Dual electronic lock for human passage door

Details Dual electronic lock for human passage door Dual electronic lock for human passage door

1990-02-12

1992-08-11

Wolfe, Robert L.

Locks

Operating mechanism

Using a powered device

70311, 70278, E05B 4700

Patent

active

051368706

ABSTRACT:
An electronic door lock is provided with a single control knob used for entering a predetermined combination through manipulation of the knob in a first arc of rotation, the code being entered by pushing the dial inwardly to bring a push pad into contact with individual ones of an arcuate array of electrical switches provided on a printed circuit board within the lock dead housing, the release of the door locking bolt being accomplished after entry of the predetermined code by further manipulation of the control knob through remaining portions of knob rotation which are unavailable until after entry of the predetermined code. A digitally operated code input pad assembly is also provided to enter such code and a second code to open a second lock mechanism associated with the door spring bolt giving two levels of security for the human passage door.

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patent: 4745784 (1988-05-01), Gartner
patent: 4899562 (1990-02-01), Gartner

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