Stepless transmission mechanism

Details Stepless transmission mechanism Stepless transmission mechanism

1987-05-15

1988-08-23

Staab, Lawrence

Machine element or mechanism

Mechanical movements

Rotary to intermittent unidirectional motion

741255, 74793, 74 63, 74393, 74437, F16H 342

Patent

active

047651954

ABSTRACT:
A stepless transmission of the non-friction type is provided using intermeshing non-circular gears. The transmission is made up of a number of angular velocity modulators each having first, second, and third shafts. Each shaft carries a non-circular gear thereon which meshes with the gear of a succeeding shaft. The angular velocity ratio .omega. of the third shaft of each modulator relative to the first shaft depends on the pitch curve of the intermeshing non-circular gears and on the position of the third shaft relative to the position of the first and second shafts. By changing the position of the third shaft the angular velocity ratio .omega. of the modulator can be steplessly varied. The output of the third shafts of each modulator are combined onto a common shaft by one the clutches to provide a continuous output. The position of the third shafts, and thus the overall ratio of the transmission, may be controlled automatically by a spring.

REFERENCES:
patent: 1409900 (1922-03-01), Adams
patent: 1807889 (1931-06-01), Belin
patent: 2239313 (1941-04-01), Beschkine
patent: 2933940 (1960-04-01), Hallden
patent: 3424021 (1969-01-01), Freudenstein
patent: 3605515 (1971-09-01), Lecavelier et al.
patent: 3919895 (1975-11-01), Kerr
patent: 4055091 (1977-10-01), Kerr
patent: 4685348 (1987-08-01), Takami

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