Incrementally variable transmission

Details Incrementally variable transmission Incrementally variable transmission

1986-10-27

1988-01-05

Novosad, Stephen J.

Endless belt power transmission systems or components

Pulley with expansible rim means or pulleys with alternately...

Structure for variably adjusting radius of rim section

474 56, F16H 5530, F16H 5554

Patent

active

047173696

ABSTRACT:
An incrementally variable transmission, particularly suitable for a bicycle, having a variable-sprocket mounted on an axle having crank-arms. The variable-sprocket comprises a drive-flange and a indexing-flange, a pair of sprocket-segment-planets and at least a pair of idler-planets connected to the flanges, the planets adapted to expand and contract in response to a relative rotation of the flanges and thereby increase and decrease, respectively, the effective diameter of the variable-sprocket, and the sprocket-segment-planets are arranged along an imaginary line defined by said crank-arms.

REFERENCES:
patent: 4325702 (1982-04-01), Jacobsson et al.
patent: 4493678 (1985-01-01), Husted

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