EXTRACTION FAN ASSEMBLY INCLUDING A DAMPER THAT CLOSES FIRMLY WHEN THE FAN IS NOT RUNNING AND REDUCES THE PRESSURE DROP WHEN THE FAN IS RUNNING AT FULL SPEED - Patent 2652413

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EP 2 652 413 A1

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(43)	Date of publication:
	23.10.2013 Bulletin 2013/43

(21)	Application number: 11847989.8

(22)	Date of filing: 07.12.2011

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International Patent Classification (IPC):

F24F 13/14^(2006.01)
F04D 25/14^(2006.01)

A01K 1/00^(2006.01)
F24F 7/007^(2006.01)

(86)	International application number:
	PCT/CA2011/050752

(87)	International publication number:
	WO 2012/079167 (21.06.2012 Gazette 2012/25)

(84)	Designated Contracting States:
	AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

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Priority:

13.12.2010 CA 2725245
12.04.2011 CA 2737208
29.07.2011 CA 2748452

(71)	Applicant: Labrecque, Robert
	St. Bernard de Dorchester, Quebec G0S 2G0 (CA)

(72)	Inventor:
	Labrecque, Robert St. Bernard de Dorchester, Quebec G0S 2G0 (CA)

(74)	Representative: Dempster, Benjamin John Naftel
	Withers & Rogers LLP 4 More London Riverside London SE1 2AU London SE1 2AU (GB)

(54)	EXTRACTION FAN ASSEMBLY INCLUDING A DAMPER THAT CLOSES FIRMLY WHEN THE FAN IS NOT RUNNING AND REDUCES THE PRESSURE DROP WHEN THE FAN IS RUNNING AT FULL SPEED