Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Katsumi Ishii0
Shinichi Chikura0
Masashi Beppu0
Yuuji Nishida0
Yasuhiro Uda0
Hideki Matsuda0
Hiroki Fujioka0
Date of Patent
January 11, 2011
0Patent Application Number
122982990
Date Filed
April 20, 2007
0Patent Primary Examiner
Patent abstract
A membrane element sealing material holding member comprising a central opening for insertion of a center tube of spiral membrane element, peripheral orifice for flowing of a raw liquid into a membrane end portion of membrane element and outer circumferential part for holding of circular sealing material, wherein the central opening has inner circumferential surface of cylindrical form with a diameter larger than the outer diameter of the inserted center tube, and wherein at three or more positions on the inner circumferential surface, there is provided projection that has sloping face on its side of center tube insertion and is deformable at the time of insertion of center tube with an outer diameter larger than that of incircle.
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