Patent ID: 7913739
Filing Date: 2011-03-29
Classification: E06B

Abstract:
1. A high-speed industrial roller door having a door leaf which covers the door opening and which is guided in lateral guides, a drive which acts on the door leaf in order to move it from an open position into a closed position and vice versa, wherein in the open position the door leaf is accommodated in a spiral section, arranged in the vicinity of the door lintel, of the lateral guides in such a way that adjacent areas of the door leaf are not in contact with one another, and having a weight compensation device, wherein the drive has at least two extension arms, each having one end thereof rotationally coupled which it is coupled in an articulated manner to a lintel-side end of the door leaf, wherein the extension arms are arranged spaced apart from one another in the width of the door and can be pivoted synchronously about a pivoting axis in a central area of the spiral section, and wherein the distance between rotational coupling points of the extension arms on the door leaf and the pivoting axis of the extension arms is automatically varied as the door leaf is moved between it's open and closed positions.