Control mechanism for holding a door in the open position

Details Control mechanism for holding a door in the open position Control mechanism for holding a door in the open position

1981-08-17

1985-01-01

Grosz, Alexander

Closure fasteners

Extension link

Multiple

16332, 16334, 292266, 403 93, E05C 1732

Patent

active

044913559

ABSTRACT:
A control mechanism for a door including a first and a second longitudinal bar hinged together at their ends with the opposite ends of the bars being hinged, respectively, at a door and a frame. The hinge device joining together the ends of the bars includes a hinge pin with recesses on one of the bars and a spring loaded locking element on the other bar adapted to engage within the recesses for holding the door in the open position.

REFERENCES:
patent: 1478904 (1923-12-01), Sibley
patent: 1535672 (1925-04-01), Lockwood
patent: 1573512 (1926-02-01), Bush
patent: 1587678 (1926-06-01), Remington
patent: 1829551 (1931-10-01), Wambsgans
patent: 2171065 (1939-09-01), Johnson
patent: 2951723 (1960-09-01), Bernhard
patent: 3063086 (1962-11-01), Calhoun
patent: 4141272 (1979-02-01), Yanagisawa
patent: 4318559 (1982-03-01), Burton
patent: 4363561 (1982-12-01), Hsieh

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