(19)
(11) EP 1 922 488 A2

(12)

(88) Date of publication A3:
10.05.2007

(43) Date of publication:
21.05.2008 Bulletin 2008/21

(21) Application number: 06813316.4

(22) Date of filing: 08.08.2006
(51) International Patent Classification (IPC): 
F04D 29/04(2006.01)
(86) International application number:
PCT/US2006/030778
(87) International publication number:
WO 2007/021656 (22.02.2007 Gazette 2007/08)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

(30) Priority: 10.08.2005 US 707088 P
07.08.2006 US 500123

(71) Applicant: Envirotech Pumpsystems, Inc.
Salt Lake City, UT 84110-0209 (US)

(72) Inventor:
  • PAULIN, Greg
    Alpine, UT 84004 (US)

(74) Representative: Vleck, Jan Montagu 
Reddie & Grose, 16 Theobalds Road
London WC1X 8PL
London WC1X 8PL (GB)

   


(54) LOW-PROFILE IMPELLER BOLT