Chain operator for windows

Details Chain operator for windows Chain operator for windows

1993-05-12

1995-04-18

Milano, Michael J.

Movable or removable closures

With operator for movably mounted closure

Reversibly flexible and rigid rod

E05F 1100

Patent

active

054067502

ABSTRACT:
An operator for a window has a chain as an operating member, a sprocket wheel for advancing and retracting the chain, and a counterbalancing spring operatively connected to a shaft of the sprocket wheel.

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patent: 5097629 (1992-03-01), Guhl et al.
patent: 5179803 (1993-01-01), Lense

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