Compact window operator

Details Compact window operator Compact window operator

1993-06-14

1995-07-25

Redman, Jerry

Movable or removable closures

With means mounting closure for swinging

With biasing means

49324, E05F 110

Patent

active

054351030

ABSTRACT:
A compact counterbalanced window operator includes a housing in which operating arms pivotally connected in the housing and slidingly and pivotally connected to a sash of the window are counterbalanced by a torsion spring. In one embodiment, connections between the torsion spring and the operating arms are adjustable in order to vary the counterbalancing force applied to the operating arms.

REFERENCES:
patent: 2698173 (1954-12-01), Rydell
patent: 2767979 (1956-10-01), Hummert
patent: 4521993 (1985-06-01), Tacheny et al.
patent: 4553656 (1985-11-01), Lense
patent: 5097629 (1992-03-01), Guhl et al.
patent: 5179803 (1993-01-01), Lense
patent: 5205074 (1993-04-01), Guhl et al.
English translation of German Patent 186,670.
English translation of German Patent 824,752.
English translation of German Utility Model No. 90 03 179.2.
English translation of Swiss Patent 324,587.

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