Continuously variable ratio transmission and method

Planetary gear transmission systems or components – Planet periphery surrounds axis of interacting gear – Means to change speed ratio between input and output

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Details

74117, 74120, 464 39, 464180, 464182, F16H 2906, F16H 2918, F16H 132, F16C 300

Patent

active

056741448

ABSTRACT:
A transmission having ratios from 0:1 to 1:1 is disclosed; the transmission comprises a plurality of clutches for producing a partial rotational output from a reciprocating input, an output gear for collecting the partial output of the clutches, an input gear for providing rotational input to a varicrank (i.e. an index plate/web shaft slidably and rotably disposed in a rotatable cylindrical block), and a varicrank (i.e. an index plate/web shaft slidably and rotatably disposed in a rotatable cylindrical block) for producing reciprocal motion on the clutches. The varicrank has a variably offset center web member having a plurality of connecting rods secured thereto corresponding to the number of clutches and a plurality of crank arms pivotally secured to the connecting rods. The ratio of the transmission is adjusted by moving a ratio control rod which increases or decreases the amount of offset of the center web, and accordingly the amount of reciprocating motion applied to the crank arms by the connecting rods.

REFERENCES:
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patent: 5226859 (1993-07-01), Pires
patent: 5334115 (1994-08-01), Pires
patent: 5454766 (1995-10-01), Mills
Speed Gear Regulated Through Variable Throw Crank. Product Engineering, Aug. 1947, p. 105.

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