Patent ID: 9435149
Filing Date: 2016-09-06
CPC Classification: E05B,E05C,Y10T

Claim Text:
1. A motion-limiting device for installation in a window assembly, which comprises, a housing formed of a resilient plastic material and comprising spaced apart side walls, defining an internal cavity and said cavity having an opening at the top of said housing, said housing being configured for reception in a recess or opening in a window sash rail, a tumbler pivotally mounted within said housing cavity for limited pivotal movement about a pivot axis and having first and second pivot limit positions, said tumbler in said first limit position being recessed within said cavity and in said second limit position having a portion extending outward from said cavity, at least one of said housing side walls having a detent recess therein spaced in a radial direction from said pivot axis, a detent element fixed to and projecting laterally from said tumbler and having a portion received within said detent recess, said detent element being movable through an arcuate path upon pivoting movement of said tumbler, said detent recess defining first and second end portions accommodating a range of movement of said detent element and said tumbler with respect to said housing, said first and second end portions corresponding to said first and second limit positions of said tumbler, said at least one housing side wall having a resiliently displaceable region defining a restricted portion of said detent recess between said first and second end portions, said restricted portion being positioned to engage and restrict movement of said detent element and requiring the application of external force on said tumbler to enable said detent element to pass through said restricted portion, enabling said tumbler to pivot in either direction between its first and second limit positions.