Lock mechanism

Details Lock mechanism Lock mechanism

1984-02-06

1987-02-10

Smith, Gary L.

Locks

Operating mechanism

Key

70DIG63, 109 35, 109 57, 292210, E05B 3512, E05G 300

Patent

active

046415076

ABSTRACT:
A protection system for preventing unauthorized entry through a door member. An electrically charged cover is placed over the door member for electrically shocking anyone who attempts unauthorized entry therethrough. An electrical insulator inner cover is placed between the door member and the electrically charged cover. A first lock is provided to lock the door member in a closed position. A second lock is provided to lock the first lock in a locked position.

REFERENCES:
patent: 853485 (1907-05-01), Townsend
patent: 2762216 (1956-09-01), Wasson
patent: 2872241 (1959-02-01), Shelden
patent: 3154938 (1964-11-01), Cohen
patent: 3916657 (1975-11-01), Steinbach
patent: 4033157 (1977-07-01), Williams
patent: 4332153 (1982-06-01), Miles

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