Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Subbarao Potharaju0
Ian Douglas Makinson0
Philip John Dickinson0
Date of Patent
May 1, 2007
0Patent Application Number
107358000
Date Filed
December 12, 2003
0Patent Primary Examiner
Patent abstract
A method of manufacturing an impeller includes the steps of: (a) forming an impeller having a plastic disc body and magnetisable material distributed and encapsulated within the body; (b) testing the imbalance of the impeller; (c) removing plastic material from the impeller to compensate for the tested imbalance; and (d) magnetising the magnetisable material to have an annular array of alternating poles.
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