Fabric fire rated door

Patent metadata

Field	Value
Publication number	US-10174545-B2
Application number	US-201715429370-A
Country	US
Kind code	B2
Filing date	Feb 10, 2017
Priority date	Feb 12, 2016
Publication date	Jan 8, 2019
Grant date	Jan 8, 2019

Abstract

A fabric fire rated door is described. The door utilizes a fire resistant fabric curtain with an end lock attachment. A tubular steel shaft is driven by an internal tube motor. The shaft is supported to minimize deflection. Single door shafts can also be joined together with a coupler shaft to create infinitely wide doors. The coupler shaft is spring loaded to act as a take up reel for a coupling curtain which will overlap each adjacent single door shaft. All curtains are attached to the same bottom bar. A hood covers the shaft, curtain, and the supports that run across the width of the door. The curtain travels over these horizontal supports as it drops down through the hood opening. The horizontal supports keep the curtain in position for proper seal during a fire/smoke event.

First claim

What is claimed is:

1. A door system comprising:
an operational assembly curtain comprising a bottom bar assembly, the operational assembly curtain retained within vertically oriented side members by a respective operational assembly curtain side geometry and retained within the bottom bar assembly upon application of a pressure;
a counterbalance assembly fixed to the operational assembly curtain; and
an operational assembly to operate the counterbalance assembly;
wherein,
the bottom bar assembly comprises:
a first angle bottom bar;
a second angle bottom bar; and
a bottom bar center flat section therebetween; wherein the center flat section deflects vertically in a center of the door system between the first and second angle bottom bars while being contained within the first and second angle bottom bars;

the operational assembly curtain is secured to the bottom bar center flat section; and
the bottom bar center flat section is fixed to the first and second angle bottom bars at each end.

2. The door system of claim 1 wherein the bottom bar center flat section is contained within a curtain bottom hem pocket.

3. The door system of claim 2 further comprising:
a plurality of first angle bottom bars, each pair joined with a respective first angle bottom bar connector
a plurality of second angle bottom bars, each pair joined with a respective second angle bottom bar connector; and
a plurality of bottom bar center flat sections, each pair overlapped inside of the curtain bottom hem pocket.

4. The door system of claim 2 further comprising multiple bottom bar center flat sections, each pair overlapped inside of the curtain bottom hem pocket.

5. The door system of claim 1 further comprising multiple operational assembly coiling curtains and counterbalance assemblies, each pair of operational assembly coiling curtain and counterbalance assembly separated by a respective coupler shaft fixed to a coupling curtain comprising the curtain bottom hem pocket, wherein all curtains are fixed to its adjacent curtain when the door system is in a smoke protective state.

6. The door system of claim 5 wherein a curtain is fixed to its adjacent curtain by hook and loop; the coupler shaft comprises a hook and loop separator channel and a coupling curtain cross brace; the coupler shaft is spring loaded; and all curtains are attached to the same bottom bar assembly.

7. The door system of claim 6 further comprising a horizontal support member.

8. The door system of claim 1 wherein the side geometry comprises a three piece guide and an operational assembly curtain L shaped retention member; the three piece guide comprising a fascia fastener attached to a fascia guide, and inner guide for attachment to a wall, and an outer guide fastener attaches an outer guide to the inner guide.

9. The door system of claim 1 wherein the side geometry comprises a two piece guide and an operational assembly curtain end lock; two piece guide comprising an outer guide and an inner guide; and the curtain end lock comprises a plurality of curved end locks.

10. The door system of claim 1 further comprising a curtain stop assembly.

11. The door system of claim 10 wherein the curtain stop assembly comprises a spring loaded pin and a spring loaded shaft stop mechanism.

12. The door system of claim 11 further comprising a curtain slot at a predetermined location to allow the spring loaded pin to extend through the curtain before the curtain fully unwinds.

13. A door system comprising:
a first and second operational assembly curtain, each comprising a respective bottom hem pocket;
the first and second operational assembly curtains separated by a coupler shaft fixed to a coupling curtain, the coupling curtain comprising the bottom hem pocket;
a respective counterbalance assembly fixed to each operational assembly curtain;
an operational assembly to operate a respective operational assembly curtain counterbalance assembly; and
a bottom bar assembly;
wherein,
the bottom bar assembly comprises:
a first angle bottom bar;
a second angle bottom bar; and
a bottom bar center flat section therebetween;

the operational assembly curtain and coupling curtain are secured to the bottom bar center flat section; wherein the bottom bar center flat section is contained within the curtain bottom hem pocket;
the bottom bar center flat section is fixed to the first and second angle bottom bars at each end; and
all curtains are fixed to its adjacent curtain when the door system is in a smoke protective state.

14. The door system of claim 13 wherein the bottom bar assembly comprises:
a plurality of first angle bottom bars, each pair joined with a respective first angle bottom bar connector
a plurality of second angle bottom bars, each pair joined with a respective second angle bottom bar connector; and
a plurality of bottom bar center flat sections, each pair overlapped inside of the curtain bottom hem pocket.

15. The door system of claim 13 further comprising multiple bottom bar center flat sections, each pair overlapped inside of the curtain bottom hem pocket.

16. The door system of claim 13 wherein a curtain is fixed to its adjacent curtain by hook and loop; the coupler shaft comprises a hook and loop separator channel and a coupling curtain cross brace; the coupler shaft is spring loaded; and all curtains are attached to the same bottom bar assembly.

17. The door system of claim 13 further comprising a horizontal support member.

18. The door system of claim 13 wherein the side geometry comprises a three piece guide and an operational assembly curtain L shaped retention member; the three piece guide comprising a fascia fastener attached to a fascia guide, and inner guide for attachment to a wall, and an outer guide fastener attaches an outer guide to the inner guide.

19. The door system of claim 13 wherein the side geometry comprises a two piece guide and an operational assembly curtain end lock; two piece guide comprising an outer guide and an inner guide; and the curtain end lock comprises a plurality of curved end locks.

20. The door system of claim 13 further comprising a curtain stop assembly.

21. The door system of claim 20 wherein the curtain stop assembly comprises a spring loaded pin and a spring loaded shaft stop mechanism.

22. The door system of claim 21 further comprising a curtain slot at a predetermined location to allow the spring loaded pin to extend through the curtain before the curtain fully unwinds.

23. A door system comprising:
a first and second operational assembly curtain, each comprising a respective bottom hem pocket;
the first and second operational assembly curtains separated by a coupler shaft fixed to a coupling curtain, the coupling curtain comprising the bottom hem pocket;
a respective counterbalance assembly fixed to each operational assembly curtain;
an operational assembly to operate a respective operational assembly curtain counterbalance assembly;
a horizontal support member;
a curtain stop assembly comprising a spring loaded pin and a spring loaded shaft stop mechanism; and
a bottom bar assembly comprising:
a plurality of first angle bottom bars, each pair joined with a respective first angle bottom bar connector
a plurality of second angle bottom bars, each pair joined with a respective second angle bottom bar connector; and
a plurality of bottom bar center flat sections, each pair overlapped inside of the curtain bottom hem

Assignees

• Ciw Entpr Inc
• Cornellcookson Llc

Inventors

• Janick James
• Feist Brian
• Dawdy David
• Klish Ian

Classifications

• E06B9/17046

  Bottom bars · CPC title

• E06B9/171

  Rollers therefor; Fastening roller shutters to rollers · CPC title

• E06B2009/801

  Locking arrangements · CPC title

• E06B9/58

  Guiding devices · CPC title

• E06B9/13

  with closing members of one piece, e.g. of corrugated sheet metal · CPC title