Invention Grant
US08371068B1 System and method for improving the wear life of a brake shoe in the counterbalance system of a tilt-in window 有权
用于提高倾斜窗的平衡系统中的制动瓦的磨损寿命的系统和方法

  • Patent Title: System and method for improving the wear life of a brake shoe in the counterbalance system of a tilt-in window
  • Patent Title (中): 用于提高倾斜窗的平衡系统中的制动瓦的磨损寿命的系统和方法
  • Application No.: US12717934
    Application Date: 2010-03-04
  • Publication No.: US08371068B1
    Publication Date: 2013-02-12
  • Inventor: John R. Kunz
  • Applicant: John R. Kunz
  • Agency: LaMorte & Associates, P.C.
  • Main IPC: E05D15/22
  • IPC: E05D15/22 E05D15/24
System and method for improving the wear life of a brake shoe in the counterbalance system of a tilt-in window
Abstract:
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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