Protective door systems

Details Protective door systems Protective door systems

1980-01-10

1982-01-05

Machado, Reinaldo P.

Safes, bank protection, or a related device

Bank protection devices

Trapping mechanisms

109 21, G08B 1300, H04N 718, E06B 500

Patent

active

043088031

ABSTRACT:
A protective door system is provided by a fixed wall and a mobile wall which has the shape of a sector of a cylinder with its axis arranged vertically. The mobile wall is rotatable about said axis between first and second operational positions. In the first operational position a first aperture is opened between the fixed and mobile walls which allows entry of a person from the exterior into a space between the walls and the walls co-operate to prevent passage from the space into the protected room. In the second operational position, a second aperture is opened between the walls which allows a person in the space to pass into the room and the walls co-operate to prevent passage from the exterior into the space. Automatic control means are provided for blocking the passage through the door of any unwanted persons.

REFERENCES:
patent: 1611787 (1926-12-01), Snavely
patent: 2283542 (1942-05-01), Dorsey
patent: 3045615 (1962-07-01), Atchison
patent: 4060039 (1977-11-01), Lagarrigue
patent: 4174594 (1979-11-01), Panzini

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