Abstract: Mower castor swivel and steering control systems may include a pair of castor wheel engaging assemblies carried by the lawnmower frame of the riding lawnmower. The pair of castor wheel engaging assemblies may be configured for selective actuation to prevent swiveling of the pair of front castor wheels, respectively, on the riding lawnmower. At least one actuating device may operably engage the pair of castor wheel engaging assemblies. The at least one actuating device may be configured to actuate the pair of castor wheel engaging assemblies responsive to selective actuation by a mower operator of the riding lawnmower. A castor wheel steering assembly may operably engage the pair of castor wheel engaging assemblies. The castor wheel steering assembly may be configured to steer the pair of front castor wheels responsive to selective actuation by the mower operator simultaneous with actuation of the at least one actuating device.

Abstract: An electronic drive control system for a vehicle having a right and left drive wheels and a pair of actuators engaged to respective control arms of the associated variable drive units. A pair of speed sensors are in electrical communication with the respective variable drive units and a controller. The controller receives signals from the speed sensors and determines at least one operational output of each variable drive unit based on the received signals, calculates adjustments to at least one of the actuators and adjusts at least one of the actuators to move the respective control arm of the drive unit to effectuate the desired operational output of the variable drive units.

Abstract: There is provided a mounting assembly for connecting a wheel fork to a walker apparatus. The assembly comprises a frame portion of the walker apparatus having an upper bore, lower bore, and passageway extending between and positioned radially inwards relative to the bores. The frame portion has a first annular seat located between the upper bore and the passageway. A second annular seat is located between the lower bore and the passageway. The mounting assembly comprises a shaft assembly having a threaded upper end and an annular shoulder positioned below and extending radially outwards relative to the upper end. The annular shoulder is shaped to abut the second annular seat. The shaft assembly includes a lower portion spaced-apart from the upper end and rotatably connecting to the wheel fork. The mounting assembly comprises a connecting member threadably engageable with the upper end and abuttable with the first annular seat.

Abstract: A swivel drive system, such as for providing a driving force for a vehicle, comprises multiple drive modules, with each drive module including a plurality of wheel assemblies mounted for rotation relative to an axis of the drive module, with each wheel assembly being separately rotatable relative to a respective axis of the wheel assembly. Simultaneous rotation of the wheel assemblies relative to the axis of the drive module and rotation of each wheel assembly about its own axis generates a driving force for the vehicle.

Abstract: An improved wheel frame for a skateboard, wherein slipping wheels connect with a skateboard body stably, comprises: a wheel frame main body having a screw hole on each side; two wheel axles for screwing in the screw hole of the wheel frame main body, wherein in each axle a through hole is set, the through hole has at least one longitudinal expansion joint in the thread for flexible expanding the diameter; and an expansion element for setting in the through hole of the both axles, wherein the diameter of the thread within the axle is forced to expand, so that the thread of the axles and the screw holes of the wheel frame main body are firmly held together.

Abstract: A device for limiting swivel of a wheel includes a fixed seat, a positioning groove, a driving member, and a limiting member. The fixed seat permits a fork to be connected pivotally thereto, and permits a frame to be connected fixedly thereto. The driving member is connected rotatably to the fixed seat. The limiting member is mounted extendably and retractably on the fixed seat. The positioning groove is disposed to the fork. The limiting member is extendable from the fixed seat to engage the positioning groove so as to prevent rotation of the fork, and is retractable into the fixed seat to remove from the positioning groove to allow for rotation of the fork. The driving member has a caroming surface rotatable to drive extension and retraction of the limiting member.

Abstract: A front axle assembly for a floater or other agricultural implement has a hollow shaft with pressed-in axle stubs for mounting the shaft to a pair of bearing assemblies. A pair of discs are mounted or otherwise secured to ends of the hollow shaft. The discs are angled inwardly from a position generally adjacent an inner end of the pressed-in axle stubs. The placement of the discs reduces stress applied to the hollow shaft during use.

Abstract: A zero turning radius vehicle is disclosed having a power transmission operatively and independently engaged to each one of at least two driven wheels, and including at least one caster, supporting a portion of said vehicle weight, rotatably connected to the vehicle whereby the caster is operatively biased while the vehicle is operating at a side angle such that the caster neutralizes the gravitational force that would tend to drive the vehicle downward when traversing a slope.

Abstract: A skateboard bushing securement system is provided for improvement of skateboard truck stability and performance. Base washers having a raised annular ring are positioned on opposite sides of bushings engaged to the truck hanger. The annular rings are sized to engage around the circumference of the bushings. Sleeve washers having axially located projecting sleeves communicate against the base washers during compression. The projecting sleeves engage inside the axial cavity of the bushings on both sides of the hanger. Stability and performance is enhanced through the stabilization of both bushings axially and about their circumference by the annular rings.

Abstract: A front wheel assembly for a child support device including a first castor wheel coupled to first swivel joint and a second castor wheel coupled to a second swivel joint, the first and second swivel joints being operatively coupled together by a linkage that steers the wheels in unison and maintains a generally parallel alignment between the wheels. The wheels are sufficiently spaced apart to allow for 360-degree pivoting of each of the wheels. Also a child support device such as a stroller, including such a front wheel assembly.

Abstract: A stroller chassis includes a frame and a wheel that are connected to each other by a hinge defining a pivoting axis extending perpendicularly to the wheel's axis. The chassis can also include a bearing for guiding the frame and the wheel in free rotation about the axis. The chassis can include two plates, each including an annular body substantially centered with respect to the pivoting axis and arranged externally around the bearing. The two annular bodies are connected rotatably about the pivoting axis to the frame and the wheel and define substantially planar surfaces on the plate surfaces, the planar surfaces being mutually adjoining along a plane that is transverse to the pivoting axis. The plates cooperate with one another through sliding and frictional contact. The Chassis can also include resilient member for pressing the annular bodies against each other to maintain contact between the planar surfaces.

Abstract: A front fork assembly for use with a three-wheel agricultural floater has a yoke having a first yoke portion and a second yoke portion extending downwardly from generally opposite ends of an upper yoke portion. A first plurality of wheel mounting points is formed on the first yoke portion and a second plurality of wheel mounting points is formed on the second yoke portion. The front fork assembly further includes a first wheel mounting arrangement formed from selected mounting points of the first plurality and the second plurality of mounting points. A second wheel mounting arrangement, different from the first wheel mounting arrangement, is formed from selected mounting points of the first plurality and the second plurality of mounting points. In this regard, the front fork assembly provides more than one mounting position for a front floatation tire.

Abstract: An industrial truck comprising a pair of wheel arms, which at their free end in each case comprise a wheel arm end, each of which comprising a bearing body and a pair of load wheels, the load wheels in each case being rotatably mounted on a rocker, and the rocker being pivotably mounted on the bearing body in a region located between the load wheels, the bearing body comprising a bearing projection on which the rocker is mounted such that the rocker laterally defines the wheel arm end.

Abstract: A ride-on, self-propelled vehicle having front caster wheels, such as a zero-turn mower, includes a front brake system. The actuating power for the front brake pass through a spindle supporting the front caster wheel. In a preferred embodiment, a center shaft of each spindle or a concentric outer ring of a sleeve of each spindle passes a force from a brake actuator to a brake for the respective caster wheel. Actuation of the brake actuator moves a member into frictional contact with a portion of the front wheel or an object attached to the front wheel to applying a braking force.

Abstract: A work machine includes a frame, at least one drive wheel carried by the frame, at least one caster wheel assembly carried by the frame, and at least one turn assist arrangement. Each turn assist arrangement is coupled between the frame and a corresponding caster wheel assembly. Each turn assist arrangement is configured to bias the corresponding caster wheel assembly during an operator commanded turn, and to be overridden by forces applied by the ground to the caster wheel assembly.

Abstract: Improvements in a trailer hitching and tracking steering system are disclosed include a new style RV or wagon style RV that includes an extendable, variable position tow bar that accommodates misalignment of a tow vehicle. The tow bar can be rotated for storage within the RV wagon. Further improvements include a wheel steering mechanism to improve tracking of a towed vehicle using a bi-directional caster front suspension for steering a wagon style RV in both a forward and reverse direction. The caster of the front wheels is automatically re-directed depending upon the direction of travel of the RV. The suspension system includes a steerable rear suspension that minimizes the amount the back wheels will cut the corner when turning. The improvements also include the use of visible light beams to guide a tow vehicle backing up to an RV to be correctly positioned for hitching without assistance.

Abstract: This stroller chassis comprises a frame (10) and at least one wheel (20) resting on the ground, which are connected to each other by a mechanical hinge assembly (40) defining a pivoting axis (Z40-Z40), which extends perpendicularly to the wheel rolling axis on the ground (Y20-Y20) and about which pivoting axis the frame and the wheel pivot with respect to each other, and also comprising at least one bearing (42) for guiding the frame and the wheel in free rotation about said axis with respect to each other.

Abstract: An industrial truck comprising a pair of wheel arms, which at their free end in each case comprise a wheel arm end, each of which comprising a bearing body and a pair of load wheels, the load wheels in each case being rotatably mounted on a rocker, and the rocker being pivotably mounted on the bearing body in a region located between the load wheels, the bearing body comprising a bearing projection on which the rocker is mounted such that the rocker laterally defines the wheel arm end.

Abstract: A vehicle has first and second rear drive wheels that are driven independently of each other and a pair of front wheels that freely rotate about a vertical axis wherein the rear drive wheels and the front wheels are rotatably mounted to a frame. A locking mechanism is operatively connected to the pair of front wheels to restrain the rotation of the front wheels about the vertical axis and maintain the pair of front wheels in a forward position while the operator engages the locking mechanism. When the operator releases the locking mechanism, the locking mechanism is removed from the pair of front wheels and the pair of front wheels are free to rotate about the vertical axis.

Abstract: Improvements in a trailer hitching and tracking steering system are disclosed include a new style RV or wagon style RV that includes an extendable, variable position tow bar that accommodates misalignment of a tow vehicle. The tow bar can be rotated for storage within the RV wagon. Further improvements include a wheel steering mechanism to improve tracking of a towed vehicle using a bi-directional caster front suspension for steering a wagon style RV in both a forward and reverse direction. The caster of the front wheels is automatically re-directed depending upon the direction of travel of the RV. The suspension system includes a steerable rear suspension that minimizes the amount the back wheels will cut the corner when turning. The improvements also include the use of visible light beams to guide a tow vehicle backing up to an RV to be correctly positioned for hitching without assistance.

Abstract: A vehicle has first and second rear drive wheels that are driven independently of each other and a pair of front wheels that freely rotate about a vertical axis wherein the rear drive wheels and the front wheels are rotatably mounted to a frame. A locking mechanism is operatively connected to the pair of front wheels to restrain the rotation of the front wheels about the vertical axis and maintain the pair of front wheels in a forward position while the operator engages the locking mechanism. When the operator releases the locking mechanism, the locking mechanism is removed from the pair of front wheels and the pair of front wheels are free to rotate about the vertical axis.

Abstract: Improvements in a trailer hitching and tracking steering system are disclosed include a new style RV or wagon style RV that includes an extendable, variable position tow bar that accommodates misalignment of a tow vehicle. The tow bar can be rotated for storage within the RV wagon. Further improvements include a wheel steering mechanism to improve tracking of a towed vehicle using a bi-directional caster front suspension for steering a wagon style RV in both a forward and reverse direction. The caster of the front wheels is automatically re-directed depending upon the direction of travel of the RV. The suspension system includes a steerable rear suspension that minimizes the amount the back wheels will cut the comer when turning. The improvements also include the use of visible light beams to guide a tow vehicle backing up to an RV to be correctly positioned for hitching without assistance.

Abstract: A trailer wheel assembly for mounting on the rear of a trailer has a structure that reduces or prevents oscillations about a vertical axis arising during high speed towing. The structure includes dual wheels mounted on an axle, a resilient support, and a suspension arm extending rearwardly and downwardly from the resilient support to the axle for the wheels.

Abstract: An articulating camera transport apparatus and corresponding methods involving an articulating camera truck for accommodating a camera element and for engaging a set of camera dolly tracks, the tracks having a curvature, the truck including a carrier and an undercarriage, the undercarriage having a plurality of articulating wheels and a structure for gimbaling the plurality of articulating wheels for accommodating the curvature and for facilitating a smooth passage of the truck along the tracks.

Abstract: A truck includes a chassis 1 supporting a cab 3 and a deck 9 which is supported at least by a rearmost axle 15 and wheels 17. The deck 9 is tiltable relative to the chassis 1 about a pivot axis 27 located in front of the rearmost axle 15 of the truck and arranged such that as the deck 9 tilts rearwardly, the chassis 1 tilts forwardly and the deck 9 lowers towards the rearmost axle. A forward part of a rear suspension arrangement may be operatively connected to the chassis 1 so that the forward part moves upwardly towards the deck 9 as the deck 9 is tilted.

Abstract: A high-performance, light-duty, utility trailer that is pulled by a tow vehicle utilizing a two point coupling to the tow vehicle and a swiveling axle assembly. This novel design includes a tilting hitch assembly attached to the trailer frame and swiveling casters attached to the rear corners of the trailer frame, creating a three point “landing gear” for easy installation onto the tow vehicle and providing good un-hitched mobility allowing the trailer owner to easily move the trailer out-of-the-way when stored between each use. A wheel swiveling assembly that can be configured to provide steering geometry capable of being customized to accommodate driving habits and road conditions. A two point hitch assembly that allows the removal of adaptors when not in use for both functional and aesthetic purposes.

Abstract: A work machine includes a frame, at least one drive wheel carried by the frame, at least one caster wheel assembly carried by the frame, and at least one turn assist arrangement. Each turn assist arrangement is coupled between the frame and a corresponding caster wheel assembly. Each turn assist arrangement is configured to bias the corresponding caster wheel assembly during an operator commanded turn, and to be overridden by forces applied by the ground to the caster wheel assembly.

Abstract: An articulating camera transport apparatus and corresponding methods involving an articulating camera truck for accommodating a camera element and for engaging a set of camera dolly tracks, the tracks having a curvature, the truck including a carrier and an undercarriage, the undercarriage having a plurality of articulating wheels and a structure for gimbaling the plurality of articulating wheels for accommodating the curvature and for facilitating a smooth passage of the truck along the tracks. The gimbaling structure has a gimbaling mechanism which includes a rocker arm.

Abstract: An articulating camera transport apparatus and corresponding methods involving an articulating camera truck for accommodating a camera element and for engaging a set of camera dolly tracks, the tracks having a curvature, the truck including a carrier and an undercarriage, the undercarriage having a plurality of articulating wheels and a structure for gimbaling the plurality of articulating wheels for accommodating the curvature and for facilitating a smooth passage of the truck along the tracks.

Abstract: A wheel for a supermarket trolley, includes an immobilizer which is connected to the trolley by way of a simple carrier limb having a shaft fixed thereto. The rim of the wheel is embodied in such a way that, when the wheel is mounted on the trolley, the battery, running surface and other parts can be replaced via an opening that can be closed by a cover.

Abstract: A hand-propelled vehicle for passenger transport, in particular a pushchair, includes a chassis with at least three wheels, at least two of which are pivotally connected to the chassis, wherein the pivotable wheels are connected by at least one shaft which is pivotally connected to a fixed part of the chassis. The pivotable wheels are further situated behind the at least one fixed wheel as seen in the direction of travel of the vehicle, and the pivot connection of the shaft to the fixed part of the chassis is situated in front of the shaft as seen in the direction of travel. It is thus possible to arrange a steering function in frame constructions where there is no room for pivotable front wheels.

Abstract: A trolley wheel mechanism has two caster wheel assemblies each having a pair of wheels mounted on a rotatable housing. In a free mode the wheels are free to both rotate and to swivel. This is caused by the user pressing a release pedal. In a unidirectional mode a retainer lock engages a brake disc to prevent swivelling of the housing. This is caused by the user pressing both pedals simultaneously. A brake mode is caused by the user pressing the apply pedal.

Abstract: An axle construction for a vehicle has a rigid axle and wheels mounted at opposite ends of the rigid axle. Supports respectively at the opposite ends of the rigid axle respectively support opposite sides of a chassis frame of the vehicle from the rigid axle. A triangular support is journalled at one point centrally to the rigid axle and at two points to the opposite sides of the chassis frame and other, longitudinal supports are journalled to the rigid axle on opposite sides of the middle of the rigid axle for turning the rigid axle. The supports are attached to the rigid axle by joints which allow the rigid axle to turn in the horizontal plane relative to the supports and the supports to rock relative to the rigid axle.

Abstract: A cargo trailer for towing behind another vehicle has a cargo container platform and a stabilized caster swivel assembly supporting the cargo container platform. The swivel assembly includes an elongated frame, a caster wheel on a swivel member being rotatably mounted about a vertical axis to a rear end of the frame, a cam member mounted on the swivel member for rotation therewith, a centering mechanism coupled to the cam member, a hydraulic stabilizing mechanism coupled to the swivel member, and a hydraulic control circuit mounted on the frame.

Abstract: For an implement, a caster wheel assembly including a tubular member connected to reciprocate as the caster wheel swivels. An adjustable brake assembly resists movement of the tubular member to eliminate caster wheel wobble as the implement is transported. A plurality of caster wheel assemblies permit the implement to crab between the towing vehicle and a trailing implement. The brake assemblies provide convenient locking and control of selective wheels for the desired swivel action in numerous operating situations.

Abstract: The load of a trailer is applied to lower members of shackles that have upper members rigidly attached to axle housings of tandem axle assemblies. Linkages and levers are connected between a lower pivotal member of a swivel assembly supporting the load and the ends of the axle assemblies. Rotation of the main frame of the trailer on the swivel arrangement during turning actuates the linkages and levers for displacing both axle assemblies in the desired directions to facilitate turning. The upper and lower members of each shackle move in a relative arcuate direction for raising the load slightly as the angle of turning is increased. The force of the load tends to return the shackles and the axle assemblies to the normal positions for straight travel and thereby contributes to stability.

Abstract: A removable frame for reduction of axle loads for heavy vehicles is disclosed herein. The frame includes a pair of lever arms pivoted to each other at one end with adjustable biasing means between the free ends of the lever arms. One of the lever arms has at least one wheel supported thereon while the other arm is rotatably connected to a support member adapted to be attached to a vehicle frame. A centering mechanism normally maintains the lever arm in a predetermined position on the support member and accommodates rotation with respect to each other.

Abstract: A control wheel for an agricultural machine of the folding type in which the wings fold to trail behind a central section. The control wheel comprises a castor wheel coupled with tensioning devices which enable the wheel to track normally while folding or unfolding but to align itself in the direction of travel when folding is completed.

Abstract: A removable frame for reduction of axle loads for heavy vehicles is disclosed herein. The frame includes a pair of lever arms pivoted to each other at one end with adjustable biasing means between the free ends of the lever arms. One of the lever arms has at least one wheel supported thereon while the other arm is rotatably connected to a support member adapted to be attached to a vehicle frame. A centering mechanism normally maintains the lever arm in a predetermined position on the support member and accommodates rotation with respect to each other.