Shift actuator for a transmission

Machine element or mechanism – Gearing – Interchangeably locked

Reexamination Certificate

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Details

C074S473120, C074S473230

Reexamination Certificate

active

07059209

ABSTRACT:
A shaft actuator for a transmission. A first electromagnetic solenoid is provided to operate a shifting mechanism of the transmission to a first shifted position. A second electromagnetic solenoid is provided to operate the shifting mechanism to a second shifted position. A neutral operation member is mounted on the shifting mechanism to bring the shifting mechanism to a neutral position lying between the first shifted position and the second shifted position. A neutral limitation member can move to a first position, where the neutral operation member is permitted to be operated to the first shifted position and to the second shifted position, and to a second position, where the neutral operation member is brought to the neutral position. An electromagnetic solenoid for neutral can bring the neutral limitation member to the second position.

REFERENCES:
patent: 4631984 (1986-12-01), Jones
patent: 5261456 (1993-11-01), Patton et al.
patent: 6487927 (2002-12-01), Sputhe
patent: 6880422 (2005-04-01), Yamamoto
patent: 6889573 (2005-05-01), Hayashi et al.
patent: 2003/0000323 (2003-01-01), Suzuki et al.
patent: 33 668 (1964-12-01), None
patent: 101 02 031 (2001-09-01), None
patent: 1 225 374 (2002-07-01), None
patent: 1 275 886 (2003-01-01), None
patent: 2004293680 (2004-10-01), None

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