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:
Jul. 31, 1990
Filed:
Oct. 10, 1989
Applicant:
Inventor:
Paul D Maples, San Marcos, CA (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
21032174 ; 21032176 ; 21032183 ; 21032185 ; 2104934 ; 2104971 ;
Abstract
A reverse osmosis filtration device which comprises a flexible elongated membrane bladder spirally wrapped around a purified water duct in a series of spaced-apart coils supported about their edges by perforated spacers. The device is installed in a water supply conduit to extract a volume of purified water under typical household line pressure while allowing the brine-carrying feed water for other normal household usage such as clothes and dishwashing, toilet flushing, showering and bathing.