Patent ID: 6202253
Filing Date: 2001-03-20
Classification: E05C,E05F,E05Y,Y10T

Abstract:
In a building structure door assembly having a door frame, a door pivotally mounted to said door frame for movement between a fully open position and a closed position, a cylindrical housing pivotally mounted to one of said door frame and said door, and a piston assembly partially extending from said cylindrical housing and pivotally mounted to the other of said door frame and said door, an arrangement for retaining said door in a partially open position, the arrangement comprising: an arm assembly adapted to be secured to the cylindrical housing and a catch piece adapted to be secured to the piston assembly, wherein said arm assembly comprises:a housing having an aperture formed therein secured to an inner surface of the cylindrical housing;a link member bisecting said housing and in communication with said aperture formed therein;a first arm secured to an end of said link member;a second arm secured to an opposite end of said link member; andbiasing means proximate said link member for preventing movement of said first arm and said second arm in a clockwise direction and a counterclockwise direction;said arm assembly and said catch piece are operably associated such that when the door is articulated toward the fully open position during a range of articulation, said catch piece and said arm assembly cooperate to oppose articulation of the door toward the closed position.