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Class Information
Number: 16/196
Name: Miscellaneous hardware > Sash balances > Sash and cord
Description: Devices having connected cords or chains combined with pulleys for holding the sashes in balanced or adjusted position.










Patents under this class:

Patent Number Title Of Patent Date Issued
7093349 System for manufacturing sash window assemblies Aug. 22, 2006
6934998 Sash balance shoe jamb attachment Aug. 30, 2005
6751904 Balance system for sash window assembly Jun. 22, 2004
6684454 Support mechanism for tilted window sash Feb. 3, 2004
6523307 Balance system for sash window assembly Feb. 25, 2003
6378170 Security seal for collars used to tension spring in garage door assemblies Apr. 30, 2002
6041476 Inverted block and tackle window balance Mar. 28, 2000
4914780 Compound counterbalance and winding systems with zero torque spirals Apr. 10, 1990
4882806 Counterbalancing torsion spring mechanism for devices which move up and down and method of setting the torsion springs thereof Nov. 28, 1989
4760622 Compound winding apparatus and counterbalance systems Aug. 2, 1988











 
 
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