Anti-theft steering shaft lock

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

1990-07-20

1991-10-01

Bertsch, Richard A.

Motor vehicles

With means for promoting safety of vehicle, its occupant or...

By preventing unauthorized or unintended access or use

70245, 74477, B60R 2506

Patent

active

050525093

ABSTRACT:
An anti-theft steering shaft lock on an automobile steering column includes a keeper rotatable as a unit with a steering shaft of the steering column, a dead bolt slidable into and out of a slot in the keeper to immobilize the steering shaft, a transmission shift lever rotatable about a transverse axis of the steering column, a connecting rod between the shift lever and the dead bolt for withdrawing the dead bolt from the keeper slot when the shift lever is rotated from a PARK position to an operating range position, and a blocker on the steering column connected to an ignition lock on the steering column operative to prevent withdrawal of the dead bolt from the keeper when the ignition is locked. The mechanical advantage attributable to the length of the shift lever affords relatively effortless withdrawal of the dead bolt from the keeper against residual torque induced friction between the dead bolt and the keeper slot.

REFERENCES:
patent: 1827732 (1931-10-01), Conlan
patent: 4249404 (1981-02-01), Kimberlin
patent: 4258560 (1981-03-01), Jessop
patent: 4270624 (1981-06-01), Jessop
patent: 4326432 (1982-04-01), Miller
patent: 4821605 (1989-04-01), Dzioba
patent: 4934209 (1990-06-01), Dewitt et al.

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