Guide closing mechanism for fire shutters

Patent metadata

Field	Value
Publication number	US-12264539-B2
Application number	US-202117545570-A
Country	US
Kind code	B2
Filing date	Dec 8, 2021
Priority date	Dec 8, 2021
Publication date	Apr 1, 2025
Grant date	Apr 1, 2025

Abstract

In example implementations, a guide member is provided. The guide member includes a first portion to receive a first fastener to a second guide member to form a guide assembly having a gap, wherein an endlock of a fire shutter is positioned within the gap, a second portion to receive a second fastener to a wall, a third portion folded against the second portion, a fourth portion bent at 90-degrees or greater to the third portion.

First claim

The invention claimed is:

1. A guide assembly, comprising:
a first guide member, comprising:
a first portion to receive a first fastener to couple the first portion to a second guide member to form the guide assembly having a gap, wherein an endlock of a fire shutter is positioned within the gap;
a second portion to receive a second fastener to couple the first guide member to a wall;
a third portion folded internally against the second portion; and
a fourth portion bent at 90-degrees or greater to the third portion such that an end of the fourth portion faces the gap and the first portion and the fourth portion are parallel, wherein the first portion, the second portion, the third portion, and the fourth portion are formed from a single piece of metal.

2. The guide assembly of claim 1 , wherein the third portion is folded against the second portion with a 180-degree bend between the second portion and the third portion.

3. The guide assembly of claim 2 , wherein an angle of the 180-degree bend decreases as the first guide member is heated.

4. The guide assembly of claim 1 , wherein the third portion moves away from the second portion as the first guide member is heated.

5. The guide assembly of claim 1 , wherein the first portion is bent at 90-degrees relative to the second portion.

6. The guide assembly of claim 1 , wherein the second guide member comprises:
a respective first portion to receive the first fastener;
a respective second portion bent at 90-degrees from the respective first portion;
a respective third portion folded internally against the respective second portion; and
a respective fourth portion bent at 90-degrees or greater to the respective third portion such that an end of the fourth portion of first guide member faces an end of the respective fourth portion of the second guide member to form the gap and the respective first portion and the respective fourth portion are parallel, wherein the respective first portion, the respective second portion, the respective third portion, and the respective fourth portion are formed from a single respective piece of metal.

7. A guide assembly, comprising:
a first guide member, wherein the first guide member comprises:
a first guide member end that comprises an internal fold; and
a first guide member flange bent at 90-degrees or greater to the first guide member end; and

a second guide member, wherein the second guide member comprises;
a second guide member end that comprises an internal fold; and
a second guide member flange bent at 90-degrees or greater to the second guide member end, wherein the first guide member is coupled to the second guide member such that an end the first guide member flange faces an end of the second guide member flange.

8. The guide assembly of claim 7 , wherein the internal fold of the first guide member and the internal fold of the second guide member are 180-degrees.

9. The guide assembly of claim 7 , wherein the internal fold of the first guide member and the internal fold of the second guide member are relaxed when heated.

10. The guide assembly of claim 9 , wherein the first guide member flange moves towards the second guide member flange when the internal fold of the first guide member and the internal fold of the second guide member are relaxed.

11. The guide assembly of claim 10 , wherein the end of the first guide member flange and the end of the second guide member flange constrict against an endlock of a fire shutter when the internal fold of the first guide member and the internal fold of the second guide member are relaxed.

12. The guide assembly of claim 7 , wherein the internal fold of the first guide member and the internal fold of the second guide member each comprise;
a respective first planar portion; and
a respective second planar portion that is folded internally against the respective first planar portion.

13. The guide assembly of claim 7 , wherein a gap is formed between the first guide member flange and the second guide member flange to receive an endlock of a fire shutter.

14. A fire shutter assembly, comprising:
a fire shutter, wherein the fire shutter comprises a plurality of slats, wherein each one of the plurality of slats comprises an endlock on each opposite end of each slat; and
a guide assembly, wherein the endlock on each opposite end of each slat is positioned within the guide assembly, wherein the guide assembly comprises:
a first guide member, wherein the first guide member comprises:
a first guide member end comprising an internal fold; and
a first guide member flange bent at 90-degrees or greater to the first guide member end; and

a second guide member, wherein the second guide member comprises;
a second guide member end comprising an internal fold; and
a second guide member flange bent at 90-degrees or greater to the second guide member end, wherein an end of the first guide member flange and faces an end of the second guide member flange form a gap to receive the endlock.

15. The fire shutter assembly of claim 14 , wherein the endlock comprises a body portion and an end cap, wherein the end cap is larger than the body portion and larger than the gap.

16. The fire shutter assembly of claim 14 , wherein the internal fold of the first guide member and the internal fold of the second guide member are 180-degrees.

17. The fire shutter assembly of claim 14 , wherein the internal fold of the first guide member and the internal fold of the second guide member are relaxed when heated.

18. The fire shutter assembly of claim 17 , wherein the first guide member flange moves towards the second guide member flange when the internal fold of the first guide member and the internal fold of the second guide member are relaxed.

19. The fire shutter assembly of claim 18 , wherein the first guide member flange and the second guide member flange constrict against the endlock when the internal fold of the first guide member and the internal fold of the second guide member are relaxed.

Assignees

• Cornellcookson Llc

Inventors

• Fernando Brian Rishi Kachchakaduge
• Rebarchak Christopher John
• Bullen John Elias

Classifications

• E06B2009/1577

  Slat end pieces used for guiding shutter · CPC title

• A62C2/10

  Fire-proof curtains · CPC title

• F16C29/02

  Sliding-contact bearings · CPC title

• A62C2/18 Primary

  Sliding dampers · CPC title

• E06B9/581 Primary

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