Electric door opener with multiple position armature permitting

Details Electric door opener with multiple position armature permitting Electric door opener with multiple position armature permitting

1997-02-28

1998-08-04

Saether, Flemming

Closure fasteners

Keepers

With movable dog, catch or striker

E05B 1502

Patent

active

057882959

ABSTRACT:
An electric door opener with a trimmer actuatable by an armature and a mat coil. The trimmer is adjustably positioned for the release or locking of a door opener latch. The door opener is useable as an electric no-load current door opener and as an operating current door opener because a selector device is provided to switch the armature-trimmer system between no-load current movement positions and operating current movement position.

REFERENCES:
patent: 3910617 (1975-10-01), Scalza
patent: 4015869 (1977-04-01), Horvath
patent: 4756566 (1988-07-01), Logas
patent: 4838591 (1989-06-01), Fuss
patent: 5439262 (1995-08-01), Fuss et al.
patent: 5490699 (1996-02-01), Uyeda

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