Quick-action rolling shutter door
AssigneeRite-Hite Holding Corporation
InventorGuido Laugenbach
Life of this patent
Estimating the term…
Abstract
A quick-action rolling shutter door and modules thereof used for closing openings in the walls of warehouses or factory buildings in order to restrict the loss of energy from heated or cooled rooms, and to protect the environment by keeping escaping noise, odors and dust emissions to a minimum. A flexible quick-action rolling shutter door hanging (12) can be wound up onto a roller, is guided on at least one side by a guiding device, and has at least one thick-walled insulating layer (36, 38) consisting of plastic foam material.
Claims29
A quick-action rolling shutter door hanging which can be wound into a generally circular spiral configuration, the hanging comprising:
- a first separately formable, thick-walled insulating layer of foamed plastic material;
- and
- a second separately formable, thick-walled insulating layer coupled to the first insulating layer alone spaced apart lines extending transversely to a direction of travel of the door hanging, wherein the first and second insulating layers are at least partially uncoupled between the spaced apart lines, and wherein the first and second insulating layers are adapted to assume a curved shape as the first and second insulating layers are wound into the spiral configuration.
A quick-action rolling shutter door hanging which can be wound into a generally circular spiral configuration, the hanging comprising:
- a first thick-walled insulating layer of foamed plastic material;
- and
- a second thick-walled insulating layer counled to the first thick-walled insulating layer along lines extending transversely to the direction of travel of the door hanging, wherein the first and second insulating layers are adapted to assume a curved shape as they are wound into the spiral configuration, and wherein at least one of said first or second insulating layers has expansion slots extending transversely to a direction of travel of the door hanging, on an external side thereof.
Use of a flexible plastic sheet of a foamed polyolefin which is cold-resistant up to at least −35° C., has a K-value <2.5, for producing a quick-action rolling shutter door hanging, wherein said flexible plastic sheet is movable between a flat configuration and a spiral configuration.
A quick-action rolling shutter door hanging comprising:
- a first thick-walled insulating layer of foamed plastic material and having a first surface that extends transversely relative to a direction of travel of the door hanging;
- a second thick-walled insulating layer having a second surface that extends transversely relative to the direction of travel of the door hanging;
- the first and second layers coupled together at said first and second surfaces along a plurality of spaced apart lines extending transversely relative to the direction of travel of the door hanging;
- and
- the first and second layers adapted to deform to a curved shape in response to winding the door hanging into a generally spiral configuration.
A method for forming a rolling shutter door hanging which can be wound into a generally circular spiral configuration, the method comprising:
- forming a first insulating layer of a foamed material, the first insulating layer having a first surface that extends transversely along a direction of travel of the door hanging;
- forming a second insulating layer having a second surface that extends transversely along the direction of travel of the door hanging;
- and
- coupling the first and second surfaces together at a plurality of spaced apart lines to couple the first insulating layer to the second insulating layer, wherein the coupled first and second insulating layers assume a curved shape in response to winding the door banging into the generally circular spiral configuration.
A quick-action rolling shutter door hanging which can be wound into a generally circular spiral configuration, the hanging comprising:
- a first thick-walled insulating layer of foamed plastic material;
- and
- a second thick-walled insulating layer coupled to the first thick-walled insulating layer, wherein the first and second insulating layers are adapted to assume a curved shape as they are wound into the spiral configuration and wherein at least one of the first or second insulating layers has expansion slots extending transversely to a direction of travel of the door hanging, on an external side thereof.
Dependencies are inferred from the claim text.