Lock structure for entry and exit passages of sensitive installa

Details Lock structure for entry and exit passages of sensitive installa Lock structure for entry and exit passages of sensitive installa

1981-04-27

1983-05-31

Downey, Kenneth

Movable or removable closures

Arcuate closure rotates across arcuate opening

109 8, E06B 324

Patent

active

043854699

ABSTRACT:
A lock structure is disposed in entry and exit passages of sensitive installations, especially nuclear installations, wherein a housing with a revolving gate is arranged in a wall through which said passages extend. Radiation and metal detectors are associated with the lock structure so as to detect radioactive material or weapons being carried through the lock structure. The revolving gate is lockable by latches activated by the detectors so as to lock the revolving gate and prevent passage upon detection of gamma radiation or metal objects.

REFERENCES:
patent: 1965030 (1934-07-01), Clark
patent: 3085464 (1963-04-01), Touvay
patent: 3285209 (1966-11-01), Pacel
patent: 3658277 (1972-04-01), Anderson
patent: 3779178 (1973-12-01), Riseley, Jr.
patent: 4060039 (1977-11-01), Lagarrique
patent: 4122783 (1978-10-01), Pretini

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