Linkage assembly for a window

Details Linkage assembly for a window Linkage assembly for a window

1976-12-13

1978-02-28

Kannan, Philip C.

Movable or removable closures

With operator for movably mounted closure

49356, E05F 1100

Patent

active

040757889

ABSTRACT:
An improved linkage assembly is provided for opening and closing a panel, such as a window or the like, and for locking said panel in an infinite number of positions between a fully opened and a fully closed position. The linkage assembly has a plurality of symetrically arranged and pivotally interconnected links with a lock for securing two overlapping links together to set the ends of the linkage assembly in a fixed position relative to each other.

REFERENCES:
patent: 1746556 (1930-02-01), Preston
patent: 1791808 (1931-02-01), Dreher
patent: 2043349 (1936-06-01), DeCary
patent: 2188231 (1940-01-01), Pond

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