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6432009 |
Continuously variable transmission
A continuously variable transmission that comprises an input shaft to which torque may be applied, an adjustable gearing mechanism, and a driven element. The adjustable gearing mechanism is...
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5984814 |
Variable ratio chain drive transmission
A chain drive transmission has a variable diameter sprocket. The sprocket has a number of sectors which can be moved radially relative to a hub of the sprocket. The sectors are biased outwardly but...
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4836046 |
Automatic bicycle transmission
An automatic bicycle transmission includes in combination a sprocket wheel assembly which is responsive to the input torque applied at the pedals, a chain takeup assembly to maintain the chain taut...
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4642070 |
Automatic variable speed transmission
A multi speed transmission mechanism for use on a bicycle, for example, wherein pressure on the pedal by the operator decreases or increases the diameter of the driver sprocket wheel to alter the...
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4493678 |
Expandible sprocket
A variable sprocket, particularly suitable for a bicycle transmission, comprising a drive flange and an indexing flange mounted on an axle with a pair of sprocket-segment-planets and at least two...
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4373926 |
Automatic transmission having a continuously variable drive ratio
An automatic transmission comprises a first rotating assembly coupled via a bias member to a second rotating assembly. The second rotating assembly varies its effective diameter in response to the...
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4273240 |
Variable pitch sprockets for conveyor system
A conveyor system which includes at least one drive sprocket and a plurality of idler sprockets to mesh with a continuous conveying member adapted to carry the work load. Support structure is...
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4260386 |
Variable speed drive
A variable ratio, or adjustable ratio, mechanical drive mechanism employs a rotatable driving element the effective diameter of which may be changed. The driving element is segmented to permit...
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3969948 |
Automatic bicycle transmission
An automatically variable speed ratio transmission for a pedal driven vehicle such as a bicycle with a chain and sprockets. A pedal operated chain driving sprocket is capable of having its diameter...
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3005619 |
Chuck units for a tire spreader
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