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:
Jun. 08, 1976
Filed:
Jun. 19, 1975
Kiyoshi Ishii, Saitama, JA;
Takehisa Kubo, Ohmiya, JA;
Daicel, Ltd., Tokyo, JA;
Abstract
A separator in which at least one tubular separating element comprising a semipermeable membrane in the shape of a lined envelope and a corrugated spacer which are wound spirally around a collecting pipe having a plurality of small transverse bores. The spacer is positioned between adjacent convolutions of the envelope and forms channels which extend substantially parallel to the collecting pipe. The inner part of the envelope is open to the outer periphery of the collecting pipe. The spacer is provided with notches in opposite edges thereof arranged so that the notches in the respective edges open in opposite circumferential directions. The notches allow passage of the liquid being treated, as well as objects for cleaning the membrane, from one channel to the next. The separator and the collecting pipe are housed in a pressure vessel. Cushion gaskets are pressed against the ends of the semipermeable film and the corrugated spacer thereby forming a continuous tortuous passage for flow of the liquid to be treated and for movement of membrane-cleaning objects.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile