Door magnet improvement

Details Door magnet improvement Door magnet improvement

1989-02-02

1989-08-01

Moore, Richard E.

Closure fasteners

Magnetic

292DIG15, 292DIG60, 292DIG53, E05C 1916

Patent

active

048529192

ABSTRACT:
A swivel mounted armature plate for use with an electromagnetic door holder features a spherical socket connection to an adjusting screw which may be secured in any combination of depth and rotation within its operating range.

REFERENCES:
patent: 1479398 (1924-01-01), Ollard
patent: 2496691 (1950-02-01), Berry
patent: 2673377 (1954-03-01), Gaugler
patent: 2801870 (1957-08-01), Davey
patent: 3781047 (1973-12-01), Surko, Jr.
patent: 4669766 (1987-06-01), Hanchett, Jr. et al.

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