Security system for selectively allowing passage from a non-secu

Details Security system for selectively allowing passage from a non-secu Security system for selectively allowing passage from a non-secu

1982-06-08

1986-05-06

Dorner, Kenneth J.

Safes, bank protection, or a related device

Bank protection devices

Trapping mechanisms

109 6, 109 38, 382 2, E05G 300

Patent

active

045864411

ABSTRACT:
A security system for allowing selective access to a secured area generally comprises first and second three wing center shaft ganged revolving door structures, each partially surrounded by upright facing curved side walls disposed in spaced apart relationship to define a mid-zone. A digital combination lock at the first entryway provides initial access. Any two wings of the revolving doors have an angular span less than that traversed by each side panel to define a lockable detection chamber. A gas ionization explosives detector is coupled to the detection chamber. The mid-zone comprises metal and X-ray detectors and a hand geometry reader. The second revolving door has an entryway actuatable by a pass card reader. The second revolving door provides access to the secure region.
In operation, an individual seeking access punches a combination lock releasing the first revolving door allowing the wings to rotate and then lock, enclosing a detection chamber in which the individual is confined. The explosives detector is actuated and samples air from the chamber to determine if explosives are present. A negative detection response releases the center shaft, the wings rotatable to a position allowing entry to the mid-zone. The individual then passes across the metal detector. Personal belongings are passed through the X-ray device. A badge, obtained at a guard station after palm reader identification, actuates the second revolving door, allowing access to the secure region.

REFERENCES:
patent: 3576538 (1971-04-01), Miller
patent: 3648240 (1972-03-01), Jacoby et al.
patent: 3750158 (1973-07-01), Anastassakis
patent: 4060039 (1977-11-01), Lagarrigue
patent: 4063519 (1977-12-01), Pretini
patent: 4341165 (1982-07-01), Calandritti et al.
patent: 4385469 (1983-05-01), Scheuerpflug et al.
"New Portable Explosives Detector-Intex Model J-7" and Model J-8 Pause Type Explosives Detector Intex, Inc., Bethesda, Maryland (First Production for Sale, Mar. 1981).

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