Opener

Details Opener Opener

1988-02-09

1990-01-30

Smith, Gary L.

Closure fasteners

Keepers

With movable dog, catch or striker

292201, E05B 1502

Patent

active

048969095

ABSTRACT:
A door opener includes a pivotably mounted locking plate, and an electromagnet, a tangentially effective wedge element is mounted to the locking plate, an axially adjustable and movable drive slide of the shaped cross section is operatively connected to the wedge; a control slide is resiliently mounted in the drive slide; a blocking pin is mounted on the control slide; and an armature is pivotably mounted on the control slide to hold or release ultimately the locking plate.

REFERENCES:
patent: Re30263 (1980-04-01), Horvath
patent: 1638240 (1927-08-01), Caron
patent: 2325225 (1943-07-01), Burke
patent: 3640560 (1972-02-01), Zawadzki et al.
patent: 3910617 (1975-10-01), Scalza et al.
patent: 4211443 (1980-07-01), Butts et al.
patent: 4471983 (1984-09-01), Bischoff et al.
patent: 4573333 (1986-03-01), Choi
patent: 4616865 (1986-10-01), Mackle
patent: 4626010 (1986-12-01), Hanchett, Jr. et al.

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