without compromising the mechanical stability of the fastening device 73. The corresponding stiffening structures 81 are, in the Fig. 26 The illustrated embodiment has beads.

[0186] The respective fastening element sections 75a are in the in the Fig. 22 - 26 In the illustrated embodiments, the fastener sections 75a are designed as separate components and are detachably (without damage or destruction) attached to a profile-like base body of the second fastener 75 by means of screw bolts 82, i.e., a screw fastening. Of course, the fastener sections 75a could also be formed integrally with the second fastener 75.

[0187] In the Fig. 24 , 25 An optional monitoring device 83 for monitoring at least a part of the recording space 5 bounded by the housing part 3 is shown. The monitoring device 83 is arranged on the recording chamber 31 such that the most extensive possible monitoring of the recording space 5 can be achieved. The monitoring device 83 comprises suitable optical sensors for monitoring the recording space 5. The monitoring device 83 is shown in the Fig. 24 , 25The illustrated embodiments are designed as infrared sensors or cameras.

[0188] The monitoring device 83 makes it possible to record and evaluate all processes within a specific area or sub-area of ​​recording room 5. In particular, rodent-related processes can be recorded, evaluated, and assessed quantitatively and / or qualitatively. Processes of particular interest to be monitored quantitatively and / or qualitatively include, for example, rodents entering recording room 5, rodents exiting recording room 5, and the behavior, i.e., especially the biting and / or movement patterns, of rodents entering recording room 5, etc. Generally, the frequency of use of recording room 5 per specific unit of time can be recorded, evaluated, and assessed quantitatively and / or qualitatively. Since the monitoring information recorded by the monitoring device 83...Since the data can of course be transmitted via a communication link, in particular a radio-based one, to a user-side, in particular mobile, external terminal device 92 via a suitable communication device 91, monitoring of all processes in the recording room 5 can be carried out via a corresponding monitoring device 83 without the need to enter the manhole or sewer 4 equipped with the device 1. Communication is expediently radio-based, i.e., via Bluetooth, WLAN, etc., which is why the monitoring device 83 includes or is connected to a corresponding radio-based transmitter (not shown).

[0189] The monitoring device 83 is supplied with electrical energy via a rechargeable electrical energy storage device 84 located in the receiving chamber 31. The energy storage device 84 is an electrochemical energy storage device in the form of a rechargeable battery. The use of an inductive energy storage device, i.e., one rechargeable by electromagnetic induction, would also be conceivable.

[0190] Based on the in the Fig. 22 - 25 In the illustrated embodiment, a sectional surface structuring 85 of the cap-shaped or spherical segment-shaped closing element 15 can also be seen. The surface structuring 85 facilitates access to the bait platform 8 for a rodent via the closing element 15. The surface structuring 85 is formed by a step- or rib-like structure of the disc-shaped section of the spherical segment-shaped closing element 15 and provides a grip or traction for a rodent entering the closing element 15. The surface structuring 85 inhibits or prevents the rodent from slipping off the closing element 15 and thus serves as an "entry aid" for accessing the bait platform 8. Conversely, a corresponding surface structuring 85 also serves as an "egress aid" for a rodent to leave the bait platform 8.Furthermore, the locking body 15 has a ring-shaped section 86, which also serves as a corresponding "entry aid" or "egress aid".

[0191] In Fig. 23 Furthermore, an area 87 for a bait 2 is shown, limited by a wall 88 projecting at an angle, in particular vertically, from the bait platform 8.

[0192] The in the in the Fig. 27 , 28 The illustrated embodiment shows a special mounting of a corresponding energy storage device 84. The energy storage device 84 is mounted on a base plate 94 which is (detachably) attached to a base section 93 of the receiving chamber 31 projecting into the receiving space 5. The base plate 94 is attached to the base section 93 by means of fastening screws not specified in detail (see figure). Fig. 28 A sealing element 96 in the form of a sealing ring is evidently located between the base plate 94 and the base section 93. Another, unspecified sealing element is located between the receiving chamber 31 and the housing part 3.

[0193] The base plate 94 is provided with angled, in particular vertical, projecting walls 95, which define a receiving area for the energy storage device 84. The energy storage device 84 can typically be positioned precisely within this receiving area. The base plate 94, together with the energy storage device 84 mounted on it, can thus be considered a separate assembly that can be attached to the receiving chamber 31 and can be easily detached from and reattached to the receiving chamber 31, for example, during a replacement or recharging process of the energy storage device 84.

[0194] The monitoring device 83 and the communication device 91 are clearly arranged to the side of the energy storage unit 84 on the floor section 93. An opening 95 is provided on the floor section side for the monitoring device 83.

[0195] Based on the in the Fig. 29, 30 The illustrated embodiments show another possibility for the movable mounting of a closing element 15 by means of a flap device 89. According to the illustration in Fig. 29 In the illustrated embodiment, a flap element 90 is mounted to be movable, in particular pivotable, relative to the bait platform 8. In an open position, it is moved away from the bait platform 8 such that the passage opening 9, which is bounded on the bait platform side, is opened. In a closed position (shown with dashed lines), it is moved towards the bait platform 8 such that the passage opening 9, which is bounded on the bait platform side, is closed. The closing element 15 can be an integral part of the flap assembly 89 in the form of a corresponding flap element 90. Of course, it would also be possible to attach a separate closing element 15 to a corresponding flap element 90. The closing element 15 can be designed as a float or at least comprise a float.

[0196] Based on the in Fig. 30 In the illustrated embodiment, it can be seen that a corresponding flap device 89 can also comprise several flap elements 90, which in a respective open position are moved away from the bait platform 8 such that the passage opening 9 limited on the bait platform side is released, and in a respective closed position (shown in dashed lines) are moved towards the bait platform 8 such that the passage opening 9 limited on the bait platform side is closed by the flap elements 90 together. In the Fig. 30 In the illustrated embodiment, respective closing elements 15 are arranged on the respective flap elements 90.

[0197] Based on the in the Fig. 31 bis 34 The illustrated embodiments show that several bait platforms 8 can be arranged in the housing part 3. Each bait platform has at least one closing element 15, which is movably mounted relative to at least one bait platform 8. In an open position, the closing element 15 is moved away from the respective bait platform 8 such that the respective at least one through-opening 9, bounded on the bait platform side, is released. In a closed position, it is moved against the respective bait platform 8 such that the respective at least one through-opening 9, bounded on the bait platform side, is closed. The described principle of the hermetically sealing closure of a through-opening 9 bounded on the bait platform side by means of a closing element 15 moved into a corresponding closed position therefore applies equally here.

[0198] The bait platforms 8 are clearly arranged above or below one another. Several bait platforms 8 can be arranged parallel, at least in sections. A gap 97 defining an intermediate level is formed between two adjacent bait platforms 8. The gaps 97 communicate with each other via passageways 9 bounded by the respective bait platforms; thus, there is a passageway between the individual bait platforms 8, i.e., from a "lowest" bait platform 8 to a "highest" bait platform 8.

[0199] Corresponding gaps 97 result in a flow-related "calming," or more generally, an influencing of the flow, of water rising in the housing part 3. The water flowing into and rising in the housing part 3 must therefore make its way upwards via several intermediate levels, which leads to a "calming" of the water flow. Furthermore, the respective bait platforms 8 can be provided, at least in sections, with a surface structure (not shown) that influences the flow, in particular the type of flow or the flow velocity, of the water flowing along or rising in the housing part 3, e.g., in the form of flow-influencing ribs and / or grooves.

[0200] The passage openings 9, each defined by a bait platform 8, are visibly arranged offset from one another. This offset arrangement of the passage openings 9 also allows for the "calming" of water rising in the housing section 3. Furthermore, the offset arrangement of the passage openings 9 facilitates the movement of a rodent between the respective spaces 97 or intermediate levels.

[0201] Based on the Fig. 32 , 33It can be seen that a bait platform 8 can be designed, at least in sections, with a bait platform section that is inclined, bent, or curved relative to at least one other, particularly adjacent, bait platform 8. By means of corresponding inclined, bent, or curved profiles of such bait platforms 8, the flow of water rising in the housing part 3 can also be influenced. Inclined, bent, or curved profiles of such bait platforms 8 also facilitate the ascent and descent of rodents between the respective spaces 97 or intermediate levels, acting as ramps.

[0202] As in Fig. 31 As an example for the lowest bait platform 8, a further measure to influence the flow of water rising in the housing section 3 can be the design of a bait platform 8, at least in sections, with unspecified bore-like openings or perforations penetrating this flow. Such openings, generally resembling a perforated (sheet metal) structure, can "dampen" and thus "calm" the flow of rising water. The openings are clearly present in addition to the respective through-openings 9 and differ from them, particularly in their size, especially their diameter; the openings are small compared to the respective through-openings 9. For example, rounded openings can have a diameter between 50 µm and 3 mm, and particularly between 100 µm and 2 mm.

[0203] In general, i.e., fundamentally independent of the provision of multiple bait platforms 8, it should be noted that when water flows into or rises into the housing part 3, a back pressure develops within the housing part 3 due to its volume (internal volume) and its tightness. This back pressure opposes the inflowing or rising water. This is because the air inside the housing part 3 is compressed by the inflowing and rising water. Consequently, the rising water within the housing part 3 becomes increasingly difficult due to the developing back pressure.

[0204] Based on the in Fig. 33 In the illustrated embodiment, it can be seen that at least one bait platform 8 can be designed to extend at least partially through the housing part 3 in a spiral or helical shape. A rodent that has entered the housing part 3 can easily move within it via a correspondingly spiral or helical bait platform 8, for example, to reach a bait 2. Spiral or helical bait platforms 8 can also influence the flow of water rising within the housing part 3.

[0205] It is evident in the Fig. 31 bis 34 Different storage options for the corresponding closing elements 15 are shown. These can, of course, be combined as desired. The number and arrangement of the respective closing elements 15 on the respective bait platforms 8 are also purely exemplary and can be combined as desired. The same applies, of course, to the number and arrangement of the respective bait platforms 8.

[0206] Based on the in the Fig. 35 bis 37 The illustrated embodiments demonstrate the possibility of a linearly movable guide for the housing part 3 inserted into a channel shaft 98 along or relative to a wall of the channel shaft 98. The housing part 3 is therefore not fastened by a corresponding fastening device 35, 73, but is guided, in particular linearly, along or relative to a wall of the channel shaft 98 by means of a guide device 99. Such a guide device 99 thus makes it possible for the housing part 3 inserted into the channel shaft 98, together with components of the device 1 arranged therein and / or therein, to move within the channel shaft 98, in particular linearly. Movements of the housing part 3 occur along a vertically extending axis of movement, indicated by the vertically oriented double arrow, i.e., along a symmetry or central axis of the channel shaft 98.The housing part 3 is guided in a movable manner via the guide device 99 to prevent tilting in the channel shaft 98; the guide device 99 thus prevents the housing part 3 from tilting in the channel shaft 98.

[0207] In the embodiment according to Fig. 35 A guide device 99 is shown, comprising several wheel- or roller-like guide elements 100 distributed on or around the housing part 3, by means of which the housing part 3 is guided along the wall of the channel shaft 98 in a rolling manner. The corresponding wheel- or roller-like guide elements 100 rest directly against the wall of the channel shaft 98, so that no special provisions are necessary on the wall side to achieve the movable guidance of the housing part 3. Specifically, the wheel- or roller-like guide elements 100 are wheels or rollers.

[0208] The wheel- or roller-like guide elements 100 are mounted on a holding device 101 arranged on or formed within the housing part 3. The wheel- or roller-like guide elements 100 are clamped against the wall of the manhole 98 via the holding device 101. This mounting and clamping ensures secure vertical positioning of the housing part 3 within the manhole 98. The clamping force is selected to prevent uncontrolled lowering of the housing part 3, while still allowing vertical movement of the housing part 3, e.g., caused by surge water-induced buoyancy forces, particularly towards a manhole cover 102 or an upper manhole opening.

[0209] The holding device 101 comprises retaining arms 103 which are hinged or pivotable on the housing part 3 and which can be hinged or pivoted against the wall of the channel shaft 98. The retaining arms 103 are coupled to a clamping element 104, in particular a spring element, e.g., in the form of a compression spring. A clamping force, in particular a spring force, is exerted on the retaining arms 103 via the clamping elements 104 arranged between the housing part 3 and the respective retaining arms 103, clamping the guide elements 100 against the wall of the channel shaft 98. Using a holding device 101 designed in this way, the housing part 3 can be inserted into a plurality of channel shafts 98 with different diameters and clamped (at an angle) against the channel shaft walls.

[0210] A holding device 101 is shown in dashed lines, comprising, in particular, telescopically extendable holding arms 103, which are radially extendable (with respect to the symmetry or central axis of the housing part 3 or the channel shaft 98) against the walls of the channel shaft 98 (see the horizontal double arrow). These holding arms 103 can be coupled analogously with corresponding clamping elements 104, in particular spring elements, e.g. in the form of compression springs.

[0211] In the embodiment according to Fig. 36 A guide device 99 is shown, comprising a gear-like linear guide element 105 on the housing part side and a corresponding rack-like linear guide element 106 on the (channel shaft) wall side, which interacts with it. The housing part 3 is guided linearly along the wall of the channel shaft 98 by means of the guide device 99. In this case, the guide device 99 therefore also includes wall-side guide elements in the form of corresponding rack-like linear guide elements 106. The housing part-side and wall-side linear guide elements 105, 106 are in mechanical engagement or a mechanical operative connection, i.e., they interact to form a corresponding linear guide.

[0212] For those in the Fig. 35 und 36 In the illustrated embodiments, it is equally true that the respective guide devices 99 can comprise a drive device (not shown) that can be coupled to or is coupled to at least one guide element 100 or linear guide element 105, 106, and which is configured to transmit a drive force to the guide elements 100 or linear guide elements 105, 106, causing them to move in a unidirectional or bidirectional direction. Such a drive device can be arranged on or in the housing part 3. Alternatively or additionally, a corresponding drive device can also be arranged on or in a corresponding guide element 100 or linear guide element 105, 106, i.e., integrated into a wheel- or roller-like guide element 100 or into a gear.A suitable drive device can be an electric motor, whose energy supply is analogous to the energy supply of other electrical or electronic components of the device 1.

[0213] Based on the exemplary embodiment according to Fig. 37 It can be seen that a guide device 99 can also include a profile- or rod-like guide element 107, which is attached in the channel shaft 98 and arranged on or penetrates the housing part 3, particularly axially. The housing part 3 is also guided so as to be linearly movable relative to the profile- or rod-like guide element 107. This also includes the attachment of the housing part 3 to the profile- or rod-like guide element 107, which in turn is attached to the channel shaft, i.e., embedded in masonry, screwed in, etc. It is evident that in this embodiment, the profile- or rod-like guide element 107 does not rest directly against a channel shaft wall, but is arranged concentrically within the channel shaft 98. Such a profile- or rod-like guide element 107 can also be used in the embodiment according to Fig. 35 It may be useful, which is why it is also shown there with dashed lines, as it is optional.

[0214] Based on the exemplary embodiment according to Fig. 37 It is further evident that floats 108 may be present to realize or support movements of the housing part 3 in the channel shaft 98. The positioning of the floats 108 on the housing part 3 is above the closing element 15, shown with dashed lines because it is located inside the housing part 3, so that water rising in the channel shaft 98 only reaches the floats 108 on the housing part side when the closing element 15 is already in the closed position. As shown in Fig. 37 As shown, it is possible to arrange separate floats 108 on the housing part 3.

[0215] Alternatively or additionally, the housing part 3 can already be designed with integrated floats 108. This can be achieved structurally, for example, by a housing part wall that defines or has at least one cavity. The cavity is, for example, filled with air. It is also conceivable to manufacture a housing part wall from a low-density material that floats on a water surface due to the density difference and does not sink. In all cases, upward movement of the housing part 3 is induced by a rise in the water level in the channel shaft 98, and downward movement of the housing part 3 is induced by a fall in the water level in the channel shaft 98.

[0216] In all embodiments, the housing part 3 can be provided with stiffening structures to increase its mechanical stability. These stiffening structures can be, for example, ring-shaped or rib-like. They can be separate components that are attached to or connected with the housing part 3, or they can be integrally formed with the housing part 3.

[0217] All embodiments of the device 1 shown in the Fig., or individual or several features of the embodiments shown in the Fig., can be combined with each other as desired.

Claims

1. Device (1) for holding a bait (2) for animals, such as pests, in particular rodents and / or insects, comprising a housing part (3) that can be used in a sewer shaft, in particular a sewer shaft or a cable duct shaft, which has at least one limited receiving space (5) by at least one wall, in particular at least one housing part wall, wherein at least one passage opening (9) is formed through which an animal can reach at least one bait (2) arranged in the receiving space (5), characterized by at least one anti-swelling element (61) for protection against the penetration of water into the receiving space (5) limited by the housing part (3) at a plump-like rising water level in a sewer shaft.

2. Device according to claim 1, characterized in that the at least one or at least one wall-limited passage opening (9) is formed in a side wall or part of a side wall of the housing part (3) forming housing part wall, and / or the at least one or at least one wall-limited passage opening (9) is formed in a ceiling wall or part of a ceiling wall of the housing part (3) forming housing part wall.

3. Device according to claim 1 or 2, characterized in that the at least one or at least one wall-limited passage opening (9) is formed in a wall of a housing part (3) connectable or connected receiving chamber (31), in particular a side wall of the receiving chamber (31) forming receiving chamber wall and / or a floor wall of the receiving chamber (31) forming receiving chamber wall or a ceiling wall of the receiving chamber (31) forming receiving chamber wall.

4. Device according to one of the preceding claims, characterized by at least one bait platform (8) arranged or formed in the housing part (3), which limits at least one passage opening (9) through which an animal can reach at least one bait (2) arranged in the receiving space (5), in particular to a bait (2) arranged on the bait platform (8) and / or to a bait holding device (12) mounted on at least one bait holding device (12) arranged in the receiving space (5).

5. Device according to one of the preceding claims, characterized in that in the housing part (3) several bait platforms (8) are arranged, wherein an intermediate plane defining space (97) is formed between two adjacently arranged bait platforms (8).

6. Device according to one of the preceding claims, characterized by at least one closing body (15), which is movably mounted relative to the housing part (3), wherein the closing body (15) is movable in an open position, in which the at least one or at least one wall-limited passage opening (9) is released, and is movable in a closing position, in which the at least one or at least one wall-limited passage opening (9) is closed.

7. Device according to claim 6, characterized in that the at least one or at least one closing body (15) is formed as a floating body or comprises at least one floating body.

8. Device according to a claim 6 or 7, characterized in that several closing bodies (15) are present, wherein at least two closing bodies (15) are motion-coupled via at least one coupling element (110) in such a way that they can be moved together in a respective or in the direction of a respective closing position and / or open position.

9. Device according to one of the preceding claims, characterized in that in or at or at least one in the by the housing part (3) limited receiving space (5) arranged or formed receiving chamber (31) at least one, in particular optical, monitoring device (83) for monitoring at least a part of the by the housing part (3) limited receiving space (5) is arranged or formed.

10. Device according to one of the preceding claims, characterized by a fastening device (73), via which the housing part (3), in particular detachable, is fastened to a wall of a sewer (4), in particular a sewer shaft, wherein the fastening device (73) comprises at least one of the housing part (3) circumferentially surrounding the outside, in particular annular, first fastening element (74) and at least a second fastening element (75) for fastening the first fastening element (74) to the wall of a sewer (4).

11. Device according to any one of claims 1 to 9, characterized by at least one guide device (99) for the, in particular linear, movable guide of the housing part (3) inserted into a channel shaft (98) relative to a wall of the channel shaft (98).

12. Device according to one of the preceding claims, characterized in that at least one, optionally additional, float (108) is formed or arranged on or in the housing part (3).

13. Device according to one of the preceding claims, characterized in that several passage openings are present.

14. Sewer shaft, in particular sewer shaft or cable duct shaft, comprising at least one device (1) according to one of the preceding claims.