IMPELLER ASSEMBLY AND METHOD OF USING SAME - Patent 2262679

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EP 2 262 679 A1

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(43)	Date of publication:
	22.12.2010 Bulletin 2010/51

(21)	Application number: 08733052.8

(22)	Date of filing: 01.04.2008

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International Patent Classification (IPC):

B63H 1/20^(2006.01)

(86)	International application number:
	PCT/US2008/059014

(87)	International publication number:
	WO 2009/110914 (11.09.2009 Gazette 2009/37)

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

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Priority:

06.03.2008 US 43907

(71)	Applicants:
	TENNANT COMPANY Minneapolis, MN 55440 (US) Wydra, Larry D. Plymouth, MN 55441 (US)

(72)	Inventor:
	WYDRA, Larry, David Plymouth, MN 55441 (US)

(74)	Representative: Spencer, Michael David et al
	Bromhead Johnson 19 Buckingham Street London WC2N 6EF London WC2N 6EF (GB)

(54)	IMPELLER ASSEMBLY AND METHOD OF USING SAME