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(11)    Patent No :    AP 2173   
(21)    Application No :    AP/P/2007/003998   
(22)    Filing Date :    03.11.2005   
(24)    Date of Grant &    19.11.2010   
           
(45)    Publication :

(30)  Priority Data       
(33) Country    (31) Number    (32) Date
SE    0402840-3    19.11.2004

(84)    Designated State

BW    GM    GH    KE    LS    MW  MZ   NA   SL
SD    SZ    T Z    UG    ZM    ZW
 

(73) Applicant(s)

ITT MANUFACTURING ENTERPRISES INC, 1105 North

Market Street, Wilmington, DE 19801,
United States of America

(72) Inventors

LINDSKOG Martin, Sweden

(74) Representative

HONEY & BLANCKENBERG

(51)  International  Classification   F04D29/24 (2006.01)    F04D29/18 (2006.01)


(54)    Title

Impeller wheel

(57)    Abstract

The present invention relates to a pump impeller (12) of a centrifugal or half axial type to be used in a pump for pumping liquids, wherein the impeller is arranged with one or several vanes (18), that the vanes are attached to cover discs (12, 16) on each side, forming a so called closed impeller wheel, characterized in that the leading edges (40) of the vanes are swept backwards

(56)    Documents Cited :    US 4428717 Y    EP 395604 Y    US 5573374 Y    US 6276899 Y

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