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:
Dec. 28, 1993
Filed:
Dec. 17, 1992
Applicant:
Inventors:
Sheldon A Vermes, Shorewood, MN (US);
David M Botts, Spring Park, MN (US);
Assignee:
WTC Industries, Inc., Plymouth, MN (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01D / ; C04B / ;
U.S. Cl.
CPC ...
210264 ; 210282 ; 210284 ; 210315 ; 2104972 ; 2105101 ; 55523 ;
Abstract
A water filter cartridge for use in a water filtration system comprises a generally cylindrical ceramic pre-filter having a chamber containing a purification resin. An exit cap having a porous disc therein is attached at a first end of the pre-filter. Water to be filtered passes radially through the pre-filter into the chamber. The water then passes through the purification resin and the porous disc and exits the water filter cartridge through an opening in the exit cap. The ceramic pre-filter can be cleaned when it begins to lose its effectiveness, enabling it to be reused.