Telescopic double-handle shaft

Abstract

In a device comprising an elongate member and a first grasping handle associated therewith for gripping or manipulating the device, the present invention provides improvements in the form of a second grasping handle and an extension member operatively associated with the elongate member. The extension member is configured to adjustably and fixedly position the second grip handle in any of a plurality of fixed positions spaced a distance from the first grip handle, including a non-operative position and a plurality of operative positions. When the second grasping handle is in the operating position, the first user can grasp the first grasping handle, and the second user can grasp the second grasping handle. When in the non-operative position, the second grip handle is connected to the first grip handle or is located at least partially or entirely within the first grip handle.

Description

[0001] Cross-reference to related applications This application claims the rights of U.S. Provisional Application No. 63 / 513,854, filed July 14, 2023, and U.S. Provisional Application No. 63 / 580,421, filed September 4, 2023, the entire contents of which are expressly incorporated herein by reference. Technical Field

[0002] This invention relates to a dual-handle retractable shaft structure for various devices. In a particularly preferred embodiment, the device is an umbrella, wherein each grip handle can be held or grasped by different users, such as two people of different heights, like a couple or parents and children. Other embodiments relate to other devices in which two handles are provided to improve the operation of the device, since each handle can be grasped by the same or different users. Background Technology

[0003] Various devices exist in this field that are operated by a handle attached to a shaft. One example is an umbrella, which is typically supported by metal ribs and has a folding canopy usually mounted on a metal or plastic pole or shaft. Umbrellas are primarily handheld portable devices sized for personal use and can generally be divided into two categories: fully foldable umbrellas, in which the metal poles supporting the canopy retract, making the umbrella small enough to fit in a handbag; and non-foldable umbrellas, in which the support poles cannot retract and only the canopy can be folded. Another distinction can be made between manually operated umbrellas and spring-loaded automatic umbrellas that spring open when a button is pressed. Commercial umbrellas use a single handle for the user to grip.

[0004] Some existing references disclose providing multiple handles on a shaft. For example, U.S. Patent 10,143,276 discloses a two-handle umbrella, wherein the umbrella includes a pole operatively associated with a first upper user grip handle to keep the umbrella upright, and wherein the umbrella also includes a second lower handle spaced apart from and below the first upper user grip handle, the first upper user grip handle being provided by an extension member. This extension member is adjustable to position the second lower handle at different distances from the first upper user grip handle, such that a person shorter than the user can hold the umbrella by gripping the second lower handle. Other references disclosing multiple handles include U.S. Patent 7,726,326, French Application FR 3017517, and PCT Application WO 2016 / 050999. The two handles disclosed in these documents are always spaced apart from each other.

[0005] It has now been found that there is a need to improve this multi-handle device, especially for umbrellas, and the present invention now provides various necessary improvements. Summary of the Invention

[0006] The present invention now provides an improved device comprising an elongated member and an associated first grip handle for holding or manipulating the device, the improvement comprising a second grip handle and an extension member operatively associated with the elongated member, wherein the extension member is capable of adjustingly and permanently positioning the second grip handle in any of a plurality of positions spaced apart from the first grip handle, including a non-operating position and a plurality of operating positions, wherein the second grip handle is in the operating position, a first user is able to grip the first grip handle, and a second user is able to grip the second grip handle; and wherein, in the non-operating position, the second grip handle is connected to the first grip handle, or at least partially or completely located within the first grip handle.

[0007] Typically, a first gripping handle is attached to an elongated member, and a second gripping handle is attached to an extension member. Preferably, the second gripping handle in a non-operating position is attached to the first gripping handle. In one embodiment, one of the first or second gripping handles includes a snap-locking recess, and the other includes a protrusion received in the snap-locking recess to attach the first or second gripping handles together in the non-operating position. The device may also include a release member to release the second handle for deployment when the second gripping handle is to be moved to an operating position. The release member is operatively associated with a spring and provides sufficient force to disengage the protrusion from the snap-locking recess as well.

[0008] In one embodiment, the second gripping handle in the non-operating position may be at least partially or completely located within the first gripping handle. Alternatively, the first gripping handle in the non-operating position may be at least partially or completely located within the second gripping handle.

[0009] The device typically includes an elongated member such as a rod, tube, pipe, sleeve, or hollow rod, and an extension member is a rod, tube, rigid tube, bar, or solid rod member configured to move relative to the elongated member. The elongated member, extension member, or each of them may have a telescopic structure, with one member housed within the other to facilitate movement between them. If desired, the device may include a conventional distance-limiting member operatively associated with the elongated member or extension member, or both, to prevent separation of the extension member from the elongated member.

[0010] The device preferably includes a biasing member that provides force to push the extension member to the operating position, a locking member that locks the biasing member in the non-operating position, and an engaging member that releases the locking member when the second gripping handle is to be moved to the operating position.

[0011] The device may further include a locking mechanism for holding the extension member in an operational position, wherein the locking mechanism for holding the extension member in the operational position includes a torsion locking mechanism that engages by torsion of the extension member relative to the elongated member. The locking mechanism preferably includes a cam-locking interlock that provides a lockable position along the axis of the elongated member. The cam-locking interlock includes a cam or protrusion constructed in an inner surface of the interlock, the cam or protrusion being arranged to press against the extension member when the interlock is locked and not press against the extension member when the interlock is unlocked.

[0012] In one configuration, the first grip handle includes a generally cylindrical portion for gripping by a first user's hand, and the second grip handle includes a generally cylindrical portion for gripping by a second user's hand. Additionally, the elongated member may include a telescopic extension.

[0013] Suitable devices for use in this invention include, but are not limited to, umbrellas, ceiling light bulb replacement devices, rubber scrapers, brushes, cleaning tools, wrenches, or surgical instruments.

[0014] In a preferred embodiment, the present invention relates to an umbrella having a canopy and an extendable dual-handle shaft structure as described herein. In such an umbrella, first and second grip handles in a non-operating position can be attached to each other, and in some arrangements, one of the first and second grip handles is partially or completely retracted into the other handle. The elongated member may include a telescopic extension and a torsion locking mechanism for positioning at least one handle.

[0015] The canopy can be deployed from the end of the elongated member opposite the first grip handle. Typically, the canopy and the second handle can be deployed when engaged with a deployment member associated with one of the first or second handles, wherein the deployment member is a button or knob located on the side or bottom of the second handle. Moreover, the canopy is constructed to be large enough to accommodate two users beneath it. Attached Figure Description

[0016] A more complete understanding of the invention can be obtained by viewing the accompanying drawings, which provide details of preferred embodiments, wherein: Figure 1 A side view depicting the unfolded configuration of an integral double-handled umbrella according to an embodiment of the present invention is shown. Figure 2 A side view of a shortened form of a double-handled umbrella according to another embodiment of the present invention is shown; Figure 3 This is a view of the umbrella with its two handles in the extended position; Figure 4 This is a view of the umbrella with its two handles in the closed or locked position; Figure 5 This is a cross-sectional view of a locking mechanism used to attach the second handle to the first handle; Figure 6 This is a view of the lower surface of the second handle to show the buttons for unfolding the second handle; Figure 7 This is a view of the lower surface of the second handle to show the knob used to unfold the second handle; Figure 8 This is a view of another embodiment of the double-handled umbrella according to the present invention, wherein the second handle is spaced apart from the first handle; Figure 9 It is based on Figure 8 Another view of the double-handled umbrella, in which the second handle is partially inserted into the first handle; Figure 10 It is based on Figure 8 Another view of the double-handled umbrella, in which the second handle is almost completely inserted into the first handle; Figure 11 This is a side view of a compact form of an integral double-handled umbrella according to another embodiment of the present invention; Figure 12 yes Figure 11 The view shown is of an overall double-handled umbrella, in which the second handle is substantially fully inserted into the first handle; Figure 13 yes Figure 11 A schematic diagram of the double-handled umbrella of the present invention, wherein the second handle is just released from the non-operating position and begins to extend from the first handle; Figure 14 yes Figure 11 The side view of the double-handled umbrella shown indicates that the second handle is in the non-operating position; Figure 15 yes Figure 11 The view shown is of the entire double-handled umbrella in its extended state, with the second handle as far away from the first handle as possible. Figure 16 yes Figure 11 The image shows a side view of a two-handled umbrella in a partially extended position, with the second handle essentially in place. Figure 14 and 15 The intermediate position between the compact and extended forms shown; and Figure 17 This is a perspective view of a preferred double-handle and canopy support structure for an umbrella. Detailed Implementation

[0017] The following definitions generally describe the parameters of the most preferred embodiment of the invention, illustrated by an umbrella with an extendable double handle as described herein. As is well known, an umbrella is a device that protects the user from various factors, particularly from liquids, freezing rain, or even the sun. A conventional umbrella consists of the following parts: a pole, canopy, ribs, sliding ring, springs, and metal clamps. The pole is a metal or wooden shaft extending between the bottom handle and the top canopy. The canopy is the fabric portion of the umbrella that traps rain, wind, and sun. The ribs are the structural and shape-giving parts of the umbrella. The outer ribs support the canopy, while the inner ribs (sometimes called support ribs) serve as supports and connect the outer ribs to the pole. The sliding ring slides up and down along the pole while connected to the ribs / support ribs and is responsible for opening and closing the canopy. Many umbrella designs include a top spring that holds the sliding ring upward when the canopy is open, a bottom spring that holds the sliding ring downward when the canopy is closed, and sometimes a central ball spring that extends the pole length in telescopic models. Umbrellas are typically available in either a relatively sturdy fixed-axle design or a compact, retractable design. When fully compressed, the compact retractable design is lightweight and relatively smaller than the fixed-axle design.

[0018] As used in this disclosure, the term "pole" is an axis extending between the bottom umbrella handle and the top umbrella canopy.

[0019] As used in this disclosure, the term "umbrella canopy" refers to the fabric portion of an umbrella that serves to trap rain, wind, sun, hail, snow, etc.

[0020] As used in this disclosure, the term "telescopic extension member" refers to concentric tubular portions designed to easily slide into each other.

[0021] As used in this disclosure, the term "relative" means an object located on the other side or other side of another object, such that the other object faces the object, especially objects of the same type.

[0022] As used in this disclosure, the term "substantially" means having the equivalent meaning of substantially, to a large extent, considerably, etc.

[0023] As used in this disclosure, the term "maximum" means the maximum quantity or value that is available or attainable.

[0024] As used in this disclosure, the term “minimum” refers to the minimum amount that is allocable, permissible, attainable, or possible.

[0025] As used in this disclosure, the term "height" is a measurement of vertical distance, and the term "length" is a measurement of horizontal distance.

[0026] As used in this disclosure, the term "foldable" refers to vertical adjustment of the height of a telescopic extension member.

[0027] As used in this disclosure, the term "bow-shaped" refers to a structure that is substantially curved.

[0028] Furthermore, all dimensions described herein are approximate and can vary by as much as ±10% to, in some cases, ±25%. In some cases, the term "about" is used to indicate this tolerance range. And when the term "about" is used before a stated range, it should be understood that the term applies to every stated value within that range. Generally, the technical and engineering procedures followed in the construction of these umbrellas minimize these tolerances as much as possible, or are industrially practical from the perspective of the specific values ​​referenced.

[0029] Now, with general reference to the accompanying drawings, in which the same numbers denote the same parts throughout all the views, preferred embodiments of the invention are described below. These drawings illustrate various preferred embodiments of the invention. However, it should be clearly understood that these drawings are provided merely as examples and should in no way be used to limit the scope of the invention.

[0030] In one embodiment, a double-handled umbrella can be adopted as follows: Figure 1 and 2 The overall design is shown in the diagram. The integral double-handled umbrella (1) includes an upper canopy (2) attached to the umbrella pole (4). Ideally, the canopy (2) is preferably made of a waterproof fabric to protect the user from harmful factors directly caused by the weather. This can advantageously be a microfiber fabric, such as nylon, then coated with a special waterproof finishing agent. In any case, those skilled in the art will know that any material can be used to manufacture the canopy (2) without subsequently compromising its waterproof capability.

[0031] The pole (4) is preferably made of a metallic material, such as, but not limited to, steel or aluminum. However, those skilled in the art will understand that any material that does not impair the basic function of the umbrella (1), such as wood, fiberglass, or other types of plastic, can be used in this respect. The pole (4) is typically a hollow tube and is operatively associated with and directly connected to a first grip handle (6) to keep the umbrella (1) upright when it is open for use. The first grip handle (6) also has a button (6a) therein for operating the umbrella (1). When the button (6a) is engaged, the canopy (2) unfolds. Thus, in this embodiment, the first grip handle (6) is a handle that is held and thus operated by the parent or the taller user of the umbrella. Extending vertically downward from the first grip handle (6) is a retractable extension member (8), wherein the extension member (8) is essentially foldable and advantageously provides adjustment at different heights according to the user's choice and specific selection, wherein a second telescopic portion of the extension member (8) passes through the first telescopic portion and the interior of the pole. For umbrellas, the poles and extensions are conveniently linear and rigid, rather than flexible, to give the device stability.

[0032] The canopy (1) is attached to a canopy support structure, which includes a canopy support frame attached to the upper part of the pole (4). A typical canopy support structure includes a conventional frame consisting of multiple ribs for receiving and attaching the canopy. The front end of the pole (4) includes a cap for closing the hollow pole (4). As described above, the pole (4) is operatively associated with and directly connected to a first grip handle (6) to keep the umbrella upright when it is open for use.

[0033] The first button (6a) releases the sliding ring upon engagement to unfold the canopy structure and canopy. The button shown is designed as a dual actuator, where pressing the button (6a) once causes the umbrella to open, while pressing the button (6a) a second time causes the canopy to close, simultaneously extending the pole (4). The user then closes the umbrella by pulling the sliding ring assembly downward toward the handle (6).

[0034] The telescopic extension member (8) is also operatively associated with and in direct contact with a second grip handle (10), which is adapted and intended to be held by children or shorter users. Thus, the extension member (8) is an extension of the pole (4) and passes through the first handle (6). Due to this feature, and because the extension member (8) is vertically foldable and adjustable, it provides the advantage of allowing the second handle (10) to be positioned adjacent to the first handle (6) when needed by an adult user. This, in turn, provides the effect of altering the height of the umbrella (1), making it easily configurable to present a minimum and maximum height entirely under the control of an adult or the first user. Without theoretical limitations, in other words, the height of the umbrella (1) can be easily adjusted via the telescopic extension member (8), making the lower second handle (10) extendable so that the umbrella (1) can be comfortably held by children or others of significantly lower height than the adult user. According to this embodiment, this is preferably achieved by having a child or shorter user hold the second handle (10) on one side and an adult or taller user hold the first handle (6) on the other side, thereby advantageously balancing them.

[0035] The second handle (10) also has a built-in button (10a) for operating the telescopic extension member. When the button (10a) is engaged, the extension member (8) descends to a lower position for a child to grip the handle. Thus, the button (10a) on the second handle serves as a release mechanism. Preferably, the button (10a) can be configured to release the second handle (10) from the first handle (6) to change the adjustable height of the second handle by having multiple locking positions, such that a different height can be selected each time the extension member (8) engages in the appropriate position, and ultimately release the second handle (10) during extension so that it can be retracted and accommodated within the pole, wherein the second handle (10) is positioned adjacent to or attached to the first handle (6). In many respects, the operation of the button (10a) is similar to that of the button (6a) commonly used on many umbrellas as a capture / release mechanism for unfolding and retracting the canopy (1).

[0036] Alternatively, a second button (10a) may be provided on the first grip handle (6) so that it can engage there to release the second grip handle (10) from its connection with the first grip handle (36) and extend the telescopic extension member (8) vertically downward away from the handle (6). Figure 1 The extension member (8) and the second grip handle (10) are shown in the extended position, which occurs after the second button is engaged and the handle 40 is released.

[0037] In any embodiment, the second grip handle (10) can be held at a desired distance from the first grip handle (6) by twisting and locking the handle (10) in the desired position below the handle (6). The extension member (8) is essentially foldable within the rod (4) and advantageously provides movement to allow the handle (10) to be positioned in different locations according to the user's choice and specific selection. When the handle (10) returns to its connection with the handle (6), the extension member (8) extends through the interior of the rod (4).

[0038] exist Figure 1 As can be seen from this, the extension member (8) is found to be in its maximum extendable state at the distance shown in (8a). On the other hand, Figure 2 The extension member (8) is shown to be fully positioned within the rod (4) such that the distance between the first upper user gripping handle (6) and the second lower handle (10) is now in contact with the second handle (10) connected to the first handle (6).

[0039] Figure 3 and 4 A preferred arrangement of handles (6), (10) is shown, wherein each handle has a knurled or roughened surface (6b), (10b) for easy gripping. Figure 3 A second handle (10) spaced apart from the first handle (6) is shown, wherein the extension member (8) is pulled out of the rod (4), while Figure 4 The handles (6) and (10) are shown locked together. In this preferred configuration, the pole (4) and the extension member (8) are constructed and sized such that when the umbrella is not in use, the extension member (8) is fully accommodated within the pole (4) and connected to the handle for compact storage. This ensures that the second handle does not detach from the first handle when the umbrella is moved to a storage location or when it is not in use and is carried.

[0040] Figure 5 A simple locking mechanism (11) for connecting the second handle (10) to the first handle (6) is shown. In this figure, the ends (6c), (10c) of the first and second handles are shown in cross-section to illustrate how they are attached together. The locking mechanism (11) is a snap-fit ​​joint that utilizes a ridge at the periphery of one component that locks into a groove on the second component. Although there are many methods for forming a locking connection, Figure 5A small internal ridge (12) is provided on the inner periphery of the lower end of the first handle member (6) near the end facing the second handle (10). The second handle (10) has a groove (14) on its outer periphery near the end that initially faces the first handle (6). When the second handle is retracted from its operating position to its non-operating or stored position, the two handles can be securely connected by simply pushing the second handle (10) into the first handle (6). Of course, this particular arrangement can be reversed, with the ridge on the outer periphery of the second handle (10) and the groove on the inner periphery of the first handle (6). Variations of this type of connection will be recognized by those skilled in the art, including other variations known in the art that are applicable to the present invention. Note that the connection force provided by this connection is very low, so that it can be easily overcome by the user pulling the second handle (6) away from the first handle or, more elegantly, by pressing a button or knob to release a compression spring that will unfold the second handle (6) by pushing the extension member (8) away from the first handle (10).

[0041] Figure 6 and 7 Two different types of deployment mechanisms are shown for releasing the second handle from the first handle. Figure 6 A simple button (15) is shown on the lower surface (10d) of the second handle, which can be pressed down to deploy a conventional spring, while Figure 7 An unfolding mechanism in the form of a knob (16) located on the lower surface (10d) of the second handle is shown, which can be simply rotated about 90° to release the spring. These are also conventional mechanisms applicable to the present invention.

[0042] When both the pole and the extension member are cylindrical, one is preferably configured to have a larger diameter than the other, allowing one to move within the other. Typically, the extension member will have a smaller diameter so that it can be telescopically fitted within the pole to retract when the umbrella is not deployed. Alternatively, the upper end of the extension member can be configured to be securely received within a user-grip handle. This can be achieved by threaded or press-fit connection or by joining these components together using a suitable adhesive. Thus, the extension member can be configured to have a telescopically adjustable length, which, when the umbrella is not deployed, fits within a second handle for compact storage when retracted.

[0043] Figure 8 , 9Figures 10 and 10 illustrate another embodiment of the invention, wherein the second handle (10) may be configured to have a smaller inner periphery than the first handle (6) on its outer periphery. While these handles are shown as cylindrical, it is conceivable that they may also be configured as elliptical or having polygonal peripheries, such as triangles, squares, rectangles, hexagons, octagons, etc., provided that the rod and handle are configured to fit one inside the other; the specific shape has no effect on the invention. Typically, each preferably has the same peripheral shape, although this is not a specific requirement of the structure of the invention.

[0044] exist Figure 8 , 9 In 10, the second handle (10) is shown having an outer periphery smaller than the inner periphery of the first handle (6), wherein the second handle (10) is shown to be nearly inserted into the first handle (6). Of course, as can be understood from the foregoing description, the second handle (10) may extend along the length of the extension member (8) to the desired extent in order to provide sufficient space for a child or a shorter user of the invention to grip the second handle (10).

[0045] Figure 9 The diagram shows the second handle (10) partially secured within the inner circumference of the first handle (6) in a non-operating position. This configuration can be achieved in various ways, such as by twisting the second handle into the first handle, or by using a similar... Figure 5 The latching mechanism shown engages. Of course, the inner circumference of the first handle (6) can be configured to have appropriate dimensions to facilitate this connection. In particular, a portion of the inner circumference will be smaller than a portion of the inner circumference at the end of the first handle (6).

[0046] Figure 10 Another embodiment is shown in which the second handle (10) is substantially entirely housed within the first handle (6). Alternatively, this can be achieved using a snap-lock or other similar mechanism.

[0047] exist Figure 8 , 9 In embodiment 10, the second handle (10) may be provided as follows: Figure 6 and 7 The button (15) or knob (16) shown is used to release the second handle from the first handle when the umbrella surface is about to open or open, so as to place the second handle in the operating position.

[0048] Since the embodiments described above are preferred embodiments, those skilled in the art can readily manufacture alternative constructions that provide the same functional advantages as the present invention. For example, the second handle (10) can also be made larger than the first handle (6) so that the first handle (6) can be partially or completely located within the second handle (10) in the non-operating position. This can be achieved by making the inner diameter of the opening of the handle (10) larger than the outer diameter of the first handle (6), which is essentially... Figure 8 , 9 The embodiment shown in Figure 10 is reversed, wherein the rod (4) is connected to the second handle (10), and the first handle (6) forms the end of the device.

[0049] Alternatively, the pole (4) can be configured to have sufficient length to position the second handle (10) at a desired height to accommodate the grip of children or short users, while the first handle (6) can be configured to be adjustable toward the umbrella surface away from the second handle (10) to provide a suitable grip position for adults or tall users. This can be achieved by making Figure 1 and 2 The handle (10) is fixed in place while the handle (6) can move a distance (8a) to achieve this.

[0050] Figure 1 and 2 Another feature of the invention is shown, which is a wrist strap or loop (13) respectively provided on the first handle (6) or the second handle (10). This strap (13) facilitates carrying when the umbrella (1) is not unfolded. Figure 1 and 2 In this embodiment, the strap (13) is shown attached to the first handle (6). However, when attached to the second handle (10), it can be used to wrap around a child's hand to keep the child close to the adult. In this embodiment, the strap can be adjustable to fit a child's hand. This can help prevent the child from running away from the adult or falling if they are walking together.

[0051] Advantageously, a locking mechanism is provided for holding the extension member in an operational position. This mechanism includes a torsion locking mechanism that engages by torsion of the extension member relative to the elongated member. These are typically cam-locking interlocking devices that provide a lockable position along the axis of the elongated member. They typically include a cam or protrusion constructed in the inner surface of the interlocking device, arranged to press against the axis when the interlocking device is locked and not press against the axis when the interlocking device is unlocked. In another example of the locking structure, the interlocking device may cooperate with a recess, weatherproof cutout, or slot constructed in the axis to provide multiple discrete lockable positions for a second gripping handle. A suitable locking mechanism is disclosed in U.S. Patent 4,856,929, although many variations and modifications of this type of mechanism are well known to those skilled in the art and are considered suitable for the present invention. For example, the structures disclosed in U.S. Patent 7,726,326 and U.S. Patent Application US2019 / 0274401 are also suitable for the present invention. These types of structures are typically included within the second grip handle, but may also be included within the first grip handle if desired, so that the height position of those handles can be selected based on the user's height and then locked in those positions. However, typically, the first grip handle will be fixed in place on the bar, so that only the second grip handle will require a twist-locking mechanism.

[0052] Figures 11 to 16 Another embodiment of a two-handled umbrella is depicted. This integral two-handled umbrella (20) includes an umbrella canopy (21) attached to the upper part of a pole (22). The pole (22) is operatively associated with and directly connected to a first grip handle (23) for keeping the umbrella upright when opened for use. The first grip handle (23) also has a button (24) built therein. In one variation, the umbrella canopy (21) unfolds when the button (24) is engaged. In another embodiment, engaging the button (24) releases and / or unfolds a second grip handle (25) from within the first grip handle (23). This arrangement utilizes a conventional spring to push or force the second handle (25) away from the first handle (23). The spring may be selected to provide easy movement of the second handle (25) via, for example... Figure 13 The force of the spring lock shown, in which it can be gripped by the user for further extension and locking, as described below. Or, as Figure 15 As shown, the spring force is sufficient to push the second handle apart from the first handle, and even move the second handle to the maximum distance between the two handles. Of course, the button (24) is not an essential feature of the invention, since the umbrella canopy and the second handle (25) can be pulled out manually.

[0053] like Figure 12-14As shown, the first grip handle (23) is large enough to accommodate the entire second grip handle (25) for storage when the umbrella is not in use and when only one user is operating it. The second grip handle is held within the first handle by a snap lock that prevents disconnection due to gravity, thus avoiding exposure of the second handle when not needed. In the non-operating position, as... Figure 12 As shown, only the lower end of the second grip handle (25) is visible, and it appears to be the end of the first grip handle (23). Figure 12-13 As best shown, the end of the second grip handle (25) includes a wrist strap (26) securely attached thereto. In one embodiment, the first grip handle does not include a button (24), and the second grip handle (25) is manually pulled out of the first grip handle by pulling the wrist strap (26). One user can grasp and simply pull the wrist strap (26) to pull it out of the first handle (23) by overcoming the attachment force of the snap-locking mechanism. This allows a second user to grip the second grip handle (25) and move it to a desired position below the first grip handle for easy positioning.

[0054] According to another embodiment, the first grip handle may include a button for deploying the umbrella canopy and a second button for releasing the second handle from a storage location within the first grip handle. Additionally, when the first grip handle is configured to be located within the second grip handle, a first button is provided for releasing the umbrella canopy, and a second button is provided for moving the second handle away from the first handle. In this embodiment, both buttons may be located on the second handle or at another location on the pole. Alternatively, one button may be located on the second handle for its release, while another button is used to open the umbrella canopy on the first handle. A button may also be provided that simultaneously deploys the umbrella canopy and releases the second handle from the first handle, although this limits umbrella use to situations where the second handle is available, requiring the additional step of moving the second handle to a non-operating position when the umbrella is operated by a single user.

[0055] Figure 16 The position of the second handle (25) is shown, approximately in the non-operating position. Figure 14 ) and fully extended position ( Figure 15The first grip handle is positioned between the two extremes, but the second handle can be placed anywhere between them, as it can be moved vertically downwards or upwards by the free-sliding extension member (27) to a selected position corresponding to a comfortable grip position for the second user's height. Once the selected position is determined, the second user can twist the second grip handle (e.g., by turning it clockwise or counterclockwise) to lock the second handle in the desired position. Although not mandatory, the first grip handle can also be provided with a twist-locking mechanism, allowing the first user to also adjust the height of the handle for a comfortable grip and to position the umbrella canopy at a desired height above the first user. This can be achieved by providing an additional inner tube with a twist-locking mechanism associated with the first handle. In this embodiment, the handle typically does not include a button, thus requiring manual operation to open the umbrella, pull out the second handle, and position both handles in the desired positions. When the umbrella is no longer needed, for example, when the rain stops or the user reaches the closed position, the second grip handle can be unlocked by rotating in the opposite direction (e.g., counterclockwise or clockwise, opposite to the locking rotation), so that the second grip handle can be moved and returned to the non-operating position, in which the second grip handle is fully locked in place within the first grip handle (18).

[0056] Figure 11-16 Typical different canopy structures that can be used with the double-handled umbrella of the present invention are shown, wherein the umbrella (20) is shown in a compact telescopic form. Alternatively, the double handles can be provided on an umbrella with a fixed shaft, which is relatively more robust and is generally used for larger umbrellas because the shaft can be properly opened to a relatively large canopy. However, the compact telescopic type is lightweight and its size is relatively smaller than that of the fixed shaft type when fully compressed. Such umbrellas (20) typically support smaller canopies, many of which provide sufficient coverage for two users. Another advantage of the compact form of the umbrella (20) is that it can be folded into a small size to accommodate carry-ons in a handbag or backpack.

[0057] Figure 17 This is a perspective view of a preferred double-handle and canopy support structure (31) for an umbrella. The structure includes a canopy support frame (32) attached to the upper part of the umbrella pole (34). The canopy support structure (32) includes a conventional frame consisting of multiple ribs (33) for receiving and attaching the canopy. The front end of the shaft (34) includes a cap (35) for closing the shaft (34). The shaft (34) is operatively associated with and directly connected to a first grip handle (36) to keep the umbrella upright when it is open for use.

[0058] The handle (36) has a first button (37) that can be engaged to release the sliding ring (45) to unfold the canopy structure (32) and the canopy. The button shown is designed as a dual actuator, where pressing the button (37) once causes the umbrella to open, and pressing the button (37) a second time causes the canopy to close while extending the shaft (34). The user then closes the umbrella by pulling the sliding ring assembly (50) downward toward the handle (36).

[0059] The handle (36) also has a second button (39) that can be engaged to release the second grip handle (40) from its connection with the first grip handle (36) and to extend the telescopic extension member (38) vertically downward away from the handle (36). The extension member (38) and the second grip handle (40) are shown in the extended position, which occurs after the second button (39) is engaged and the handle (40) is released. The second grip handle (40) can be held at a desired distance from the first grip handle (36) by twisting and locking the handle (40) under the handle (36) to the desired position. The extension member (38) is essentially foldable within the shaft (34) and advantageously provides movement to allow the handle (40) to be positioned in different locations according to the user's choice and specific selection. When the handle (40) returns to its connection with the handle (36), the extension member (38) passes through the interior of the shaft (34). A wrist strap (43) attached to the second grip handle (40) is also shown.

[0060] In a preferred embodiment, a second grip handle and an extension member are disposed within the umbrella, allowing one person to grip the first grip handle and another person to grip the second grip handle. In a preferred embodiment, the first user can be an adult, and the second user can be a child. Alternatively, the first user can be a taller person, and the second user can be a shorter person.

[0061] It is understood that the rod or shaft need not be a single-piece shaft design, as various aspects of the invention can be applied to telescopic shaft structures, such as shaft structures in which two or more shafts slide within each other but do not necessarily fold into one another to provide an overall reduction in shaft length. The invention then adds an extension member and a second handle. Suitable shafts of these types are disclosed in U.S. Patent 7,726,326, while improved shaft and rib assemblies for umbrellas are disclosed in U.S. Patent 9,609,926.

[0062] A preferred embodiment of the invention relates to an improvement on a conventional umbrella by incorporating a second handle typically used for gripping by a second user. This extension is adjustable to position the second grip handle at a different distance from the first grip handle, allowing a person shorter than the user to hold the umbrella by gripping the second grip handle. This is particularly useful when the first user is a parent and the second user is a child, as disclosed in U.S. Patent 10,143,276.

[0063] Furthermore, when two people use a single umbrella, it is beneficial to construct the canopy to provide coverage for both individuals. Typical canopies have a diameter of approximately 43 to 50 inches, but for two-handled umbrellas, a larger canopy diameter of approximately 50 to 57 inches can be used. Other sizes, up to 60 to 72 inches or larger, can be used if desired. Of course, those skilled in the art can choose any specific size desired for the canopy, and elongated and extended members will be appropriately configured to properly unfold and utilize the larger canopy.

[0064] The invention preferably includes a wrist strap or loop on either the first or second grip handle, as shown in U.S. Patent 10,143,276. Such a strap facilitates carrying when the umbrella is not in use. However, when attached to the second grip handle, it can also be used to wrap around a child's hand to keep the child close to an adult. Additionally, the strap can be adjustable to fit a child's hand. This helps prevent a child from running away from an adult or from falling when walking with an adult. In some embodiments, the wrist strap is also used to manually detach the second handle from the first handle to extend it to a desired position for the second user's grip. Simply grasp and pull the wrist strap to overcome the adhesion between the handles. In this embodiment, the wrist strap is typically a fabric, cord, rope, or metal loop securely attached to the bottom of the second handle.

[0065] This invention can also be used to improve many devices other than umbrellas. Suitable devices for improvement include any device incorporating a telescopic extension as an elongated member and currently includes a handle for operation. Such devices include ceiling light bulb changers, scrapers, painting tools using brushes or rollers, cleaning tools such as dusters or brushes, sink cleaning sticks, or even mechanical tools such as large wrenches and screwdrivers. Certain surgical tools manipulated by using a handle, such as retractors, forceps, and other devices, can also be improved by including this invention. Furthermore, the extension member and elongated member can be flexible rather than rigid, although a linear rigid construction is preferred for device stability. In some embodiments, a second grip handle can be held by the same user when greater force is required or when control of the elongated member and associated tools is needed. In other embodiments, one user can hold a first grip handle while another user can hold a second grip handle to help control the movement of the device or enhance its operation.

[0066] Unless otherwise specified, this invention belongs to the category of, and all technical and scientific terms used herein have the same meaning as understood in ordinary craftsmanship.

[0067] Unless otherwise specified, this invention belongs to [the category of inventions], and all technical and scientific terms used herein have the same meaning as understood in the ordinary art. As used herein, including in the appended claims, the singular forms “a,” “or,” and “described” include plural referents unless the context clearly indicates otherwise. Furthermore, as noted above, different materials or constructions similar to or functionally equivalent to those specifically described herein may be used in the practice of this invention, wherein the exemplary materials described herein are for illustrative purposes only.

[0068] The terms “comprising,” “containing,” “including,” “having,” and their variations mean “including, but not limited to.” Unless otherwise expressly stated, the terms and phrases used in this application and their variations should be interpreted as open-ended rather than restrictive. As an example of the foregoing, the term “comprising” should be understood to mean “including, but not limited to,” etc. The term “example” is used to provide exemplary instances of the items under discussion, not an exhaustive or restrictive list thereof. Adjectives such as “conventional,” “traditional,” “known,” and similar terms should not be interpreted as limiting the described items to a given time period or to items available at a given time. Rather, these terms should be understood to include conventional, traditional, normal, or standard techniques that may be available, now known, or available at any time in the future. Similarly, a group of items connected with the conjunction “and” should not be interpreted as requiring each of these items to be present in the group, but should be interpreted as “and / or,” unless otherwise expressly stated. Likewise, unless otherwise expressly stated, a group of items connected with the conjunction “or” should not be interpreted as requiring mutual exclusion within the group, but should also be interpreted as “and / or.”

[0069] It should also be understood that the various parts of the double-handled umbrella in the accompanying drawings are not necessarily drawn to the correct scale. Therefore, since the accompanying drawings are for illustrative purposes only, the comparable dimensions of the various parts of the double-handled umbrella should not be limited to or interpreted as they appear in the drawings.

[0070] Those skilled in the art will readily understand that this invention has broad applicability and application. For example, including a second handle on a device other than an umbrella allows for better control and operation of the device according to the specific features disclosed in the preferred embodiment of the umbrella. Although various embodiments have been illustrated and described herein with reference to preferred embodiments and specific examples, those skilled in the art will understand that other embodiments and examples can perform similar functions and / or achieve similar results. Therefore, it should be understood that the various features and aspects disclosed in the disclosed embodiments can be combined or substituted with each other to form variations of the disclosed invention. Many different embodiments, such as variations, modifications, and equivalent arrangements, will be implicitly and explicitly disclosed through the embodiments described herein and therefore fall within the scope and spirit of the invention. Thus, the scope of embodiments of the invention should be determined by the appended claims and their legal equivalents, rather than by the specific examples, preferred embodiments, or drawings.

Claims

1. A device comprising an elongated member and an associated first gripping handle for holding or manipulating the device, the improvement comprising a second gripping handle and an extension member operatively associated with the elongated member, wherein the extension member is capable of adjustingly and permanently positioning the second gripping handle in any of a plurality of positions spaced apart from the first gripping handle, including a non-operating position and a plurality of operating positions, wherein, When the second grip handle is fixed in the operating position, the first user can grip the first grip handle, and the second user can grip the second grip handle; and wherein, when the second grip handle is in the non-operating position, the second grip handle is attached to the first grip handle, at least partially or completely located within the first grip handle, or wherein the first grip handle is at least partially or completely accommodated.

2. The apparatus according to claim 1, wherein, The first grip handle is fixed to the elongated member, and the second grip handle is fixed to the extension member.

3. The apparatus according to claim 2, wherein, The second grip handle, in the non-operating position, is attached to the first grip handle.

4. The apparatus according to claim 3, wherein, One of the first grip handle or the second grip handle includes a snap-locking recess, and the other of the first grip handle or the second grip handle includes a protrusion received in the snap-locking recess to attach the first grip handle or the second grip handle together in the non-operating position.

5. The device according to any one of the preceding claims further includes a release member for releasing the second handle to unfold when the second gripping handle is to be moved to the operating position.

6. The apparatus according to claim 5, wherein, The release member is operatively associated with a spring that provides sufficient force when the release member is engaged to disengage the protrusion from the latch locking groove.

7. The apparatus according to any one of the preceding claims, wherein, The second grip handle, in the non-operating position, is at least partially located within the first grip handle.

8. The apparatus according to any one of the preceding claims, wherein, The second grip handle, in the non-operating position, is completely located within the first grip handle.

9. The apparatus according to any one of the preceding claims, wherein, The first grip handle in the non-operating position is at least partially located within the second grip handle.

10. The apparatus according to any one of the preceding claims, wherein, The first grip handle in the non-operating position is completely located within the second grip handle.

11. The apparatus according to any one of the preceding claims, wherein, The slender member is a rod, tube, pipe, sleeve, or hollow rod member.

12. The apparatus according to claim 11, wherein, The extension member is a rod, tube, pipe, sleeve, bar, or solid rod member configured to move relative to the elongated member.

13. The apparatus according to claim 11 or 12, wherein, The elongated member, the extended member, or each of them has a telescopic structure, and one member is housed within the other to facilitate movement between them.

14. The apparatus according to any one of the preceding claims further includes a distance defining member operatively associated with the elongated member or the extension member or both, to prevent the extension member from separating from the elongated member.

15. The apparatus according to any one of the preceding claims further includes a biasing member that provides a force to push the extension member to an operating position.

16. The apparatus of claim 15, further comprising a locking member for locking the biasing member in a non-operating position, and an engaging member for releasing the locking member when the second gripping handle is to be moved to an operating position.

17. The apparatus according to any one of the preceding claims further includes a locking mechanism for fixing the second gripping handle and the extension member in an operating position.

18. The apparatus according to claim 17, wherein, The locking mechanism for securing the extension member and the second gripping handle in an operating position includes a torsion locking mechanism that engages by torsion of the extension member relative to the elongated member.

19. The apparatus according to claim 18, wherein, The torsion locking mechanism can be engaged by twisting the second grip handle at a position associated with a grip position that is appropriately height-adjustable for the second user.

20. The apparatus according to claim 17, 18 or 19, wherein, The locking mechanism includes a cam-locking interlock device that provides a lockable position along the axis of the elongated member. The cam-locking device includes a cam or protrusion constructed in the inner surface of the interlock device, the cam or protrusion being arranged to press against the extension member when the interlock device is in a locked state and not press against the extension member when the interlock device is in an unlocked state.

21. The apparatus according to any one of the preceding claims, wherein, The first grip handle includes a substantially cylindrical portion for gripping by the hand of the first user, and the second grip handle includes a substantially cylindrical portion for gripping by the hand of the second user.

22. The apparatus according to any one of the preceding claims, wherein, The elongated component includes a telescopic extension.

23. The apparatus according to any one of the preceding claims, wherein, The device is an umbrella, a ceiling light bulb replacement device, a rubber scraper, a painting tool, a cleaning tool, a wrench, or a surgical instrument.

24. An umbrella comprising an umbrella canopy, an elongated member, and an associated first gripping handle for holding or manipulating the umbrella, and a second gripping handle and an extension member operatively associated with the elongated member, the extension member being capable of adjustablely and fixedly positioning the second gripping handle in any of a plurality of positions spaced apart from the first gripping handle, including a non-operating position and a plurality of operating positions, wherein, When the second grip handle is fixed in the operating position, the first user can grip the first grip handle, and the second user can grip the second grip handle; and wherein, when the second grip handle is in the non-operating position, the second grip handle is attached to the first grip handle, at least partially or completely located within the first grip handle, or wherein the first grip handle is at least partially or completely accommodated.

25. The umbrella according to claim 24, wherein, The first grip handle and the second grip handle, in the non-operating position, are attached to each other.

26. The umbrella according to claim 24 or 25, wherein, In the non-operating position, one of the first grip handle and the second grip handle is partially or completely retracted into the other handle.

27. The umbrella according to claim 24, 25 or 26, wherein, The elongated member includes a telescopic extension, and the umbrella also includes a locking mechanism for fixing one of the extension or the handle in an operating position.

28. The umbrella according to claim 27, wherein, The locking mechanism includes a torsion locking mechanism that engages by twisting the extension member relative to the elongated member or handle, wherein the torsion locking mechanism engages by twisting the second grip handle at a position associated with a grip position suitable for height adjustment for the second user.

29. The umbrella according to any one of the preceding claims, wherein, The umbrella canopy can be unfolded from the end of the elongated member opposite to the first grip handle.

30. The umbrella according to claim 29, wherein, The umbrella canopy and the second handle can be deployed when engaged with a deployment member associated with either the first or the second handle.

31. The umbrella according to claim 30, wherein, The unfolding component is a button or knob located on the side or bottom surface of the second handle.

32. The umbrella according to claim 29, 30 or 31, wherein, The umbrella canopy is large enough to accommodate two users underneath.

33. The umbrella according to any one of claims 24 to 32, wherein, The umbrella is either a fixed-axis type or a compact telescopic type. When the compact telescopic type is fully compressed, it is lighter and smaller in size than the fixed-axis type.

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