Locks – Operating mechanism – Using a powered device
Patent
1990-07-31
1992-09-01
Luebke, Renee S.
Locks
Operating mechanism
Using a powered device
70279, 70303A, E05B 4700
Patent
active
051428903
ABSTRACT:
An electronic lock for a safe door is provided with a digital keypad entry device, a mechanical bolt works and associated handle for retracting the door bolts, and a spring biased rotary bolt which engages and precludes operation of the bolt works, such that upon entry of the predetermined code into the entry device, an electric signal causes a solenoid to energize and retract its armature from a blocking position relative the rotary bolt, further enabling the rotary bolt to rotate against its bias in response to mechanical manipulation of the handle by the user to retract the door bolts. Unauthorized operation of the safe handle causes the rotary bolt to be locked into a fixed position, preventing entry into the safe.
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Gartner Klaus W.
Herrmann John
Phillips Peter J.
Uyeda Alan K.
Dino Suzanne L.
La Gard, Inc.
Luebke Renee S.
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