System and method for improving the wear life of a brake...

Details System and method for improving the wear life of a brake... System and method for improving the wear life of a brake...

E - Fixed Constructions

05

F

E05F 3/16 (2006.01) E05D 13/00 (2006.01)

Patent

CA 2707563

A counterbalance system for a tilt-in window and its method of operation. Posts are provided on the sides of a tilt-in window sash that rotate when the sash is tilted. A brake structure is attached to each post. Each brake structure has a first contoured surface that rotates with the post when said sash is tilted. A second contoured surface is provided within the window track. The second contoured surface moves up and down in the track with the post but does not rotate with the post when the sash is tilted. When the window sash is tilted for cleaning, the first contoured surface moves against the second contoured surface within the window track. A cam action occurs that moves the first contoured surface away from the second contoured surface. This causes the brake structure to be biased against the track and lock in a fixed position within the track.

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