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:
Aug. 01, 2000
Filed:
Oct. 31, 1996
Applicant:
Inventor:
Edward A Covington, Gastonia, NC (US);
Assignee:
Dana Corporation, Toledo, OH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
210130 ; 210149 ; 13711513 ; 1375124 ; 137853 ;
Abstract
A lubricating oil filter cartridge is disclosed herein. The filter cartridge includes a bypass valve configured and arranged for opening at a selected oil pressure that is substantially higher at low oil temperatures than at the higher operating temperatures to reduce the amount of oil that bypasses the filter at low oil temperatures. The bypass valve is preferably formed of a temperature sensitive elastic material, for example, low swell, high modulus silicone, having an elastic modulus which is substantially higher at low oil temperatures than at higher oil temperatures.