Security vestibule entry for controlled access to banks and the like
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United States of America Patent
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-
May 29, 1990
Grant Date -
N/A
app pub date -
Aug 24, 1988
filing date -
Aug 28, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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