Door keeper

Details Door keeper Door keeper

1978-03-27

1979-05-22

Schroeder, Werner H.

Closure fasteners

Magnetic

16 82, 49394, 292 75, E05C 1916

Patent

active

041555767

ABSTRACT:
A door keeper for double swing doors that retains the doors against partially opening due to wind forces. The keeper includes a permanent magnet that is mountable to a door frame. The magnet includes a flat surface that may be positioned flush with the adjacent surface of the door frame. A roller formed of magnetic material is mounted on brackets to the door in close proximity to the magnet when the door is in a closed position. Brackets mount the roller for free rotational movement about its axis and limited transverse movement toward and away from the permanent magnet surface. Therefore, when the door is in a closed position, the roller is engaged with the magnet by magnetic attraction, which retains the door in a closed condition against reasonable wind force. However, the roller is capable of rolling over the magnet surfaces when the door is subsequently moved by someone wishing to leave or enter the associated building.

REFERENCES:
patent: 2970857 (1961-02-01), Squire
patent: 3400964 (1968-09-01), Baermann
patent: 3934909 (1976-01-01), Van Natter
patent: 4047331 (1977-09-01), Davlantes

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