Door closer hold-open apparatus

Details Door closer hold-open apparatus Door closer hold-open apparatus

2005-06-14

2005-06-14

Walsh, John B. (Department: 3676)

Miscellaneous hardware (e.g., bushing, carpet fastener, caster,

Closure checks

Inertia

C016S082000, C292S297000

Reexamination Certificate

active

06904643

ABSTRACT:
The present invention relates to a hold-open apparatus for controlling the position of a door, preferably a screen door or storm door. The apparatus is used in conjunction with a piston assembly and can maintain a door in a predetermined open position, such as about 45° to about 100° in relation to a closed position. In a preferred embodiment, the apparatus can automatically lock and/or unlock when the door reaches predetermined positions. The apparatus advantageously can be retrofitted to existing door assemblies.

REFERENCES:
patent: 984101 (1911-02-01), Millspaugh
patent: 2821737 (1958-02-01), Simsich
patent: 2965918 (1960-12-01), Leanza
patent: 3708825 (1973-01-01), Wood
patent: 4079479 (1978-03-01), Clement
patent: 4181337 (1980-01-01), Muller
patent: 4194264 (1980-03-01), Stoffregen
patent: 4639969 (1987-02-01), Obenshain
patent: 4744548 (1988-05-01), Hathaway
patent: 4813100 (1989-03-01), King
patent: 4815163 (1989-03-01), Simmons
patent: 5575513 (1996-11-01), Tuttle
patent: 5592780 (1997-01-01), Checkovich
patent: 5659925 (1997-08-01), Patterson

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