Abstract: An electric motor assembly comprises a housing and a spindle disposed to rotate in the housing. A motor is provided which comprises a stator coupled to the housing, and a rotor rotatably disposed within the stator such that the rotor is disposed about the spindle. The assembly further includes an output driver, and a gear system operably coupled to the rotor and the output driver to rotate the output driver upon operation of the motor.

Abstract: A pedaling force detection means can be simplified in arrangement, the number of assemblies thereof can be decreased, the pedaling force detection means can be made inexpensive and can detect a pedaling force reliably. A bicycle comprises a drive assist attached to a driving wheel (3), a driving power transmission means (20) attached between a sprocket (26) and a rear wheel, a pair of pedal levers (22), a crank lever (30R) for transmitting a rotation force of the pedal lever to the sprocket and a sliding portion (40R) serving as a swing fulcrum of the pedal lever. A slide pin (42R) at one end of the pedal lever slides within the slide portion in accordance with the rotation of the pedal lever to transmit a rotation force generated by the rotation of the pedal lever to the rear wheel through the sprocket.

Abstract: This invention relates to a bicycle having a driving force transmitting mechanism with oscillating fulcrum point. A sliding part is provided with a dust cover or a brush to prevent dust and the like from being entered therein and to remove the dust, if entered, therefrom. When a rider steps on the pedals alternatively, force of the pedal levers generated by the oscillation of the pedal levers is transmitted to the sprocket through the crank lever. When the pedal levers oscillate, an oscillating fulcrum point of the pedal lever is moved in a lateral direction within the sliding part. The rotating force of the sprocket is transmitted to the rear wheel through a chain. Even if the locus Q of motion of the pedal is different in the first half period (a stepping-on period) and the second half period (a stepping-up period), a smooth movement of the pedal is assured. Such a smooth movement can be kept enough by the dust cover.

Abstract: A treadle-type vehicle body forward drive structure comprised of a base plate, a transmission assembly and a treadle structure installed onto the base plate, a gear assembly enmeshing the transmission assembly to the treadle structure, and a position limiting plate that maintains the position of the drive structure on the base plate, with the extending ends of the transmission assembly follower shaft installed to the wheel hubs of the vehicle body rear wheels. When the treadle rod is tamped slightly downwards, a slant-cut fan gear of the treadle structure causes a slant-cut gear and a straight-cut gear of the gear assembly to synchronously rotate, at which time since the straight-cut gear of the gear assembly is enmeshed with a straight-cut gear of the transmission assembly, they in combination cause the rotation of the follower shaft and, furthermore, the synchronous rotation of the rear wheels. As such, the user is provided riding pleasure and options.

Abstract: Energy storing bicycle comprises: a fluid reservoir accommodating a fluid having a predetermined viscosity compressible for storing pressure energy, to which at least one supply pipe and at least one return pipe are connected; at least one pressure pump whose inlet being connected to the supply pipe, after being compressed, the fluid in the pump is pressurized to a certain pressure and deliver the high pressure fluid out of the exit of the pump; pressure reserving cylinders with the same units as that of the pressure pumps each with an inlet connected to the pressure pipe; the cylinder being able to reserve pressurized fluid with an exit connected to a transmission pipe and having a gate valve so as to control the high pressure fluid to be able to continuously output therefrom for a long time; fluid turbines with the same units as that of the pressure reserving cylinders each with an inlet connected to the transmission pipe, and having a turbine rotor driven by highly pressurized fluid, an exit thereof being

Abstract: A bicycle with a drive mechanism using reciprocal rectilinear pedal motion to propel a pinion gear against a crown gear face associated with a rear bicycle wheel, rotating the rear wheel. The pinion gear receives motion from a helical member surrounded by a slider. Each pedal is united with the slider which moves linearly along a guide or track, forcing rotation of the helical member as the slider is pushed rearwardly by a pedal. A freewheel or overrunning clutch permits power transfer only when the pedal moves rearwardly and allows freewheeling when the pedal is reset. Reciprocal, linear pedal strokes power the bicycle.

Abstract: A treadle cart, having two axles, each axle having one of two pairs of wheels mounted on it, the treadle cart being powered by the pivoting motion of a treadle board which transfers the power from the pivoting of the treadle board through a drive means including a flexible elongated member with two ends that is attached to the under side of treadle board, each of the drive means rotating a power wheel which through a drive train turns a clutch housing, each clutch housing having a clutch rotor mounted in it, each of the pair of clutch rotors alternating in transmitting power to the base wheels of the treadle cart.

Abstract: A wheel chair is provided, including a wheel chair frame including a seat portion, an axle structure and two lateral wheels mounted to the axle structure for rolling the wheel chair over a support surface; and a manual propulsion mechanism including first and second clutches mounted to the wheel axle structure, each of the clutches having an outer clutch drum which engages and rotates an internal clutch core affixed to the wheel axle structure when rotated in one direction and disengages the clutch core and spins freely when rotated in the opposing direction; a lever arm affixed to a lever arm axle rotatably fitted through the frame to a drive cable pulley; a drive cable engagingly wrapped around the drive cable pulley and engagingly around the first clutch drum, and extending from the first clutch drum engagingly around a reversing pulley rotatably mounted on a pulley stem secured to the frame, and from the reversing pulley engagingly around the second clutch drum wound in the opposite direction from its win

Abstract: The invention disclosed herein is a pedal-operated vehicle comprising: a frame; a front wheel and a rear wheel, the front and rear wheels being rotatably mounted to the frame; first and second independently operable pedals reciprocatingly mounted to the frame so as to be capable of upward and downward movement; and a drive mechanism which can be selectively placed in an engaged mode or a disengaged mode, wherein (i) in the engaged mode, downward movement of either pedal imparts torque to the rear wheel in a first rotational direction to propel the vehicle forward and upward movement of either pedal imparts no torque to the rear wheel, the rear wheel being substantially nonrotatable in a second rotational direction opposite to the first rotational direction, and (ii) in the disengaged mode the rear wheel is freely rotatable in the second rotational direction as well as in the first rotational direction.

Abstract: A wheeled transporter for air cargo includes a load carrying platform having rollers, connected at one edge to a power console incorporating a prime mover, and supported at the other edge with unpowered castoring wheels. The transporter is driven by two steerable wheels located beneath the console adjacent opposite ends. Each steerable wheel is driven by a reversible motor, and is steerable so that when one wheel is turned in one direction the other is turned in an opposite direction. The transporter can thus be driven in either direction along path (X), and turned or rotated on (Z). By turning the wheels through 90 degrees to the longitudinal direction, the transporter can be driven along a path (Y) in either direction, and steered by varying the differential speed of the wheels. A container carried on the deck can be moved and rotated in directions X', Y' and Z'.

Abstract: This invention relates to an improved lever driven bicycle including a shifting mechanism for controlling a drive ratio between the oscillating lever and the drive wheel. The drive lever arrangement may be located about the front or rear wheels of the bicycle and, when about the rear wheel, may include a sole lever or dual levers. The drive lever arrangement includes a drive lever, a force applicator, a shifting mechanism, and a force converter which together transform the oscillating displacement of the lever to a rotation of the drive wheel. The shifting mechanism includes a slide block located about the lever which engages with the drive lever upon downward motion of the drive lever and controllably slides along the drive lever upon upward motion of the drive lever. The position of the slide block corresponds to a drive ratio between the drive lever and the drive wheel.

Abstract: A crank assembly for an electrical bicycle includes a crank axle with two uni-directional bearings respectively and securely mounted to two ends thereof, each one of the uni-directional bearings securely connected to a respective one of two torque members and each of the torque members having an extending portion extending therefrom. Two crank arms are respectively and rotatably mounted to the two base portions. Each one of the crank arms has a recess defined therein so that a distal end of the corresponding extending portion is securely positioned in a periphery defining the recess. A detection device is disposed to each of the two crank arms and is located beside the extending portion corresponding thereto.

Abstract: An improved bicycle driving apparatus structured to generate driving power including a driving assembly to generate driving power, a tracking assembly to transmit the driving power to the rear wheel, a speed-shifting assembly structured to permit changing of the gears. The driving assembly includes a right pedal assembly and a left pedal assembly, each structured for movement in an alternating direction and along a generally arcuate path of less than 360 degrees. The driving assembly also includes a variable speed transmission assembly structured to vary the amount of power required for movement of the right and left pedal assemblies. The right pedal assembly includes a right pedal cylindrical hub secured to a drive shaft. Furthermore, it includes a first and second pulling rod, a first and second auxiliary pulling rod, and a right pedal arm extending from the right pedal cylindrical shaft. The left pedal assembly includes a left pedal arm, a first roller, and a second roller disposed upon the drive shaft.

Abstract: A user powered vehicle which can be propelled upon an ice surface by applying force in repetitive power stroke movements in a rowing manner. The vehicle includes a main framework (10), a forward facing seat (64), a plurality of attached ice runners (14, 16) adapted to support the vehicle for efficient forward movement upon the operating surface, a movable propulsion wheel assembly (18) including at least one propulsion wheel (38) adapted to provide forward thrust when engaged with the operating surface, a rowing assembly (74) and footrest assembly (66) operable for converting rowing motions into propulsion force, and means (86) for transfer of weight from ice runners to propulsion wheel for increased traction during rowing power strokes and for re-transfer of weight to ice runners for improved efficiency between power strokes. The vehicle is adaptable for use on snow or land by replacing ice runners with skis or wheels respectively.

Abstract: This improvement is for a hand operated wheel chair or exercise machine. The machine uses two racks to operate two one way clutches to furnish forward motion from both the forward and backward strokes of the input lever arm. The mechanical advantage of the input lever arm is readily changeable to affect the overall gear ratio of the drive. Steering is accomplished by turning a wheel on the lever arm. The control is similar to that on a wheel controlled airplane.

Abstract: A motion transfer mechanism for transferring reciprocal motion to rotary motion comprises at least one driving member having front and rear end portions terminating, respectively, in front and rear ends and mounted to undergo reciprocal motion about a first axis located closer to the rear end than the front end of the driving member. At least one rotary member is mounted to undergo angular displacement about a second axis. An interconnecting member connects the driving member to the rotary member, such that reciprocal motion of the driving member effects angular displacement of the rotary member about the second axis. At least one driven member is mounted to undergo rotary motion in one direction of rotation about the second axis. A transfer device drivingly connects the rotary member to the driven member for transferring angular displacement of the rotary member to rotary motion of the driven member in the one direction of rotation.

Abstract: A bicycle mechanism to permit a forward force to be applied to the bicycle's drive wheel by backward rotation of the bicycle's pedals in addition to permitting a forward force to be applied to the drive wheel by a forward rotation of said pedals. A preferred embodiment allows one of the pedals to be rotated in one direction while the other pedal rotates in the opposite direction.

Abstract: A rowing powered cycle is provided with a pair of rowing arms movable through a fore-aft reciprocal stroke motion and coupled to a drive mechanism for driving the cycle. The rowing arms are additionally coupled to a steering linkage for steering the cycle in response to left or right tilting movement of the rowing arms. Cycle steering may be performed simultaneously with reciprocal stroking motion of the rowing arms to drive the cycle, or during coasting movement.

Abstract: A mobile exercising apparatus which promotes cardiovascular exercise yet minimizes impact to critical joints. A frame supports a pair of reciprocating members which are displace generally horizontally along the frame at one end yet reciprocate in a circular motion at the other through a coupling system attached to the frame. Structure is included which permits each foot of the user to move in a generally elliptical path during exercise and drive a wheel thereby propelling the apparatus. This allows simulation of walking or running without impact. The device may include linkage to facilitate a corresponding upper body exercise involving movement of the arm in which case each hand of the user is displaced along an arcuate path.

Abstract: An armrest-driven wheelchair in which the armrests are pivoted to the wheelchair frame and turned turned back and forth about a respective pivot to rotate the wheels forwards or backwards by a respective transmission rod, which is driven by the respective armrest to connect a first bearing means, which is driven to turn the respective wheel forwards, or a second bearing means, which is driven to turn the respective wheel backwards, to the respective armrest.

Abstract: A balance-shifted personal carriage (19) designed for physically challenged persons such as paraplegics confined to wheelchairs. The carriage (19) basically consists of a base frame assembly (13) that supports a seating assembly (15) a pair of free pivoting wheels (18) located in the front, a pair of steerable wheels (20) controlled by the rider and located in the back, and a centrally located power wheel (22) that is controlled by the rider. The balanced-shifted carriage (19) is operated in either of two modes of operation: in Mode 1, the rider shifts their weight backwards to allow the steerable wheels to contact the floor at which time the power wheel (2) is made to rotate to propel the carriage; in Mode 2, the rider shifts their weight forward to cause the steerable wheels (20)to rise and allow the pivoting wheels (12) to contact the floor allowing the rider to pivot and move the carriage away from an obstacle.

Abstract: There is provided an occupant-propelled land vehicle, such as a bicycle, having a frame, at least one front wheel, at least one rear wheel, and a seat for the rider of the vehicle, supported by the frame, wherein two levers, each having a front end and a back end, are pivoted on the frame on each side forwardly of the rear wheel and at a point substantially closer to the back end than to the front end. Two rigidly interconnected and spaced-apart parallel discs, one of the discs being toothed, are associated with an upper portion of the rear wheel. Connecting rods are pivotally connected to the back ends of the levers and are eccentrically-rotatably connected to the discs, a sprocket wheel is connected to the axle of rear wheel, and a driving chain is included in a connection between the toothed disc and the rear-wheel sprocket wheel.

Abstract: A clutch mechanism for use on a conventional bicycle which permits independent actuation of both pedals and provides a driving force through 100% of a pedal stroke. The clutch is generally comprised of a single, outer, cylindrical rotor which extends between the two pedals, and two internal rotors, respective to each pedal, positioned within the outer rotor. The internal rotors each include respective longitudinally extending, annularly spaced webs and longitudinally extending V-shaped portions integrally positioned between successive webs. In addition, magnets are attached to each rotor and positioned at the vortices of the V-shaped portions. The clutch further includes a set of cylindrical rods positioned between the two rotors which become wedgingly engaged between the magnets and the outer rotor when the pedal is actuated by a user of the bike. In addition, each pedal is attached to the frame of the bike via a spring which prohibits the pedal from being rotated a full 360.degree..

Abstract: The invention is a device for providing an upper body workout while riding a bicycle. The device comprises a base member which is secured to the bicycle. A lever is pivotally attached to the base member and drives a sprocket. The sprocket, in turn, drives a chain which drives a conventional bicycle crank shaft, thus aiding in propulsion of the bicycle. The rider uses one hand on the lever and the other hand grips the handlebars in a conventional manner. The lever has a handle which can be pivoted to either a left or a right side so as to provide a work out for the rider's left or right arm.

Abstract: Attachment is provided for a conventional wheelchair to enable the conventional wheelchair to traverse irregular terrain. The attachment comprises a pair of frame members which are secured to the frame of the wheelchair and which extend forwardly therefrom. A drive wheel is pivotally and rotatably mounted at the forward end of the frame members and has a pair of ratchets secured to the opposite sides thereof. An actuating arm extends upwardly and rearwardly from each of the ratchets and has a handle provided at its upper end. The user of the wheelchair may propel the wheelchair by reciprocating the actuating arm.

Abstract: An attachment is provided which may be mounted on a conventional wheelchair to enable the conventional wheelchair to traverse a regular terrain. The attachment comprises a pair of wheel drive assemblies which are mounted to the rear wheels of the wheelchair. Each of the wheel drive assemblies comprises inner and outer plates which embrace the inner and outer surfaces of the wheel and which are interconnected by means of bolts. The nut or bolt head is positioned outwardly of the outer surface of the outer plate and has a ratchet wrench mounted thereon. A hollow pipe embraces the upper end of the ratchet wrench and extends upwardly therefrom. An inverted U-shaped member has its opposite ends rotatably received by the upper ends of the hollow pipes.

Abstract: A linear drive recumbent cycle (10) having linearly reciprocating pedals (68a,b) located approximately above the front wheel (14) in order to achieve a short wheel base recumbent bicycle design with the crank (42) located low between the wheels and with the seat located near or behind the center of gravity of the bike. The top extremities of a pair of pedal sliders (32a,b) are journalled for independent pendulum-type oscillation in a pedal-slider bracket (28) which is connected to a frame (12) through a front tube (30). The linearly reciprocating pedals (68a,b) are attached to the lower extremity of the pedal-sliders (32a,b) and are rotateably linked to the crank (42) through a pair of curved links (34a,b) so as to transfer power from the pedals (68a,b) to the crank (42). The pedal-sliders are short and straight whereby saving weight.

Abstract: A human powered vehicle is disclosed. The vehicle includes a frame with the capability for supporting an operator one the frame. The vehicle further includes a drive wheel mounted for rotation to the frame, and a mechanism powered by the drive wheel to propel the vehicle. A device is also provided for rotating the drive wheel to operate the power mechanism. A pedal lever arm is mounted to the frame for reciprocating movement between first and second positions, and a cam member is operatively secured to the frame and said pedal lever arm for pivotal oscillating movement in response to reciprocal movement of the lever arm. Finally, a linkage couples the cam member with the drive wheel rotating device and is mounted for longitudinal reciprocating movement relative to the length of the frame in response to the oscillating movement of the cam member to operate the drive wheel rotating device.

Abstract: There is provided an occupant-propelled land vehicle, such as a bicycle, having a frame, at least one front wheel, at least one rear wheel, and a seat for the rider of the vehicle, supported by the frame, wherein two levers, each having a front end and a back end, are pivoted on the frame on each side forwardly of the rear wheel and at a point substantially closer to the back end than to the front end. Two rigidly interconnected and spaced-apart parallel discs, one of the discs being toothed, are associated with an upper portion of the rear wheel. Connecting rods are pivotally connected to the back ends of the levers and are eccentrically-rotatably connected to the discs, a sprocket wheel is connected to the axle of rear wheel, and a driving chain is included in a connection between the toothed disc and the rear-wheel sprocket wheel.

Abstract: A toy vehicle for a child includes a track and roller drive train for propelling the vehicle. Each of a pair of pedal arms is pivotally mounted at its forward end and has a split track mounted at the rear end thereof which rides on a roller mounted on either side of the axle. As the pedal arms are reciprocated by a rider, the tracks drive the rollers and axle with the gap between ramps of the track allowing the track to straddle the axle at the bottom of each stroke. The track may be generally curvilinear, or compound angled to balance the torque generated by each stroke in either the forward or rearward direction, and to also provide a smoother driving action through substantially 180.degree. of axle rotation with each stroke.

Abstract: A human-powered boat propelling drive is provided for translating occupant's body weight and variable movements into the power for propelling boat. By coupling the propelling drives, a human-powered boat propelling device is provided which can be propelled and steered by occupant's body weight and movements. By grouping the propelling drives and devices on series or on parallel or mixed parallel series, variable human-powered boat propelling systems can then be provided for a wide range of boat applications.

Abstract: An apparatus, more particularly a bicycle, which includes a device or assembly for providing rotary power. The device or assembly comprises a frame; a shaft rotatably mounted to the frame; and a first and second pawl member connected to the shaft. A first sprocket is coupled to the first pawl member for ratcheting therewith and for rotating the shaft in a predetermined direction; and a second sprocket is coupled to the second pawl for also ratcheting therewith and for rotating the shaft in the predetermined direction. A first and second idler sprocket is rotatably supported by the frame such that a first and second endless chain respectively is entrained over the first and second idler sprockets and the first and second sprockets. A drive sprocket is connected to the shaft. An endless drive chain in entrained to the drive sprocket and is coupled to a rear wheel of a bicycle.

Abstract: A multipurpose transmission mechanism for bicycles, including a pair of one-way cranks, a control mechanism, a reciprocating mechanism, and a fixed lock wheel and a chain wheel holder.

Abstract: In the bicycle disclosed herein, the axle of a driving wheel is journaled in a yoke at one end of an elongate frame and a steerable wheel is mounted at the other end of the frame. A rocking column is pivotally mounted on the frame for rotation around an axis which is concentric with the driving wheel axle, a backed seat being mounted on the other end of the column. The high speed element of a concentric speed transforming mechanism is connected to the axle and the low speed element is connected to the rocking column.

Abstract: An all-terrain wheelchair comprising a frame having a pair of wheels rotatably mounted at each side thereof with a seat mounted on the frame between the wheels. Each pair of the wheels is operatively interconnected so that rotation of one wheel of the pair of wheels will cause both wheels to rotate. A ratchet arm is operatively connected to each of the front wheels so that the operator may propel the wheelchair. An optional flexible track is also provide for each pair of wheels.

Abstract: A drive device for a rotating part, in particular a vehicle axle, has at least one digital mechanical drive having an active wedge and associated drive devices which produce, structurally predetermined or optionally from different forms of energy, pulses which are direct-driving or, via energy buffer storage, proportional to path or angle. Such a drive device is useful in vehicles which are driven by human force or in stationary installations. It includes a mechanical pulse drive which, depending on the design, is driven optionally either by human force and/or pressure fluid. A pumping device (6) diverse a part of the drive energy for filling a ppressure accumulator. A control valve (19) and a working member permit pulse-wise connection of a force amplifier (18). This pulse drive of digital character represents a direct drive with human force in the form of mechanical pulses. It stores surplus energy which has been fed in, and then, as a force amplifier, makes it available as needed.

Abstract: An all-terrain wheelchair includes a frame which has a steering platform attached to the forward most portion. The steering platform has an operable ground-engaging pneumatic wheel which is controlled by a steering handle. The steering handle may be selectively locked in a fixed position by an operable locking mechanism. A seat is attached to the rearward portion of the frame. Attached to the frame on each side of the seat is an elongated axle with a large diameter, ground-engaging wheel. Each wheel has a plurality of uniformly spaced tubular members secured to the outer peripheral sides of each wheel and extending horizontally outwardly therefrom. A removably attached arm on each axle can be operably engaged with the tubular members to cause forward or rearward motion of the vehicle. An operable winch is mounted forwardly of the seat on the frame.

Abstract: A method of making a glass micromodel of a pore system found in petroleum reservoir rock wherein a computer-generated two-dimensional binary image of the actual rock pore system taken in thin section is used to produce a template for etched reproduction of the pore system in the glass model plate of the micromodel. The template is produced by digitizing a video image of a view of the rock in thin section, which thin section includes injected dyed material to make the pore system visible, processing the digitized video image through a digital filter so as to effect projection of the three-dimensional aspects of the pore connectedness and geometry viewed through overlaying meineral onto the plane of the imaged view to obtain a two-dimensional template image of the three-dimensional pore system with pores accurately coordinated and pore geometry relationships reliably preserved.

Abstract: A tricycle or other similar vehicle has an improved drive mechanism utilizing a pair of pedals, each of which has an associated cam and cam follower such that as the pedals are reciprocated the cam followers ride along the cams to rotate a drive axle and propel the vehicle. A shift mechanism permits realignment of the cam followers and cams to thereby change the direction of movement of the vehicle as the pedals are reciprocated. The drive mechanism and shift may be mounted to the rear wheels or, in an alternate embodiment, mounted to the front wheel of the vehicle.

Abstract: This invention relates to a rotary driving device, wherein a rotation and an axial movement of an input shaft are imparted to intermediate members as a rotary movement through a torsional connection, whereby the rotary movement of the intermediate members is imparted to an output shaft through a clutch mechanism. This rotary driving device can be used as a driving device in a bicycle for example. Without utilizing the conventional device wherein a chain, a sprocket and the like are used, a rocking movement of a pair of rocking arms connected to the input shaft makes it possible to advance the bicycle.

Abstract: A wheelchair having a propulsion and speed change mechanism, the mechanism has a clutch with a cam clutch (21) and a cylindrical fly wheel (23) installed on a hub (24) of the shaft (25) of the main wheel of the chair. The clutch includes roller bearings (14), plate springs (22) and forward and backward regulating device (15). A matched union gear (20) is formed at the center of the cam clutch (21) and matched with a union gear (19) formed on a propulsion and speed change bar (12) so that the cam clutch (21) and the propulsion and speed change bar move as one body. The cam clutch (21) and the bar (12) are installed with a bearing (17) on the axle of the frame (13) of the wheelchair. A connecting rod (2) has one end connected to one of a plurality of holes (10) on the propulsion and speed change bar (12) with a fixing pin. The other end of the rod is connected to the hole (7) of the propulsion and speed change bar with a moveable pin (6).

Abstract: A recreational vehicle has a seat for a rider, mounted on a frame, steering apparatus, and a drive train for supplying driving power to a drive wheel incorporating a pair of reciprocating pedals connected to the drive wheel through one way clutches. The pedals are connected to the clutches by cables which operate to return each pedal as the other receives power from the rider. The vehicle has three sets of wheels, and two handles which are effective for steering all three sets of wheels (or other supports, such as skates) independently. The vehicle is braked by steering two sets of wheels in opposite directions.

Abstract: A pedal drive for a bicycle having a driven wheel rotatably mounted to a frame, including a first sprocket rotatably mounted to the frame; a second sprocket rotatably mounted to the frame below the first sprocket and in planar alignment with it at a location spaced apart from the first sprocket; an endless chain extending about and interconnecting the first and second sprockets; a third sprocket rotatably mounted to the frame for rotary movement in response to the rotary movement of the first and second sprockets; an endless chain extending about and interconnecting the third sprocket and a sprocket attached to the driven wheel; left and right upper crank arms attached to the first sprocket and extending in generally opposite directions from each other; left and right lower crank arms attached to the second sprocket and extending in opposite directions from each other; a left pedal arm carrying a left pedal and pivotally connected to the left upper crank arm; a right pedal arm carrying a right pedal and pivot

Abstract: An apparatus is disclosed herein for translating an input power force into an increased power output via a power multiplier unit. The apparatus comprises a plurality of lever arms pivotal carried on supporting structure so that a portion of the lever arm extending beyond the pivot connection constitutes a cam surface upon which roller cams operate to convert up-and-down lever arm movement to rotary movement of a sprocket gear carried on a rotatable shaft. The roller cams associated with each lever arm are arranged with respect to each other so that the cams operate from the lever arms as the lever arms are driven differentially. An output drive shaft is operably coupled to the sprocket gear for receiving an imparted driving force thereto. Timing linkage interconnects the lever arms with the sprocket and its shaft for augmenting the translation of power by smoothing the transition of movement between the roller cams and the lever arm cam surfaces.

Abstract: An automatic speed variating means for bicycle includes a pedal having a driving rod, a speed controller having a magnetic actuator driven by the bicycle wheel and a driving chain driven by the driving rod wherein the depression of the pedal may drive the chain for normal bicycle running and the faster bicycle running may operate the magnetic actuator to exert a greater torque to automatically adjust the speed controller for faster speed variation.

Abstract: This invention relates to a driving mechanism for bicycles and the like devices wherein the conventional frame, seat and chain axle drive is employed, characterized in that an oscillating arcuate body is mounted on a base connected to the bicycle frame, said arcuate body having a foot rest connected through a bracket to said base, a connecting rod is connected from the front tip of said arcuate body to an eccentrically mounted crank shaft, said crank shaft being mounted on a sprocket wheel driving the chain and axle drive of the bicycle and like devices.

Abstract: A wheelchair having a frame capable of supporting the occupant includes a plurality of wheels including two driving wheels. Left and right side levers are mounted on the wheelchair such that the tops of the levers can be moved back and forth reciprocally toward and away from the occupant of the wheelchair. When the levers are in a position towards the occupant of the wheelchair, they are in a neutral position and by pushing away from the occupant from the neutral position to a displaced position, a power stroke is performed. Movement of the levers in the reverse direction back toward the occupant constitutes a return stroke of the same. A power transfer mechanism includes a first and second ratchet operatively associated with each of the driving wheels. The first ratchet allows the driving wheel to free wheel at all times in a forward direction.

Abstract: An operator powered vehicle configured to be ridden by an operator in an upright or forced weight position wherein muscle force provided to pedals is augmented by the weight of the operator and by an upward force provided by the operator's arms on the handle bars. Lever-type pedal arms having an up and down motion are employed and the pedal arms are coupled to the rear wheel by one or two flexible drive cables. The cables are wrapped about the rear wheel hub in unsecured relation thereto so that the bicycle may be moved backwardly without damage to the drive cable or to the wheel. The ends of the cables are tensioned to prevent the cables from becoming unwrapped from the rear wheel hub. Means are provided to permit disassembly of the steering assembly and the front wheel from the frame to provide for ease of carrying and storage of the vehicle when it is not being used.

Abstract: A pedal driven plow having a frame, front and rear wheeled axles and a plow blade pivotally mounted to the front of the frame. A pair of longitudinally extended, pivotally mounted pedals have tongues on their underside which alternately engage gears on the rear axle to propel the plow when the pedals are alternately raised and depressed by a walking motion. Support bars are provided along the frame sides. An alternate embodiment utilizes a chain drive.

Abstract: A stepless speed change gear for bicycles and the like. A device is disclosed wherein a rotary input is converted to reciprocating motion by a rack and pinion, the rack is mounted at the end of a lever which is oscillated; an arm is mounted on the lever, connecting it to a rod which is driven in alternating rotary directions; the rod is connected to the output shaft by two ratchets driven in alternate directions by said rod, said ratches are geared to said output shaft in such a way that the output is a continuous rotary motion. The speed change mechanism being that said arm is slidably mounted on said lever and rod so that the nearer the arm is drawn to the end of the lever on which said rack is mounted the greater is the oscillating motion imparted and the greater is the subsequent angle through which the rod is rotated.