Light signal for door knob and lock assembly

Details Light signal for door knob and lock assembly Light signal for door knob and lock assembly

1986-07-14

1987-08-04

Wolfe, Robert L.

Locks

Parts, attachments, accessories and adjuncts

Condition indicators

70441, 109 38, E05B 4100

Patent

active

046837418

ABSTRACT:
A door knob and lock assembly having a pair of knobs, a latching bolt operable by the rotation of the knobs, and a turn button to selectively arrest the movement of the bolt to place the assembly in locked condition. A battery operated electrical circuit including a switch operable by the turn button, and a light emitting diode mounted within the door knobs so as to be operable on locking the door to provide a flashing light visible from the outside of the door.

REFERENCES:
patent: 3427835 (1969-02-01), Jeffee
patent: 4559796 (1985-12-01), DeForrest

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