The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 11, 2011
Filed:
Apr. 20, 2007
Yasuhiro Uda, Ibaraki, JP;
Masashi Beppu, Ibaraki, JP;
Hiroki Fujioka, Ibaraki, JP;
Yuuji Nishida, Ibaraki, JP;
Shinichi Chikura, Ibaraki, JP;
Hideki Matsuda, Ibaraki, JP;
Katsumi Ishii, Ibaraki, JP;
Yasuhiro Uda, Ibaraki, JP;
Masashi Beppu, Ibaraki, JP;
Hiroki Fujioka, Ibaraki, JP;
Yuuji Nishida, Ibaraki, JP;
Shinichi Chikura, Ibaraki, JP;
Hideki Matsuda, Ibaraki, JP;
Katsumi Ishii, Ibaraki, JP;
Nitto Denko Corporation, Osaka, JP;
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.