Abstract: A walker for use with a wheel chair is disclosed. The walker has a generally U-shaped frame with a column swingably attached to the intermediate part of the U-shaped frame. A caster wheel is attached to the distal end of the column and a tube is swingably attached to the distal ends of the U-shaped frame. A pair of brackets are provided by attaching the front side of the wheel chair to the brackets. Each of the brackets has a telescoping pin. Clamps are provided on the tubular brackets which can be attached to the wheel chair and which receive the telescoping pins attached to the U-shaped frame.

Abstract: A pneumatic speed control device for an automotive vehicle that derives its power from a vehicle engine manifold vacuum and is an adaptive control which maintains a constant vehicle speed by means of changing the throttle position due to a deviation from vehicle speed which has been selected by the driver. This device includes a differential control valve for controlling a vacuum signal leading to a bellows actuating the throttle linkage of the vehicle and a speed sensing device including a control valve for a vacuum signal proportional to the vehicle speed and communicating with one side of a diaphragm in the differential control valve; the opposite side of the diaphragm communicating with an accumulator of a fixed volume which receives the vacuum signal from the speed sensing device and is isolated therefrom once the desired cruising speed is reached.

Abstract: Bicycle provided with two drive levers which each carry a pedal at one end and which, by means of a pivot, are connected pivotally about a pivot axis transversely to the riding direction to the bicycle, synchronization coupling means operative between the two levers to force same to execute their pivoting movements synchronously and in opposite rotation sense, there being disposed between each lever and the rear wheel of the bicycle a one-directional coupling for coupling the levers upon their downward pivotal movement for forward bicycle drive with the rear wheel, wherein coupling means, through coacting portions such as enmeshing teeth, couple the levers for the bicycle drive and/or for the synchronous pivotal movement in opposite sense of rotation.

Abstract: Inflatable air bag having one or several air intake openings for drawing air from the passenger compartment into the air bag, and closure means for automatically sealing the air intake openings after inflation of the air bag. The closure means may consist of bands, tubes, flaps and the like.

Abstract: A coupling assembly adapted for releasably connecting a sidecar to a motorcycle includes a first coupling member attached to the motorcycle and having a ball-shaped portion with a first lateral dimension adjacent to second portions with a second lateral dimension greater than the first lateral dimension. A second coupling member is attached to the sidecar and has a bell-shaped configuration. Retaining means for engaging the ball-shaped portion of the first coupling member includes a plurality of fingers resiliently expandable to the second lateral dimension to receive the ball-shaped portion and contractable to the first lateral dimension to substantially enclose the ball-shaped portion. Screw means extending through the second coupling member draws the retaining means into the second coupling member. In this position the second coupling member prevents the expansion of the fingers from the first lateral dimension to the second lateral dimension thereby coupling the sidecar to the motorcycle.

Abstract: A position selected locking apparatus for an automatic gear box which includes a yoke connected to the position selector and an electromagnetic lock for preventing motion of said yoke. An armature of the electromagnetic lock is biased into abutment with the yoke such that the yoke cannot move and thus the position selector is locked until the electromagnetic lock is energized to free the yoke.

Abstract: An attachment for a bicycle serving as a hitch for towing a small trailer or coaster. The bicycle hitch can be attached to any standard bicycle without modifying the same and is adjustable to suit bicycles of various wheel diameters. The bicycle hitch includes a curved tubular member subtending substantially a quarter circle, adapted to spacedly surround the top back quarter portion of the rear driving wheel of a bicycle in the plane of said rear wheel and substantially coaxial therewith. This curved member is adjustably attached to the bicycle frame or to the seat support rod at its front end, while its rear end carries a standard ball member for hitching purposes.

Abstract: A power transfer mechanism incorporated in a multiple path drive system comprises a transfer case disposed between a source of input torque and a pair of drive axles. Torque is transferred directly to one drive axle and is transferred automatically to the other drive axle through a double-acting roller clutch when required. The transfer case is constructed such that it may be assembled in two configurations; one in which the output shafts are coaxial and offset from the input shaft, and the other in which the input shaft and one output shaft are coaxial, the other output shaft being offset therefrom.

Abstract: A dump truck has a carrier that is placed on its body frame so as to be longitudinally movable thereon when longitudinal impact force exceeding a given value works on the truck's body. Energy absorbing means are interposed between said frame and carrier, for absorbing kinetic energy of said carrier by the use of hydraulic pressure produced by the relative displacement therebetween.

Abstract: A spring ejected drag chute for a bicycle housed in a container clamped to the rear fender.

Abstract: Bicycle, in particular a folding bicycle, substantially comprising elements manufactured out of rectangular strips of thin sheet material of substantially the same width which have been folded and bent and with interhooks composed into hollow profiles which may be filled with hard plastic foam.

Abstract: A sport vehicle comprising a vehicle frame having a step on its upper surface and an upstanding handle rod at its front end. At the lower surface of the front of the frame a front wheel axle is mounted having a pair of front wheels at its ends, the middle portion of the axle being rotatably supported through a steering shaft having a negative caster angle, the vehicle frame and the front wheel axle being interconnected through a resilient member. A single rear wheel is mounted on the vehicle frame at the lower surface of the rear portion thereof. One of the three wheels can be a driving vehicle wheel in which case a pedal lever is swingably mounted on the frame for upwards and downwards movement to drive a longitudinally extending flexible member for reciprocation in forwardly and rearwardly direction.

Abstract: A child restraining seat is hung securely on a back portion of a vehicle occupant seat that has mounted therein a seating sensor, such that a child, if restrained to the child seat, will not close or energize the seating sensor. The seating sensor is circuited in a trigger circuit of an air bag corresponding to the occupant seat such that the air bag will not be inflated to its active position unless said seating sensor is energized.

Abstract: A steering apparatus for a vehicle of the type having a revolving upper body with respect to a lower body thereof in which a directional control valve is provided in a hydraulic circuit to maintain the same steering control when upper body of the vehicle is rotated to 180.degree.. The apparatus comprising a pair of valves for steering, a pair of steering pedal connected to said pair of valves, a directional control valve connected to said pair of valves through hydraulic conduits for right and left steering, a cam provided at around revolving center of the lower body of the vehicle, a switch connected to the directional control valve and, a rocking lever provided on the upper body of the vehicle.

Abstract: A collapsible vehicle which in the exemplary form is a two wheeled vehicle driven by pedals and a sprocket chain. The frame is articulated with joints between frame members, permitting collapsing of the frame members into a substantially parallel relationship in the plane of the frame. Further joints allow collapsing of the frame members in a direction normal to the plane of the frame and into a position with the two wheels opposite each other on opposite sides of the frame members. The frame members include collapsible handlebars, steering column, and seat supporting members.

Abstract: A resilient steering stabilizer for cycles, e.g. a bicycle is provided wherein a pair of crank arms, one on each side of the steering fork of the cycle connects respectively with a pair of pivot arms which turn on a common axle mounted on the cycle frame. Each pivot arm turns against and compresses helical springs mounted on such frame, on both sides of the axle, which springs resist excessive turning of the steering wheel of the cycle. The stabilizer of the invention is, in brief, a centering device which, by spring compression, tends to center a cycle steering wheel or other desired apparatus component.

Abstract: The invention is concerned with a twin tow unit which enables a single tractor to pull two agricultural implements simultaneously. The unit comprises a substantially elongated inverted U-shaped main member, the forward end of which is supported on at least one castor mounted land wheel and the rear end of which is supported on at least one land wheel. Means are provided for locking the rear land wheel in position and links are provided for coupling the front and rear end of the unit to a tractor and each end of the unit is provided with hitching means to which the tow bar of an agricultural unit may be attached.

Abstract: This invention relates to a bearing enabling a shaft to be pivotally mounted, constituted by a bearing body and by two half-bearings, the first half-bearing being fast with the bearing body, while the second half-bearing is mounted to slide in said body in a direction perpendicular to the plane defining the first half-bearing and a means for returning this second half-bearing into the configuration of effective holding of the shaft is interposed between said second half-bearing and the bearing body. The bearing surface of the second half-bearing is provided with a friction lining. One application of the present invention is the production of a cardan suspension in a grab bucket.

Abstract: A coach or bus of integral construction made up of a lower section, housing engine, suspension and service units and ducts, and an upper section incorporating a passenger saloon. The lower section comprises a sequence of boxes serving simultaneously as structural members and running component enclosures. The box walls are of readily replaceable flat panels. The combination of the upper and lower sections provides a much stiffer structure than heretofore found in conventional constructions.

Abstract: A sway control device for mounting on a towing vehicle employing a flexible connector passing over a frictionally damping surface or surfaces for preventing uncontrolled lateral movements of the towed vehicle.The flexible connector comprises preferably a tough, durable belt or cable having an external surface suitable for frictional damping use. A curved or arcuate structure is used in conjunction with the flexible connector for providing the friction damping surface which is positioned to encompass the common pivotal hitch connection of a towed trailer to the towing vehicle to retain and limit vertical, lateral, forward and rearward movement of the trailer coupler in event of disconnection while the trailer is being towed. Means for attachment of a safety chain linkage is incorporated into the device for additional safety when towing.