Multiple speed powershift transmission providing synchronous spe

Details Multiple speed powershift transmission providing synchronous spe Multiple speed powershift transmission providing synchronous spe

1997-12-17

1999-02-09

Marmor, Charles A.

Planetary gear transmission systems or components

With means to vary drive ratio or disconnect drive

Plural elements selectively braked

475269, 475296, F16H 362

Patent

active

058686444

ABSTRACT:
A multiple-speed epicyclic transmission produces speed ratios in response to movement of a brake band among components of the gearset and subsequent engagement with the gearset component that corresponds to the desired gear ratio. The brake band is biased into engagement with a corresponding gearset component by a spring and is released from that engagement using a hydraulic or electric actuator. A cartridge moves the band to the gearset component that must be held fixed against rotation to produce the desired gear ratio. Engagement of the brake band with a brake drum or ring gear holds the corresponding gearset component against rotation on the transmission housing.

REFERENCES:
patent: 787908 (1905-04-01), Ford
patent: 1005186 (1911-10-01), Ford
patent: 1009954 (1911-11-01), Briones
patent: 1073569 (1913-09-01), Ford

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