Anti-thief key lock for vending machines

Details Anti-thief key lock for vending machines Anti-thief key lock for vending machines

1988-05-02

1989-06-13

Wolfe, Robert L.

Locks

Special application

For control and machine elements

70366, 70417, E05B 2904, B60R 2502

Patent

active

048380555

ABSTRACT:
A key lock having a hardened steel plug that protects the internal tumblers from attack by vandals or thieves. The lock includes a high strength locking bolt that is biased to its latching position by a novel coil spring; a stabilizer rod extends within the spring to prevent lateral buckling of the spring convolutions.

REFERENCES:
patent: 615207 (1898-11-01), Babcock
patent: 1306386 (1919-06-01), Malone
patent: 1819813 (1931-08-01), Ellenberger
patent: 3089330 (1963-05-01), Kerr
patent: 3204438 (1965-09-01), Sollenberger
patent: 3695073 (1972-10-01), Prescott
patent: 4062211 (1977-12-01), Miller
patent: 4195503 (1980-04-01), Roberts

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