Tamperproof lock

Details Tamperproof lock Tamperproof lock

1999-03-30

2000-06-27

Gall, Lloyd A.

Locks

Operating mechanism

Key

70387, 70419, 70492, E05B 2904

Patent

active

060792396

ABSTRACT:
A tamperproof lock includes a housing of a cylindrical construction, and a lock body located in the cylindrical housing. The lock body is rotatably located in the housing such that the lock body can be turned by a key which is inserted thereinto. As the lock body is turned a predetermined angle by the key, the lock body is disengaged with the housing.

REFERENCES:
patent: 596237 (1897-12-01), Damon
patent: 1406567 (1922-02-01), Lochina
patent: 2439099 (1948-04-01), Ressetar
patent: 2552012 (1951-05-01), O'Kane
patent: 2682764 (1954-07-01), Kotab
patent: 4061004 (1977-12-01), Pappanikolaon
patent: 4104898 (1978-08-01), Fois
patent: 5163310 (1992-11-01), Wang

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