Multiple speed automotive transmission

Details Multiple speed automotive transmission Multiple speed automotive transmission

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

058686452

ABSTRACT:
A multiple speed transmission producing a gear ratio in response to movement of a gear selector lever and manipulation of a clutch pedal includes three planetary gearsets each including a sun gear, ring gear, carrier rotatably supporting a set of planet pinions in continues meshing engagement with the corresponding sun gear and ring gear, and a brake drum driveably connected to one component of each gearset and adapted for alternate engagement by a brake band. The brake band is biased into engagement with the corresponding brake drum by a spring and is released from that engagement using a clutch pedal. A shift lever moves the band to the gearset that produces the desired gear ratio. Engagement of the brake band with each of the drums holds a component of the gearset 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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