Flexible or portable closure – partition – or panel – Plural strip – slat – or panel type – Roll type
Reexamination Certificate
2011-03-29
2011-03-29
Johnson, Blair M. (Department: 3634)
Flexible or portable closure, partition, or panel
Plural strip, slat, or panel type
Roll type
C160S191000, C160S238000
Reexamination Certificate
active
07913739
ABSTRACT:
A high-speed industrial roller door includes a door leaf that is guided in lateral guides and a drive that acts on the door leaf to displace the latter from an open position into a closed position and vice versa. The door leaf is held in the open position so that adjacent areas of the door leaf are not in contact with one another, in a spiral section of the lateral guides located in the vicinity of the door lintel. The roller door also includes a weight compensation device. The drive has two extension arms that are coupled via joints to the lintel end of the door leaf, said arms being situated at a distance from one another across the door width and being synchronously pivoted about a pivoting axis in a central area of the spiral section. The distance between the coupling points of the extension arms on the door leaf and the pivoting axis of the extension arms can be varied. This permits the provision of a roller door with a drive that is situated near the door lintel, for which the degree of potential damage during a collision with the door leaf is reduced in relation to prior arrangements.
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Breznikar Joze
Rejc Gabrijel
Sentjurc Matjaz
Efaflex Inzeniring D.O.O. Ljubljana
Johnson Blair M.
Nixon & Vanderhye PC
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