Miscellaneous hardware (e.g. – bushing – carpet fastener – caster – Thermally released check or closer
Patent
1974-08-23
1976-02-03
Frazier, Roy D.
Miscellaneous hardware (e.g., bushing, carpet fastener, caster,
Thermally released check or closer
16 49, 188 8284, 192 45, E05F 1520
Patent
active
039356140
ABSTRACT:
An electromechanical door holder-closer includes a conventional door closer which has a shaft rotatable in response to movement of a door between its open and closed positions and resilient means for yieldably resisting rotation of the shaft in one direction. A latching mechanism cooperates in a latching position with a uni-directional clutch mounted on the shaft to permit free movement of the door from its closed position toward its open position and to releasably retain the door in a selected hold-open position therebetween when the latching mechanism is held in cooperative engagement with the clutch. The latching mechanism is releasably retained in its latching position by a normally energized electrically operated holding mechanism. Means may be provided for adjusting the device from one hold-open position to another hold-open position of lesser opening by manually moving the door toward its closed position and to its new hold-open position while the latching mechanism is held in latched position by the holding mechanism. Means is also provided for overriding the latching and holding mechanism to release the door from its hold-open position in response to manual force applied thereto in the closing direction.
REFERENCES:
patent: 1184567 (1916-05-01), Poorman et al.
patent: 1214403 (1917-01-01), Wright
patent: 1243181 (1917-10-01), Keiper
patent: 1644249 (1927-10-01), Harrison
patent: 1739947 (1929-12-01), Chilton
patent: 2079528 (1937-05-01), Richardson
patent: 2306259 (1942-12-01), Khoenle
patent: 2598958 (1952-06-01), Wood
patent: 2639459 (1953-05-01), Werner
patent: 3729771 (1973-05-01), Crane
Pannone Robert John
Surko, Jr. Walter Edward
Aschenbrenner Peter A.
Emhart Corporation
Frazier Roy D.
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