Miscellaneous hardware (e.g. – bushing – carpet fastener – caster – Closure checks – Spring
Patent
1990-07-31
1991-07-02
Seidel, Richard K.
Miscellaneous hardware (e.g., bushing, carpet fastener, caster,
Closure checks
Spring
16 82, 16374, 292288, E05F 504
Patent
active
050274716
ABSTRACT:
A door prop device for the purpose of maintaining a hinged door in a propped-open position against the forces of spring tension, wind, gravity, or other causes, which will effectively function without damaging either the door or any adjacent structure and which will function on doors which pivot on vertical axes, horizontal axes, or any pivot axes orientations between vertical and horizontal. The device comprises a block-shaped prop member and a retainer member attached to the prop member. The retainer member is adapted to be placed over and engage with a hinge pin of an opened door hinge whereby the prop member is caused to assume an obstructing position in the space between the separated plates of the opened hinge. When it is desired to close the door, the door prop device is simply removed from the hinge and the door may then be closed.
REFERENCES:
patent: 83967 (1868-11-01), Horrell
patent: 377852 (1888-02-01), Giesy
patent: 1616265 (1927-02-01), Kroehling
patent: 1944101 (1934-01-01), Meier
patent: 2592230 (1952-04-01), Allen
patent: 3325854 (1967-06-01), Steigerwald
patent: 4648152 (1987-03-01), Grewall
patent: 4738002 (1988-04-01), Shank
patent: 4831688 (1989-05-01), Deininger
patent: 4858273 (1989-08-01), Civitelli
Brown Edward A.
Poff Clifford A.
Seidel Richard K.
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