Cord guide system for sash balance

Details Cord guide system for sash balance Cord guide system for sash balance

1987-08-14

1989-01-31

Falk, Joseph

Movable or removable closures

With means mounting closure for reciprocation

Diverse or springy material guide or slide

16198, 16214, 49431, E05D 1300

Patent

active

048006807

ABSTRACT:
A block and tackle balance system (10), contained within a spring cover (12) extending for the full length of a jamb liner (11), includes a guide (30) that directs a cord (25) through an angled course as it passes from the balance (20), through a hole (13) in the spring cover, to a support that moves up and down with a sash (15) outside the spring cover. The passing of the cord through the angled course in the guide produces load-related friction that helps prevent hop and drop of the sash. Guide (30) also preferably supports an end of the balance within the spring cover, and a support (50, 60) on the free end of cord (25) preferably engages sash (15) automatically as the sash assembled between a pair of jamb liners (11).

REFERENCES:
patent: 2774119 (1956-12-01), Osten
patent: 3078523 (1963-02-01), Martin
patent: 3146488 (1964-09-01), Dahlstrom
patent: 3290825 (1966-12-01), Adams
patent: 3358403 (1967-12-01), Dinsmore
patent: 4134234 (1979-01-01), Wood

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