Spring loaded block and tackle window sash balance assembly

Details Spring loaded block and tackle window sash balance assembly Spring loaded block and tackle window sash balance assembly

1988-10-19

1990-08-21

Seidel, Richard K.

Miscellaneous hardware (e.g., bushing, carpet fastener, caster,

Sash balances

Spring

16DIG16, 16DIG31, 16197, 16DIG20, 16213, 49446, 49429, 49414, E05F 116

Patent

active

049494252

ABSTRACT:
A pre-assembled, spring loaded, block and tackle window sash balance assembly is adapted for providing vertical support for a window sash running in an elongated, generally upright sash run having a generally C-shaped guide channel extending along its plow region. The assembly comprises a generally U-shaped housing for a block and tackle spring balance device. The assembly further includes spaced slide means which are discrete from the housing itself and which are slidably interengageable with the guide channel for removeably attaching the assembly to the sash run. Accordingly, the block and tackle balance assembly may be pre-assembled and then conveniently and efficiently attached to the sash run and supported in a position to provide spring balanced support for a window sash mounted in the sash run.

REFERENCES:
patent: 2262990 (1941-11-01), Cross
patent: 3054152 (1962-09-01), Trammell
patent: 3086259 (1963-06-01), Klein
patent: 3091797 (1963-06-01), Prosser
patent: 3114178 (1963-12-01), Wood
patent: 4078336 (1978-03-01), Prosser
patent: 4089085 (1978-05-01), Fitzgibbon
patent: 4190930 (1980-03-01), Prosser

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