Winding device and methods
OwnerZhide David FENGinventor
Life of this patent
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Abstract
A winding device for adjusting the elastic energy of an overhead door spring system installed on a wall structure, the door having at least a door panel which can be moved up and down constrained within a track. The door also has a counterbalancing system with a coil spring having a stationary end and a winding end. The door system also has a central shaft held within the counterbalancing system. The winding device has a worm gear with a flange, or collar portion, a worm screw engaged by the worm gear, a box or container or a retainer to hold the worm gear and worm screw together in an engagement status. The worm gear is engaged with the central shaft by at least one fastener. It can also be used to lift said door directly when said spring is broken, or there is no spring at all.
Claims20
A winding device for adjusting the elastic energy of a counterbalance system of an overhead door system installed on a wall structure having a door panel which is movably held within a guidance track, wherein said counterbalance system has a coil spring with a stationary end and a winding end, wherein said stationary end is directly or indirectly fixed to said wall structure, and where said counterbalance system also having a central shaft held within said coil spring, said counterbalance system also having a cable with an upper end and a lower end wherein said upper end is connected with said winding end directly, or through said central shaft, and wherein said lower end is connected with said door panel, comprising:
- a worm gear,
- said worm gear having a flange portion,
- said flange portion having a center through hole along flange portion center line;
- a worm screw engaged by said worm gear;
- and
- a retaining member adapted to hold said worm gear and worm screw together in engagement status;
- wherein said center through hole of said worm gear being engaged with said central shaft, and being fixed fully together by a fastener group which has at least one fastener;
- and wherein said winding device being detachable from said shaft after engaging with said counterbalance system.
A winding device for operation of an overhead door system having a connecting means comprising:
- a worm gear;
- said worm gear having at least a first flange portion:
- said first flange portion having a center through hole along a flange portion center line;
- a worm screw;
- a retainer means to keep said worm gear and worm screw together in an engagement status;
- and
- a group of first fasteners having at least one fastener attached to said first flange portion for fixing said first flange portion to said connecting means,
A winding device for use with a general shaft to move an object from a first location ewe to a second location comprising:
- a worm gear;
- said worm gear having a center through hole along a center line;
- a worm screw;
- a retainer portion to keep said worm gear and worm screw together in an engagement status;
- and
- a group of first fasteners having at e s one fastener attached to said worm gear for fixing it to said shaft.
A winding device for lifting an overhead door system installed with a wall structure, said door system having at least a door panel which can be moved up and down within a track, said door system also having a central shaft being fixed on said wall structure and above said door panel, said door system also having a cable whose upper end is connected with said central shaft, and whose lower end is connected with said door panel, said winding device comprising:
- a worm gear;
- said worm gear having a flange portion,
- said flange portion having a center through hole along a flange portion center line;
- a worm screw engaged with said worm gear;
- and
- a box-like container adapted to hold said worm gear and worm screw together in an engagement status;
- wherein said center through hole of said worm gear being engaged with said central shaft, and being fixed with said central shaft;
- and wherein when said winding device is turned with said shaft to lift said door panel;
- and then detached from said shaft after being used to lift said door panel.
Dependencies are inferred from the claim text.