Security enclosures

Details Security enclosures Security enclosures

1981-02-02

1984-09-11

Wolfe, Robert L.

Locks

Attack-actuated defeating mechanisms

70 17, 70333R, 70417, E05B 6300

Patent

active

044702752

ABSTRACT:
The door of a security enclosure has boltwork and a primary lock for locking the boltwork in its thrown condition. A drill-resistant disc is rotatably mounted between the lock and the exterior of the door, and the restraining wire of a relocker passes over the circumference of the disc. If a drilling attack is made on the lock the disc will be encountered and will be rotated by the drill tip to frustrate penetration of the disc by the drill. Furthermore, if the drill is aimed at the circumferential portion of the disc which guides the relocker wire any success in penetrating the disc will sever or dislodge the wire to allow the relocker to move under the action of a spring into a position in which it provides an additional locking action in the boltwork.

REFERENCES:
patent: 1384509 (1921-07-01), Blecksmith
patent: 1448525 (1923-03-01), Dillon
patent: 1550953 (1925-08-01), Dillon
patent: 3083563 (1963-04-01), Greenwald

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