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7563185 |
Infinitely variable transmission
An IVT machine includes an input shaft, a drive wheel on the input shaft, an output shaft, a ratio changing device which is mounted on the output shaft, an endless belt which passes over the drive...
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7261655 |
Variable speed flat belt transmission and variable diameter pulley for use in same
A belt drive system employs variable diameter drive and driven pulleys interconnected by a flat belt and operative to vary the rotational speed of the driven pulley as in a variable speed...
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7211014 |
Variable sprocket IVT machine
A variable sprocket IVT machine has a sprocket wheel, on an input shaft, including a plurality of wheel bodies which are independently rotatable on the shaft, a sprocket slidably located in and...
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7156764 |
Extensible chainwheel for a bicycle powertrain assembly
A driving sprocket, or chainwheel, for a bicycle crankset having a toothed ring whose ring is divided into a plurality of segments, the segments being borne by a frame that is rotationally movable...
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6749531 |
Multi-speed gear system for a chain transmission device of a bicycle
A multi-speed gear system for a chain transmission device of a bicycle is provided. The system includes a disc having a front plate, a rear plate, and a plurality of tooth series concentrically...
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6458054 |
Transmission
The present invention provides a transmission capable of surely transmitting power even in a configuration in which the diameter of a rotating body is changed. When movable members of the rotating...
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5468191 |
Variable effective diameter pulleys for variable speed transmission of power
Variable effective diameter pulleys comprise identical interleaved sheaves mounted on identical hubs that in turn engage balls in key ways or splines. A single helical spring within the pulley...
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5443423 |
Variable bolt pin chain belt transmission system
A variable bolt pin chain belt transmission for use in a vehicle, includes a pair of variable bolt pin pulleys having a plurality of bolt pins which are lined in a plurality of circles, a chain...
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5282773 |
Dual range variable speed transmission
A variable diameter belt type power transfer assembly having a drive sheave and a driven sheave, both of which are adjustable and include a pair of opposing coaxial flanges, one of which is axially...
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5074826 |
Variable speed transmission
A variable speed transmission in which the output speed is infinitely adjustable within a given speed range and is accurately controlled. The variable speed transmission includes two pulley...
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4772250 |
Variable transmission gear, particularly for bicycles
Variable transmission gear particularly for bicycles comprising a transmission element such as a chain or a belt which is in engagement with a driving and a driven rosette, one rosette consisting...
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4516960 |
Variable speed chain drive
A variable speed chain drive includes a driven pulley which supports radially adjustable drivers, the drivers defining a wedge-shaped opening in which the chain is received and frictionally...
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4504022 |
Thread feed mechanism and method for textile machines
An expandable feed roller has two separate side-by-side discs fitted on a rotatable drive shaft. Each disc has circumferentially spaced fins extending inward toward the other disc and inclined...
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4498351 |
Continuously variable ratio transmission
This invention provides novel transmission means for interconnecting a rotary output shaft of drive means to a rotary input shaft of means to be driven by the drive means. Basically, the novel...
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4453923 |
Variable diameter pulley assembly
A variable diameter pulley assembly for use with a power transmission belt and adapted to be connected to a shaft comprising opposed sets of axial and radial movable generally triangular or...
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4342559 |
Drive system
A load-responsive variable diameter pulley in a drive system using a driving pulley and a driven pulley functionally connected by a belt. The basic pulley assembly includes two spaced apart...
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4152948 |
Device for increasing diameter of a pulley
A device, for use with a pulley having a substantially cylindrical outer surface with a first circumferential belt groove therein defining a first pitch diameter, for increasing the pitch diameter...
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3861227 |
VARIABLE RATIO DRIVE MECHANISM FOR BICYCLES
The invention relates to a mechanism for varying the drive ratio between the crank and the rear wheel of a bicycle. A single drive chain connects the pedal sprocket to drive any one of a number of...
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3707883 |
POWER TRANSMISSION PULLEY AND MEANS FOR CHANGING THE DIAMETER OF SAME
A power transmission pulley having a metal hub and grooved rim for receiving a belt with a plurality of adaptor rings of plastic material for incrementally changing the diameter of the pulley. Each...
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3604282 |
POSITIVE DRIVE, VARIABLE SPEED STRUCTURE
A positive drive, variable speed structure including an elongated slotted strip cut to length and looped with abutting ends to form a circular belt support and mounting means for the support,...
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3321040 |
Chain sprocket changing means for motorcycles
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3187597 |
Auxiliary sprocket mounting for motorcycle
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3170381 |
Adjustable drum for a rotary exposure unit
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2782649 |
Change speed mechanism
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