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:
Oct. 17, 1989
Filed:
Jun. 20, 1984
Applicant:
Inventor:
Walter P Casey Jr, Las Vegas, NV (US);
Assignee:
Wetco of Delaware, Inc., Decatur, GA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
21032187 ; 2103232 ; 2104971 ; 210506 ;
Abstract
An element for a reverse osmosis water purification cartridge consists of a long rigid plastic tube having peripheral V-shaped grooves along its length. A nylon monofilament is helically wrapped along the length of the element with wrap spacings of about 1/3-2/3 of the fiber diameter. The element is formed by placing liquid membrane-forming material on the wrapped tube; the membrane intrudes 1-2 mils between the adjacent wraps of monofilament.