Security vestibule entry for controlled access to banks and the

Details Security vestibule entry for controlled access to banks and the Security vestibule entry for controlled access to banks and the

1988-08-24

1990-05-29

Dorner, Kenneth J.

Movable or removable closures

Arcuate closure rotates across arcuate opening

49 42, E06B 334

Patent

active

049284290

ABSTRACT:
In a security vestibule entry for controlled access to banks and the like enclosures, two walls of the vestibule have substantially circular arc bases, different diameters, and respective angular breadths whose sum is at least 360.degree., being mounted on respective concentrical circular tracks and forming vestibule doors. The security vestibule is reliable, simple in construction, and compact in size.

REFERENCES:
patent: 4545630 (1985-10-01), Izumi et al.

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