Locks – Operating mechanism – Using a powered device
Patent
1996-03-29
2000-09-12
Saether, Flemming
Locks
Operating mechanism
Using a powered device
70271, 70432, 70DIG59, 292348, 292352, E05B 4900
Patent
active
061160660
ABSTRACT:
An electronic combination lock having a dial-shape handle with a keypad incorporated therein is disclosed. Rotation of the handle extends or retracts a bolt that closes or opens the lock. The keypad includes indicia that give the user visual cues as to the orientation of the handle, thereby informing the user of the extended or retracted condition of the bolt. A battery pack is used to energize circuitry that recognizes a code entered through the keypad. The circuitry provides a control signal that activates a solenoid to extend or retract a bolt blocking device, which in turn prevents or enables movement of the bolt. A visual indicator warns of a low voltage or power condition in the battery pack. Electrical contacts are provided in the face plate of the handle to connect the circuitry to an external power source in case the battery pack fails.
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La Gard, Safe Gard Digital Combination Lock (Brochure), Copyright 1991, Front and Back.
Butterweck Dieter
Gartner Klaus W.
Phillips Peter J.
Estremsky Gary
Saether Flemming
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