Patent ID: 8595898
Filing Date: 2013-12-03
Classification: E05F,E05Y,Y10T

Abstract:
1. A self-closing sliding door header assembly secured to a door frame and operable to move a sliding door from an open position to a closed position, the header assembly comprising: a main spool disposed on a first shaft for winding a door cable thereon, the door cable extending between the sliding door and the main spool; a storage spool disposed on a second shaft; a biasing member storable on the storage spool and coupled to the main spool; a damper rotatably disposed on the first shaft to regulate movement of the main spool when the door is moving toward the closed position; and wherein in response to moving the door to the open position, the biasing member unwinds from the storage spool and wraps around the main spool thereby storing potential energy in the biasing member such that when the door is released, the stored energy exerts a closing force to move the door to the closed position.