Locks – Operating mechanism – Key
Patent
1987-04-03
1988-05-31
Wolfe, Robert L.
Locks
Operating mechanism
Key
70424, 70398, 70399, E05B 1714
Patent
active
047472820
ABSTRACT:
The keyway of an automobile ignition lock can be protected by a key-shaped element which is secured by a combination lock to substantially preclude tampering with the automobile ignition lock. The guard device can be removed from the ignition lock keyway upon setting of the combination lock dials to the release position, and the regular ignition key can then be used with the ignition lock.
REFERENCES:
patent: 119851 (1871-10-01), Jenny
patent: 442778 (1890-12-01), Metzger
patent: 942537 (1909-12-01), Batdort
patent: 947913 (1910-02-01), Jenkins
patent: 1000962 (1911-08-01), Blais
Arnhem Erik M.
Wolfe Robert L.
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