Chain operator for a window

Details Chain operator for a window Chain operator for a window

1983-08-08

1985-06-11

Downey, Kenneth

Movable or removable closures

With operator for movably mounted closure

Reversibly flexible and rigid rod

74606R, 74 892, E05F 1100

Patent

active

045219931

ABSTRACT:
A chain operator for a window, and particularly a skylight window, having a casing with a chain storage area from which a chain can be advanced for opening of the window. The casing is constructed for mounting of different types of drive mechanism for a chain drive sprocket within the casing. A unitary liner is fitted within the casing to provide a reduced friction mounting for the drive sprocket and a reduced friction guide for the chain, with the liner being positioned in high load and high wear areas to result in smooth and quiet long-life operation. The chain operator has a chain composed of solid links pivotally interconnected by U-shaped links and interrelated in a manner to readily move between straight and curved configurations and operate under relatively heavy load.

REFERENCES:
patent: 1260550 (1918-03-01), Kopp
patent: 1333595 (1920-03-01), Anderson
patent: 1584198 (1926-05-01), Stevens
patent: 1870244 (1932-08-01), Elston
patent: 2017543 (1935-10-01), Madsen
patent: 2045261 (1936-06-01), Clute
patent: 2131261 (1938-09-01), Aldeen et al.
patent: 2140842 (1938-12-01), Madsen
patent: 2454794 (1948-11-01), Hakanson
patent: 2832590 (1958-04-01), Youngberg
patent: 3090613 (1963-05-01), Bechtold
patent: 3234698 (1966-02-01), Kimblern
patent: 3610055 (1971-10-01), Parris
patent: 3911802 (1975-10-01), Morden
patent: 4014136 (1977-03-01), Hemens et al.
patent: 4382349 (1983-05-01), Dunphy et al.

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