Window balance brake shoe and pivot assembly
OwnerRobert G. Maierinventor
Life of this patent
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Abstract
A brake is disposed in a window frame. The brake includes a cam that causes the brake to engage the frame to resist movement of the brake. The cam is operated by a pivot assembly mounted in a sash of the window. A body of the pivot assembly slides into a notch in the sash and is retained by a detent. The pivot assembly includes an eccentric pivot bar that is received in an eccentric passage of the cam. The pivot bar engages a stop in the body and has a detent that engages a lip in the body.
Claims14
A pivot assembly for a window assembly having a window sash with a notch defining a pair of opposed tracks and having a brake assembly slidably disposed in a frame of the window assembly, the pivot assembly comprising:
- a rigid body having walls;
- a pivot bar projecting from the body and having an end adapted for being received in the brake assembly;
- and
- a flange extending from the body to distal edges of the flange and having walls spaced from walls of the body so as to define a pair of opposed channels, bases of the channels being defined where the flange is attached to the body, the assembly being slidable into the window sash and the channels being adapted for receiving the opposed tracks of the window sash therein, the channels being narrower at the distal edges than at the bases for accommodating deformations and thickness variations of edges of the tracks received in the windows.
A pivot and brake assembly for a window assembly comprising:
- a brake assembly having a housing for being slidably disposed in a frame of the window assembly;
- a brake movable to engage the frame so as to resist movement of the housing in the frame;
- a cam disposed in the housing and rotatable for moving the brake;
- and
- a pivot assembly having a rigid body having walls;
- a pivot bar projecting from the body and having an end received in the cam so that pivoting of the pivot bar rotates the cam;
- and a flange extending from the body to distal edges of the flange and having walls spaced from walls of the body for defining a pair of opposed channels, bases of the channels being defined where the flange is attached to the body, the assembly being slidable into a notched window sash of the window assembly and the channels being adapted for receiving opposed tracks of the window sash therein, the channels being narrower at the distal edges than at the bases for accommodating deformations and thickness variations of edges of the tracks received in the windows.
A window assembly comprising:
- a frame having two spaced, opposing, generally parallel slide channels;
- a sash having two spaced, generally parallel stiles and spaced, generally parallel header and footer rails assembled to form a generally rectangular shape, wherein each of said stiles is adapted for sliding along a corresponding one of the slide channels, and said footer rail having a hollow construction and a notch at each end thereof, each notch defining a pair of opposed, generally parallel tracks;
- a pair of brake assemblies each comprising a housing slidably disposed in the respective slide channel;
- a brake movable to engage the slide channel so as to resist movement of the housing in the slide channel;
- a cam disposed in the housing and rotatable for moving the brake;
- a pair of pivot assemblies each having a rigid body having walls;
- a pivot bar projecting from the body and having an end received in the respective cam so that pivoting of the pivot bar rotates the cam;
- and a flange extending from the body to distal edges of the flange and having walls spaced from walls of the body for defining a pair of opposed channels, bases of the channels being defined where the flange is attached to the body, the assembly being slidable into the notch of the sash and the channels receiving opposed tracks of the respective window sash notch therein the channels being narrower at the distal edges than at the bases for accommodating deformations and thickness variations of edges of the tracks received in the windows;
- and
- a counterbalance disposed in each of the slide channels and attached to the corresponding brake assembly.
Dependencies are inferred from the claim text.