Park position locking system for steering column transmission sh

Details Park position locking system for steering column transmission sh Park position locking system for steering column transmission sh

1996-11-20

1998-12-29

Bonck, Rodney H.

Interrelated power delivery controls, including engine control

Transmission control

With brake control

1922202, B60K 4128, B60K 4126

Patent

active

058533486

ABSTRACT:
A system for selectively locking a steering-column-mounted transmission shifter in a park position that places the transmission in one of two neutral positions. An electrically operated shift lock releasably locks the shifter in park position. The shift lock is under the control of an electric circuit that contains first and second shift lock relays having normally open contacts connected in series to the shift lock. The electric circuit operatively couples the relays' coils with the ignition switch, a transmission neutral position sensing switch, and a service brake sensing switch. When the service brakes are applied and the ignition switch is on, the shift lock is operated to release the shifter, allowing the shifter to be moved to other positions.

REFERENCES:
patent: 3994183 (1976-11-01), Markl et al.
patent: 4473141 (1984-09-01), Mochida
patent: 5018610 (1991-05-01), Rolinski et al.
patent: 5062509 (1991-11-01), Carpenter et al.
patent: 5211271 (1993-05-01), Osborn et al.
patent: 5220984 (1993-06-01), Ruiter
patent: 5314049 (1994-05-01), Nordstrom
patent: 5601162 (1997-02-01), Heimann
patent: 5647818 (1997-07-01), Moody
patent: 5706703 (1998-01-01), Kim

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