Machine element or mechanism – Mechanical movements – Rotary to rotary
Patent
1987-05-07
1989-01-31
Staab, Lawrence J.
Machine element or mechanism
Mechanical movements
Rotary to rotary
74750B, F16H 2142
Patent
active
048007684
ABSTRACT:
A transmission means for transmitting power between input and output drives in which a rack and pinion gear assembly and a cam adjacent the pinion cooperate with the drives to provide a variable gear ratio therebetween. The gear assembly includes inner and outer gear rack pairs, in which such gear rack pair has oppositely facing toothed rack portions which are spaced apart sufficiently to receive the pinion gear and cam therebetween, with an outer surface of the cam adjacent at least one of the oppositely facing toothed rack portions. Resilient connectors interconnect the end portions of each pair of toothed rack portions to as to permit limited resilient movement between the rack portions of each pair. A rotor engages the rack pairs to transmit that power therebetween. Preferably, a gear ratio changer can vary spacing between input and output axes in such a direction as to provide a favourable change in effective radius of action of the drive in addition to the gear ratio resulting from the rack and pinion gear assembly.
REFERENCES:
patent: 1435838 (1922-11-01), Gill
patent: 2069007 (1937-01-01), Fontana
patent: 2183193 (1939-12-01), Husson
patent: 3087355 (1963-04-01), Bassereau
patent: 3490299 (1970-01-01), Binner
patent: 3750485 (1973-08-01), Blakemore
patent: 3913749 (1975-10-01), Wyers
patent: 3995508 (1976-12-01), Newell
patent: 4181043 (1980-01-01), Waddington
patent: 4411165 (1983-10-01), Evans
patent: 4475412 (1984-10-01), Evans
patent: 4665762 (1987-05-01), Russell
patent: 4701152 (1987-10-01), Dutil et al.
4N Developments Ltd.
Staab Lawrence J.
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