Abstract: A motor vehicle with a riding saddle includes front and rear wheels, an engine, a front wheel steering device for steering the front wheel, a frame having an integral head pipe supporting the front wheel steering device, a rear fork having a front end pivotally mounted on the frame and a rear end supporting the rear wheel, and a cushioning unit having a front end pivotally coupled to the frame and a rear end coupled to the rear fork for relative angular movement. The cushioning unit extends substantially parallel to a longitudinal central axis of the motor vehicle an is displaced laterally from the longitudinal central axis, leaving a space on one side of the cushioning unit. The motor vehicle also includes accessories disposed in the space on one side of the cushioning unit. The frame includes main and down tubes extending downwardly and rearwardly from the upper and lower portions, respectively, of the head pipe. Each of the main and down tubes is composed of a pair of laterally spaced members.

Abstract: A ski comprising a ski body component (1) and a trough (2). The ski body component is a prefabricated component which is formed from a core (3), steel edges (6 and 6', respectively), a running surface coating (7) and possible intermediate layers. To produce the ski, the prefabricated ski body component (1) is introduced into a trough-shaped mould (9), a space being left free for the production of the trough, whereupon the free space is filled with plastics material, preferably by RTM method. The sole FIGURE serves and the FIGURE for the Abstract.

Abstract: A steering force controller for an automobile power steering device includes a solenoid-operated valve openable and closable by a current applied to a solenoid thereof for controlling a fluid supplied under pressure to a power cylinder for operating steerable wheels, an automobile speed sensor for detecting a speed of travel of the automobile, a steering angle sensor for detecting a steering angle of the steering wheel and issuing a signal indicative of the detected steering angle, a discriminator for determining a running mode of the automobile from a variance of steering angle signals, and a control unit responsive to an output from the discriminator for controlling the current fed to the solenoid dependent on an input signal indicating the automobile speed, according to a respective one of different control patterns.

Abstract: A four wheel drive vehicle including a front inter-wheel differential gear between front drive axles, a rear inter-wheel differential gear between rear drive axles and an inter-axle differential gear between the front and rear drive axles. The vehicle has a transmission arranged with its output axis transversely of the vehicle. The inter-axle differential gear includes two planetary gear sets which are mounted on one of the front drive axles and provided with clutches so that the planetary gear sets are selectively brought into an operative position.

Abstract: A stabilizing wheel assembly has a support frame construction releasably securable to a bicycle and a stabilizing wheel secured to the support frame construction. The latter includes a substantially planar main plate attachable to the bicycle seat stay and the chain stay; a support bar affixed at one of its ends to the main plate and extending generally perpendicularly therefrom; and a fork unit having fork blades straddling the stabilizing wheel and being held on the support bar for a swinging motion in a plane parellel to the main plate. There is further provided an abutting mechansim carried by the support bar and arranged in a path of the swinging motion of one of the fork blades.

Abstract: A trolley base has upright sides, made from frame members and base support members supported on wheels. The upper parts of the sides are slidable in the frame members to give height adjustment. A lifting device comprising an extensible strut, such as a pre-loaded gas strut, mounted in an expansible guide column, is detachably connectible to the base to substantially balance a load on the trolley and allow easy height adjustment with the load in place.

Abstract: A portable table for a wheelchair storable adjacent the frame of the wheelchair. The portable table is attached to the frame of the wheelchair and includes a tilting device for varying the angle of the table top relative to the horizontal. The table top is also slidably connected to the wheelchair frame enabling lateral movement, as well as tilting of the table top relative to the horizontal. The table top includes foldable sections held together by a magnetic retaining device until the sections are separated by the user.

Abstract: An improved pivot joint assembly is provided for use in the frame of a folding wheelchair or the like, wherein the pivot assembly provides a simple yet sturdy pivot interconnection between tubular frame members. The pivot joint assembly comprises a bearing of plastic or the like anchored within an open end of a first tubular frame member and defining an outwardly presented concave bearing seat, preferably of semi-cylindrical shape, for engaging the exterior of a second tubular frame member at a selected position intermediate the length of the second frame member. A strap bracket of generally U-shaped configuration is wrapped about the second frame member and secured by a lock pin or the like to the first frame member and to the bearing to retain the frame members in generally T-shaped relation with the first frame member pivotal about a central axis of the second frame member.

Abstract: A recreational and exercise cycle characterized by a propulsion system which derives its transmission force from the coordinated rowing action of the occupant's body weight, arm force, and foot-leg action comprising rotatable cranks, treadle and seat levers connected to and cranks, and a handle bar-power lever combination connected to a seat.

Abstract: An attachment for a boat trailer to enable a boat carried by the trailer to be raised and stored above the water, the attachment being readily applied to a conventional trailer by the use of relatively simple tools and comprising a pair of extensible legs which are moved from a normal retracted position to an extended position to raise the trailer sufficiently with respect to the water that the boat is supported above the surface of the water.The extensible legs may either be legs which are rocked or legs which are formed of two telescoping parts so that one part of each leg can be moved with respect to the other part to effectively extend the leg.

Abstract: An improved tractor battery enclosure of the type having a service opening, including walls forming an enclosure, a suspended battery-support floor approximating the size of a battery base and movable between a battery use position and an at least partially offset position, and a door along the lead edge of the floor movable between a closed position and an open position coplanar with the floor, such that a battery may readily be moved with the floor and then along the floor to a full service position in which it is at least partially supported by the door.

Abstract: A snowmobile body having an improved seat construction for a snowmobile vehicle having a built-in backrest which is inclined at a small acute angle with respect to the vertical for providing support for the driver in the lumbar and thoracic regions when assuming a slightly reclining disposition. The seat back may be slidably adjustable relative to the frame of the vehicle and the steering wheel or handlebars use to control the front steering skis may also be adjustable to accommodate drivers of differing physical size.

Abstract: The safety ski binding comprises a base plate on which a spring housing for a release spring is mounted for displacement transversely on the longitudinal direction of the ski. Mounted in the spring housing are two hinged jaws laterally engaging a ski boot and rotatably supported about vertical axes.For improving the retention of the ski boot and for facilitating the lateral release in the case of a rearward torsion fall, a U-shaped pivot member is mounted on a transverse axial member in the spring housing and supports a further transverse axial member supporting a catch lever subjected to the action of the release spring to be engaged with a nose of a clamp retainer rotatably mounted about another transverse axial member, which suppports a sole clamp.

Abstract: The present invention creates a cross-country vehicle that is characterized by the combination of two hydraulically operated leg units at the front of the vehicle with two wheels at the rear of the vehicle, it being possible to adjust the height of these wheels, which are supported on longitudinal arms, hydraulically. Motion of the vehicle is effected by appropriate movements made by means of hand levers and amplifiers. An on-board computer automatically provides for a constant and near horizontal position of the vehicle cab and constantly carries out calculations to ensure that when one leg is raised the position of the center of gravity is at that moment within the three support points. The decisive point of the invention lies in the fact that the advantages of leg units are combined with the advantages of wheels. The command of the leg elements is greatly simplified since there are only two such units.

Abstract: A four-wheel steering system in a wheeled vehicle the front wheel steering mechanism of which is drivingly interconnected to a rear wheel steering mechanism to steer the rear road wheels in either the same or the opposite direction as the front road wheels in dependence upon the turn-angle of the steering wheel of the vehicle. In the steering system, the rear wheel steering mechanism includes an operation rod operatively connected at the opposite ends thereof to the rear road wheels, and a connecting mechanism is assembled in combination with the rear wheel steering mechanism for effecting axial displacement of the operation rod in response to operation of the front wheel steering mechanism and for controlling the displacement direction of the operation rod in dependence upon the turn-angle of the steering wheel.

Abstract: A ski binding adapted to releasably hold the front of a ski boot on a ski. The front of the boot includes front-end zone spaced from the lateral edges of the boot. The binding includes a jaw, a support, and a support zone means on the jaw. The jaw is adapted to hold the front of the boot and adapted to laterally pivot in response to pivoting of the boot. The support, which is positioned on the ski, includes two upwardly converging lines of support. The jaw is adapted to laterally pivot around either one of these upwardly converging jaw lines of support. The support zone means which is positioned on the jaw supports the front-end zone of the boot when the boot is held by the jaw. As a result, when the boot experiences a torsional force and a frontward force on the boot, the boot laterally pivots and the front of the boot is pressed downward against the ski and against the support zone means.

Abstract: A rear wheel steering apparatus for a vehicle with hydraulic power steering for the front wheels is disclosed. Pressure sensors detect the hydraulic pressure in the two chambers of a power cylinder for the front wheels. A differential amplifier which is connected to the pressure sensors produces an output signal corresponding to the pressure difference between the chambers. An electric motor for steering the rear wheels is controlled by a control unit in response to the output signal from the differential amplifier and an output signal from a vehicle speed sensor. At high speeds, the rear wheels are steered in the same direction as the front wheels, and at low speeds, they are steered in the opposite direction. When the steering wheel is in a neutral position and a sudden lateral force acts on the vehicle to cause a cornering force to be exerted on the front wheels, the rear wheels are steered in the direction tending to increase the restoring moment acting on the vehicle.

Abstract: A slip control method controls slip of the driving wheels of a vehicle. The method includes detecting excess slip of the driving wheels of the vehicle during acceleration, and reducing a driving force to said driving wheels upon detection of said excess slip in order to limit the slip of the driving wheels. The slip control of said driving wheels is inhibited upon detection of the application of a parking brake of the vehicle, or upon the detection of the transmission of the vehicle as being in the reverse gear position.

Abstract: A propeller shaft in a motor vehicle includes a plurality of shaft members and a plurality of joints operatively coupled between the shaft members, between the engine of the motor vehicle and one of the shaft members, and between a differential coupled to drive wheels and one of the shaft members. At least one of the joints comprises a slidable tripod joint. The tripod joint gives the propeller shaft a desired torque transmission capability and axial sliding displacements, and enables the propeller shaft to have a practically sufficient service life for high-speed rotation.

Abstract: The ski includes a forebody, waist and tail section, with a running surface extending from an upturned front tip to the tail. The ski has sidecuts formed with a continuous, constant radius of curvature along the entire length of the running surface. A ski binding area is provided on the top surface of the ski with the toe of the boot of the ski binding area rearward of the median of the length of the running surface, with the running surface rearward of the heel of the boot providing approximately less than 20% of the total length of the running surface of the ski. A chamber in the front section of the ski is filled with flowable material; and there is also provided concave undersurface toward the tail of the ski.