Window sash actuating mechanism

Details Window sash actuating mechanism Window sash actuating mechanism

1993-11-12

1996-04-02

Dorner, Kenneth J.

Movable or removable closures

With operator for movably mounted closure

Operator drives closure along guide

49139, 49449, E05F 1100

Patent

active

055029256

ABSTRACT:
A mechanism for opening and closing the sash of a window which includes first and second sash brackets, a drive mechanism, first and second flexible timing belts, structure for connecting the timing belts to the sash brackets and mechanisms for connecting the two timing belts. The structure for connecting the timing belts is adjustable in length to facilitate the tensioning of the belts. Tensioning springs are also included.

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