Anti-theft steering shaft lock

Details Anti-theft steering shaft lock Anti-theft steering shaft lock

1989-06-26

1990-02-27

Wolfe, Robert L.

Locks

Special application

For automotive vehicles

70184, B60R 2502

Patent

active

049035118

ABSTRACT:
An anti-theft steering shaft lock having a lost motion connection between the steering shaft and a stationary lock keeper on the steering column to dissipate restoring torque on the steering shaft after the driver locks the steering shaft so that subsequent withdrawal of a lock bolt from the lock keeper is not impeded. The lost motion connection includes a lost motion sleeve slidably and rotatably supported on the steering shaft and carrying the lock bolt thereon, a drive pin on the steering shaft received in a V-shaped notch in an end of the lost motion sleeve, a relatively low rate spring biasing the lost motion sleeve against the pin, and a relatively high rate spring which is engaged by the lost motion sleeve after a predetermined angular interval of relative rotation between the steering shaft and the lost motion sleeve to effectively prevent further relative rotation and thereby render the shaft unsteerable.

REFERENCES:
patent: 1341281 (1920-05-01), Randolph
patent: 1381000 (1921-06-01), Mueller
patent: 1487863 (1924-03-01), Lavigne
patent: 3566633 (1971-03-01), Borck
patent: 3566634 (1971-03-01), Borck
patent: 3732710 (1973-05-01), Rhodes et al.
patent: 4552000 (1985-11-01), Lipschutz
patent: 4559795 (1985-12-01), Zagoroff
patent: 4570468 (1986-02-01), Bemm et al.
patent: 4750380 (1988-06-01), Hoblingre et al.

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