Anti-jamming device for security screens

Safes – bank protection – or a related device – Bank protection devices – Safety transaction and display partitions and counters

Patent

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Details

109 13, 109 21, 49 28, E06B 904

Patent

active

051349434

ABSTRACT:
An anti-jamming device for a security screen arrangement, in which a security screen is able to be rapidly fired from a rest position to an upper position at which passage of a person from one side of the screen to another is not possible, includes sensors for detecting whether the screen is at the rest position or the upper position. The device also includes a valve for lowering a screen when it does not reach the upper position, due to the screen having been jammed, and for reactivating the firing of the screen. The screen may be repeatedly fired until the obstruction is cleared.

REFERENCES:
patent: 1635121 (1927-07-01), Goodman
patent: 2007744 (1935-07-01), Cordray
patent: 2110177 (1938-03-01), Rohrig
patent: 3067700 (1962-12-01), O'Meara et al.
patent: 4831939 (1989-05-01), Cardinal

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