Block and tackle window sash balance and installation method

Details Block and tackle window sash balance and installation method Block and tackle window sash balance and installation method

1980-06-09

1982-06-01

Troutman, Doris L.

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

Sash balances

Spring

E05D 1312

Patent

active

043320546

ABSTRACT:
An improved block and tackle type sash balance that can be installed in single and double-hung windows by a single workman without the necessity of removing the window sashes from the window frame and reassembling the window unit.

REFERENCES:
patent: 3869754 (1975-03-01), Foster
patent: 4089085 (1978-05-01), Fitzgibbon

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