Window spring anchor

Details Window spring anchor Window spring anchor

1988-04-08

1989-03-14

Seidel, Richard K.

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

Sash balances

Spring

16DIG16, 49445, E05F 100

Patent

active

048114553

ABSTRACT:
A system of anchoring a window balance spring (16) in a channel (20) includes an arched anchor plate (10) connectable to spring (16) and having edge projections (15) that fit between the side walls (21) of the channel. When these and the bottom (22) of the channel are supported by a tool (30), anchor plate (10) is stamped flat against the channel bottom to spread edge projections (15) apart and drive them into the channel side walls (21) for a deformation interlock that holds the anchor and the spring reliably in place within the channel.

REFERENCES:
patent: 1695454 (1928-12-01), Coyne
patent: 2329463 (1943-09-01), Froelich
patent: 2657420 (1953-11-01), Carbary
patent: 2702082 (1955-02-01), Wolf
patent: 3051976 (1962-09-01), Dubois et al.
patent: 3064306 (1962-11-01), Beasley et al.
patent: 3116520 (1964-01-01), MacGregor
patent: 3296366 (1967-01-01), Bronikowski
patent: 3710642 (1973-01-01), Schneider
patent: 4571887 (1986-02-01), Haltof
patent: 4672713 (1987-06-01), Newton et al.
patent: 4685175 (1987-08-01), Yonovich

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