Actuator for shift-by-wire automatic transmission system

Details Actuator for shift-by-wire automatic transmission system Actuator for shift-by-wire automatic transmission system

2007-07-10

2007-07-10

Le, David D. (Department: 3681)

Planetary gear transmission systems or components

Electric or magnetic drive or control

With electric or magnetic controlled brake

C475S149000, C475S153000, C475S154000, C475S156000, C475S157000, C475S317000, C192S226000, C188S001120, C188S031000, C188S156000, C188S158000, C188S161000, C188S163000, C188S171000

Reexamination Certificate

active

10985809

ABSTRACT:
An electric actuator for an automatic transmission includes an adapter to transmit rotary motion between the adapter and the transmission. An electric motor has an output shaft operably connected the adapter by a gear set which includes a ring gear. A release mechanism includes a solenoid which selectively moves a lock member. In a first position, the lock member engages the ring gear to lock the ring gear so that the adapter is rotated by rotary motion of the output shaft and the adapter rotates to a predetermined zone about a desired gear position. In a second position, the lock member is out of engagement with the ring gear to permit rotation of the ring gear so that the adapter is rotated by internal forces of the transmission and the adapter automatically self-aligns to the exact desired gear position when the adapter is within the predetermined zone.

REFERENCES:
patent: 2655820 (1953-10-01), Baines
patent: 5378210 (1995-01-01), Teraoka
patent: 6196078 (2001-03-01), DeJonge et al.
patent: 6199442 (2001-03-01), Bauer et al.
patent: 6428442 (2002-08-01), Turgay et al.
patent: 6484598 (2002-11-01), Peter
patent: 2002/0134185 (2002-09-01), Tsuzuki et al.

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