Miscellaneous hardware (e.g. – bushing – carpet fastener – caster – Checks and closers – Liquid
Patent
1976-08-26
1978-07-25
Feldbaum, Ronald
Miscellaneous hardware (e.g., bushing, carpet fastener, caster,
Checks and closers
Liquid
16 66, E05F 304
Patent
active
041020065
ABSTRACT:
A door closer with integral check action comprising a rigid rod movable inwardly and outwardly of a tubular housing which is adapted to be mounted on a door. The rigid rod is pivotally connected to a rigid link plate itself pivotally connected to a fixing plate for mounting on the door frame. A spring within the housing urges the rod inwardly to close the door. On one side of a transverse wall, through which the rod extends, is a fluid filled chamber in which moves a piston, carried by the rigid rod. Valve means on the piston act to resist only inward movement of the piston as the door is closed by the force of said spring and the rate of closure of the door is thereby controlled without substantially restricting outward movement of the piston in response to opening of the door.
REFERENCES:
patent: 2702398 (1955-02-01), Marcus
patent: 3071800 (1963-01-01), Patriquin
patent: 3072954 (1963-01-01), Patriquin
patent: 3090988 (1963-05-01), Truhon
patent: 3249961 (1966-03-01), Quinn
patent: 3289242 (1966-12-01), Mallory
patent: 3593367 (1971-07-01), Waldo
Feldbaum Ronald
Perkins & Powell Limited
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