Block and tackle window balance with bottom guide roller

E - Fixed Constructions – 05 – F

Patent

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Details

E05F 1/16 (2006.01) E05D 13/00 (2006.01) E05D 15/16 (2006.01) E05F 1/00 (2006.01)

Patent

CA 2376418

Disclosed are apparatus for a block and tackle window balance to be incorporated in single and double hung window assemblies. In one embodiment the block and tackle window balance includes a roller secured within a bottom guide to increase range of travel of a window sash.

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