System and Method for Inhibiting Window Sash Drift

摘要

A system and method for inhibiting inadvertent movement of a window sash out of a fully open position. Brake shoes travel in the guide tracks as the window sash is moved between a fully open position and a fully closed position. A stop is mounted within the guide tracks. The brake shoe and the stop contact and interconnect when the window sash is moved to its fully open position. The brake shoe is separable from the stop when a closing force is manually applied to the window sash that acts to move the window sash away from its fully open position. The force applied must exceed a threshold level. In this manner, the window sash will remain in its fully open position and will not inadvertently drift closed due to gravity, vibrations or contact with another window sash.

主权项

1. In a window having a window sash that travels in guide tracks as said window sash moves between a fully open position and a fully closed position, a system for inhibiting drift movement of said window sash out of said fully open position, said system comprising:
a brake shoe coupled to said window sash that moves in one of said guide tracks; a stop mounted to said one of said guide tracks at a fixed elevation, wherein said brake shoe and said stop contact and form an interconnection when said brake shoe is in said fully open position, wherein said interconnection opposes a force applied to said window sash to move said sash from said fully open position towards said fully closed position.