Abstract: A wheelchair towing coupler that connects a wheelchair for towing behind a bicycle or other vehicle by connecting the wheelchair to a structural member of the vehicle or to an existing towing hitch, that enables towing the wheelchair while occupied by a seated user and that also provides the wheelchair user with the ability to decouple from the vehicle to operate the wheelchair independently as needed.

Abstract: Tow bar arrangement (100) for interconnection of a pulling vehicle (10) and a pulled trailer (20). The arrangement (100) comprises a control device (110) with a force sensor (111) arranged to sense an instantaneous relative force between vehicle (10) and trailer (20). The control device (110) is arranged to produce a control signal for an electric motor (21) arranged to propel the trailer (20) so that a motor force counter-acts said measured force. The invention is characterised in that the control device (110) is arranged to a first time series of force measurements, in that the control device (110) comprises a low-pass filter (112) producing a second low-pass filtered time series, and in that a regulator (113) is arranged to regulate said second time series to produce said control signal.

Abstract: A bicycle saddle accessory coupling device includes a body, a first accessory, a second accessory, and a positioning unit. The body includes an attaching portion coupled to a bicycle saddle, a first connecting portion, and a second connecting portion located between the attaching portion and the first connecting portion. The first accessory includes a first guiding portion removably connected to the first connecting portion and a first coupling portion. The second accessory includes a second guiding portion removably connected to the second connecting portion and a second coupling portion. The positioning unit is disposed on the body and removably coupled to the first and coupling portions.

Abstract: A child trailer has a bottom frame and a side frame, and a folding joint is disposed on the tail support of the trailer. A front end of the bottom frame is rotationally connected with a front end of the side frame. A top support rod is fixed at a rear end of the side frame. Left and right ends of the top support rod are respectively connected with an upper-section tail support rod rotating around an axis thereof. A tail end of the upper-section tail support rod is connected with a folding joint. The other end of the folding joint is connected with a lower-section tail support rod. A rear end of the bottom frame is connected with a tail rack rotating around a shaft parallel to the axis of the top support rod.

Abstract: Provided is a robot including a main body having a traveling wheel and a traveling motor for rotating the traveling wheel, a seating body disposed above the main body, a left projector disposed at a left side of the main body to scan a beam toward a left lower direction, a right projector disposed at a right side of the main body to scan a beam toward a right lower direction, and a processor for controlling the traveling motor, the left projector, and the right projector.

Abstract: A mobility cart system includes a first platform with a plurality of wheels extending therefrom and configured to engage with a ground surface; a first control console with a first support attached to and extending from the first platform; a first seat attached to and extending from the first platform; and a power source to provide traversing movement of the first platform via the plurality of wheels; the first platform is to support a first user.

Abstract: A carrying device is provided that includes a load compartment configured to accommodate a load; at least one wheel rotatably coupled to the load compartment and configured to roll along a ground; a shaft attached to the load compartment; and a coupling element attached the shaft. The coupling element is configured to couple the carrying device to a person in a manner that allows towing of the carrying device by the person. Additional versions of the carrying device and a system including the same are also disclosed.

Abstract: The present invention relates to a cart (1) for use as a bicycle trailer (1) or as a handcart (1) with a frame (10) with a pair of wheels (13) and with a loading surface (14) and with a foldable drawbar (3) with a drawbar body (33) which is designed to be connected to a bicycle in a first position and to be guided by a user's hand in a second position. The cart (1) is characterized in that the foldable drawbar (3) has a drawbar holder (30) arranged on the frame (10), the drawbar holder (30) being designed with the draw-bar body (33) in the first position and in the second position. The present invention also relates to a cart (1) for use as a bicycle trailer (1) or as a handcart (1) with a frame (10) with a pair of wheels (13) and with a loading surface (14) and with a fold-out stand (2).

Abstract: A trailer includes a set of removable castor wheels attached to a rear portion thereof, wherein the castor wheels are oriented to face rearwardly when the trailer is oriented in the traditional horizontal position. This arrangement allows the trailer to be tilted upwardly into a vertical orientation so that it rests on the castor wheels, thus providing an apparatus and method for easily moving and storing trailers more efficiently due to the reduced footprint required for such trailer storage. The castor wheels, in one embodiment, include mounting brackets that may be attached to the trailer using a securing rod, similarly to the mounting mechanisms commonly used for removably attaching trailer hitches into trailer hitch sleeves, thus rendering the castor wheels removable from the trailer when they are not in use for storage purposes.

Abstract: A foldable bicycle trailer has at least two main frames (1,2) disposed symmetrically about a central plane. These are connected by crossbars. The frames (1,2) stand on wheels (21,22) or on any other movable interface on its either side. The crossbars comprise a first element which is substantially flat in unfolded state, having at least two parallel foldable arms (9a, 10a) and a second element which is substantially upright in unfolded stage, also having at least two parallel foldable arms (11a, 12a). The foldable arms (9a, 10a, 11a, 12a) of each of first and second elements are connected by hinges (5, 6, 7,8) for connecting the foldable segments of each foldable arm.

Abstract: A system for mounting a ventilator on a wheelchair is provided. The system comprises a first member and a second member. The first member is configured to be releasably fastened to the wheelchair. The first member comprises a first coupler structure. The second member is coupled with the ventilator. The second member comprises a second coupler structure that is configured to be releasably coupled with the first coupler structure to mount the ventilator on the wheelchair.

Abstract: A foldable frame structure for trailer so designed that the distance between the pivot connection center of each pivot holder and the left/right side frame and the topmost edge of the left/right frame bar of the bottom frame is greater than the distance obtained by deducting the width of the collapsed bottom frame from the height from the left/right frame bar of the bottom frame to the topmost edge of the left/right side frame. Thus, the left side frame and the right side frame can be individually collapsed and closely attached to the bottom frame in one step. The present invention can greatly save the transportation volume and simplify the folding structure and folding action, and thus achieve the purpose of user's convenient collection and carrying.

Abstract: The present invention relates to a telescoping and foldable electric vehicle, belonging to the field of traffic tools, comprising a front frame (1), a rear frame (2), a power supply and a controller, and also comprising a foldable pedal (3) and a locking assembly (4) for locking the front frame (1) and the rear frame (2), wherein the front frame (1) and the rear frame (2) are in a sliding connection, the front frame (1) is equipped with a front seat (1-1), and the rear frame (2) is equipped with a rear seat (2-1); the front frame (1) is equipped with a front fork (1-2); the front fork (1-2) is equipped with a front wheel (1-3); the rear frame (2) is equipped with a rear bridge (2-1); the rear bridge (2-1) is equipped with rear wheels (2-2); the rear bridge (2-1) is provided with a driving motor (2-3); and the foldable pedal (3) is arranged between the front frame (1) and the rear frame (2).

Abstract: Systems and methods for transporting quarry. One apparatus includes a basket with webbing and a pair of handles, a coupler, and a stabilizer. The basket couples to the rear of a vehicle via the coupler and, optionally, a stabilizer installed on the vehicle. The method includes placing the basket into a substantially horizontal position, loading the basket with quarry, fixing the quarry into the basket via webbing, rotating the basket as needed to place the quarry in the proper position, and raising the quarry to a substantially vertical position relative to the back of the vehicle, optionally using the handles for leverage. Once positioned, the basket may be locked in place in a position in which the quarry is not in contact with the vehicle. The bagged game does not rest on the vehicle but remains in the basket in the vertical position behind the vehicle.

Abstract: A trailer-coupling assembly is described for securing a trailer to a two-wheel vehicle. The trailer-coupling assembly is rigidly fixed to a rear-wheel frame of a two-wheel vehicle and the utility bed of a trailer. The trailer-coupling assembly is comprised of three joints that each rotate about three separate cardinal axes, permitting the trailer to navigate rough terrain without transferring rotational loading to the two-wheel vehicle. Each joint is configured to rotate at least 90 degrees in a clockwise direction and an anti-clockwise direction about a cardinal axis, providing the trailer-coupling assembly with flexibility to navigate the two-wheel vehicle and trailer over various grades of rough terrain.

Abstract: A bicycle seat recline adjusts the incline of a bicycle trailer seat back. The seat recline can comprise opposed gear racks engaged by gears at opposite ends of a cross member. The cross member is coupled to an upper portion of the seat back. Moving the cross member moves the gears in the gear racks and adjusts the angle of the seat back. The cross member is desirably selectively and simultaneously lockable to and releasable from any one of a plurality of positions along the gear rack. A lower portion of the seat back can pivot about a lower pivot axis. The gear racks can be arced to maintain a constant distance to the lower pivot axis as the cross member is moved and maintains a constant tension on the seat back. A plurality of seats with adjustable seat back reclines can be included in the bicycle trailer.

Abstract: A tow bar assembly detachably attaches a trailer to a bicycle. The tow bar assembly has a first end having a bicycle hitch adapted to detachably attach to a bicycle, a second end having a swiveling mechanism and a connection member adapted to connect to a trailer, and an intermediate portion connecting the first end to the second end. The swiveling mechanism allows the connection member to rotate relative to a non-rotatable portion of the second end, the rotation being about a second end axis that extends in the forward direction. The swiveling mechanism limits rotation to 10 degrees. When detached from the bicycle the first end can be grasped by a user so the trailer can be used as a cart.

Abstract: A bicycle trailer can easily be mounted to and dismounted from a bicycle seat post without requiring the use of tools. Pivotally interconnected first, second and at least one intermediate, segments are positioned around the seat post when the hitch is mounted thereto. A latch detachedly couples free end portions of the first and second segments together. A pivot for coupling to the towing arm of a bicycle trailer is coupled to one of the segments. Desirably the latch is capable of adjusting the distance between the free end portions to accommodate seat posts of different diameters. Cushions can project inwardly from the segments and into engagement with a seat post to which the hitch is mounted.

Abstract: A bicycle trailer latch comprises a skewer engaging surface that is desirably at least in part spherical, such as hemispherical. When engaging a bicycle skewer at the rear wheel of a bicycle, the spherical engagement surface allows more freedom of movement of the bicycle trailer relative to the skewer during towing. This enhances the trailers ability to track the movement of the bicycle. The latch can comprise a housing with a housing opening sized to receive the end portion of the bicycle wheel skewer. A stop inside the housing is pivotal to stop closed and stop open positions. In the stop closed position, the housing opening is sufficiently to block the decoupling of the latch from bicycle skewer. In the stop open position, the stop opens the housing opening sufficiently to permit passage of the end portion of the skewer through the housing opening.

Abstract: Implementations of bicycle trailers may include a first end and a second end, the second end opposite the first end, a first plurality of latches coupled to the first end, and a second plurality of latches coupled to the second end. The first plurality of latches may be configured to secure a rear-facing child's car seat facing the first end. The second plurality of latches may be configured to secure the rear-facing child's car seat facing the second end. The second plurality of latches may be configured to secure a front-facing child's car seat facing the first end.

Abstract: A child transport carrier includes an upper frame member having a forward end and a rear end and a rear frame coupled to the upper frame member. The rear frame includes a lower rear frame member, an upper rear frame member having an upper end fixedly coupled to the rear end of the upper frame member, and a first joint assembly coupling the lower rear frame member and the upper rear frame member. The rear frame is configured to fold between an unfolded in-use position and a folded storage position. The upper frame member and the upper rear frame member are fixed relative to each other. The first joint assembly is disposed longitudinally rearward of the forward end of the upper frame member and longitudinally forward of the rear end of the upper frame member in the unfolded in-use position.

Abstract: A bicycle skewer for supporting a wheel of a bicycle between bicycle forks on opposite sides of the supported bicycle wheel comprises a skewer body having first and second end portions and a longitudinal axis about which a supported bicycle wheel pivots. In accordance with an embodiment, a first coupler is coupled to the first end portion of the skewer body and a second coupler is coupled to the second end portion of the skewer body; the bicycle wheel and forks being positioned between the first and second couplers. In addition, each of the first and second couplers comprise exterior surfaces at least a portion of which are spherical.

Abstract: An apparatus for transporting a wheeled case, such as an article of luggage, utilizing a belt with a connector to secure the wheeled case to the users back is provided. The apparatus may connect the handle of the wheeled case to the user's back and may allow the user to maneuver the wheeled case behind his or herself without further use of their hands.

Abstract: A wheelchair-towable article, such as a luggage article, having a body portion configured for attaching to a wheelchair by a mounting means to dispose the article to the rear of a seat of the wheelchair so as not to be pivotable about a vertical axis with respect to the wheelchair and having a multi-directional roller arrangement for contact with the ground enables a wheelchair user to transport their own luggage, even heavy loads, without assistance and without unbalancing the wheelchair and whilst maintaining full maneuverability of the wheelchair including tight turns and reversing in tight turns.

Abstract: The present invention relates to a sibling board, attachable to a tricycle, for accommodating a child, comprising: (a) a foot board; (b) at least one latch for attaching said sibling board to a tricycle; and (c) at least one rear wheel; wherein said sibling board is connectable to the rear of a tricycle.

Abstract: A bicycle trailer has a frame with a hitch portion that comprises first and second yoke arms with respective first end and second end portions. Skewer engagement latches can be coupled to the second end portions of the yoke arms. The skewer engagement latches can have stops that pivot between stop open and closed positions. In the stop open positions, respective end portions of a bicycle skewer can inserted into or separated from the latches. In the stop closed positions, respective end portions of the bicycle skewer, if positioned in respective latches, are retained coupled to the yoke arms by the latches. The stops are moved between open and closed positions by an actuator, such as by respective cable portions attached to the stop portions. Desirably the actuator simultaneously moves the stops between the open and closed positions. The latches can have skewer engagement surfaces that are least in part spherical.

Abstract: A transport vehicle including one or more accessory connectors for releasably locking one or more vehicle accessories to the transport vehicle. An accessory connector may releasably lock a first accessory within a first slot defined by the accessory connector and a second accessory within a second slot defined by the accessory connector. In some embodiments, the accessory connector may simultaneously releasably lock the first accessory and the second accessory within the first and second slots, respectively. The accessory connectors facilitate simple, quick, and easy attachment and detachment of vehicle accessories so that the transport vehicle may be easily converted between different modes of use.

Abstract: A trailer system includes a chassis defining an axis and having a first section and a second section removably attached to the first section. A wheel assembly is attached to the first section that includes a single wheel and a lift mechanism arranged to raise and lower the chassis relative to the single wheel. A twist compensation mechanism is attached to the chassis and arranged to rotate at least one of the first section and second section about the axis.

Abstract: The present invention relates to a vehicle with foldable double-wheel assembly having two states, one first state as a pedaled tricycle and a second state as a running bike, comprising: a frame; a single-wheel assembly; two pedals for driving the steering wheel to roll; a handlebar assembly matching with said single-wheel assembly for control steering; and a double-wheel assembly.

Abstract: A child transport carrier includes a lower frame member having a forward end and a rear end, an upper frame member having a forward end and a rear end, and a rear frame coupling the lower frame member to the upper frame member. The rear frame includes a lower rear frame member having a lower end coupled to the rear end of the lower frame member and an upper rear frame member having an upper end coupled to the rear end of the upper frame member. A first joint assembly couples the lower rear frame member and the upper rear frame member. The rear frame is configured to fold between an unfolded in-use position and a folded storage position. An exterior angle formed by the lower rear frame member and the upper rear frame member is less than 180 degrees in the unfolded in-use position.

Abstract: A frame structure of baby trailer includes a bottom frame including a front frame bar, a rear frame bar, and opposing left and right frame bars respectively pivotally connected between the front and rear frame bars, two -shaped upright support frame bars respectively connected with respective front and rear ends thereof to the bottom frame, and a top transverse frame bar connected between the two upright support frame bars at a top side. The front or rear frame bar of the bottom frame is retractable and can be set between an extended position and a received position and locked in the extended position by a locking device so that the bottom frame can be conveniently and rapidly collapsed through a unilateral operation to reduce the dimension.

Abstract: A juvenile stroller includes a seat, wheels, and a push handle. The push handle is mounted for pivoting movement about an axis relative to the seat. The push handle pivots between a stroller position and a trailer position. Movement of the push handle to the trailer position corresponds to a front wheel or wheels movement to a stowed position.

Abstract: A towing frame for a bicycle includes a tow bar suitable for use with a two-wheeled style bicycle. The towing frame includes a “U”-shaped tow bar with mounting apertures and hardware for connection to a rear frame portions of the bicycle and a rear bracket for attachment of a towed vehicle such as a cart or wagon.

Abstract: An accessory cross bar for a passenger carrier bicycle trailer comprising a bicycle carrier frame with a coupling arrangement at a front end of the frame for coupling of the bicycle trailer to a bicycle and a push-handle at a rear end of the frame. The accessory cross bar is adapted for horizontal mounting at the rear end of the bicycle trailer frame and has a non-circular cross-section.

Abstract: A trailer mounting system includes a left arm, a right arm, a left side mounting device, a right side mounting device, and a trailer mounting device. The left side mounting device mounts to the left arm and to a left seat stay that mounts between a left side of a axle of a back wheel of a vehicle and a seat tube of the vehicle. The right side mounting device mounts to the right arm and to a right seat stay that mounts between a right side of the axle and the seat tube. The trailer mounting device mounts between the left arm and the right arm and is configured to mount to a trailer. The left side mounting device, the right side mounting device, and the trailer mounting device are mounted to rotate parallel to a direction of rotation of the axle of the back wheel of the vehicle.

Abstract: The carrier vehicle includes a coaxial two-wheel vehicle including two wheels arranged on the same axial centerline, a cart, and a coupling mechanism to couple the coaxial two-wheel vehicle to the cart. The coupling mechanism 4 includes a roll rotation tolerance portion that tolerates, when a traveling direction of the coaxial two-wheel vehicle is defined as a roll axis, rotation of the coaxial two-wheel vehicle in a roll direction. Further, the coupling mechanism includes a pitch rotation tolerance portion that tolerates, when a left-and-right direction of the coaxial two-wheel vehicle is defined as a pitch axis, rotation of the coaxial two-wheel vehicle in a pitch direction.

Abstract: A game cart bicycle attachment device is provided that is configured to secure the handle end of a wheeled game cart to the seat post of a bicycle. The device comprises an elongated and angled member that attaches at a first end to the bicycle seat post and at a second end to a game cart. The second end comprises a T-shaped connection, whereby a lateral attachment bar attaches to opposing sides of the game cart and the angled member connects at a third location. The angled member includes a telescoping structure to offset the game cart, while furthermore the lateral attachment bar is telescopically adjustable to accommodate different game cart sizes. The ends of the lateral attachment bar include U-shaped clevises, while a third clevis is adjustably disposed along the angled member. The device therefore attaches to the game cart at three distinct locations along its U-shaped handle.

Abstract: A drawbar apparatus for a cart, wagon or trailer. The drawbar apparatus includes a shaft having a first end suitable for connection to a cart, and a second end including a hitch coupling. The drawbar includes a handle member having a handle first end and a handle second end. The handle first end is pivotally connected to the shaft, and the handle second end includes a grip or gripping region. The handle member is selectively pivotal between a first position and a second position, the hitch coupling extending distally beyond the handle member in the first position, and the handle member extending distally beyond the hitch coupling in the second position. Some embodiments further include a lock configured to selectively secure the handle member when the handle member is in the first position and the second position.

Abstract: A collapsible trailer for exercising or transporting an animal. The trailer is attachable to a vehicle, such as a bicycle, and features a floor capable of retracting into a running position where an animal is able to run on the ground and deploying into a riding position where an animal can ride without having to exert itself. The trailer is further capable of collapsing utilizing hinged connections between trailer sides in order to have the trailer fold flat to occupy a reduced floor area.

Abstract: A combination structure of a cart and a bicycle comprises a bicycle formed mainly by a backbone, a handle, a front wheel and a rear wheel; the handle, the front wheel and the rear wheel being combined to respective positions of the bicycle; a cart formed by a backbone, at least one front wheel, at least one rear wheels and at least one pushing rod; the cart being extended with at least one pushing rod; wherein a user can hold the pushing rods to rotate the at least one front wheel and the rear wheel so as to drive the cart to move forwards; and a hook extending from the cart for hooking the handle of the bicycle. The a cart may be combined to a bicycle directly or indirectly so that enabled old people or child, or expensive goods can be transferred easily.

Abstract: A bicycle trailer that is foldable into a small storable position that expands to include a bicycle trailer that can be configured to convert into a lounge chair, a dolly, a baby bed with or without a canopy, a table or a wagon using an improved tow bar and trailer hitch that easily attaches and detaches to a bicycle as desired.

Abstract: A wheel suspension is provided for a non-motorized vehicle, in particular a pram or a bicycle trailer designed to transport children, which features a chassis (1) and at least two wheels (8), which are each mounted on a wheel swing arm (11, 15). For each wheel swing arm (11, 15) at least one elastic element (21) is provided, whereby the wheel swing arm (11, 15) supports itself via the chassis (1). In order to provide a wheel suspension of this kind which is based on a simple construction and enables an optimum level of suspension and shock-absorption for the non-motorized vehicle: (a.) the elastic element (21) is made of at least one dimensionally stable flexible polyurethane foam material, and/or (b.) both wheel swing arms (11, 15) protrude laterally over the chassis (1) and can be pivoted past a lateral frame section (3, 4) of the chassis (1).

Abstract: A combination structure of a cart and a bicycle comprises a bicycle formed mainly by a backbone, a handle, a front wheel and a rear wheel; the handle, the front wheel and the rear wheel being combined to respective positions of the bicycle; a cart formed by a backbone, at least one front wheel, at least one rear wheels and at least one pushing rod; the cart being extended with at least one pushing rod; wherein a user can hold the pushing rods to rotate the at least one front wheel and the rear wheel so as to drive the cart to move forwards; and a hook extending from the cart for hooking the handle of the bicycle. The a cart may be combined to a bicycle directly or indirectly so that enabled old people or child, or expensive goods can be transferred easily.

Abstract: Disclosed is a trailer for attachment to a vehicle. The trailer includes a frame having a first side and a second side that define a bottom area bordered by the first and second sides. Connected to the frame is an attachment arm configured to attach the trailer to the vehicle. At least one floor panel, supported by the frame, is included and is configured to selectively transition between a riding position and a running position. When the floor panel is in its riding position, the trailer is configured to carry and transport an animal. When the floor panel is in its running position, the trailer is configured to exercise the animal such that the animal is free to move under its own power in connection with the vehicle as the vehicle moves.

Abstract: A retractable frame structure for tandem trailer includes a bottom frame, which allows adjustment between an extended position for two-seat seating arrangement in a fore-to-aft manner and a retracted position for one-seat seating arrangement, a front frame and a rear frame detachably coupled together and respectively pivotally connected to the front and rear sides of the bottom frame for allowing collapsing of the tandem trailer to reduce space occupation when the tandem trailer is not in use, two wheel brackets respectively bilaterally mounted at the rear side of the bottom frame for supporting a respective wheel, and a trailer bar pivotally connected to one lateral side of the bottom frame for coupling to a bicycle.

Abstract: Disclosed is an antilock braking system for trailers equipped with electric brakes. A control module captures wheel speed data, analyzes it, and determines if wheel slip is occurring. Braking signal to the trailer wheels is reduced using pulse width modulation techniques to reduce the braking force as necessary to eliminate wheel slip. A particular system uses a central microprocessor, two hall-effect speed sensors, and three solid state relays for isolation and control. The ABS works in conjunction with an existing trailer brake controller installed in the tow vehicle.

Abstract: A bicycle tow hitch comprises an apparatus to enable a master bicycle to tow a slave bicycle behind it. The apparatus comprises a plurality of tubular members which make up a master unit and a slave unit being joined using a plurality of bolts. The slave unit is installed onto the front wheel of the slave bicycle and prevents the front wheel of the slave bicycle from rotating. The master unit is installed onto the rear portion of the master bicycle and supports the slave unit in a way that suspends the front wheel of the slave bicycle above the ground while leaving the rear wheel of the slave bicycle in contact with the ground.

Abstract: The present invention generally relates to a trailer for attachment to a bicycle. The trailer is designed such that when the trailer is decoupled from the bicycle, the trailer can stand without tipping over. Additionally, the coupling assembly used for coupling the trailer to the bicycle, together with the handle assembly, can collectively pivot about the trailer frame to permit the trailer to be easily maneuvered by the rider once the trailer has been decoupled from the bicycle.

Abstract: A hitch for connecting a movable object to a rigid rod which includes a semi-rigid main substrate including a plurality of grooves, a flexible element fixedly formed over the main substrate including a first portion for gripping a rigid rod, a clamp connected to the first portion of the flexible element. The clamp includes a lever that couples the clamp to at least one of the plurality of grooves of the main substrate such that the first portion can grip the rigid rod.

Abstract: A mobile treadmill and a method for powering the mobile treadmill are disclosed. The mobile treadmill includes a trailer, a conveyor, a drive system, and a disconnect. Further, the mobile treadmill is powered by its linear movement on the ground. When the mobile treadmill is moved, wheels on the trailer rotate. The drive system is coupled to one of the wheels and transfers the power from the rotation of the wheel to the conveyor.