Planetary transmission with a spring applied centrifugally sensi

Details Planetary transmission with a spring applied centrifugally sensi Planetary transmission with a spring applied centrifugally sensi

1982-02-26

1984-05-29

Herrmann, Allan D.

Machine element or mechanism

Gearing

Plural power paths to and/or from gearing

74752E, F16H 374, F16H 5710

Patent

active

044507356

ABSTRACT:
A planetary transmission has a fluid applied brake for a low speed ratio and a fluid release spring applied clutch for a high speed ratio. The clutch apply springs respond to a centrifugally actuated member such that below a predetermined output speed, the springs are not compressed sufficiently to cause engagement of the clutch. The clutch is maintained disengaged by the fluid pressure which engages the brake regardless of output speed. The interchange of the brake and clutch are selectively controlled by controlling the fluid pressure source.

REFERENCES:
patent: 2116234 (1938-05-01), Cotterman
patent: 2140690 (1938-12-01), Cotterman
patent: 2189220 (1940-02-01), Osborne
patent: 2198072 (1940-04-01), Banker
patent: 2270536 (1942-11-01), Lenning
patent: 2427346 (1947-09-01), Banker
patent: 2445561 (1948-07-01), Carnagua
patent: 2985037 (1961-05-01), Schoenle et al.
patent: 3327565 (1967-06-01), Grattan
patent: 3978742 (1976-09-01), Abbott
patent: 4123952 (1978-11-01), Wayman

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