Patent ID: 8122933

Claim:
A sectional door comprising a) a door frame; b) a door panel comprising a plurality of sections coupled to one another in an articulated manner; c) a weight equalization device coupled to said door panel; d) an electrical door drive coupled to said door panel for opening and closing movements of the door panel; e) a plurality of running rails; and f) a plurality of guide rails coupled to said frame; wherein said plurality of sections include an uppermost section, which in a closed position of said door panel, is guided on said plurality of running rails as a header section, wherein said plurality of running rails extend essentially horizontally up to said door frame, and have a vertical end segment on a frame side, and wherein any other sections of said door panel that follow below said header section are guided in said plurality of guide rails that have a vertical segment along said door frame, a horizontal segment parallel to said running rail that holds said header section, as well as an arc that joins two of said segments, wherein said door drive is attached to one of said sections that is lowermost in said closed position of said door panel, and has at least one power take-off shaft mounted on said at least one section, with an impeller at the end of said power take-off shaft, and wherein said driven impeller engages in said guide rails for said sections and moves said door panel along said guide rails and is pressed against a running surface of said guide rail to move said door panel along said guide rails.