Window panel balance apparatus and method

US6840011B2 · kind B2 · utility

Assignee

• Andersen Corporation · US

Inventors

• Roy A. Thompson · Milton, US
• Douglas W. Kroncke · Boston, US
• John C. Costello · Wellesley, US
• David Chastain · Boston, US
• Jack D. Gundlach · Acton, US
• Timothy J. Kelley · Pittsford, US
• Larry Versteeg · Sioux Falls, US
• Thomas Hänsel · Rockford, US
• Arthur R. King, IV · River Falls, US
• James R. Harger · Rockford, US
• Michael L. Doll · Osceola, US
• James L. Peterson · Austin, US
• Dennis A. Galowitz · Stillwater, US
• Richard Fischer · Hudson, US

Key dates

• Filing date: Dec 13, 2000
• Grant date: Jan 11, 2005
• Expiry date: Dec 13, 2020

Classification

• Technology area (CPC E): Fixed Constructions
• CPC primary: E05Y2900/148
• WIPO field: Civil engineering
• WIPO sector: Other fields

Abstract

A window having a window panel that slides in a frame and at least one balancer that is secured to the window panel is disclosed. The window is of the tiltable hung type having a vertical operating position in which the balancer slides with the window panel in the frame and a tilted position in which the balancer remains secured to the window panel. The balancer includes an extensible member having a first end operatively coupled to the balancer and a second end operatively coupled to a frame so that the balancer can exert a force on the window panel to assist against the force of gravity when the window panel is in the vertical operating position. A method of constructing a tiltable hung window with a balancer secured to the window panel is also disclosed.