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.

 
Web www.patentalert.com

< Spring mounting for sash window tensioning arrangements

< Methods and apparatus for a single lever tilt lock latch window

> Snap lock balance shoe and system for a pivotable window

> Article support system for poles
~ 00618