Patent ID: 6065184
Filing Date: 2000-05-23
Classification: E05F,E05Y,Y10T

Abstract:
An apparatus for automatically closing a sliding door comprising a weight (1) for operative connection (8) to a sliding panel (13) forming part of a sliding door assembly such that sliding the panel into the open door lifts the weight (1) which then falls again once the sliding panel is released, thus closing the door, said apparatus comprises:a fixed vertically extending pneumatic tube (5) wherein the weight in the form of a piston (1) is guided, and a pulley (9) for guiding a cable (8) adapted to be fixed to the sliding panel (13), wherein the movement of the piston within the pneumatic tube is dampened by means of check valve (22) and throttle (26) allowing admission and restricted outflow of air respectively, characterized by, the pneumatic tube Joined to a horizon-ally extending second tube by an elbow (10), wherein the elbow houses the cable and the pulley (9), and the horizontally extending second tube houses the cable (8) and supports at the distal end thereof a second pulley (11), such that the end of the cable when fixed to the moving panel closes the moving panel by weight of the piston (1) in a direction away from the pneumatic tube (5).