Patent ID: 6719033
Filing Date: 2004-04-13
Classification: E05D,E05F,E05Y

Abstract:
A power operated door opening mechanism for moving multi-panel garage doors that are installed in door openings between an open and a closed position, including a jack shaft operator adapted to be secured to the door opening, a torsion bar adapted to be mounted horizontally above the door opening and rotationally driven by the jack shaft operator and a pair of drums mounted on the torsion bar, the doors having an inner surface, a side surface and panels, including a lowermost panel, said mechanism comprising:a plurality of bearings, a pair of said bearings adapted to be secured to each door panel, including a pair of lowermost bearings adapted to be secured to the lowest door panel; a plurality of guide members, said guide members adapted to extend laterally from the side of the door, said guide members rotationally engaging said bearings, including lowermost guide members rotationally engaged said lowermost bearing; tracks for supporting and guiding said guide members; a pair of pulleys adapted to be secured adjacent to the bottom of the garage door and substantially vertically beneath said lowermost bearing; a pair of lift cables having two ends, one end of said lift cables being connectedly attached to said lowermost bearing, the other end being connectedly attached to the drums, said lift cables being wound and unwound from the drums as the jackshaft operator drivingly turns the torsion bar; and at least one reverse cable, one end of said reverse cable being connectedly attached to said lowermost bearing, the other end being connectedly attached to the drum, said reverse cable further engaging said pulleys, said reverse cable being wound and unwound from the drums as the jackshaft operator drivingly turns the torsion bar.