Patent ID: 8505240

Claim:
A device to limit an opening of a window having a sash hingedly coupled to a window frame; comprising: a sash bracket adapted to attach to the sash; a limiting arm operably coupled to the sash bracket, the limiting arm presenting a first end and a second end, the first end of the limiting arm pivotally coupled to the sash bracket, the limiting arm further including a track engagement structure proximate the second end; and a track assembly adapted to attach to the window frame, the track assembly including a track and a release assembly, the track presenting a first end and an opposing second end and having a first opening which allows the track engagement structure proximate the first end of the track to enter the track and a second opening which allows the track engagement structure proximate the second end of the track to exit from the track, the track engagement structure of the limiting arm being slidable in the track, the release assembly disposed proximate the second end of the track and selectively operable to release the track engagement structure from engagement with the track, and wherein a biasing structure is operably coupled to the sash bracket and the limiting arm, the biasing structure biasing the limiting arm toward an engagement position in which the second end of the limiting arm is spaced apart from the sash.