Abstract: A tow bar assembly has a shank portion for attachment to the towing vehicle hitch, a pivot joint on a trailing end of the shank, and two arms extending from the pivot joint for attachment to the towed load. A stowage block on the shank includes two transversely oriented slots, for receiving a tab on the arms and thereby hold the arms in a transverse, horizontal stowage position. The arms each telescope between extended and retracted positions. A latch, having a retention shaft with a handle, automatically engages to lock the arm in the extended position when the trailing end of the arm is pulled to the extended position. The retention shaft has a shape which, depending on its rotational position as controlled by the handle, either allows the telescoping or interferes with the telescoping, locking the arm in the extended position.

Abstract: A swivel trailer is described that can include a swivel hitch and swivel axle configuration which prevents a vehicle and trailer from jackknifing.

Abstract: The present invention relates to a device and method for securing a non motorized trailer from unauthorized movement by attaching a keyed tongue bar to an authorized vehicle and attaching a paired tongue receiver to the non motorized trailer. If a vehicle does not have attached thereto the keyed tongue, the vehicle, i.e. unauthorized vehicle, will not be able to be attached to and move the trailer. The keyed tongue bar and paired tongue receiver have an abstract-shaped end and matched abstract-shaped opening, respectively.

Abstract: An adjustment bracket used to adjust a space between a first part and a second part is provided. The adjustment bracket comprises a cylindrical adjustment body including a first disc and a second disc. The first and the second discs are formed by cutting the adjustment body into two equal halves along a slanted surface. The first disc and the second disc are capable of counter rotating at an equal amount at an opposite direction, and the adjustment body has a substantially same thickness around its circumference at a home position, and has a varied thickness when the first and second discs rotates along a central axis away from the home position.

Abstract: A towing apparatus for use with a vehicle having a passage, such as a walkway through a roof bolter. The apparatus includes a towing implement adapted for spanning the passage in an operative condition and for exposing the passage in a stowed condition.

Abstract: A towing assembly includes a hitch that may be removably coupled to a first cart. A first rod is removably coupled between the hitch and a second cart to facilitate towing of the second cart with the first cart. The first rod is structured to be quickly coupled and de-coupled from the first cart and the second cart. A pivot is coupled to the first rod. A second rod is coupled to the pivot such that the second rod is pivotally coupled to the first rod. The second rod is positionable in a deployed position with respect to the first rod. The second rod is removably coupled to the second cart. The second rod is structured to be quickly coupled and de-coupled from the second cart.

Abstract: A tightening mechanism for a hinge assembly includes a first housing having a pair of outwardly extending spaced apart ears having aligned first bores extending through them. A second housing has a length which allows it to fit between the ears and has a pair of abutting second bores which are tapered inwardly toward one another. Tapered cylindrical bushings are configured to fit within the second bores. The tapered bushings have aligned third bores which are co-axial with one another and with the second bores. A coupling mechanism extends through the third bores and holds the second housing rotatably in the first housing. A clamping mechanism urges the bushings toward one another and inwardly into the second bores against the pin.

Abstract: A ball mount holder assembly for mounting to a carrying device includes a body having opposed sides and a stake flange that extends substantially perpendicularly from one of the opposed sides that is adapted to be secured to a surface. A pin flange extends substantially perpendicularly from an opposite one of the opposed sides and in a direction opposite the stake flange and is adapted to receive and carry a ball mount.

Abstract: A towing bar assembly that is convertible from an articulated assembly for extracting a vehicle in an inaccessible location to a rigid assembly for safely towing a vehicle on a road.

Abstract: A towing apparatus for use with a vehicle having a passage, such as a walkway through a roof bolter. The apparatus includes a towing implement adapted for spanning the passage in an operative condition and for exposing the passage in a stowed condition.

Abstract: A collapsible vehicle trailer consisting of a frame/cargo surface and a draw mounted to the frame/cargo surface by a hinge connection in such a manner that the draw may be folded down and pushed in underneath the frame/cargo surface, and that to the frame and/or cargo surface a hinged wheel suspension is arranged consisting of wheels, hub and spring so that the wheel with suspension may be rotated to become flush with the cargo surface, and that between wheel suspensions one or more shafts being articulated at the centre and at each side towards the wheels are disposed. One or more bars are arranged between the hinged draw and the center part/section of the shaft, whereby the bar(s), when the draw is folded backwards in underneath the cargo surface, pushes the centre part/section of shaft backwards, whereby the wheels and wheel suspensions are rotated in underneath and flush with the frame/cargo surface.

Abstract: A tow bar includes towing and towed hitch members; a head member with a front connector for connecting to the towing hitch member; tow bar legs connected to the head member, each tow bar leg including an outer member and an inner member telescopingly displaceable in the outer member; rear connectors to connect the inner members to the towed hitch member; and locking members each having a first portion adhesively secured to the distal end of the outer member, a second portion fixedly secured to the inner member, and a third portion including a transversely-oriented latch cavity through each inner member, biased opposing latches mounted in the latch cavity wherein the locking member automatically locks the respective inner and outer members relative to each other.

Abstract: A collapsible hitched trailer comprised of a bed member having a center bed section, and two pivotable bed sections pivotally attached to opposite sides of the center bed section. A protracting wheel axle member attached to an underside of the center bed section. Two wheels, one attached to each opposite end of the wheel axle member, and a draw bar member attached to one of the two pivotable bed sections, wherein the hitched trailer can be folded into a smaller shape and stored in a smaller area.

Abstract: A tow bar has first and second bar elements telescopically engaged to slide between an extended configuration and a collapsed configuration. A latch housing mounted on the second bar element pivotally mounts a latch element. A locking sear having a sear locking surface and a sear back surface is pivotally mounted to move between a locking position and an unlocking position. In the locking position, a sear locking surface abuts a latch stop of the first bar element to lock the first and second bar elements in the extended configuration. In the unlocking position, the sear locking surface disengages the latch stop, allowing the first and second bar elements to move to the collapsed configuration.

Abstract: A tow bar has a first bar element, a second bar element, and a latch mechanism. The first bar element has a proximal end, a first elongate body, and a latch stop opposite the proximal end. The second bar element has a distal end, a second elongate body, and a latch end opposite the distal end. The first bar element is telescopically engaged within the second bar element to slide between an extended configuration and a collapsed configuration. The latch mechanism is adapted to abut the latch stop to lock the first and second bar elements in the extended configuration.

Abstract: In order for a trailer hitch comprising a cross-member, which has its longitudinal direction extending transversely to a longitudinal direction of a vehicle and which can be connected to a body of a vehicle, a ball neck, which at a first end region is connected to the cross-member by means of a bearing unit and at a second end region carries a coupling ball, to be improved such that it has a lower weight, it is proposed that the cross-member is in the form of a hollow shaped body which varies in cross-sectional shape and has a central region and outer regions which adjoin the central region on both sides and extend as far as outer ends of the hollow shaped body, and that, starting from the outer ends, a cross-sectional shape of the outer regions has a cross-sectional area that increases progressively in the direction of the central region.

Abstract: A locking mechanism for a tow bar having a leg with telescoping inner and outer members, the locking mechanism including a shuttle device secured to a proximal end of the inner member and having a peripheral groove spaced between a tapered forward end and a tapered rearward end thereof. The locking mechanism also including an aft latching device for locking the tow bar leg in a deployed configuration, and a fore latching device for locking the tow bar leg in a storage configuration. Each fore and aft latching device including a pair of latch elements pivotally and biasingly mounted in a pair of opposing slots of a housing, the slots being superimposed over corresponding openings through the outer member for cooperatively, simultaneously and lockingly interacting with the peripheral groove of the shuttle device.

Abstract: The present invention relates to a towing bar assembly that may convert from an articulated assembly extracting a vehicle in an inaccessible location to a rigid assembly for safely towing a vehicle on a road.

Abstract: An architecture is presented that provides a double hinged tow hitch. The tow hitch is attached to a tow vehicle and allows full traction to the ground and complete control of steering. The tow hitch comprises two hinges secured together by a pin positioned at an upper portion of the hinges and a pin positioned at a lower portion of the hinges. The pins secure the hinges together and allow the hinges to flex in two positions. Additionally, the tow hitch comprises springs positioned on either side of the hinges and rubber positioned between the hinges to act as a shock absorber. When pressure is applied to the tow hitch, the springs will collapse into either the upper or lower portions of the hinges, causing the hinges to flex in two positions and pressing against the rubber between the hinges, thus acting as a suspension system for the tow hitch.

Abstract: The present invention relates to a towing bar assembly that may convert from an articulated assembly extracting a vehicle in an inaccessible location to a rigid assembly for safely towing a vehicle on a road.

Abstract: A tow vehicle and tow assembly are disclosed that conceals the tow assembly underneath the tow vehicle.

Abstract: The invention provides space saving, locking and support features for most single pole trailer tongue, having: a support leg, which has the coupler hitch on the opposite end, pivots on the tongue into a vertical position where it acts as a support for the tongue. This leg is secured vertically, using aligned brackets on both sections, by a hitch pin or locking device, so that it can be locked in place as a deterrent to theft. When in the horizontal position, the support leg is secured to the tongue by a hitch pin and may be connected to a towing vehicle. A flip-down leg, pivotally mounted on the tongue, which drops down when the securing hitch pin is removed part way, to provide temporary support for the tongue while the support leg is being moved to the vertical position.

Abstract: A collapsible vehicle trailer consisting of a frame/cargo surface and a draw mounted to the frame/cargo surface by a hinge connection in such a manner that the draw may be folded down and pushed in underneath the frame/cargo surface, and that to the frame and/or cargo surface a hinged wheel suspension is arranged consisting of wheels, hub and spring so that the wheel with suspension may be rotated to become flush with the cargo surface, and that between wheel suspensions one or more shafts being articulated at the centre and at each side towards the wheels are disposed. One or more bars are arranged between the hinged draw and the center part/section of the shaft, whereby the bar(s), when the draw is folded backwards in underneath the cargo surface, pushes the centre part/section of shaft backwards, whereby the wheels and wheel suspensions are rotated in underneath and flush with the frame/cargo surface.

Abstract: A tow bar having orthogonally-articulated towed-vehicle connectors includes a body element; a first connector element secured to and extending forwardly from the body element, the first connector element being structured to releasably connect the body element to a towing hitch arrangement of a towing vehicle; at least one tow bar leg having a fore end connected to the body element, and an aft end extending rearwardly from the body element; and a second connector element secured to and extending rearwardly from the aft end of the at least one tow bar leg, the second connector element being orthogonally-articulated and structured to releasably connect the aft end of the at least one tow bar leg to a towing hitch arrangement of the towed vehicle.

Abstract: Disclosed is a trailer hitch system that is configured to rotate to a stowing position and an operating position. When in the operational position, a coupler arm of the trailer is aligned with the longitudinal axis of the trailer so that the coupler arm contributes to the length of the trailer. When in the stowing position, the coupler arm of the trailer is bent at an angle relative to the longitudinal axis of the trailer so that the coupling arm does not contribute to the overall length of the trailer.

Abstract: Disclosed is a trailer hitch system that is configured to rotate to a stowing position and an operating position. When in the operational position, a coupler arm of the trailer is aligned with the longitudinal axis of the trailer so that the coupler arm contributes to the length of the trailer. When in the stowing position, the coupler arm of the trailer is bent at an angle relative to the longitudinal axis of the trailer so that the coupler arm does not contribute to the overall length of the trailer.

Abstract: A tow bar having a towing hitch member with a pintle hitch and secured to a towing vehicle; a towed hitch member secured to a towed vehicle; a head member with a lunette ring releasably connectable to the pintle hitch; first and second tow bar legs with proximal ends pivotally connected to, and extending rearwardly from, the head member; towed connector elements releasably connecting distal ends of the first and second tow bar legs to the towed hitch member; and an equalizer member structured to maintain the first and second tow bar legs at equiangular orientations relative to the head member.

Abstract: A man-carrying vehicle has a chassis, which can be reduced for the vehicle to be easy to store, put away and transport; the chassis includes a front part, a rear part, and a stretching and reducing device interposed between the front and the rear parts; the stretching and reducing device includes first and second stationary components, first and second crank and connecting rod combinations, and a stretching and reducing assistant unit; the first and the second stationary components are fixedly joined on the front and the rear parts respectively; the crank and connecting rod combinations are interposed between and pivoted to the stationary components; the stretching and reducing assistant unit is interposed between and pivoted on one of the stationary components and one of the crank and connecting rod combinations to provide power to change position of the front part in relation to the rear part of the chassis.

Abstract: A tow bar apparatus has a hitch member, a pair of linkages, and a pair of tow bars. The hitch member has a receiver tube adapted to removably engage a towing vehicle, and a vertical pivot post having a vertical axis that is generally orthogonal to the surface when the hitch member is mounted on the towing vehicle. Each of the pair of linkages connects the hitch member to a proximal end of one of the pair of tow bars. Each linkage includes a vertical aperture that pivotally mounts the linkage on the vertical pivot post, and a horizontal pivot pin attached to one of the pair of tow bars. A towed vehicle attachment element of a distal end of each of the tow bars is adapted to be removably attached to the towed vehicle.

Abstract: A trailer tongue assembly is provided which has a first section, a second section and a hinge pivotally connecting the first and section sections. The first section has a first end with a cross-sectional configuration and the second section has a second end with a cross-sectional configuration. The hinge has a fixed section, a rotatable section, and a pivot member. The fixed section has a first attachment flange with a cross-sectional configuration corresponding to the cross-sectional configuration of the first end. The rotatable section has a second attachment flange with a cross-sectional configuration corresponding to the cross-sectional configuration of the second end. The pivot member rotatably connects the fixed and rotatable sections and the first attachment flange is fixably attached to the first end while the second attachment flange is fixably attached to the second end.

Abstract: Disclosed is a trailer hitch system that is configured to rotate to a stowing position and an operating position. When in the operational position, a coupler arm of the trailer is aligned with the longitudinal axis of the trailer so that the coupler arm contributes to the length of the trailer. When in the stowing position, the coupler arm of the trailer is bent at an angle relative to the longitudinal axis of the trailer so that the coupling arm does not contribute to the overall length of the trailer.

Abstract: An agricultural harvester is disclosed having a crop processor movable into and out of the crop flow path and a service compartment arranged rearwardly of the crop flow path for accommodating an operator. A lifting mechanism is provided in the service compartment which is movable between a first position above the crop processor when the latter is withdrawn from the crop flow path and a second position outside the service compartment.

Abstract: A towbar for flat-towing a vehicle, including two telescoping arms each pivotally attached at a pivot end having a heavy-gauge eyelet for attaching to a pintle hitch on the rear of a towing vehicle, with each arm having a gear element at the pivot end, in gear engagement with the gear element of the other arm. The telescoping arms automatically lock at a predetermined length.

Abstract: A portable tank apparatus has a yoke pivotal on a transverse member between a service towing position and a raised position, and a pair of hingedly connected brace members at the rear of the apparatus and operable by an actuator to retract the wheels or lower the wheels to the ground.

Abstract: Disclosed is a trailer hitch system that is configured to rotate to a stowing position and an operating position. When in the operational position, a coupler arm of the trailer is aligned with the longitudinal axis of the trailer so that the coupler arm contributes to the length of the trailer. When in the stowing position, the coupler arm of the trailer is bent at an angle relative to the longitudinal axis of the trailer so that the coupling arm does not contribute to the overall length of the trailer.

Abstract: The present invention relates to a retractable king pin assembly for a trailer operable between an extended position, for engagement with a truck or tractor fifth wheel, and a retracted position, wherein the king pin is retracted to prevent engagement by a fifth wheel to permit the trailer to be left unattended without the threat of being stolen. The king pin security device includes a base member having an aperture, a king pin disposed in the base member aperture, and an actuator operatively connected to the king pin. The actuator either rotates or slides the king pin to move it in an axial direction between the extended and retracted positions. The actuator can include an electric motor, a solenoid or a hydraulic or pneumatic cylinder.

Abstract: Disclosed is a trailer hitch system that is configured to rotate to a stowing position and an operating position. When in the operational position, a coupler arm of the trailer is aligned with the longitudinal axis of the trailer so that the coupler arm contributes to the length of the trailer. When in the stowing position, the coupler arm of the trailer is bent at an angle relative to the longitudinal axis of the trailer so that the coupling arm does not contribute to the overall length of the trailer.

Abstract: A towbar for a vehicle. The towbar includes a yoke and a drawbar rotatably connected to the yoke. The drawbar is attached to the towing vehicle. A pair of connecting bars is attached to the yoke and to the vehicle being towed. A lock assembly is connected between the yoke and the drawbar. The lock assembly is adapted to move from a first position in which the drawbar is free to rotate and a second position in which the drawbar is retained to the yoke.

Abstract: A coupling device for a handling trolley comprises a drawbar (22) arranged at the front of the trolley and designed to co-operate with the hook (24) provided at the back of a tractor, in particular a trolley preceding a line of trolleys. The drawbar (22) comprises a longitudinal slot (36) wherein the hook (24) is designed to slide such that the hook can slide in the longitudinal slot between a position spaced apart wherein the trolley (10) is at a maximum distance from the tractor while it is being towed and a closer position wherein the trolley is at a minimum distance from the tractor to reduce the space requirement when it is stopped.

Abstract: A coupling for coupling first and second members. The members define an opening for extended and circular counterparts. The counterparts turn on the members and each other while the members contact the counterparts to urge them together. The counterparts, one after another between the members, move and release the members.

Abstract: A stable lightweight cargo trailer for a bicycle with a demountable bicycle type wheel having a collapsible frame assembly, the trailer including an upper elongate frame member defining an upper limit of a cargo compartment and a lower frame member having a portion defining a lower limit of the cargo compartment, the upper frame member and the lower frame portion being pivotally connected by intermediate end and side members such that the upper frame member is foldable from an extended position to a collapsed position allowing the upper frame member to collapse to overly said lower frame member into a compact configuration.

Abstract: A car towing apparatus which, in its extended locked position, is a rigid tow bar attached to the front end of a towable vehicle and which subsequently can be folded into a compact structure and stored in a visually and non-obstructing, secured position to facilitate the vehicle being driven legally and safely on the highway.