Device for motorizing an overhead swinging door for a garage or the like, and motorized overhead swinging door provided with this device
AssigneeAprimatic S.p.A.
InventorAlessandro Turini
Life of this patent
Estimating the term…
Abstract
An overhead swinging door is swingably mounted on two side supports slidable in two vertical guides and each connected to a counterweight by a cable re-directed over an upper pulley. On at least one of the door sides, the counterweight is also connected to the respective side support by a chain which forms an endless ring with the cable and is re-directed over a lower wheel driven by a motor and reducing gear unit which is preferably located within the side upright of the door frame.
Claims9
Motorized overhead swinging door for a garage or the like, of the type comprising:
- a fixed support frame, including two vertical side guides,
- two side supports movable within said side guides,
- a door structure swingably mounted around a horizontal axis on said supports and also connected to said fixed frame by two pivoted side arms,
- a pair of counterweights slidably guided along the vertical direction within said fixed frame and each connected to a respective one of said side supporters by cable means directed over a respective upper pulley having a fixed axis, and
- a motor unit for driving the door,
- wherein at least one of said counterweights is connected to the respective side support both, on the upper side, by said cable means and, at the lower side, by chain means which forms an endless ring with said cable means, said chain means being directed around a respective lower wheel and said motor unit being arranged to drive said lower wheel.
Device for motorizing an overhead swinging door, said door being of the type comprising:
- a fixed support frame, including two vertical side guides,
- two side supports movable within said side guides, a door structure, swingably mounted around a horizontal axis on said side supports and also connected to the fixed frame by two pivoted side arms,
- a pair of counterweights slidably guided along the vertical direction within said fixed frame and each connected to a respective one of said supports by cable means redirected over a respective upper pulley having a fixed axis,
- wherein said device includes, at least for one of said counterweights:
- chain means which connect said counterweight, at the lower side, to the respective side support, so as to form an endless ring with said cable means,
- a lower wheel engaging said chain means and re-directing said chain means, and a motor unit connected to said lower wheel for driving said lower wheel.
Dependencies are inferred from the claim text.