Four-speed automatic transmission

Details Four-speed automatic transmission Four-speed automatic transmission

1996-12-09

1998-09-01

Lorence, Richard M.

Planetary gear transmission systems or components

With means to vary drive ratio or disconnect drive

Plural elements selectively braked

475277, F16H 362

Patent

active

058003037

ABSTRACT:
A four-speed automatic transmission for a vehicle includes a transmission housing, an input member, an output member, three planetary gearsets for changing a ratio of torque between the input member and the output member, a plurality of clutch assemblies to selectively couple the input member to predetermined gears of the planetary gearsets, a plurality of brake assemblies to selectively couple predetermined gears of the planetary gearsets to the transmission housing, and a structure for allowing the output member and a planetary carrier from one of the planetary gearsets and an annulus gear of another of the planetary gearsets to rotate simultaneously.

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patent: 5536220 (1996-07-01), Martin
Powerful Revolution: Three New V-8 Models Launch The BMW 5 Series for 1994; BMW of North America, Inc. Press Release.
BMW 540i In Which a Good Eight Replaces a Great Six in The Old Five; Car and Driver; By John Phillip; Sep. 1993; pp. 79-82.
See Serial No: 08/271,313, Filed: Jul. 6,1994.
See Serial No.08/190,958, Filed: Feb. 3, 1994.
See Serial No. 08/271,314, Filed: Jul. 6, 1994.

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