Coupling systems, vehicles equipped with such devices, assembly kits, and corresponding methods of assembly, operation and use

Abstract

The coupling system comprises three axes to articulate the trailer in all directions when it is coupled to a towing vehicle (e.g. a tractor). The axis ensuring pitch is either centered with the other two axes or offset towards the tractor, making it possible to limit the forces transmitted to the tractor's coupling bar in the case of high vertical loads. The present system with three offset axes therefore offers the principles and advantages of the operation of a universal joint, but by offsetting the pitch axis forward it is particularly advantageously and additionally and innovatively possible to better support the vertical loads imposed on a particular towed machine on the tractor's coupling bar.

Description

[Technical field]

[0001] The present invention relates to the field of coupling devices as used in the field of towing and / or agriculture (e.g., coupling between a tractor and a towed vehicle, etc.) and / or any other type of related application. More particularly, the present invention relates to a novel coupling system for coupling a towing vehicle (e.g., a tractor, etc.) to a towed vehicle (e.g., a trailer, a spreader, etc.), as well as to vehicles (e.g., towing vehicles and / or towed vehicles) and / or arrangements of such vehicles with such equipment, as well as kits for assembling the same, and corresponding methods of assembly, operation and / or use. [Background technology]

[0002] It is known that the connection between an agricultural tractor and a trailer machine is made on a hitch bar on the tractor. The trailer machine must be able to pivot in all directions to compensate for pitch, yaw and roll.

[0003] Conventional linkages generally consist of a double linkage bar on the tractor, a single bar on the machine, and a rod connecting the two parts. In such linkage models, pitch and roll are guaranteed by providing sufficient play between the rod and the simple linkage bar.

[0004] The problem with these types of connections is that the larger the size of the connection, the larger the play between the parts. This larger play causes greater shocks during braking and acceleration, more specifically for the largest connections with higher normal loads and higher total load mass. Tractor hitch bar sizes are defined in ANSI / ASABE AD6489-3. Previously there were three categories, but tractor manufacturers have produced more and more powerful tractors and now hitch bars are available up to size or category 5. This increased strength has caused the industry to evolve hitch modes to reduce the excess play caused by oversizing the components.

[0005] Ball-type solutions are also known in the art. In fact, ball-type connections are frequently used to minimize play. However, this solution is better adapted to smaller connections with lower loads. Category 4 and 5 tractors allow higher loads than the balls available on the market can withstand. When using ball-type connections under these conditions, wear of the components becomes an issue.

[0006] Also known in the art are problems associated with the two types of couplings mentioned above (i.e., the conventional solution and the ball-type solution). In fact, these two types of couplings may not be compatible with certain types of servo steering systems of the towed machine. These servo steering systems consist of mechanisms, mounted in various ways, that mechanically transmit the movements of the tractor relative to the towed machine to the hydraulic servo steering system to induce turning at the steering axle of the towed machine so that the towed machine follows the tractor. These types of couplings usually leave little space to add these mechanisms. Very often there is insufficient space between the top of the components of the coupling and the bottom of the power transmission shaft.

[0007] Universal joint type solutions are also known in the art. In fact, a universal joint type connection consists of three axes. Each axis ensures a movement in one direction, namely the pitch, yaw and roll movements. The combination of these three axes allows a complete freedom of movement in all directions.

[0008] This alternative requires removing the upper part of the tractor's hitch bar, so that the double part is then on the towed machine, which increases the free space between the hitch and the power transmission shaft, making it possible to better incorporate mechanical elements that can be used to transmit movement to the servo steering system.

[0009] This type of coupling is again suitable for smaller loads, since the axis that guarantees the pitch is offset backwards. This generates considerable forces on the machine parts when the vertical load is high. The coupling bar on the tractor side is subjected to higher forces than the design envisaged. This solution has been commonly used for many years for light trailers or agricultural equipment with minimal vertical loads, but should not be used for trailers with heavy loads, such as fertiliser spreaders.

[0010] It would therefore be highly advantageous to find new techniques / approaches and / or coupling systems / equipment for, for example, connecting a towing vehicle (e.g., tractor, etc.) to a trailer vehicle (e.g., trailer, spreader, etc.) and which could overcome and / or reduce / minimize some of the inconveniences and drawbacks discussed above, and / or at least do so in a faster, simpler, more accurate, more efficient, more economical, more reliable, more adjustable, more versatile, more adaptable, more durable, more versatile, more desirable, and / or improved manner than is currently possible. Summary of the Invention [Problem to be solved by the invention]

[0011] It is therefore an object of the present invention to provide a coupling system (and / or a vehicle equipped with such equipment, etc.) which, by its design and its components, meets some of the aforementioned needs and is therefore an improvement over other coupling practices, systems and / or methods known in the prior art. [Means for solving the problem]

[0012] As will be better understood hereinafter, the above-mentioned objects are achieved by a coupling system (and / or a vehicle equipped with such equipment, etc.) as briefly described herein and illustrated in the accompanying drawings.

[0013] More particularly, according to one possible embodiment, the invention relates in particular to a coupling system for coupling a towing vehicle to a towed vehicle to be towed by said towing vehicle, the towing vehicle comprising: a primary connection assembly defining a longitudinal cavity positioned, shaped and dimensioned to receive a portion of a hitch bar of a tow vehicle; a pitch adjustment assembly operably attached to the main connection assembly and angularly adjustable relative to the main connection assembly by pivoting about a first axis of rotation (A); a yaw adjustment assembly operably attached to the main connection assembly and angularly adjustable relative to the main connection assembly by pivoting about a second axis of rotation (B); a roll adjustment assembly operably attached to the pitch adjustment assembly and angularly adjustable relative to the pitch adjustment assembly by pivoting about a third axis of rotation (C); Equipped with The first rotating shaft (A) is arranged upstream of the second rotating shaft (B), i.e. on the towing vehicle side.

[0014] According to another aspect of the invention, the invention also relates to corresponding vehicles (eg towing vehicle and / or towed vehicle) equipped with the above mentioned systems and / or equipment.

[0015] According to another aspect of the invention, the invention also relates to the arrangement of such corresponding vehicles (eg towing vehicle and / or towed vehicle) equipped with the above-mentioned systems and / or equipment.

[0016] According to another aspect of the invention, the invention also relates to kits having corresponding components for assembling the above mentioned systems, devices, vehicles and / or arrangements.

[0017] According to another aspect of the invention, the invention also relates to a method of assembling components of the above-mentioned systems, equipment, vehicles and / or arrangements.

[0018] According to another aspect of the invention, the invention also relates to a method of operating the above-mentioned systems, equipment, vehicles and / or arrangements, and / or particular components thereof.

[0019] According to another aspect of the invention, the invention also relates to methods of using the above-mentioned systems, equipment, vehicles and / or arrangements, and / or certain components thereof.

[0020] According to another aspect of the invention, the invention also relates to a set of components for replacement in the above mentioned systems, equipment, vehicles and / or arrangements.

[0021] According to another aspect of the invention, the invention also relates to a method of manufacturing one or other of the components of the above-mentioned systems, equipment, vehicles and / or arrangements.

[0022] According to another aspect of the invention, the invention also relates to soil (and / or recovery thereof etc.) that has been treated by the above-mentioned system, apparatus, vehicle, arrangement, kit and / or method.

[0023] According to another aspect of the invention, the invention also relates to a method of doing business with the above-mentioned systems, apparatus, vehicles, arrangements, kits, methods, sets and / or articles of manufacture.

[0024] The objects, advantages and other features of the present invention will become more apparent upon reading the non-restrictive description of preferred embodiments of the invention given by way of example only, set forth hereinafter and illustrated in the accompanying drawings, in which:

[0025] Indeed, the accompanying drawings illustrate various possible components, features, variations and / or combinations of various aspects of connection systems in accordance with various possible non-limiting embodiments of the present invention. [Brief description of the drawings]

[0026] [Figure 1] 1 is a schematic diagram of a conventional coupling device used to connect a towing vehicle (e.g., a tractor) to a towed vehicle (e.g., a trailer) in accordance with the prior art. [Diagram 2] FIG. 2 is an enlarged view of a conventional coupling device as shown in FIG. [Diagram 3] FIG. 1 is an enlarged view of a conventional ball-type coupling device according to the prior art. [Figure 4] 1 is a photograph that illustrates diagrammatically the problems inherent in conventional universal joint type coupling designs according to the prior art; [Diagram 5] FIG. 1 is a top perspective view of a coupling system comprising a connection device having corresponding male and female components according to one possible embodiment of the present invention, the coupling system being shown in cooperation with a portion of a pivot shaft (representing the towed vehicle) and a portion of a right hitch bar (representing the towing vehicle) shown in exploded form. [Figure 6] FIG. 6 is another top perspective view of what is shown in FIG. 5, where the pivot shaft (representing the towing vehicle) is shown connecting to a hitch system according to one possible embodiment of the present invention. [Figure 7] FIG. 7 is a vertical cross-sectional view of what is shown in FIG. [Figure 8] FIG. 8 is another cross-sectional view of what is shown in FIG. 7. [Figure 9] FIG. 9 is another cross-sectional view of that shown in FIG. 8, where the linkage system is shown as an example of a "pitch" (e.g., a dip and a depression in the road surface while the vehicle is moving) in accordance with one possible embodiment of the present invention. [Figure 10] FIG. 7 is another top perspective view of what is shown in FIG. 6, where the coupling system is shown as an example in a "neutral" position, according to one possible embodiment of the present invention. [Figure 11] FIG. 11 is another top perspective view of what is shown in FIG. 10, where the linkage system is now shown as an example of "yaw" in accordance with one possible embodiment of the present invention. [Figure 12] FIG. 11 is an enlarged view of what is shown in FIG. 10, with the coupling system again shown in an example of a "neutral" position, according to one possible embodiment of the present invention. [Figure 13]FIG. 11 is another top perspective view of what is shown in FIG. 10, with the coupling system shown as an example of a "pitch" (e.g., upwards) according to one possible embodiment of the present invention. [Figure 14] FIG. 11 is another top perspective view of what is shown in FIG. 10, with the coupling system shown as an example of "pitch" (e.g., downwards) according to one possible embodiment of the present invention. [Figure 15] FIG. 1 is a top perspective view of a coupling system with a connection device having first and second clamping components according to one possible embodiment of the present invention, the coupling system being shown in cooperation with a portion of a pivot shaft (representing the towed vehicle) and a portion of a curved coupling bar (representing the towing vehicle) shown in exploded form. [Figure 16] FIG. 16 is an enlarged view of a portion of what is shown in FIG. [Figure 17] FIG. 16 is another top perspective view of what is shown in FIG. 15. [Figure 18] FIG. 18 is a bottom perspective view of what is shown in FIG. 17. [Figure 19] FIG. 18 is a right side view of what is shown in FIG. 17. [Figure 20] FIG. 18 is a left side view of what is shown in FIG. 17. [Figure 21] FIG. 18 is a top view of what is shown in FIG. 17. [Figure 23] FIG. 18 is a rear view of what is shown in FIG. [Figure 24] FIG. 18 is a front view of what is shown in FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0027] In the following description, like elements are provided with the same reference numerals. The embodiments (geometry, dimensions, etc.) shown in the drawings and features described in this application are only preferred and are given by way of example only.

[0028] Furthermore, although the present invention is primarily designed as a coupling system for connecting a towing vehicle (e.g., tractor, etc.) to a trailer vehicle (e.g., trailer, spreader, etc.), for example in an agricultural context, the present invention can be used for any other type of joint and / or any other type of useful application and / or purpose, as will be apparent to one skilled in the art. Thus, the terms "coupling", "vehicle", "towing", "towed", "agricultural", "tractor", "trailer", "spreader", etc., used herein, and / or any other references and / or other terms equivalent or similar to these terms, should not be considered as limiting the scope of the present invention, but rather include any other purpose / alternative and / or any other application for which the present invention may be used and useful, as will be apparent to one skilled in the art.

[0029] Moreover, although the preferred embodiment of the illustrated system includes several components, not all of which are essential to the present invention, and therefore should not be interpreted in a limiting sense, i.e., should not be considered to limit the scope of the present invention. It should be understood that other suitable components and geometries, and / or other possible cooperations between them, can be used in the system according to the present invention, as will be apparent to those skilled in the art, without departing from the scope of the present invention, as described below.

[0030] Furthermore, expressions such as "system", "equipment", "couple", "connect", "articulate", "connect", "connector", "kit", "device", "assembly", "mechanism", "product", "apparatus", "operator", "controller", and any other equivalent expressions and / or combinations thereof, as will be apparent to those skilled in the art, may be used interchangeably in the context of this specification. This also applies to other expressions that are mutually equivalent, as will be apparent to those skilled in the art, such as a) "couple", "connect", "articulate", "tow", "couple", "ancrer", and the like, b) "vehicle", "tractor", "trailer", "spreader", and the like, c) "controller", "operator", "robot", "command", "computer", "circuit", "hardware", "software", "logiciel", "mechanical, electronic, electronic, and / or computer components", and the like, as well as any other mutually equivalent expressions related to the above expressions and / or any other structural and / or functional aspects.

[0031] Furthermore, in the context of this specification, all elongated objects are considered to have implicitly a "longitudinal axis" and / or "centerline", such as, for example, the longitudinal axis of a rod or the centerline of a conduit, and expressions such as "connected" and "connectable" or "pivot" and "pivotable" are to be considered interchangeable and equivalent to each other, in that the invention also relates to kits having corresponding components for assembling resulting devices and / or systems fully assembled and operable for carrying out the method and / or obtaining any resulting and / or derived products.

[0032] Additionally, certain components of the systems and / or method steps (e.g., linkages, etc.) described herein may be modified, simplified, omitted, and / or replaced without departing from the scope of the invention, depending upon the particular use for which the system is designed and / or intended, and depending upon the desired results as will be apparent to those of skill in the art, as briefly described herein.

[0033] (Consideration of the new approach proposed by the present invention) In general, the invention consists of a coupling mechanism with three axes for articulating the trailer in any direction when it is coupled to a tractor, as shown in the accompanying drawings, where the axis that ensures pitch is either centered with the other two axes or offset towards the tractor to limit the forces transmitted to the tractor coupling bar in case of high vertical loads.

[0034] Thus, the three-axis offset hitch uses the principle of universal joint operation by offsetting the pitch axis forward, which is particularly advantageous as it allows better support of the vertical loads imposed by a particular towed machine on the hitch of the tractor.

[0035] Reading the following paragraphs in conjunction with the drawings will make it possible to better understand how the presented advantages relate to the technical novelty of the invention.

[0036] (List of reference numbers and / or corresponding preferred components shown in the accompanying drawings and / or possible for the present system) 1. Linked System 3. Main Connection Assembly (of a Coupling System) 3a. Longitudinal Cavity (of the Main Connection Assembly) 3b. Main Body (of the Main Connection Assembly) 3c. Supports (for main connection assemblies) 3d. Height Adjustment Subassembly (Main Connection Assembly) 3e. Effective height (e.g., in a longitudinal cavity) 3g. Hole (e.g., for receiving a connecting rod, e.g., in the top of the main connection assembly) 3f. Height adjustment component (e.g., for receiving a portion of a tie bar of a main connection assembly) 5. Pitch Adjustment Assembly (for Interlocking Systems) 5a. Main body (of pitch adjustment assembly) 5b. Arm (of pitch adjustment assembly) 7. Yaw Adjustment Assembly (Linkage System) 9. Roll Adjustment Assembly (Interlocking System) 11. Fasteners (e.g. bolts, screws, rivets, etc.) 13. Holes (e.g. in main connection assemblies) 15. Fastening device (for fasteners, e.g., threads, nuts, etc.) 17. Connecting rod (of a coupling system) 17a. Longitudinal axis (of the connecting rod) 17b. Main body (of connecting rod) 17c. Rim (of connecting rod) 17d. (Connecting rod) handle 19. Pin (of the coupling system) 19a. Longitudinal axis (of the pin) 21. Shafts (e.g., pivot shafts of roll adjustment assemblies) 21a. Longitudinal axis (e.g., of a pivot shaft) 23. Servo steering accessories 23i. (Servo Steering Accessories) Section 23o. Passage (for servo steering accessories, e.g., connecting rod) 25. Connection Device 25a. First component (e.g., male component and / or first fastening component of a connection device) 25b. Second component (e.g., female component and / or second fastening component of a connection device) 27. Threaded components (for fastening components) 29. Groove (e.g., in a fastening component) 31. Pivot axis (e.g., for a given component of a connecting device) 101. Vehicles 101a. Towing vehicles (e.g., tractors, etc.) 101b. Towed vehicles (e.g., trailers, spreaders, etc.) 111a. Tie bars (e.g., on a towing vehicle) 111o. (e.g., a hole in a connecting bar) A. The first rotation axis (e.g. for pitch adjustment) B. A second rotation axis (e.g., for yaw adjustment) C. A third axis of rotation (e.g. for roll adjustment)

[0037] The present connection system (1) (and its various inventive aspects) may be embodied in various forms and / or expressions, including one and / or more of the following components and features (and / or different combinations and / or permutations thereof), which are provided merely as preferred and / or optional embodiments.

[0038] Item i). A coupling system (1) for coupling a towing vehicle (101a) to a towed vehicle (101b) to be towed by the towing vehicle (101a), comprising: a main connection assembly (3) defining a longitudinal cavity (3a) positioned, shaped and dimensioned to receive a portion of a tie bar (111a) of the towing vehicle (101a); a pitch adjustment assembly (5) operably attached to the main connection assembly (3) and angularly adjustable relative to the main connection assembly (3) by pivoting about a first rotation axis (A); a yaw adjustment assembly (7) operably attached to the main connection assembly (3) and angularly adjustable relative to the main connection assembly (3) by pivoting about a second rotation axis (B); a roll adjustment assembly (9) operably attached to the pitch adjustment assembly (5) and angularly adjustable relative to the pitch adjustment assembly (5) by pivoting about a third rotation axis (C); Equipped with The first rotation axis (A) is arranged upstream of the second rotation axis (B), i.e. on the side of the towing vehicle (101a), coupling system (1).

[0039] Item ii). A coupling system (1) according to any of the combinations of the above-mentioned items, wherein the main connection assembly (3) is substantially "C" shaped and includes a main body (3b) defining the longitudinal cavity (3a) positioned, shaped and dimensioned to receive the portion of the tie bar (111a) of the towing vehicle (101a).

[0040] Item iii). A coupling system (1) according to any of the combinations of the above-mentioned items, wherein the main connection assembly (3) includes first and second supports (3c) operably connectable to each other, each support (3c) having a substantially "C" shaped main body, the supports (3c) being capable of being assembled within the main connection assembly (3) to define the longitudinal cavity (3a) positioned, shaped and dimensioned to receive the portion of the tie bar (111a) of the towing vehicle (101a).

[0041] Item iv). A connection system (1) according to any of the combinations of the above-mentioned items, wherein the first and second supports (3c) of the main connection assembly (3) are supports that are fixedly attachable to the main connection assembly (3).

[0042] Item v). A coupling system (1) according to any of the combinations of the above-mentioned items, wherein the main connection assembly (3) comprises a height adjustment subassembly (3d) which is capable of selectively and adjustably adjusting an effective height (3e) within the longitudinal cavity (3a) of the main connection assembly (3) to, in particular, minimize a free space (e.g., vertical play) between the longitudinal cavity (3a) and the coupling bar (111a) of the towing vehicle (101a).

[0043] Item vi). A connection system (1) according to any of the combinations of the above-mentioned items, wherein the height adjustment subassembly (3d) includes at least one height adjustment component (3f) (e.g., a plate, etc.), which is operably and selectively mountable (e.g., insertable) on the main body of the main connection assembly (3) and within the longitudinal cavity (3a) thereof so as to selectively and adjustably adjust the vertical play of the longitudinal cavity (3a).

[0044] Item vii). A connection system (1) according to any of the combinations of the above-mentioned items, wherein the at least one height adjustment component (3f) is operably and selectively attachable (e.g., insertable) on the main body of the first and second supports (3c) of the main connection assembly (3) via at least one fastener (11) (e.g., a screw, rivet, nut, etc.).

[0045] Item viii). A connection system (1) according to any of the combinations of the above-mentioned items, wherein the at least one height adjustment component (3f) (e.g., a plate, etc.) is operably and selectively attachable (e.g., insertable, etc.) on the main body of the first and second supports (3c) of the main connection assembly (3) via at least one pair of fasteners (11) (e.g., bolts, screws, rivets, etc.).

[0046] Item ix). A connection system (1) according to any of the combinations of the above-mentioned items, wherein each fastener (11) of the height adjustment subassembly (3d) is insertable into a corresponding hole (13) of the main connection assembly (3).

[0047] Item x). A connection system (1) according to any combination of the above items, wherein each corresponding hole (13) of the main connection assembly (3) is oblong to allow height adjustment complementing the vertical play of the longitudinal cavity (3a).

[0048] Item xi). A connection system (1) according to any combination of the above-mentioned items, wherein each fastener (11) is provided with a tightening device (15) (e.g., a screw thread, a nut, etc.) for tightening said fastener at a predetermined position and height within its corresponding hole.

[0049] Item xii). The connection system (1) according to any of the combinations of the above-mentioned items, wherein the pitch adjustment assembly (5) includes a main body (5a) operably attached to the main body of the main connection assembly (3) and capable of angular adjustment relative to the main connection assembly (3) by pivoting about the first rotation axis (A).

[0050] Item xiii). A coupling system (1) according to any of the combinations of the above-mentioned items, wherein the pitch adjustment assembly (5) includes at least first and second arms (5b) operably connectable to each other, each arm (5b) having a substantially "L" shaped main body, each arm (5b) having a front portion pivotable about the first rotation axis (A).

[0051] Item xiv). The coupling system (1) according to any of the combinations of the above items, wherein the first and second arms (5b) of the pitch adjustment assembly (5) are arms (5b) removably and pivotally attachable to the main connection assembly (3).

[0052] Item xv). The front portion of each arm (5b) of the pitch adjustment assembly (5) is further connectable and pivotable to a corresponding fixed support (main body (3b) and / or other) of the main connection assembly (3), a connection system (1) according to any combination of the above-mentioned items.

[0053] Item xvi). A connection system (1) by any combination of the above-mentioned items, wherein the front portion of each arm (5b) of the pitch adjustment assembly (5) is operably and selectively attachable to a corresponding fixed support (main body (3b) and / or others) of the main connection assembly (3) via at least one fastener (11) (e.g., screw, rivet, nut, etc.).

[0054] Item xvii). A coupling system (1) according to any of the combinations of the above-mentioned items, wherein the first and second arms (5b) of the pitch adjustment assembly (5) define a space therebetween that allows for insertion of a connecting rod (17) through a corresponding hole (3g) in a corresponding upper part of the main connection assembly (3).

[0055] Item xviii). The connecting rod (17) is further shaped and dimensioned so as to be insertable into a corresponding hole (111o) of the connecting bar (111a) of the towing vehicle (101a).

[0056] Item xix). A coupling system (1) according to any of the combinations of the above items, wherein the connecting rod (17) includes an upper rim (17c) positioned, shaped and dimensioned such that the connecting rod abuts a circumferential boundary of the corresponding hole (111o) of the tie bar (111a) of the towing vehicle (101a), thereby preventing the connecting rod from slipping out of the corresponding hole in the tie bar (111a) of the towing vehicle (101a).

[0057] Item xx). A connection system (1) according to any of the combinations of the above items, wherein the upper rim (17c) of the connecting rod is further positioned, shaped and dimensioned to abut against a circumferential boundary of the corresponding hole (3g) of the corresponding upper part of the main connection assembly (3), thereby preventing the connecting rod (17) from slipping out of the corresponding hole (3g) of the corresponding upper part of the main connection assembly (3).

[0058] Item xxi). The coupling system (1) according to any of the combinations of the items described above, wherein the connecting rod (17) further includes an upper handle (17d) positioned, shaped and dimensioned to allow a user to manually pull the connecting rod (17) so that the connecting rod (17) can be removed from the connection system (1).

[0059] Item xxii). The connection system (1) according to any of the combinations of the above items, wherein said connecting rod (17) comprises a substantially cylindrical main body (17b).

[0060] Item xxiii). A coupling system (1) according to any of the combinations of the above items, wherein the longitudinal axis (17a) of said connecting rod (17) provides said second axis of rotation (B) to said coupling system (1).

[0061] Item xxiv). The connection system (1) according to any of the combinations of the above-mentioned items, wherein the connection system (1) includes a pin (19) extending through the main body (3b) of the main connection assembly (3), the pin (19) having a longitudinal axis (19a) that provides the first axis of rotation (A) to the connection system (1).

[0062] Item xxv). A connection system (1) according to any of the combinations of the above-mentioned items, wherein said pin (19) extends transversely to said connection system (1).

[0063] Item xxvi). A connection system (1) according to any of the combinations of the above-mentioned items, wherein said connecting rod (17) extends perpendicular to said connection system (1).

[0064] Item xxvii). A coupling system (1) according to any of the combinations of the above-mentioned items, wherein said pin (19) is arranged upstream of said connecting rod (17), i.e. on the side of said towing vehicle (101a).

[0065] Item xxviii). A coupling system (1) according to any of the combinations of the above-mentioned items, wherein the pin (19) is arranged to be positioned above the coupling bar (111a) of the towing vehicle (101a) when the coupling system (1) is in operation.

[0066] Item xxix). The connection system (1) according to any of the combinations of the above items, wherein the connection system (1) includes a pivot shaft (21) connectable to the pitch adjustment assembly (5), the shaft (21) being pivotable relative to the pitch adjustment assembly (5) about a longitudinal axis (21a) specific to the pivot shaft (21), the longitudinal axis (21a) of the pivot shaft (21) providing the connection system (1) with the third axis of rotation (C).

[0067] Item xxx). A coupling system (1) according to any of the combinations of the above-mentioned items, wherein the pivot shaft (21) extends longitudinally (e.g., axially, etc.) relative to the coupling system (1).

[0068] Item xxxi). The coupling system (1) may include a servo steering accessory (23), and the coupling system (1) may be any combination of the above items.

[0069] Item xxxii). The servo steering accessory (23) comprises at least one adjustment assembly (5, 7, 9) of the connection system (1) and / or an upwardly foldable section (23i) of the main connection assembly (3), the connection system (1) being any combination of the above-mentioned items.

[0070] Item xxxiii). The servo steering accessory (23) includes a passage (23o) allowing the passage of the connecting rod, the coupling system (1) being formed by any of the combinations of the above-mentioned items.

[0071] Item xxxiv). The servo steering accessory (23) includes an actuating section (23i) connectable to the tie bar (111a) of the towing vehicle (101a), the coupling system (1) being formed by any combination of the above-mentioned items.

[0072] Item xxxv). A coupling system (1) according to any of the combinations of the above-mentioned items, wherein the working section (23i) of the servo steering accessory (23) can be connected to the coupling bar (111a) of the towing vehicle (101a) and comprises a coupling device (25).

[0073] Item xxxvi). A coupling system (1) according to any of the combinations of the above-mentioned items, wherein the coupling device (25) includes first and second coupling components (25a, 25b), which can cooperate with each other and with the coupling bar (111a) of the towing vehicle (101a).

[0074] Item xxxvii). A connection system (1) according to any of the combinations of the above-mentioned items, wherein the first and second connection components (25a, 25b) of the connection device (25) each include at least one male component operably mounted on the working section (23i) of the servo steering accessory (23) and a corresponding female component operably mounted on the connection bar (111a) of the towing vehicle (101a), and the male component of the servo steering accessory 23 is selectively and removably insertable into the corresponding female component of the connection bar (111a) of the towing vehicle (101a).

[0075] Item xxxviii). The connection device (25) can be attached and fastened to a corresponding periphery of the connection bar (111a) of the towing vehicle (101a), a coupling system (1) according to any combination of the above items.

[0076] Item xxxix). A coupling system (1) according to any of the combinations of the above-mentioned items, wherein the first and second connection components (25a, 25b) of the coupling device (25) respectively comprise first and second fastening components that can be attached to and fastened to opposite sides of the corresponding periphery of the coupling bar (111a) of the towing vehicle (101a).

[0077] Item xl) A coupling system (1) according to any of the combinations of the above-mentioned items, wherein the first and second connection components (25a, 25b) of the coupling device (25) respectively comprise first and second fastening components which can be attached and fastened to the upper and lower sides of the corresponding peripheries of the coupling bar (111a) of the towing vehicle (101a).

[0078] Item xli). A coupling system (1) according to any of the combinations of the above-mentioned items, wherein the first and second connection components (25a, 25b) of the coupling device (25) respectively include first and second fastening components that can be attached to and fastened to the left and right sides of the corresponding periphery of the coupling bar (111a) of the towing vehicle (101a).

[0079] Item xlii). A connection system (1) according to any of the combinations of the above-mentioned items, wherein the first and second fastening components can be fastened and loosened relative to one another via at least one threaded component (27) (e.g., a bolt and / or any other corresponding complementary component and / or accessory (e.g., a nut, etc.)).

[0080] Item xliiii). A connection system (1) according to any of the combinations of the above-mentioned items, wherein the first and second fastening components can be fastened and loosened relative to each other via at least one pair of threaded components (27) (e.g., bolts and / or any other corresponding complementary components and / or accessories (e.g., nuts, etc.)), each threaded component (27) being provided on either side of a corresponding periphery of the connection bar (111a) of the towing vehicle (101a).

[0081] Item xliv). A connection system (1) according to any of the combinations of the preceding items, wherein at least one of the first and second fastening components includes at least one groove (29) for receiving a portion of a corresponding threaded component (27).

[0082] Item xlv). A connection system (1) according to any of the combinations of the preceding items, wherein each of the first and second fastening components includes at least one groove (29) for receiving a portion of a corresponding threaded component (27).

[0083] Item xlvi). A connection system (1) according to any combination of the above items, wherein each groove (29) of each fastening component is elongated to allow corresponding movement and positioning adjustment of the corresponding threaded component (27) within said groove (29).

[0084] Item xlvii). The connection device (25) is pivotally attached to the distal working section (23i) of the servo steering accessory (23), the coupling system (1) being any of the combinations of the above-mentioned items.

[0085] Item xlviii). A coupling system (1) according to any of the combinations of the above-mentioned items, wherein at least one component (25a) of the connection device (25) is pivotally attached to a corresponding pivot axis (31) of the distal working section (23i) of the servo steering accessory (23).

[0086] Item xlix). A kit having corresponding components for assembling a connection system (1) according to any of the combinations of items mentioned above.

[0087] Item l). A vehicle (101) provided with a coupling system (1) according to any of the combinations of the above items.

[0088] Item li). An arrangement of a towing vehicle (101a) and a towed vehicle (101b) provided with a coupling system (1) according to any of the combinations of the above items.

[0089] Of course, as will be apparent to those skilled in the art, the system and / or its corresponding components and / or steps may have certain modifications and / or other alternatives and / or other technical / mechanical equivalents without departing from the scope of the present invention.

[0090] In view of the above, as can now be better understood, the present invention offers all the principles and advantages of the universal joint's operation, but by offsetting the pitch axis forward, it is particularly advantageous insofar as it additionally and innovatively makes it possible, for example, to better support the vertical loads imposed on a particular towed machine that is towed by the hitch bar of a tractor. Furthermore, the present invention is particularly advantageous insofar as it allows for greater flexibility in terms of "positioning" and / or "adjustment" with regard to the "connection" of servo steering accessories to the hitch bar, independent of the shape and / or dimensions etc. that the hitch bar may have.

[0091] As can now be better understood, the present invention is also advantageous in that it allows a towing vehicle (e.g., a tractor, etc.) to be coupled to a trailer vehicle (e.g., a trailer, spreader, etc.) in a manner that is faster, simpler, more accurate, more efficient, more economical, more reliable, more adjustable, more versatile, more adaptable, more durable, more versatile, more desirable, and / or improved, particularly by providing greater freedom of movement and / or angular adjustment possible (such as a greater range of possible angles), than is currently possible.

[0092] Finally, in accordance with the present invention, the connection device (and / or resulting system, etc.) and its corresponding components are preferably made of substantially rigid materials, such as metallic materials (stainless steel, titanium, etc.), hardened polymers, composite materials, and / or any other suitable materials, while the other components of the system according to the present invention can be made of any other suitable materials, such as polymeric materials (plastics, rubber, etc.) and / or any other suitable materials, depending on the particular application for which the system is designed and various parameters of interest, as will be apparent to those skilled in the art, with a view to obtaining the advantages discussed above.

[0093] Although the present invention has been described above by the preferred embodiments of the present invention, it should be made clear that any modifications to these preferred embodiments are not considered to change or alter the nature and scope of the present invention. Indeed, the appended claims should not be limited to the scope encompassed by the preferred embodiments illustrated in the examples, but should be given the broadest interpretation consistent with the overall description.

Claims

1. A coupling system (1) for coupling a towing vehicle (101a) to a towed vehicle (101b) towed by the towing vehicle (101a), comprising: a main connection assembly (3) defining a longitudinal cavity (3a) positioned, shaped, and dimensioned to receive a portion of a tie bar (111a) of said towing vehicle (101a); a pitch adjustment assembly (5) operably attached to the main connection assembly (3) and angularly adjustable relative to the main connection assembly (3) by pivoting about a first rotation axis (A); a yaw adjustment assembly (7) operably attached to the main connection assembly (3) and angularly adjustable relative to the main connection assembly (3) by pivoting about a second rotation axis (B); a roll adjustment assembly (9) operably attached to the pitch adjustment assembly (5) and angularly adjustable relative to the pitch adjustment assembly (5) by pivoting about a third rotation axis (C); Equipped with A coupling system (1), wherein the first rotation axis (A) is arranged upstream of the second rotation axis (B), i.e., on the side of the towing vehicle (101a).

2. 2. The coupling system (1) of claim 1, wherein the main connection assembly (3) is substantially "C" shaped and includes a main body (3b) defining the longitudinal cavity (3a) positioned, shaped, and dimensioned to receive the portion of the tie bar (111a) of the towing vehicle (101a).

3. 2. The coupling system (1) of claim 1, wherein the main connection assembly (3) includes first and second supports (3c) operably connectable to one another, each support (3c) having a substantially "C" shaped main body, the supports (3c) being capable of being assembled within the main connection assembly (3) to define the longitudinal cavity (3a) positioned, shaped and dimensioned to receive the portion of the tie bar (111a) of the towing vehicle (101a).

4. 4. The coupling system (1) according to claim 3, wherein the first and second supports (3c) of the main connection assembly (3) are supports that are fixedly attachable to the main connection assembly (3).

5. 4. The coupling system (1) according to claim 3, wherein the main connection assembly (3) comprises a height adjustment subassembly (3d) that can selectively and adjustably adjust an effective height (3e) of the main connection assembly (3) within the longitudinal cavity (3a) to, in particular, minimize free space, i.e. vertical play, between the longitudinal cavity (3a) and the coupling bar (111a) of the towing vehicle (101a).

6. The connection system (1) said height adjustment subassembly (3d) including at least one height adjustment component (3f), said at least one height adjustment component (3f) being operably and selectively mountable on the main body of said main connection assembly (3) within said longitudinal cavity (3a) thereof so as to selectively and adjustably adjust the vertical play of said longitudinal cavity (3a); the at least one height adjustment component (3f) being operably and selectively attachable on the main body of the first and second supports (3c) of the main connection assembly (3) via at least one fastener (11); the at least one height adjustment component (3f) being operably and selectively attachable on the main body of the first and second supports (3c) of the main connection assembly (3) via at least one pair of fasteners (11); Each fastener (11) of the height adjustment sub-assembly (3d) is insertable into a corresponding hole (13) of the main connection assembly (3); each corresponding hole (13) in the main connection assembly (3) is oblong to allow height adjustment to complement the vertical play of the longitudinal cavity (3a); and each fastener (11) is provided with a clamping device (15) for clamping said fastener in its corresponding hole at a predetermined position and height; 6. The coupling system (1) according to claim 5, comprising one or more of:

7. 3. The connection system (1) of claim 2, wherein the pitch adjustment assembly (5) comprises a main body (5a) operably attached to the main body of the main connection assembly (3) and capable of angular adjustment relative to the main connection assembly (3) by pivoting about the first axis of rotation (A).

8. 2. The coupling system (1) of claim 1, wherein the pitch adjustment assembly (5) includes at least first and second arms (5b) operatively connectable to each other, each arm (5b) having a substantially "L" shaped main body, each arm (5b) having a front portion pivotable about the first axis of rotation (A).

9. The connection system (1) the first and second arms (5b) of the pitch adjustment assembly (5) are removably and pivotally attachable to the main connection assembly (3); the front portion of each arm (5b) of the pitch adjustment assembly (5) is further connectable to and pivotable with respect to a corresponding fixed support of the main connection assembly (3); the front portion of each arm (5b) of the pitch adjustment assembly (5) is operably and selectively attachable to a corresponding fixed support of the main connection assembly (3) via at least one fastener (11); the first and second arms (5b) of the pitch adjustment assembly (5) defining a space therebetween that allows a connecting rod (17) to be inserted through a corresponding hole (3g) in a corresponding upper portion of the main connection assembly (3); the connecting rod (17) is further shaped and dimensioned to be insertable into a corresponding hole (111o) in the connecting bar (111a) of the towing vehicle (101a); the connecting rod (17) includes an upper rim (17c) positioned, shaped and dimensioned so that the connecting rod abuts against the circumferential boundary of the corresponding hole (111o) in the tie bar (111a) of the towing vehicle (101a), thereby preventing the connecting rod from slipping out of the corresponding hole in the tie bar (111a) of the towing vehicle (101a); the upper rim (17c) of the connecting rod is further positioned, shaped and dimensioned to abut against the circumferential boundary of the corresponding hole (3g) in the corresponding upper part of the main connection assembly (3), thereby preventing the connecting rod (17) from slipping out of the corresponding hole (3g) in the corresponding upper part of the main connection assembly (3); the connecting rod (17) further comprises an upper handle (17d) positioned, shaped and dimensioned to allow a user to manually pull the connecting rod (17) so that the connecting rod (17) can be removed from the coupling system (1); said connecting rod (17) comprising a substantially cylindrical main body (17b); the longitudinal axis (17a) of said connecting rod (17) provides said second axis of rotation (B) to said coupling system (1); 9. The coupling system (1) according to claim 8, comprising one or more of:

10. 10. The connection system (1) of claim 9, wherein the connection system (1) includes a pin (19) extending through the main body (3b) of the main connection assembly (3), the pin (19) having a longitudinal axis (19a) that provides the first axis of rotation (A) to the connection system (1).

11. said pin (19) extending transversely to said connection system (1); said connecting rod (17) extending perpendicular to said coupling system (1); the pin (19) is located upstream of the connecting rod (17), i.e., on the side of the towing vehicle (101a); and the pin (19) is adapted to be positioned above the coupling bar (111a) of the towing vehicle (101a) when the coupling system (1) is in operation; 11. The coupling system (1) according to claim 10, comprising one or more of:

12. 3. The coupling system (1) of claim 2, wherein the coupling system (1) includes a pivot shaft (21) connectable to the pitch adjustment assembly (5), the pivot shaft (21) pivotable relative to the pitch adjustment assembly (5) about a longitudinal axis (21 a) specific to the pivot shaft (21), the longitudinal axis (21 a) of the pivot shaft (21) providing the coupling system (1) with the third axis of rotation (C).

13. 13. A connection system (1) according to claim 12, wherein the pivot shaft (21) extends longitudinally relative to the connection system (1).

14. The coupling system (1) of claim 9, wherein the coupling system (1) comprises a servo steering accessory (23).

15. The connection system (1) the servo steering accessory (23) includes an upper foldable section (23i) of at least the adjustment assembly (5, 7, 9) and / or the main connection assembly (3) of the linkage system (1); the servo steering accessory (23) includes a passage (23o) that allows the passage of the connecting rod; the servo steering accessory (23) includes an actuation section (23i) connectable to the tie bar (111a) of the towing vehicle (101a); the actuating section (23i) of the servo steering accessory (23) is connectable to the connecting bar (111a) of the towing vehicle (101a) and comprises a connecting device (25); the connecting device (25) includes first and second connecting components (25a, 25b), which are capable of cooperating with each other and with the connecting bar (111a) of the towing vehicle (101a); the first and second connection components (25a, 25b) of the connection device (25) each include at least one male component operably mounted on the working section (23i) of the servo steering accessory (23) and a corresponding female component operably mounted on the connection bar (111a) of the towing vehicle (101a), and the male component of the servo steering accessory (23) is selectively and removably insertable into the corresponding female component of the connection bar (111a) of the towing vehicle (101a); the connecting device (25) can be attached and fastened to a corresponding periphery of the connecting bar (111a) of the towing vehicle (101a); the first and second connection components (25a, 25b) of the connection device (25) respectively include first and second fastening components that can be attached to and fastened to opposite sides of the corresponding periphery of the connecting bar (111a) of the towing vehicle (101a); the first and second connection components (25a, 25b) of the connection device (25) include first and second fastening components that can be attached to and fastened to the upper and lower sides of the corresponding peripheral portions of the connecting bar (111a) of the towing vehicle (101a); the first and second connection components (25a, 25b) of the connection device (25) include first and second fastening components that can be attached to and fastened to corresponding left and right sides of the periphery of the connecting bar (111a) of the towing vehicle (101a); said first and second clamping components being capable of being tightened and loosened relative to one another via at least one threaded component (27); the first and second fastening components can be fastened and loosened relative to each other via at least one pair of threaded components (27), each threaded component (27) being provided on either side of a corresponding periphery of the connecting bar (111a) of the towing vehicle (101a); at least one of the first and second fastening components includes at least one groove (29) for receiving a portion of a corresponding threaded component (27); each of the first and second fastening components includes at least one groove (29) for receiving a portion of a corresponding threaded component (27); each groove (29) of each fastening component is elongated to allow corresponding movement and positioning adjustment of the corresponding threaded component (27) within said groove (29); the connecting device (25) is pivotally attached to a distal actuation section (23i) of the servo steering accessory (23); and at least one component (25a) of the connecting device (25) is pivotally attached to a corresponding pivot shaft (31) of the distal actuation section (23i) of the servo steering accessory (23); 15. The coupling system (1) according to claim 14, comprising one or more of:

16. A kit with corresponding components for assembling a connection system (1) according to claim 1.

17. A vehicle (101) provided with a coupling system (1) according to claim 1.

18. 10. An arrangement of a towing vehicle (101a) and a towed vehicle (101b), the arrangement being provided with a coupling system (1) according to claim 1.

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