Security doors

Details Security doors Security doors

1982-08-31

1984-11-13

Mancene, Gene

Safes, bank protection, or a related device

Bank protection devices

Trapping mechanisms

109 6, 49 30, 49 68, F05G 502

Patent

active

044818874

ABSTRACT:
A security door and system for installation as the entrance and exit to a building or office to automatically control the passage of persons therethrough and to trap certain persons therein comprising a vestibule having side walls and oppositely disposed doors which open and close automatically under the control of photocell detectors and time delay relays. The photocells energize motors which open a respective door through which the person may enter the unit. After a predetermined time delay the opposite door opens. An emergency switch is provided to override the automatic control so that a person can be trapped and detained within the vestibule if desired or necessary.

REFERENCES:
patent: 2405710 (1946-08-01), Phillips
patent: 3669038 (1972-06-01), Watson

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