Abstract: The invention relates to an electric propulsion unit (10) and torque transmission group (11) for operating the rear wheel (13) of an electric scooter (1) with body (2) of the step-through type and with upright sitting portion (6). The electric propulsion unit (10) comprises at least one synchronous electric motor (30) of the type comprising internal stator (32) and external rotor (29) with a cup-shaped form rotating on a fixed shaft (33) rigid with the stator (32); the motor is installed in a barycentric position substantially at the base of the upright sitting portion (6) with the fixed shaft (33) transverse to the longitudinal axis (X-X) of the scooter (2), and the transmission group (11) comprises at least one first and one second reduction stage (24, 26).

Abstract: A special hitch insert, adapted to receive a rolling cart, can be inserted into a standard vehicle hitch. The hitch insert allows the cart to be loaded at ground level, rolled to the rear of the vehicle, and secured to the hitch insert by using the cart as a lever to raise the cart and lock it onto the hitch insert at the level of the receiving hitch.

Abstract: The present invention discloses a tricycle having two riding modes, the tricycle comprising: a frame, a single-wheel assembly and a first handlebar mounting base that are disposed at one longitudinal end of the frame, a double-wheel assembly and a second handlebar mounting base that are disposed at the other longitudinal end of the frame, a transmission mechanism disposed between the second handlebar mounting base and the first handlebar mounting base, and a handlebar assembly selectively disposed on the first handlebar mounting base or the second handlebar mounting base, the single-wheel assembly comprising a steering wheel and a first pedal for driving the steering wheel to roll, the double-wheel assembly comprising two wheels widthwise spaced apart and a second pedal for driving the two wheels to roll. The tricycle has a first riding mode with single front wheel and double rear wheels and a second riding mode with double front wheels and single rear wheel.

Abstract: A compact drive assembly for a wheeled transporter, illustrated as a wheelchair, and method convert reciprocating input forces applied by oppositely-directed essentially linear strokes to a drive shaft journaled for rotation in opposite directions of rotation about a central axis of rotation within the drive assembly, into rotation of a drive wheel of the transporter in a given single direction of rotation. Oppositely oriented clutches couple the drive shaft with respective sun gears. Sets of planet gears are engaged with corresponding ones of the sun gears and are overlapped for engagement with one-another. One of the sun gears is coupled to the drive wheel such that upon rotation of the drive shaft alternately in the first direction and the second direction in response to the oppositely-directed strokes, the drive wheel is rotated in the same given single direction of rotation during each direction of rotation of the drive shaft.

Abstract: A chair assembly includes a chair portion and an armrest portion coupled to the chair portion movable between an upright position and an extended position. The armrest portion includes a body. A support is attached to the body disposed adjacent to the seat. In the upright position, the support is disposed generally perpendicular to the seat. In the extended position, the support is disposed generally parallel to the seat. A structure includes a rod being pivotably attached to the support. The structure also includes a brace pivotably attached to the rod and the chair portion movable between a storage position and a load bearing position. In the storage position, the rod is disposed generally parallel to the support with the armrest portion in the upright position. In the load bearing position, the rod is disposed generally perpendicular to the support with the armrest portion in the extended position.

Abstract: A hitch ball assembly generally includes a ball member and a body connected to the ball member. A passageway extends longitudinally within the body and at least one locking member may be in communication with the passageway to lock the hitch ball in place. An elongated member within the passageway is biased to engage the locking member. The body further includes an opening arranged transverse to the passageway. A release mechanism is positioned within an opening in the body transverse to the passageway. The release member is in communication with the elongated member to move the elongated member between a locked position and an unlocked position.

Abstract: A cart is provided for a watercraft including at least two apertures provided therein. the cart includes a transportation portion, and a carrying portion. The carrying portion includes at least two vertical shafts protruding from the transportation portion. The protruding end of each shaft is connected to, or received within, a watercraft engaging portion that tapers off in size as it extends further away from the transportation portion such that at least a section of each watercraft engaging portion deforms and compresses when received within one of the at least two apertures to create frictional engagement between the aperture and the section of the watercraft engaging portion.

Abstract: The pedal-operated scooter is a scooter with a plurality of wheels, which are further defined as including at least one rear wheel and at least one front wheel. The at least one rear wheel is in mechanical connection with a drive sprocket that is in mechanical connection with a pedal sprocket. The pedal sprocket is in mechanical connection with a pair of pedals provided on the scooter. The pair of pedals are able to be manipulated via a rider in order to propel the scooter. Moreover, rotation of the pair of pedals, rotates the pedal sprocket that is attached to the drive sprocket via a chain or belt. The drive sprocket in turn drives the at least one rear wheel. The scooter includes a handlebar, and a seat.

Abstract: A snowmobile rear suspension assembly has a pair of slide rails and at least one suspension arm pivotally connected thereto and adapted to be pivotally connected to a tunnel. A shock absorber is adapted to be pivotally connected between the tunnel and the slide rails. A limiter strap, adapted to extend between the tunnel and the slide rails, is substantially inextensible to limit separation therebetween. A strap holder, connected between an end of the limiter strap and the slide rails or the tunnel when the at least one suspension arm is connected to the tunnel, is moveable between a first and a second strap holder position. A position of the end of the limiter strap, relative to the slide rails or the tunnel, is different in the first strap holder position compared to the second strap holder position. A method of adjusting the limiter strap is also disclosed.

Abstract: An agricultural tractor includes a pair of track assemblies including rubber treads with track bars, a front wheel assembly and a controller. The track assemblies are interconnected by respective front and rear axles extending substantially perpendicular to a direction of travel. The controller automatically controls a load imposed on the front wheel assembly in order to control the load imposed at the front axle of the track assemblies to minimize rubber tread wear.

Abstract: A bicycle frame includes a substantially rigid front frame portion and a substantially rigid rear frame portion. A link is connected to the rear frame portion by a first pivot and to the front frame portion by a second pivot. A frame segment is rigidly connected at a first end to one of the rear frame portion and the front frame portion and pivotably connected at a second end to other of the rear frame portion or the front frame portion by a third pivot. The frame segment is flexible parallel to an axis of the third pivot.

Abstract: The invention relates to track systems 14, 14? that may be used to convert steerable, all-wheel drive construction equipment to steerable, multi-track construction vehicles 10. A preferred embodiment of the track system 14, 14? includes a frame 60, 182 having a reinforcing enclosure 150, 230, a plurality of track engaging rollers 82-86, 202-206, a sprocket 102, 214, and an endless track 76, 198 operatively connected to the frame 60, 182. Tension on the endless track 76, 198 is maintained with two tensioning members 170, 244 operatively connected to the forwardmost roller 82, 202. The track system 14, 14? preferably includes a limiting apparatus 300 that is configured to restrict the rotational movement “r” of the frame 60, 182 relative to a vehicle axle 16 to which it is attached. The limiting apparatus 300 has a first component 40, which is associated with the vehicle axle 16, is configured and arranged to interact with a second component 262, which is associated with the frame of the track system 14, 14?.

Abstract: A fibrous composite frame includes at least one frame unit. The frame unit has two components and at least one shaft formed by combining the two components. Each of the components has a foam core that is made of a foam material and a fiber composite outer layer that wraps the foam core from outside and is made of a fiber composite material. The fiber composite outer layer has a combining surface, and the two components are such fixedly combined at the combining surfaces of the fiber composite outer layers that the two components are substantially symmetrical about where the two components are combined. Thereby, the fiber composite bicycle frame is lightweight, unlikely to break and easy to produce. Also, the fiber composite material is more likely to be set compactly.

Abstract: A saddle type vehicle including a frame of a monocoque structure having an air cleaner wherein the sealing property can be secured. An air cleaner includes a filter element disposed in a hollow main frame to partition the main frame into a dirty side region and a clean side region. An intake path member connects an engine below the main frame to the clean side region. A communicating opening for communicating with the engine is formed on a lower face side of the clean side region. The communicating opening is covered with a lid member. The lid member includes a first plate member with a communicating hole in which the intake path member to the engine is inserted, a second plate member for surrounding an outer periphery of the first plate member, and an elastic member provided between the first plate member and the second plate member.

Abstract: A suspension assembly adapted for use in a snowmobile having a closed-loop track includes at least one ground contact engaged with the closed-loop track. An elongated swing arm is angularly disposed in the closed-loop track and extends between a front end portion adapted to be coupled to the chassis, and a rear end portion coupled to the at least one ground contact. A front resilient member is disposed in the closed-loop track and has an upper end pivotably coupled to the front end portion of the swing arm, and a lower end pivotably coupled to the at least one ground contact. A rear resilient member is disposed in the closed-loop track and has an upper end adapted to be pivotally coupled to the chassis, and a lower end pivotally coupled to the at least one ground contact. A pivot arrangement is connected to the swing arm for permitting at least rotation of the swing arm about a pivot axis extending longitudinally of the at least one ground contact.

Abstract: A drive train having a locking differential and a control unit for controlling operation of the locking differential. The control unit is responsive to selected vehicle characteristics to sua sponte activate or inactivate a locking mechanism of the locking differential to cause the locking differential to operate in a locked manner or an unlocked manner, respectively. A method for operating a locking differential is also provided. The method includes: utilizing only preselected vehicle criteria indicative of the operational state of the vehicle to identify a situation in which a locking mechanism associated with the locking differential is to be energized; and responsively energizing the locking mechanism.

Abstract: An expandable trailer vehicle is provided. The trailer vehicle comprises a wheeled vehicle frame that is adapted to be towed by a towing vehicle. The vehicle frame supports an expandable trailer structure having a front and rear wall, a floor, and a roof. The trailer structure includes expandable sections from the sides thereof, whereby a pair of L-shaped expandable side sections pivots outward from the sides of the trailer structure and form the floor and outer walls when deployed. Pivoting sidewalls pivot forward and rearward from the sides of the trailer structure to form the front and rear walls of the expanded section, closing out the L-shaped side sections when in a deployed state. A pair of side section roof surfaces extends from the roof of the trailer vehicle to close off the upper surface of the L-shaped side sections when in a deployed state.

Abstract: A motor power device for wheelchairs of disabled users is removably mounted on the front of the wheelchair-in order to be controlled by the user while sitting on the wheelchair. The device has a motor unit provided with an electrical motor, an intermediate frame disposed between the motor unit and the wheelchair, first inclination adjusting means between the motor unit and the intermediate frame and second inclination adjusting means between the intermediate frame and a bearing frame of the wheelchair. The intermediate frame and the motor unit are mounted and dismounted easily and rapidly.

Abstract: A hitch device for a trailer mount is provided. The hitch device includes a mounting portion, a receiver sleeve receiving the mounting portion, wherein the receiver sleeve includes a cross-section having a quadrilateral shape. In one aspect, the mounting portion includes a plurality of walls, wherein each of the walls projects towards internal corners of the receiver sleeve. In another aspect, the walls includes a concave portion and a convex portion. In yet another aspect, a center distance between each of first center portions of a first pair of opposing walls is less than an edge distance between each of two first edge portions, and a second center distance between each of second center portions of a second pair of opposing walls is less than a second edge distance between each of two second edge portions.

Abstract: A nut is formed by a die forging process in which a die used for the die forging process is released in a direction along the direction of the axis of rotation of the nut.