FIRE-RESISTANT SMOKE-SUPPRESSANT DEVICE

• US 20090165963A1
• Filed: 12/28/2007
• Published: 07/02/2009
• Est. Priority Date: 12/28/2007
• Status: Active Grant

• Current Assignee: Nohara Guard System Co. Ltd.
• Original Assignee: Nohara Guard System Co. Ltd.
• Inventors: Nakamura, Satoshi, Tashiro, Tadanori
• Granted Patent: US 7,735,539 B2
• Time in Patent Office: Days
• US Class Current: 160/238
• CPC Class Codes: A62C 2/10 Fire-proof curtains
• CPC Class Codes: A62C 2/18 Sliding dampers
• CPC Class Codes: E06B 9/42 Parts or details of roller blinds, e.g. suspension devices, blind boxes brackets or adjustable mountings for roller blinds and drawable curtains A47H1/13
• CPC Class Codes: E06B 9/64 with lowerable roller

Abstract

In general, the detailed description of embodiments of the disclosure is not intended to be exhaustive or to limit the disclosure to the precise form disclosed above. While specific embodiments of, and examples for, the disclosure are described above for illustrative purposes, various equivalent modifications are possible within the scope of the disclosure, as those skilled in the relevant art will recognize. The teachings of the disclosure provided herein can be applied to other systems, not necessarily the system described herein. The elements and acts of the various embodiments described herein can be combined to provide further embodiments.

Claims

1. A fire-resistant and smoke-suppressant device consisting of a fire-resistant sheet screen that is rolled up and down in front of an opening, sheet type magnetic strips situated on both sides of such screen, and support rails made of ferromagnetic materials situated on both sides of the opening;

a type of fire-resistant smoke-suppressant device in which such sheet type magnetic strips adhere to the support rails when deployed to protect the opening with the screen, has multiple other anchor means in such sheet type magnetic strips part, has a thermal expansion sheet that prevents temperature rise in all of these anchor means, and has a characteristic of preventing further temperature rise of all of these anchor means by expansion of the thermal expansion sheet in response to temperature rise due to fire or high temperature smoke.

2. A fire-resistant and smoke-suppressant device, as stated in Claim Item 1, which has a shape-memory alloy anchor mean as stated above that is in pole form, and has a characteristic of anchoring by connecting, by both its ends curving in respect to the rise in temperature, to the above support rail connecting part.

3. A fire-resistant and smoke-suppressant device, as stated in Claim Item 1, which is characterized by the above heat expansion sheet being located on the front side and both sides of all of the anchor means.

4. A fire-resistant and smoke-suppressant device, as stated in Claim Item 2, in which the other anchor means for shape-memory alloy as stated above are characterized by both ends of the pole form curving and connecting to the multiple connection holes located along the above stated support rail.

5. A fire-resistant and smoke-suppressant device, as stated in Claim Item 2, in which the other anchor means for shape-memory alloy as stated above are characterized by both ends of the pole form curving and connecting to the vertical groove located on the outside of the above stated support rail.

6. A fire-resistant and smoke-suppressant device, in which the above screen is rolled on to the lower shaft, and has a characteristic of being rolled down by its own weight, by releasing the roll-up wire that is anchored to both ends of such shaft.

7. A fire-resistant and smoke-suppressant device, as stated in Claim Item 2, in which the above stated screen has a characteristic of being released from the winch by a signal from a fire alarm, temperature detector, or smoke detector, or signal from a manual switch.