Roll-up doors and method for securing same

Patent metadata

Field	Value
Publication number	US-11248416-B2
Application number	US-201716069988-A
Country	US
Kind code	B2
Filing date	Jan 13, 2017
Priority date	Jan 13, 2016
Publication date	Feb 15, 2022
Grant date	Feb 15, 2022

Abstract

A roll-up door including a flexible curtain having a front surface, a back surface, a first end coupled to a shaft, a second end opposite the first end, and first and second side edges extending between the first end and the second end, the flexible curtain being moveable between a retracted position wherein the flexible curtain is coiled around the shaft and a deployed position wherein the flexible curtain is uncoiled from the shaft. A first retention band is mounted along at least a portion of the first side edge of the flexible curtain, the first retention band including an inner surface at least partially facing towards the flexible curtain, an outer surface opposite the inner surface, a fixed edge attached to the flexible curtain generally parallel to the first side edge, and a free edge opposite the fixed edge and movable relative to the fixed edge.

First claim

What is claimed is:

1. A roll-up door comprising:
a flexible curtain including a front surface, a back surface, a first end coupled to a shaft, a second end opposite the first end, and first and second side edges extending between the first end and the second end, the flexible curtain being moveable between a retracted position wherein the flexible curtain is coiled around the shaft and a deployed position wherein the flexible curtain is uncoiled from the shaft;
a first reinforcement band having a first band edge generally parallel to the first side edge and a second band edge opposite the first band edge, the first band edge coupled to the flexible curtain at the first side edge, the second band edge coupled to the flexible curtain between the first and second side edges; and
a first retention band mounted along at least a portion of the first band edge of the first reinforcement band, the first retention band including an inner surface at least partially facing towards the flexible curtain, an outer surface opposite the inner surface, a fixed edge attached to the first reinforcement band generally parallel to the first side edge, and a free edge opposite the fixed edge and movable relative to the fixed edge,
wherein the first reinforcement band is positioned between the first side edge of the flexible curtain and the fixed edge of the first retention band such that the first reinforcement band separates the first retention band from the flexible curtain.

2. The roll-up door of claim 1 , wherein the free edge of the first retention band is capable of deflecting toward or away from the flexible curtain.

3. The roll-up door of claim 1 , wherein the fixed edge of the first retention band is substantially aligned with the first side edge of the flexible curtain.

4. The roll-up door of claim 1 , wherein the first retention band comprises a single continuous component.

5. The roll-up door of claim 1 , wherein the first retention band includes a tapered end proximate the second end of the flexible curtain.

6. The roll-up door of claim 1 , further comprising a second retention band mounted along the second side edge of the flexible curtain, the second retention band including an inner surface at least partially facing towards the flexible curtain, an outer surface opposite the inner surface, a fixed edge attached to the flexible curtain generally parallel to the second side edge, and a free edge opposite the fixed edge and movable relative to the fixed edge.

7. The roll-up door of claim 1 , wherein the first reinforcement band and the first retention band are integrally formed.

8. The roll-up door of claim 1 , wherein the first reinforcement band has a thickness of 0.003 inches to 0.01 inches.

9. The roll-up door of claim 1 , wherein the first reinforcement band is positioned on the front surface of the flexible curtain.

10. The roll-up door of claim 1 , wherein the first reinforcement band is positioned on the back surface of the flexible curtain.

11. The roll-up door of claim 1 , wherein the flexible curtain comprises a first material and the first reinforcement band comprises a second material different from the first material.

12. The roll-up door of claim 1 , wherein the first retention band is coupled to the first reinforcement band by one or more fasteners.

13. The roll-up door of claim 1 , wherein the flexible curtain comprises a first material, the first retention band comprises a second material different from the first material, and the first reinforcement band comprises a third material different from the first material and the second material.

14. The roll-up door of claim 1 , wherein the inner surface of the first retention band includes a convexly curved contour extending between the fixed edge and the free edge when the flexible curtain is in the deployed position.

15. The roll-up door of claim 14 , wherein the outer surface of the first retention band includes a concavely curved contour extending between the fixed edge and the free edge when the flexible curtain is in the deployed position.

16. The roll-up door of claim 1 , wherein at least a portion of the first retention band is configured to transition from a curved configuration to a flattened configuration when the flexible curtain moves from the deployed position to the retracted position, and wherein at least a portion of the first retention band is configured to transition from the flattened configuration to the curved configuration when the flexible curtain moves from the retracted position to the deployed position.

17. The roll-up door of claim 16 , wherein in the flattened configuration, at least a portion of the inner surface of the first retention band is pressed against the flexible curtain.

18. The roll-up door of claim 1 , wherein the first retention band comprises a plurality of segments spaced along a length of the first side edge.

19. The roll-up door of claim 18 , wherein the first reinforcement band extends along at least a portion of the length of the first side edge such that more than one segment of the plurality of segments of the first retention band are coupled to the first reinforcement band.

20. The roll-up door of claim 1 , wherein the first retention band is made of an elastic material.

21. The roll-up door of claim 20 , wherein the elastic material is spring steel.

22. A roll-up door assembly comprising:
the roll-up door of claim 1 ; and
a first guide defining a track configured and dimensioned to receive at least a portion of the first side edge of the flexible curtain.

23. The roll-up door assembly of claim 22 , wherein the first retention band is configured to be received in the track defined by the first guide.

24. The roll-up door assembly of claim 23 , wherein the first retention band is configured to anchor the first side edge of the flexible curtain within the track defined by the first guide.

25. The roll-up door assembly of claim 22 , wherein the first guide includes a throat through which the first side edge of the flexible curtain is configured to be inserted, and wherein the throat has an opening width that is less than a distance between the free edge of the first retention band and the flexible curtain when the flexible curtain is in the deployed position.

26. The roll-up door assembly of claim 25 , wherein the first retention band is configured to deflect towards the flexible curtain in response to the first side edge of the flexible curtain being inserted into the throat.

27. The roll-up door assembly of claim 25 , wherein the first guide includes a first piece and a second piece configured to engage the first piece, wherein the throat is positioned between the first piece and the second piece.

28. The roll-up door assembly of claim 22 , wherein a portion of the first guide is configured to be received between the inner surface of the first retention band and the flexible curtain.

29. The roll-up door assembly of claim 22 , further comprising a second guide defining a track receiving at least a portion of the second side edge of the flexible curtain.

30. The roll-up door assembly of claim 29 , wherein the roll-up door further comprises a second retention band mounted along the second side edge of the flexible curtain, the second retention band including an inner surface at least partially facing towards the flexible

Assignees

• Cornellcookson Llc

Inventors

• Klish Ian
• Balay Joseph

Classifications

• A62C2/10

  Fire-proof curtains · CPC title

• E06B9/582

  Means to increase gliss, light, sound or thermal insulation · CPC title

• E06B2009/588

  Sealings for guides · CPC title

• E06B9/581 Primary

  Means to prevent or induce disengagement of shutter from side rails · CPC title

• E06B9/17

  Parts or details of roller shutters, e.g. suspension devices, shutter boxes, wicket doors, ventilation openings · CPC title