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6203043 |
Four-wheel, human powered cycle
A semi-recumbent, human powered, four wheel cycle has an independent front suspension and wheels that are turned. A conventional bicycle chain drive drives one or both front wheels. The rear wheels...
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6173982 |
Self aligning crank assembly and method
An improved cycle transmission comprising 1) a freewheel cluster rotatably coupled to the rear wheel of a bicycle and in axial alignment with the rear wheel axle; 2) a crank assembly having one or...
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6159118 |
Horizontally disposed bicycle derailleur
A guide pulley mounting mechanism for use with a bicycle derailleur. A rear take-up pulley is mounted to a plunger rod that travels within a plunger frame in a more or less horizontal arrangement...
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6155585 |
Direct drive bicycle
A direct drive bicycle comprising a main frame. Rotatably mounted within the main frame is a variable rate transmission unit having rotatable input and output shafts. Rotatably connected to the...
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6152471 |
Variable pedal driving device of bicycle
A variable pedal driving device for a bicycle, the device allowing the bicycle pedals to slide along crankshafts during operation of the device. Each pedal is coupled to a slide pipe slidably...
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6092822 |
Self-propelled wheelchair
A wheelchair includes a support frame and wheels and casters rotatably cocted to the support frame. A rotatable steering member is slidably connected to a caster swivel support frame for steering...
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6086079 |
Bicycle and the like with chain transmission, multiple gears and pedal unit placed on the outside of the rear wheel
An aerodynamic bicycle that reduces intra-abdominal pressure, improves aerodynamic performance, and improves muscular power efficiency includes various structures to support and hold the driver in...
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6079726 |
Direct drive bicycle
A direct drive bicycle comprising a bicycle frame having a housing attached thereto. Rotatably mounted within the housing is a variable rate transmission unit having rotatable input and output...
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6068279 |
Two wheel drive bicycle
A two wheel drive bicycle has fixed rear wheel and a turnable front wheel, a chain ring rotatable by way of an external rotation force, and a bicycle frame comprising a top tube and a head tube. A...
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6029990 |
Direct drive bicycle
A direct drive bicycle comprising a main frame. Rotatably mounted within the main frame is a variable rate transmission unit having rotatable input and output shafts. Rotatably connected to the...
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6024662 |
Crank arm set
A bicycle chainwheel plate is formed to reduce the weight of a chainwheel crank and to keep its stiffness at a high level. The chainwheel plate is coupled between a crank arm and at least one...
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6024368 |
In line tricycle
The in line tricycle has a horizontal frame (34) having three wheels in line namely: a front wheel (20), an inner rear wheel (24), and an outer rear wheel (26); a chainwheel (22) and its adjuncts...
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6007084 |
Front drive train bicycle
A front drive train bicycle has practically the parts of a simple bicycle. The major difference is in the location of the drive train. The front drive train bicycle has a steerer tube extension...
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5979924 |
Crank assembly for a bicycle
A crank assembly for a bicycle uses a plurality of auxiliary sprockets and chains to achieve high ratios of wheel speed to pedal-rotation speed. The compact crank assembly is especially well suited...
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5964472 |
Independent pedaling system for tandem bicycles
A drive system for a tandem bicycle (10) to allow a captain or a stoker to pedal independently of one another. A unidirectional bearing, e.g., a freewheel assembly (24) is incorporated in a captain...
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5918894 |
Pedal mechanism for cycle and exercise equipment
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...
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5913741 |
Bicycle with three bottom bracket shells and gearing system
A "Unique" bicycle is basically a bicycle having three bottom bracket shells namely, a first bottom bracket shell (70) for the crankset (57), located at the down tube (40), a second bottom bracket...
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5899480 |
Rear suspension for bicycles
A rear wheel suspension for a bicycle includes paired lower arm members pivotally connected to the bicycle frame seat tube such that they can pivot about an axis situated above the center of the...
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5899477 |
Human drive system using synchronized independent pedals with sinusoidal type variable efficiency
A drive mechanism applicable to bicycles for increasing the efficiency of pedaling action via independent pedals with a sinusoidally varying transmission ratio. The drive mechanism achieves...
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5887882 |
Prone bicycle
The present invention is a bicycle which permits the rider to operate the bicycle while in the prone position. A novel sling is provided to support the torso of the rider. The sling is a...
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5884927 |
2-way bicycle drive unit
In a first form, a drive sprocket is driven constantly in a forward direction. It is mounted on a central main shaft. A pair of mutually opposed one-way clutches each have a driving part on the...
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5876053 |
Conveyer drive system
A pedal drive system imparts a rotational force, in part, through linear travel of the pedal. The system comprises parallel, dislocated first and second rotating shafts. A first left sprocket and a...
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5865454 |
Electronically controlled speed change device for bicycles
An electronically controlled speed change device for bicycles has an automatic mode of operation in which, at the request of the cyclist for increase or decrease of the speed ratio, the system...
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5823554 |
Folding, pedal-driven vehicle with universal joint transmission system
A folding, pedal-driven vehicle having a universal joint transmission system is provided. A human-powered ground vehicle having a motive power input assembly that includes foot pedals to drive a...
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5788254 |
Pedal powered vehicle
A light weight, stowable golf cart powered by a pedaled drive train. An enclosed box frame supports three extra wide, non-pneumatic tires which are pedal powered through a push button controlled,...
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5765847 |
Pedal mechanism for cycle and exercise equipment
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...
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5730453 |
Non-tipping tricycle
A tricycle has two non-steerable rear wheels and a single steerable front wheel. One of the rear wheels is driven by a chain-sprocket drive system that includes a drive sprocket mounted on a front...
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5728017 |
Electronic transmission control system for a bicycle or the like
An electro-mechanical system for shifting gears on a multi-gear bicycle or other human-powered vehicle includes a closed loop derailleur position control system using circuitry for measuring...
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5681234 |
Automatic transmission shifter for velocipedes
An automatic speed range shifter for bicycles is disclosed which produces a downshift when a predetermined pedal force is exceeded and which produces an upshift when a predetermined pedal...
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5678837 |
Rear suspension for bicycles
A rear wheel suspension for a bicycle includes paired lower arm members pivotally connected to the bicycle frame seat tube such that they can pivot about an axis situated above the center of the...
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5672133 |
Bicycle gearing system
In combination, a bicycle having a frame and front and rear wheels and a bicycle gearing system which includes a movable bottom bracket mounted on the frame of the bicycle. A pedal axle is...
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5662347 |
Pedal mechanism for cycle and exercise equipment
A Pedal mechanism for a bicycle or similar piece of exercise equipment is disclosed which allows one to apply a forward force to the drive wheel by simultaneously pressing down on both pedals of...
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5662346 |
Pedal mechanism for cycle and exercise equipment
The invention discloses a pedal mechanism for a bicycle or a piece of exercise equipment which allows one to impart forward motion to the drive wheel of the bicycle through an alternating or stair...
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5655982 |
Hydraulic shifting system for rider propelled vehicle
A shiftable variable ratio sprocket chain drive for rider propelled vehicles, such as bicycles, and for other uses has a shifting mechanism, such as a derailleur mechanism or a gear mechanism, a...
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5613918 |
Bidirectional torque responsive belt tensioner
This invention relates to the field of power transmission, and more specially, to a torque responsive belt tensioner for a friction belt. Because of recent concerns for the ecology of our planet...
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5577749 |
Twin gear drive assembly for a bicycle
A twin gear drive assembly for a bicycle comprising a front gear assembly with a plurality of gears for driving the rear gear; for driving the frontal wheel with an associated front derailleur; an...
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5533741 |
Bicylce with a double power train
A bicycle includes a first power train to propel the bicycle forward, a second power train to propel the bicycle forward and backward, and means for setting each of the first and second power...
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5509679 |
Rear suspension for bicycles
A rear wheel suspension for a bicycle includes paired lower arm members pivotally connected to the bicycle frame seat tube such that they can pivot about an axis situated above the center of the...
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5494307 |
Gear shifting apparatus
A bicycle frame supports a sprocket, front and rear wheels and first gears axially aligned with the rear wheel. Each gear has an individual ratio with the sprocket. At a first end, a support is...
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5460396 |
Derailleur mounting assembly for a bicycle
A derailleur mounting assembly for a bicycle having a rear wheel suspension includes a chain stay having a first end connected to a bicycle crank in a manner so as to pivot about the crank axis,...
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5443139 |
Bicycle chain lubrication
An apparatus for cleaning and lubricating a bicycle chain while riding is provided. The apparatus includes a water reservoir, a lubricant reservoir and a device for transporting the lubricant and...
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5425678 |
Elastic joint derailleur
A front or rear derailleur for a bicycle comprising a base, an actuating assembly and a generally U-shaped chain guide. The base is a cylindrically shaped portion of flexible material that attaches...
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5405158 |
Variable ratio belt drive system
A drive system suitable for a bicycle and capable of providing various drive ratios comprising first and second pairs of conical members, each pair including primary and secondary conical members,...
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5403027 |
Bicycle with folding frame
A drive unit of a bicycle includes a crankshaft having a pair of cranks, a chain wheel fixed to the crankshaft, and a free wheel fixed to a rotating shaft of a rear wheel and rotatably mounted on...
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5375865 |
Multiple rider bicycle drive line system including multiple continuously variable transmissions
A tandem bicycle drive train system includes a continuously variable transmission installed around each crank spindle driving an input crank spindle journalled in a continuously variable...
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5337861 |
Back pedal brake for derailleur bicycle
A pedal actuated brake system is provided for retrofitting onto a multi-speed bicycle so that back pedaling applies the brakes. A decoupler disengages the front chain sprocket from the crank when...
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5324057 |
Two-wheel drive cycle
A two-wheel drive cycle comprises a frame, a front fork assembly mounted on the frame through a pivotal connection to steer the cycle, a front wheel rotating on the fork assembly about a first...
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5240267 |
Tricycle
A tricycle (20) disclosed includes a front section (22) and rear section (24). The front section (22) is articulated with respect to the rear section (24) so that the front section (22) can be...
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5224725 |
Two-wheeled-drive two wheeled vehicle
A drive apparatus for driving the front wheel of a two-wheeled vehicle, such as a bicycle, including front wheel transmission to transmit drive from the drive sprocket to the front wheel including...
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5211074 |
Handle device for bicycles
In a handle bar comprising a horizontal straight portion fixed at its center a stem, a pair of U-shaped portions bent from the straight portion forming first grip-holders, a pair of elongated...
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