Locks – Operating mechanism – Using a powered device
Patent
1994-11-29
1998-12-15
Lindsey, Rodney M.
Locks
Operating mechanism
Using a powered device
70279, E05B 4900
Patent
active
058485414
ABSTRACT:
A retrofit door knob assembly is adapted to fit within an aperture in a door in place of a conventional mechanical lock assembly. The retrofit door knob assembly is similar in appearance to a conventional door handle assembly, but includes a motor coupled to a latch, and suitable electrical and mechanical key inserts for receiving separate electrical and mechanical keys. Either a mechanical or electrical key can operate the latch. The electrical key insert includes a data probe within the handle for receiving the electrical key and the electrical key is provided with a means for gripping to allow a user to turn the handle with the key after the latch is unlocked by the motor.
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Bolan Michael L.
Fekete Nicholas M. G.
Glick Mark
Owens Jeffrey D.
Dallas Semiconductor Corporation
Estremsky Gary
Lindsey Rodney M.
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