Electrically controlled door lock

Details Electrically controlled door lock Electrically controlled door lock

1987-03-09

1988-04-12

Gall, Lloyd A.

Closure fasteners

Latch-spindle catches

70283, 70467, 70469, F05R 1300

Patent

active

047369701

ABSTRACT:
A latch bar is connected to the plunger of a solenoid and is movable endwise to release an exterior knob spindle to enable the spindle to actuate a latch bolt retractor. A latch carried by the latch bar is held by the retractor to maintain the latch bar open until the retractor is later actuated by the spindle, thereby enabling a single electric pulse to effect release of the lock bar.

REFERENCES:
patent: 1378200 (1921-05-01), Stolberg
patent: 1447852 (1923-03-01), Huttemann
patent: 1611838 (1926-12-01), Malicki
patent: 1833572 (1931-11-01), Hardesty
patent: 2162048 (1939-06-01), Askew
patent: 2242508 (1941-05-01), Ching
patent: 2264420 (1944-12-01), Voight
patent: 2271966 (1942-02-01), Baribault
patent: 2650123 (1953-08-01), Hopgood
patent: 2834194 (1958-05-01), Schlage et al.
patent: 3894417 (1975-07-01), Taniyama
patent: 3939315 (1976-02-01), Schlage
patent: 3967846 (1976-07-01), Schlage
patent: 4073527 (1978-02-01), Schlage
patent: 4390197 (1983-06-01), Butts
patent: 4676083 (1987-06-01), Sedley et al.

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