Assa Abloy Entrance Systems Ab

Albany International Corporation

Friedhelm Frede

Holger Siewert

Meinolf Steffen

The invention relates to an overhead door for covering a door opening comprising a door blade () with a plurality of panels (), said door blade () being movable between a vertical, closed position and a horizontal, opened or overhead position within a side frame () comprising double-sided a vertical track () and a horizontal track (), connected by a connecting portion (), respectively, and with a belt () or a chain associated with one side each of the said side frame () to lift the panels () from said vertical position to said horizontal position. To develop the stated overhead door in a way that the advantages of a high speed rollup door and an overhead door are combined, to offer an overhead door with a low space requirement, low maintenance requirements and a high speed closing possibility, the stated overhead door comprises driving means () for simultaneously driving a plurality of said panels ().

High speed overhead door

The invention relates to a roller shutter for opening and closing a doorway () having a door blade (), the door blade () comprises several rigid shutter elements () which are hinged with each other, the shutter elements () are guided by side rails () at opposed sides of the doorway (), wherein each shutter element () provides an end piece () at each horizontally spaced end of the shutter element () for spacing layers of rolled up shutter elements () apart from each other, each end piece () has at least one concave section () for coiling the end pieces () on a coiling device () and/or in layers on top of each other. For reducing the risk of weakening a connection between the end piece () and the shutter element (), for reducing noise and/or vibrations during the opening and/or closing of the door way and/or to increase the stability of the roller shutter the roller shutter () is characterized in that at least some of the end pieces () having at least one plane gliding section (), the plane gliding section () is arranged for interacting with a slide guide () of the side rail () for leading the end pieces () into and/or out of the side rails ().

Roller shutter for opening and closing a doorway

The invention relates to a sealing device () for sealing a gap () between a lintel () and a roller shutter (). The sealing device () has a sealing means () for arranging at the upper end of a top shutter element () of the roller shutter (). For covering a gap () in a functional and/or cost-effective way between a lintel () and a roller shutter (), preferably in case of a completely unrolled door blade (), the sealing device () is characterized in that a swivel mechanism () is provided for swivelling the sealing means () from a sealing position into a winding position and from a winding position into a sealing position.

Sealing device for sealing a gap between a lintel and a roller shutter and a roller shutter with such a sealing device

The invention relates to a roller shutter () for opening and closing a doorway having a door leaf () and side rails () for guiding the door leaf (), and having a coiling device () for selectively rolling up the door leaf () for opening the doorway and unrolling the door leaf () for closing the doorway. For reducing or avoiding the risk of creating a polygon effect and for providing a roller shutter () comprising a door leaf having rigid shutter elements with an increased height and/or with the possibility of applying an increased speed for opening and/or closing the door leaf the roller shutter () is characterized in that a separate guiding device () is provided for guiding the door leaf () in the area between the side rail () and the coiling device (), wherein the guiding device () is arranged to adjust to an increasing diameter and to a decreasing diameter of the coiling device ().

A mechanical link is provided to lessen or eliminate air infiltration between a topmost lamella of a rollup door and the lintel of the doorway. The link is deployed in an unfolded configuration to support the topmost lamella against deflection caused by application of a force perpendicular to the plane of the door. The link components are folded into a storage position upon rolling up of the door upon a series of take-up discs.

System for stabilizing the top lamella against wind load by using a linear chain

An industrial rollup door to selectively cover a doorway opening or to provide industrial guarding is presented. The rollup door comprises door leaf, comprised of lamellae, or panels a flexible strip as a lifting belt for selectively lifting and lowering the door, a continuous dampening profile running along the outer surface of each lamellae near an end, and a rotatable spiral disc to accept the lamellae as the door is lifted and to release the lamellae as the door is lowered.

High speed rollup door with rollable door leaf

A method and apparatus for preventing damage to an industrial door during an impact, the apparatus including a roller door having a plurality of lamellae, and a plurality of end pieces connectable to the lamellae. The industrial door also includes a drive system, connectable to the plurality of end pieces for raising and lowering the door. The lamellae include a plurality of openings formed therein and, arranged on at least one distal end thereof. The end pieces include a plurality of friction fit security devices for engaging the openings.

System to guide the slats of an industrial roller door to reduce damages after crash

A counterbalance system for a rollup door system having a drum in which the counterbalance provides a counter force acting at a distance from the center of rotation of the drum. The counter force is variable in both direction and magnitude at various angular positions of the drum.

Adjustable counterbalance system for roller doors

A rollup door comprising a door leaf of increasing width from top to bottom and having a narrower part on the top and a wider part on the bottom, and flexibility in the rolling direction; channels for guiding the door; and two modules for rolling and unrolling the door leaf so that a number of leaf layers do not come in contact. The modules are situated on each side of the door, have the same center axes and are successive radially enlarged so that on opening and closing of the door, the narrower and wider parts of the leaf engage the smaller and larger parts respectively of the modules.

Growing community of inventors

Erwitte, Germany

Friedhelm Frede