Patent ID: 6374543
Filing Date: 2002-04-23
Classification: E05F,E05Y

Abstract:
A door operating apparatus for a reversibly operable door in a building, which comprises:(a) a frame with opposed ends to be mounted and extend away from the door inside the building wherein the frame has an upper leg and a lower leg below the upper leg with a transfer mechanism mounted between both legs; (b) a carriage assembly mounted on the lower leg of the frame at one of the ends so as to be adjacent to and connected to the door and linearly moveable on the frame for driving the door between the open and closed positions; (c) a first flexible driving means connected to the carriage assembly and which extends adjacent the lower leg of the frame away from the one of the ends of the frame and which when activated moves the carriage to open and close the door; (d) a rotatable driven member, wherein the transfer members includes the rotatable driven member, which driven member mounts and drives the first flexible driving means; (e) a rotatable shaft having opposed ends mounting the driven member for rotation at one of the ends of the shaft, the shaft being mounted in at least one bearing as part of the transfer mechanism; (f) a rotatable drive member mounted at the other of the ends of the shaft as part of the transfer mechanism; (g) a second flexible driving means mounted on the rotatable drive member which when activated rotates the shaft and drives the driven member; and (h) an electric drive motor member mounted on the upper leg adjacent to the other of the ends of the frame with a rotating means which is directly connected to the second flexible driving means, wherein when the drive motor is activated the rotating means moves the second flexible driving means, rotates the drive member, shaft and driven member to move the first flexible driving means and the carriage assembly to open and close the door.