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. 29, 1989
Filed:
Jan. 12, 1988
Applicant:
Inventors:
David L Reid, Brighton, MI (US);
Robert J Weimer, Columbus, IN (US);
Assignee:
Cummins Engine Company, Inc., Columbus, IN (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F / ; F01M / ;
U.S. Cl.
CPC ...
364550 ; 36442403 ; 1231 / ; 3404574 ;
Abstract
An oil change interval monitor is provided which senses diesel engine variables such as oil temperature, fuel flow and the volume of oil added to the engine since the last oil change and combines these variables with values determined by known engine parameters to provide a continuously updated indication of the percentage of oil life used by the engine since the last oil change.