Window

Details Window Window

1992-08-05

1995-01-24

Kannan, Philip C.

Movable or removable closures

Mounted for optional movements

Pivot mounted on sliding member; e.g., slide-stile

49175, 49445, E05D 1522

Patent

active

053833031

ABSTRACT:
A window constructed such that a window sash is slidable upwardly and downwardly along a side jamb of a window, and may be inclined relative to the side jamb. The window sash is hung by a counterbalance and held at a selected desired position. The counterbalance is provided with a coiled torsion spring which counter balances the window sash, and the torsion force of the torsion spring can be adjusted. Adjusting mechanism is provided with a rotatable adjusting shaft for adjusting the torsion force of the torsion spring, a braking member for applying braking force to the adjusting shaft to prevent the rotation of the adjusting shaft, and a cam face for urging the braking member against the adjusting shaft to brake it or release it.

REFERENCES:
patent: 1762993 (1929-04-01), Klemm
patent: 2792588 (1957-05-01), Gency
patent: 2890480 (1959-06-01), Gregg et al.
patent: 3055062 (1962-09-01), Peters et al.
patent: 3434236 (1969-03-01), Weidner et al.
patent: 3452478 (1969-07-01), Foster
patent: 3844066 (1974-10-01), Nobes
patent: 4854077 (1989-08-01), Rogers et al.
patent: 5035081 (1991-07-01), Yamamoto et al.

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