Sash balance brake assembly

  • US 5,806,243 A
  • Filed: 05/21/1997
  • Issued: 09/15/1998
  • Est. Priority Date: 01/13/1995
  • Status: Expired due to Fees
First Claim
Patent Images

1. A sash balance brake assembly for a sash window system including a window frame having a pair of generally parallel tracks, each of said tracks having an outer wall, front and back intermediate walls and front and back inner walls collectively defining a channel, a sash window transversely disposed between said tracks and adapted for slidable movement along said tracks, and a sash balance assembly for providing a generally upward bias on said sash window, said sash balance brake assembly comprising:

  • a rotor rotatable about a rotor axis;

    a bolt having an engaging surface which is adapted to engage said outer wall and two bolt legs extending away from said engaging surface and substantially parallel to said rotor axis; and

    a slider body adapted for placement in a respective one of said channels and adapted for coupling to the sash balance assembly, said slider body having a generally circular aperture for receiving and rotatably supporting said rotor along said rotor axis, the slider body further having a pair of slots spaced from said aperture, each of said slots receiving and housing one of said bolt legs within said slider body, said rotor being adjacent said bolt, said rotor and said bolt including cooperative means for converting rotary motion of said rotor into movement of said bolt, such that said bolt engaging surface is adapted to selectively engage and disengage said track outer wall.

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