Security lock

Details Security lock Security lock

1983-10-05

1986-06-10

Wolfe, Robert L.

Locks

Special application

For closures

70150, 70280, 292144, 29216913, E05B 6506

Patent

active

045935432

ABSTRACT:
A solenoid-operated door lock has a pivotally mounted deadlock lever which can lock either a latchbolt or a deadbolt. The locking and release movement of the deadlock lever is controlled by pivoting a release lever which is biased by a spring to maintain the deadlock lever in its selected operating positions. A solenoid-controlled main operating lever pivots to extend or retract the latchbolt or deadbolt through a lost motion connection. The lost motion connection ensures that the deadlock lever is moved to its release position before the latchbolt or deadbolt is retracted into the lock. The lock includes a triggerbolt which is extended when the door is open and is pushed into the lock when the door is closed. Switches are provided to monitor the operational condition of the lock and the position of the door. Indicator lights are provided at a remote guard station to show the operational condition of the lock. A switch is also provided to control the energization current of the solenoid. A thermal protector operates the solenoid at a reduced current for as long as a dangerously high solenoid temperature is detected. A switch is provided to allow an inmate or a guard to electrically unlock the lock, if the switch is activated by the remote guard station.

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