Spring balance

Details Spring balance Spring balance

2006-03-24

2009-08-18

Miller, William L. (Department: 3677)

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

Sash balances

Spring

C016S193000

Reexamination Certificate

active

07574772

ABSTRACT:
This invention relates to a spring balance, and in particular to a spring balance for use with a sliding sash window. The invention provides a spring balance comprising a top assembly which is securable to a frame member, a bottom assembly which is securable to a sliding sash, a tension spring connected to the top assembly and to the bottom assembly, a torsion spring, a spiral rod, and a follower bush interconnecting the spiral rod and the torsion spring. The spring balance is adjustable at the top assembly, and includes a limit mechanism for limiting the range of adjustment, the limit mechanism preventing over-adjustment of the spring balance.

REFERENCES:
patent: 1226145 (1917-05-01), Taylor
patent: 1925059 (1933-08-01), Sheard et al.
patent: 2067164 (1937-01-01), Smith
patent: 2116329 (1938-05-01), Sturman
patent: 2598560 (1952-05-01), Kenyon
patent: 2825089 (1958-03-01), Algot et al.
patent: 3118190 (1964-01-01), Love
patent: 3348335 (1967-10-01), Mauro
patent: 3789549 (1974-02-01), Yip
patent: 5152032 (1992-10-01), Davis et al.
patent: 2002/0124349 (2002-09-01), Malek et al.
patent: 819094 (1959-08-01), None
patent: 2 262 123 (1993-06-01), None
patent: 2 373 813 (2002-10-01), None
patent: 2 398 097 (2004-08-01), None
patent: 2001055861 (2001-02-01), None
patent: WO 82/01209 (1982-04-01), None

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