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. 17, 2012
Filed:
Jan. 13, 2009
L. Steven Cline, Fayetteville, NC (US);
Travis Canup, Fayetteville, NC (US);
Rajan Ahuja, Fayetteville, NC (US);
L. Steven Cline, Fayetteville, NC (US);
Travis Canup, Fayetteville, NC (US);
Rajan Ahuja, Fayetteville, NC (US);
Purolator Filters NA LLC, Fayetteville, NC (US);
Abstract
A fluid filter and an end cap of the fluid filter are described. The filter may be a spin on oil filter, which includes a combination dual valve element defining an integral anti-drain back valve and an integral relief valve, a retainer assembly for maintaining the combination dual valve element in position in the end cap, relative to the filter. The combination dual valve element includes an ADB sealing lip forming an anti-drain back valve portion, and an RV sealing lip forming a relief valve portion.