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. 30, 1997
Filed:
May. 16, 1995
Applicant:
Inventors:
Kiyoshi Inoue, Kanagawa-ken, JP;
Masakuni Hirata, Kanagawa-ken, JP;
Assignee:
Nippon Oil Company Limited, , JP;
Primary Examiner:
Int. Cl.
CPC ...
F01M / ;
U.S. Cl.
CPC ...
1231 / ; 137391 ; 184-15 ;
Abstract
A method and apparatus for replenishing the lubricating oil of an internal combustion engine involving, during operation of the engine, continuously supplying a predetermined quantity of new oil from a reserve tank in which lubricating oil is stored to a holding region for lubricating oil circulated to the engine. As a result, an adequate effective extension of the life of the lubricating oil can be achieved, so that maintenance of the engine lubricating oil can be greatly reduced.