Block and tackle window balance with bottom guide roller

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.

Bibliographische Detailangaben

1. Verfasser:	NEWMAN GARY ROGER
Format:	Patent
Sprache:	eng
Schlagworte:	CHECKS FOR WINGS DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION FIXED CONSTRUCTIONS HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS KEYS LOCKS SAFES WINDOW OR DOOR FITTINGS WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THEFUNCTIONING OF THE WING
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