Lock

Details Lock Lock

1974-04-08

1976-07-06

Gilliam, Paul R.

Closure fasteners

Latch-spindle catches

70210, 70283, 70DIG3, E05B 1300, E05B 1310, E05B 4704

Patent

active

039678466

ABSTRACT:
A door lock has a frame in which a knob spindle is mounted for rotation about an axis. The spindle can be prevented from rotation on the frame by a bar movable along the axis into and out of a position in which the bar engages both the frame and a slot in the spindle. The bar is moved by a spring and by a manual button mounted in an inside knob on the frame. The spindle can also be prevented from rotation on the frame by a pin radially movable on the frame into and out of a position in which the pin engages both the frame and the spindle slot. The pin is moved by a spring and by an arcuate electromagnet disposed coaxially of the spindle and having a polepiece in position to influence an armature on the pin. The customary key-operated lock is installed in an outer knob fastened onto the spindle.

REFERENCES:
patent: 1691528 (1928-11-01), Schlage
patent: 1956388 (1934-04-01), Kalina
patent: 2732703 (1956-01-01), Noregaard
patent: 2834194 (1958-05-01), Schlage et al.
patent: 2910859 (1959-11-01), Allen et al.
patent: 3456974 (1969-07-01), Moore

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