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. 03, 2002
Filed:
Aug. 11, 2000
Applicant:
Inventors:
Henry L. Neufeld, Tulsa, OK (US);
L. Steven Cline, Fayetteville, NC (US);
Assignee:
Purolator Products NA, Inc., Fayetteville, NC (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D 3/5153 ; B01D 3/514 ; B01D 2/708 ;
U.S. Cl.
CPC ...
B01D 3/5153 ; B01D 3/514 ; B01D 2/708 ;
Abstract
An oil filter assembly includes a filter housing and a release valve for regulating oil drainage from a filter chamber in the filter housing. A filter module is arranged in the filter chamber to engage the release valve. A first biasing element normally moves the release valve to an opened position allowing drainage of oil from the filter chamber to urge the filter module to cause the release valve to move against and overcome a biasing force generated by the first biasing element to the closed position when the filter module is installed in a oil-filtering position in the filter housing.