Abstract: A bicycle frame set comprising a main frame and a rear wheel suspension system. The rear wheel suspension system comprises a first link member with an upper end pivotally connected to a seat tube of the main frame at a link pivot point located rearward of an axis extending between a bottom bracket of the main frame and an intersection of the seat tube and a top tube of the main frame. The first link member has a displaceable lower end pivotable about the link pivot point. The swing-arm is pivotally interconnected with the main frame proximate the bottom bracket and has a rearward end adapted to engage a rear wheel axle. The swing-arm is pivotally connected with the first link member at a point thereon intermediate the upper and lower ends. A shock absorber is affixed between the main frame and the lower end of the first link member.

Abstract: In a power steering system employing a power cylinder for steering assistance, hydraulic pressure is supplied through a pair of fluid lines to respective hydraulic chambers of the power cylinder. Check valves are provided to charge a hydraulic pressure in a communicating circuit intercommunicating the two fluid lines. Also provided is a solenoid-actuated directional control valve for relieving the hydraulic pressure charged in presence of a power steering system failure. An opening of the directional control valve varies depending on a solenoid attracting force and a pressure differential between the hydraulic pressure in the communicating circuit and hydraulic pressure in a reservoir. A relatively low exciting current is applied to the solenoid when the hydraulic pressure charged exceeds a predetermined pressure value. A relatively high exciting current is applied to the solenoid when the hydraulic pressure charged is less than or equal to the predetermined pressure value.

Abstract: A motor-driven power steering system includes a power assisting motor; a motor current sensor, a sample-hold circuit that has sampling section and a holding section, a timing signal generating circuit that generates a timing signal to activate either the sampling section or the holding section and an alarming unit that generates an abnormality signal if the timing signal is not detected for a prescribed period.

Abstract: An auxiliary power system for a bicycle having a motor (10) attached to the bicycle flame (22) by thin clamps (30), which can be arranged in a variety of positions to avoid disturbing the control cables. Power is delivered on demand via a sprocket driving a single freewheel (180) attached to a modified left crank (200). The gearbox (20) may be attached to the frame by means of a quick-release system. A bushing (600), (700), (820) may be used instead of a modified as a means of mounting the freewheel to the crank axle. (720), (610), (850b). To prevent accidental simultaneous braking and triggering, triggering the system is accomplished by placing the trigger switch (430) so that the rider's fingers must disengage the brake in order to engage the motor. Accidental triggering may be prevented by placing a trigger switch on each handle and wiring them in series so that both switches must be engaged to obtain power.

Abstract: A hitch alignment apparatus is provided for mounting on a motor vehicle and a trailer for facilitating the hitching of a motor vehicle to a trailer. The vehicle and trailer mounted hitch alignment apparatus includes a motor-vehicle-mounted trailer alignment unit for attachment to a rear portion of the motor vehicle and includes a trailer-mounted motor vehicle alignment unit for attachment to the front portion of the trailer. When the motor-vehicle-mounted trailer alignment unit and the trailer-mounted motor vehicle alignment unit are in proper registration, the vehicle-mounted trailer ball and the trailer-mounted ball receiver are in alignment and registration to facilitate the interconnection therebetween. Each of the motor-vehicle-mounted trailer alignment unit and the trailer-mounted motor vehicle alignment unit includes respective adjustable-length riser portions that facilitate efficient adjustment of and use of the alignment apparatus.

Abstract: The invention relates to improvements in or relating to wheelchair wheels. More particularly, the invention relates to a more ergonomically designed wheelchair wheel, and also relates to a method of manufacturing such a wheelchair wheel.

Abstract: A scooter includes a main body, a rear wheel mounted on a rear end of the main body, and an operation mechanism mounted on the main body and connected to the rear wheel to move the rear wheel. When in use, the rider steps on the two pedals to move the scooter forward manually. Alternatively, the scooter is moved forward automatically by operation of the motor. Thus, the scooter is operated manually by the user's feet or operated automatically by an electric power. In addition, the operation mechanism is detachably mounted on the main body, thereby facilitating the rider using and folding the scooter.

Abstract: The invention provides an apparatus for alignment of a trailer hitch with a trailer tongue, so that the operator does not leave the cab of the towing vehicle in order to facilitate the alignment. The system may comprise a control assembly and a remote assembly, the control assembly further comprising a display unit and a receiver, and the remote assembly further comprising a video camera, a transmitter, and a light. The remote system may be removably attached to the rear end of the towing vehicle and positioned to provide a vertical view of the hitch area, and the control assembly may be removably attached to a surface within the cab. The transmitter provides a wireless video signal of the hitch area for reception by the receiver and subsequent display on the display unit. Power for the system may be provided by batteries, and in the case of the remote assembly, a plug adaptable for attachment to the standard cable socket for trailer braking and lights.

Abstract: An wheelbarrow attachment for a typical wheelbarrow, the attachment removably fitting over the lip and bucket of the back of the wheelbarrow and therefrom extending upward and backward from the rear of the bucket. The u-channels fitting the bucket are connectively braced. Inner uprights attach to the u-channels and are adjustably fitted for height, and fore and aft adjustment of a padded cross plate connecting the inner uprights. A user braces and pushes with his/her body, offering greater force for propelling the wheelbarrow and greater stability in handling a loaded wheelbarrow.

Abstract: A patient support including a propulsion device for moving the patient support. The patient support includes a propulsion system having a propulsion device operably coupled to an input system.

Abstract: A vehicle frame structure includes a pair of main frames, one of the pair of frames extending on left side of a vehicle, and the other on the right side, from the head pipe rearwards in an overall sealed cross sectional structure. At least a portion of each main frame includes a frame upper stage and a frame lower stage, each stage made up of a closed, sealed cross sectional structure. At least a portion of each main frame further includes an outer plate and an inner plate joined into an integrated piece with the frame upper stage and the frame lower stage. The plates are installed so as to extend over both sides of the frame upper stage and the frame lower stage. The frame structure provides a well-balanced high-strength main frame, and high strength in portions which join the main frame and head pipe.

Abstract: A roller system for moving a load a predetermined distance includes a chock frame having a pair of spaced chocks connected between a pair of rigid siderails and a freely moveable roller unit. The roller unit includes a plurality of rollers and is positioned between the siderails and freely moveable between the pair of spaced chocks. The load may then be moved in inchmeal fashion by slowly advancing the roller unit while shuffling the chock frame on the ground at a similar pace.

Abstract: A trailer hitch assembly includes a controller mounted within a vehicle cab and electrically coupled to a power supply source of the vehicle. A trailer hitch tongue section is attachable to the vehicle and provided with an elongated chamber. The tongue section has opposed end portions defining a socket and an opening. An adaptable ram includes displaceable support arms engaged within the chamber. The support arms are upwardly spaced from a ground surface. The assembly further includes a trailer for receiving and supporting a boat. The trailer is provided with wheels and a front end portion attached to the ram. An auxiliary anchor beam vertically traverses one of the support arms and is provided with end portions situated above and below one support arm. A mechanism is included for telescopically adapting the support arms such that a spatial distance between the vehicle and the boat can be biased.

Abstract: The invention relates to a bicycle adjusting device, in particular an adjusting device for adjusting the height of the front wheel suspension, the rear wheel suspension, the saddle or of the steering mechanism of a bicycle, e.g. of a mountain bike, a bicycle with at least one bicycle adjustment device, as well as a bicycle-steering head bearing system, whereby the adjustment has at least one double-acting piston-cylinder assembly with a first cylinder space (14a, 34a) and a second cylinder space (15a, 35a) in each case, and whereby the two cylinder spaces of the two adjustment devices are interconnectable by means of a fluid duct fitted for that purpose.

Abstract: The invention contemplates a selectably operable hydraulic means for laterally shifting one end of a non-moving vehicle in order to provide a desired alignment. The present invention is particularly applicable to vehicle-mounted equipment which has an invariant lateral mounting position on the vehicle and which must be laterally aligned with a stationary workpiece axis. An example of such a need occurs with mobile workover rigs used in well maintenance.

Abstract: The invention relates to a motorcycle comprising a frame, in which at least an engine is mounted; a front fork pivoted to the frame, in which at least a front wheel is mounted; a rear fork pivoted to the frame, in which at least a rear wheel to be driven by the engine is mounted; as well as a spring system connected to the rear fork and to the frame, wherein the spring system is arranged for exerting forces on the frame in a forward direction substantially parallel to the direction of movement of the motorcycle.

Abstract: A front suspension (1) for a motorcycle, includes a fork (2) with a headstock (8), a sliding unit (3) that slides on the fork (2) in a substantially vertical direction, the unit (3) in turn supporting the motorcycle wheel (4), and an elastic shock absorbing assembly (5) acting on the sliding unit (3). The assembly (5) is centrally mounted within the headstock (8) and is connected to the latter by a quick-release connection (9) so that the assembly (5) can be easily removed directly from the top or bottom of the headstock (8).

Abstract: A power steering system includes a reversible-type oil pump supplying hydraulic fluid to first and second pressure chambers of a hydraulic power cylinder through first and second passages and having first and second discharge ports, and a branch passage conveying part of hydraulic fluid discharged from the discharge ports of the oil pump to the outside of the pressure chambers of the power cylinder, wherein the branch passage has a passage sectional area greater than a total leak sectional area of the oil pump.

Abstract: A transporter for transporting a subject over a surface that may be irregular. The transporter includes a support platform for supporting a load, the loaded support platform defining fore-aft and lateral planes and characterized by a load distribution. A plurality of ground contacting elements are coupled to the support platform such that the transporter is statically stable with respect to tipping in the fore-aft plane. At least one of the plurality of ground contacting elements is driven by a motorized drive arrangement. A sensor module generates a signal indicative of the load distribution. Based at least on the load distribution, a controller commands the motorized drive arrangement.

Abstract: The mower has at least two independently driven wheels that are each capable of bi-directional rotation. The at least two wheels are independently driven so that operation of the at least two wheels causes the at least two wheels to independently rotate which propels and steers the mower. A microprocessor controls the operation of the at least two wheels in accordance with signals received by the microprocessor. The mower has at least one controller. The at least one controller sends signals to the microprocessor that the microprocessor uses to control the operation of the at least two wheels. The operation of the at least one controller causes the at least two wheels to propel and steer the mower.