Abstract: Three wheel vehicle apparatus includes a pair of rear wheels and a front driving wheel. The front driving wheel is powered through a hand crank system, and the front, driving wheel is urged to a center, straight ahead position, by a tension spring connected between a main vehicle frame and elements of the front wheel.

Abstract: A three-wheeled vehicle having a front body member carrying front wheel seat, hand pedals and leg supports pivotally connected to a rear body member carrying the rear wheels and handlebar. The front body member includes a seat for the operator and pedals to be operated by the rider's hands. The seat, pedals, front wheel and leg supports are maintained in a fixed relationship whereby pivoting of the front frame portion simultaneously pivots the seat, pedals, drive line and front wheel to maintain said fixed relationship while turning and supplying power to the front wheel. A stabilizing dampener between front and rear frame sections provides smooth steering and inhibits undesired, inadvertent, side to side movement of the rider's body and thereby repetitive back and forth turning of the vehicle.

Abstract: A dual drive bicycle having a steerable front wheel and a rear wheel that is driven. A foot-powered drive system includes a first rotatable shaft extending transversely to the bicycle. A rotatable drive sprocket is operatively connected to a second shaft rotatably mounted on the steering post in which the front wheel is mounted. A rotatable driven sprocket is mounted on the first shaft and is capable of rotating same for forward drive. A continuous drive chain extends about the drive sprocket and the driven sprocket. A third rotatable shaft is mounted on the steering spindle so as to pivot with the front wheel when the latter is steered. A universal joint connects the second and thrid shafts at a location above the steering shaft. A further continuous chain and cooperating sprockets together with a hand-crank are provided to rotate the third shaft.

Abstract: A hand propelled tricycle has a hand-operated crank assembly mounted to an upper end of a front fork stem coupled to a front wheel supported by the fork. The fork is straight without caster and a set of springs attached between the fork and a tricycle frame provides centering of the front wheel. A pair of spaced-apart wheels is mounted to an axle at the rear of the frame.

Abstract: Chain control apparatus is provided for a bicycle having a chain journaled around spaced apart gears so as to have an upper run and a lower run wherein the chain control apparatus limits movement of the lower run in directions away from the upper run when the bicycle is operated in rough terrain or is used in jumping operations and wherein the chain control apparatus is mounted for permitting pivotal movement thereof around a generally horizontal axis and around at least one generally vertical axis.

Abstract: A bicycle has both manual drive and pedal drive assemblies which may be operated simultaneously or independently. The manual drive assembly is connected to the front wheel and the pedal drive assembly is connected to the rear wheel. Both the manual and pedal drive assemblies incorporate chain drive mechanisms as well as crank assemblies. The manual crank assembly is mounted at the top of the front fork journal and also serves as a handlebar assembly for steering the bicycle. In order to provide sufficient clearance between the chain which extends alongside the front forks and the frame, the frame is bent laterally (just behind the steering sleeve) to accommodate the chain during steering movements. In a first embodiment, the frame member extends generally downwardly and rearwardly from the steering sleeve to a sufficient degree to provide sufficient clearance between the crank assembly to allow the bicycle to be steered while the front wheel is being manually driven.

Abstract: The mobile standing air has a rectangular base with two main wheels near the rearward portion of the base and two main caster wheels mounted on upward, forward and outward extensions near the front of the frame. Two rearward extensions mount smaller caster wheels to prevent rearward tipping. The standing aid has four members which extend vertically from the base. Horizontal pieces between the members form side and front walls which extend upward to an upper high area of a user. The rear of the machine is closed with a pivoted butt pad support which clamps a user in the machine along with forward relatively large thigh pads, a smaller horizontal lower knee pad and a horizontal heel or Achilles pad at the rear. Side pads are positioned adjacent the heel pad and halfway up the side portions at the knee area of a user. The effect of the pads is to firmly splint legs in place. Hand wheels on opposite sides drive sprockets and chains and pinions attached inside the main wheels.

Abstract: A standing support having a truncated lower horizontal side frame member has an extension flange mounted thereon to laterally displace the drive wheel assembly outward relative the side frame member to widen the rear facing cavity defined therebetween. A cantilevered floor pan configuration removes transverse obstructions between the side frame members to allow the further longitudinal insertion of a conventional wheelchair within the cavity therebetween. A hand crank assembly mounted to the main frame aids in the transfer of the handicapped user from the conventional wheelchair to the improved standing support of the present invention.

Abstract: A hand crank powered wheelchair with forward, coast, reverse, and braking capability. The wheelchair has a left and right hand crank. Each hand crank is used to independently control the two rear wheels. A clutch and brake is contained in the hub of each rear wheel. The clutch drives wheel forward when hand crank is rotated forward and allows wheel to coast when hand crank stops rotation. A reverse enable lever selects brake or reverse mode. When in brake mode minimal energy applied to crank in the reverse direction will slow or stop rear wheel. When in reverse mode, brake acts as clutch, allowing reverse rotation of hand crank to drive rear wheel backward. The drive may include a gear shift mechanism. Drives of the invention may be applied to other wheeled vehicles such as delivery tricycles.

Abstract: A pedalling attachment for wheelchairs, to form a composite vehicle therewith, which includes an attachment frame with a pedalling mechanism and novel attachment means thereon. The attachment frame has two slidably and rotatably adjustable frames slidably insertable therein, with attachment means located at the ends thereof which grip appropriate portions of the wheelchair side frames. The attachment means are adjustable with respect to each other, to the attachment frame and to the wheelchair frames, so that a wide variety of sizes, configurations and styles of wheelchairs can be accomodated. The pedalling attachment, when attached to the wheelchair, makes the composite vehicle rigid enough to use safely on streets and highways, and to travel at highway speeds thereon for long distances.

Abstract: A hand operated cycle apparatus including a cycle frame having a pair of spaced apart rear wheels rotatably attached along the horizontal axis to the rear of the cycle frame. A yoke is pivotally attached to the front of the cycle frame and a front wheel is rotatably attached to the yoke. A drive mechanism is provided for rotating the front wheel and pedals are attached to an upper portion of the yoke and to the drive apparatus for selectively turning the drive apparatus by hand. A seat is attached to a rear portion of the cycle frame. Brakes are operably attached to the cycle frame for selectively holding both of the rear wheels from rotating with respect to the frame. A footrest is provided for supporting the feet of the cycle user.

Abstract: A folding wheelchair comprising first and second side frames which are hingedly secured together to enable the wheelchair to be moved between folded and operative positions. Drive wheels are located at the lower rearward ends of each of the side frames and are driven by hand wheels rotatably mounted on the side frames. A removable seat is positioned between the side frames and when in position, provides a seating area for the user of the wheelchair and also serves to maintain the wheelchair in its operative position. Folding arm supports and foot supports are also provided.

Abstract: A child's car seat having front, rear and bottom walls, has an attachment for anchoring upon a shopping cart which includes a pair of spaced straps at their one ends anchored to the rear wall, extending forwardly underlying the bottom wall and at their free ends adjustably secured to a pair of strap fasteners upon the front wall. A pair of snap fasteners on the rear wall are adapted to interlock with a cross bar on the shopping cart, the free ends of the straps adapted to extend around and retainingly engage the push rod handle of the shopping cart.

Abstract: A self-propelled vehicle, primarily for children, comprising rigid frame having elongated seat and leg rest, and backrest integrally formed with and making an internal angle with the seat rest which may be slightly greater than 90 degrees. Beneath the seat adjacent apex of the angle, the frame is mounted on supporting means journalled on an axle which connects a pair of enlarged drive wheels. In normal operating position, the leg rest is supported above the ground by a first caster-like wheel. A similar second caster-like wheel is mounted to an externally projecting support near upper end of the backrest, which in normal operating position is held off the ground. The vehicle is propelled forward in a linear direction by operating the drive wheels either by a system of foot pedals or hand cranks. In another modification, in which the position of the seat is lowered, the drive wheels are rotated manually by knobs near the periphery.

Abstract: Enhanced mobility wheelchair is disclosed. A seat and frame supporting the seat includes a base portion and a seat supporting portion maintained in a space relationship by a plurality of spacing numbers. A pair of back rest supporting members extend from the rear base portion of the frame upward past the seat supporting portion and have a back rest supported therebetween. A pair of right and left rear wheels are independently and rotatably mounted on opposite sides of the frame near the base portion thereof and a pair of right and left front wheels are independently and rotatably mounted near the base portion of the frame at the front thereof. Each wheel includes a coaxially mounted sprocket and the same sided wheels are connected with an endless chain over the sprockets to cause the wheels to turn in unison.

Abstract: A hand-propelled chariot or vehicle is shown which is particularly useful for crippled individuals. The chariot has a frame having a seat portion, a seat back and left and right side arms, and an extended front foot platform. Rear wheels support the seat portion relatively close to the ground, and the height of the front foot platform is about half the height of the seat portion giving the chariot a low profile to facilitate mounting and dismounting by a crippled person. Hand crank operated, chain and sprocket, direct drives are connected to each rear wheel to turn same in either direction. Castors are mounted to support the front foot platform and permit the chariot to turn. A friction brake is connected to the rear wheels to hold the chariot steady during mounting and dismounting.

Abstract: A propulsion and steering device for a conventional wheelchair or the like which includes a frame and attachment instrumentalities extending from the frame to the wheelchair, propulsion and steering instrumentalities which form a part of the frame and include a steerable wheel, and a folding instrumentality integrally formed with the frame to collapse the frame for storage, in which the folding mechanism is relatively adjustable which changes the steering rake angle to accommodate people of different dimensions, and the propelling area is rotatably adjustable to similarly accommodate people of different dimensions.

Abstract: A wheel chair having novel features for more comfort and easier operation by the occupant, with reference to the chain drive and tension adjustment therefor, a guard for the chain, a variable tension brake system, swing away foot rests, and swing away (and removable) arm rests, whereby the user can enter from the side of the chair.

Abstract: A self-propelling and steering attachment for a wheel-chair which can be installed and removed by the user while remaining seated in the wheel-chair and which comprises a sleeve, a steering post rotatably supported by the sleeve, a ground-engaging steering and propelling wheel carried by the lower end of the steering post, a crank mechanism carried by the top end of the steering post, a power transmission connecting the crank and the steering and propelling wheel, a framework which is quickly connectable to, and disconnectable from, the front frame portion of the wheel-chair, and a pair of superposed longitudinally-extending bars interconnecting the framework and the sleeve. The upper bar is rigid with the sleeve at one end and pivots relative to the framework at the other end. The lower bar is pivotally connected to the sleeve and to the framework and is extensible and retractable, being provided with a locking pin to lock this bar to a retracted, adjusted length.

Abstract: A drive system for a vehicle permitting the use of an operator's arms and legs to power the vehicle. A multispeed hub assembly is offset from a powered wheel assembly and drives same with a roller chain. Arm and leg power is imparted respectively to a hand crankshaft and a live axle which power is transmitted to the multispeed hub via additional roller chains. A speed control for shifting the multispeed hub is actuated by handgrip rotation during normal hand crank operation to permit speed changes without release of either handgrip. A brake mechanism on the hand crankshaft actuates brake cables actuating caliper brakes upon reverse rotation of the hand crankshaft. The multispeed hub may include an internal coaster brake mechanism in one form of the invention.

Abstract: A hand-propelled wheelchair for riding upon sidewalks and ramps without rolling backwards or abruptly changing directions. The wheelchair has at least one, and preferably a pair of cam-actuated manual drive assemblies. Each manual drive assembly has a drive mechanism, which preferably takes the form of sprockets and a flexible chain drive. The manual drive assembly also includes a clutch and a rotatable hand crank with a cam thereon for engaging the clutch and drive mechanism. The hand crank and cam are movable from a drive position to a free-wheeling position. An auxiliary exercise assembly is provided to exercise the feet of the person sitting in the wheelchair when the hand crank is rotated in the free-wheeling position.

Abstract: A drive system for an operator powered vehicle utilizing both arm and leg power. Leg power drives an axle carried sprocket coupled to a torque tube via a roller chain. A hand crank is powered by arm motion and is coupled to a concentric torque tube by a unidirectional clutch. Rotary motion is accordingly imparted to the torque tube by the arms or legs, jointly or individually, which motion is transmitted to a wheel hub via a roller chain and sprocket arrangement. A chain shifter provides a variable speed power transmission between said torque tube and the wheel hub. Brake cable actuating members on the wheel axle and the hand crank permit selective tensioning of brake cables actuating front and rear wheel brakes. A modified form of the invention dispenses with the torque tube. Driving and driven sprockets of a hand crank assembly are fixedly mounted on a hand crank.

Abstract: A wheelchair is constructed so as to be able to mount curbs, and overcome similar obstacles. In front and above each main wheel of the wheelchair, an auxiliary wheel or wheels are mounted, so that the auxiliary wheels will contact the obstacle at a point on their circumference below their center in such a way that they are able to ride up over the obstacle and lift the main wheels to a position where they can do likewise.

Abstract: A wheeled vehicle is arranged to be completely hand powered and controlled. Since primary utility is for paraplegics, the vehicle is preferably configured as a tricycle using wheels specifically dimensioned as for use with bicycles. A column is pivoted around the front of the main frame of the vehicle with a front wheel attached at one end and a hand crank assembly attached at the other end in a manually accessible position relative to the vehicle seat. The crank assembly is coupled to drive the front wheel and includes rotatable sleeves on the grip with control mechanisms attached to these rotatable sleeves. By including brake actuating levers on the sleeve, the vehicle can be motivated, braked and/or steered by hand. Shifting mechanisms for speed control can be included either in proximity to the seat on the main frame or on the grip sleeves through suitable adaptations. A mechanism can be included to permit repositioning the grip cranks into any of a plurality of relative radial orientations.