Electric door opener

Details Electric door opener Electric door opener

1988-05-20

1989-06-13

Moore, Richard E.

Closure fasteners

Keepers

With movable dog, catch or striker

E05C 2102

Patent

active

048385913

ABSTRACT:
An electric door opener is described, which is housed in a narrow, longitudinally symmetrical T-shaped casing. Behind a swing catch is arranged a changer constructed as a swing arm, which is approximately parallel to the swing catch axis and whose free end engages with the swing catch. A bolt operable by an electromagnet acts on the free end. The electromagnet coil is positioned parallel to the changer behind the swing catch.

REFERENCES:
patent: 352154 (1886-11-01), Rousseau
patent: 886827 (1908-05-01), Loch
patent: 1471455 (1923-10-01), Ernst
patent: 1618738 (1927-02-01), Weiss
patent: 3543547 (1970-12-01), Sugiyama
patent: 3804442 (1974-04-01), Powers
patent: 3819215 (1974-06-01), Fuss
patent: 3910617 (1975-10-01), Scalza et al.
patent: 4015869 (1977-04-01), Horvath
patent: 4211443 (1980-07-01), Butts et al.
patent: 4471983 (1984-09-01), Bischoff et al.
"Electrical Locking Devices" by Rofu Int'l Corp, May 1983; p. 3.

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