Roller door system

Patent metadata

Field	Value
Publication number	US-9637974-B2
Application number	US-201415032063-A
Country	US
Kind code	B2
Filing date	Oct 23, 2014
Priority date	Oct 30, 2013
Publication date	May 2, 2017
Grant date	May 2, 2017

Abstract

A roller door system ( 100 ) particularly for opening and closing a doorway ( 120 ) defined in the wall of a lightweight structure ( 110 ) such as a marquee, hangar, field hospital, emergency shelter and the like. The door system comprises a rollable door ( 150 ) secured, in use, along one edge of the doorway ( 152 ); a roller ( 140 ) for rolling and unrolling the rollable door about the roller; an opening mechanism and a closing mechanism for controlling the deployment of the rollable door by translating the roller across the doorway; and reusable sealing means ( 135, 136, 155, 156 ) for sealing between the lateral margins of the rollable door and the doorway; characterized in that the rollable door comprises a plurality of collapsible hoses ( 165, 166 ) connected to a pressurized fluid power system ( 160, 161, 163 ) such that in use a positive pressure applied to the fluid power system causes the rollable door to unroll from the roller and controls the deployment of the rollable door.

First claim

The invention claimed is:

1. A roller door system, for opening and closing a doorway defined in the wall of a structure, comprising a rollable door (a) having a bottom portion and (b) secured, in use, along a top side of the doorway; a roller attached to the bottom portion of the rollable door for rolling and unrolling the rollable door about the roller; a door opening means and a door closing means for controlling the deployment of the rollable door by translating the roller across the doorway; and reusable sealing means for sealing between the lateral margins of the rollable door and the doorway; and wherein the door closing means comprises a pressurised fluid power system comprising a plurality of collapsible hoses associated with the rollable door and configured to cause the rollable door to unroll from the roller when expanded by fluid.

2. A roller door system as claimed in claim 1 wherein the pressurised fluid power system is a hydraulic system comprising hydraulic fluid.

3. A roller door system as claimed in claim 2 wherein the hydraulic fluid comprises water.

4. A roller door system as claimed in claim 1 wherein the pressurised fluid power system comprises a manually operated pump.

5. A roller door system as claimed in claim 1 , wherein the rollable door overlaps the lateral margins of the doorway and wherein the reusable sealing means are provided between the overlapping lateral margins of the rollable door and the doorway.

6. A roller door system as claimed in claim 1 wherein the reusable sealing means comprise flexible magnetic strips.

7. A roller door system as claimed in claim 1 wherein the door opening means comprises at least one spring biased to roll the rollable door about the roller.

8. A roller door system as claimed in claim 7 wherein the rollable door comprises a plurality of rolled ribbons of spring material.

9. A roller door system as claimed in claim 1 wherein the roller comprises a tether and toggle at each of its ends.

10. A roller door system as claimed in claim 9 wherein the toggle is designed to cooperate with a guide channel provided in the wall of the structure parallel to the lateral sides of the doorway.

11. A roller door system as claimed in claim 9 wherein the toggle is attached to or acts as the slider of an interlocking fastener.

12. A tent comprising the roller door system of claim 1 , wherein the doorway is defined in a flexible wall of the tent.

Assignees

• Secr Defence

Inventors

• Thompson Duncan Godfrey Mervyn

Classifications

• A62C2/248

  pneumatic · CPC title

• E06B9/56

  Operating, guiding or securing devices or arrangements for roll-type closures; Spring drums; Tape drums; Counterweighting arrangements therefor (devices of general interest specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material B65H75/34) · CPC title

• E06B9/66 Primary

  with a roller situated at the bottom · CPC title

• A62C2/10 Primary

  Fire-proof curtains · CPC title

• E04H15/58

  Closures; Awnings; Sunshades · CPC title