Gate closing timer for security gate override system

Details Gate closing timer for security gate override system Gate closing timer for security gate override system

2006-12-12

2006-12-12

Hofsass, Jeffery (Department: 2636)

Communications: electrical

Condition responsive indicating system

With particular system function

C318S016000, C049S025000, C049S041000

Reexamination Certificate

active

07148798

ABSTRACT:
A solid state programmable timer attaches with two wires across the two contacts for the key circuit of the PC board controlling a security gate and two wires to the emergency personnel remote key switch. A timed cycle is activated by an emergency personnel key opening the security gate. When the timed cycle ends the timer causes the closing of the security gate allowing it to resume normal operation without the need for the emergency personnel key. The timer is pre-programmed with the amount of time normally required for an emergency operation.

REFERENCES:
patent: 4796011 (1989-01-01), Lemirande et al.
patent: 6091217 (2000-07-01), Parsadayan
patent: 6437527 (2002-08-01), Rhodes et al.
patent: 6469464 (2002-10-01), McCall
patent: 6611205 (2003-08-01), Guthrie et al.
patent: 6819071 (2004-11-01), Graham et al.
patent: 6891479 (2005-05-01), Eccleston
patent: 2002/0153854 (2002-10-01), Reed et al.

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