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. 13, 1991
Filed:
Apr. 06, 1990
Shuji Tanaka, Yokohama, JP;
Toshihiro Hirai, Yokohama, JP;
Nissan Motor Co., Ltd., Yokohama, JP;
Abstract
An oil pan for an internal combustion engine having an engine lubrication system. The oil pan comprises a shallow bottom section and a sump section. An oil return path is formed at a side of the bottom surface of the shallow bottom section to which a major part of lubrication oil in the shallow bottom section is guided under the force caused by the rotation of the crankshaft. The oil return path is formed by the generally tube-shaped members. The oil return path has an inlet opened opposite to the crankshaft and an outlet opened opposite to the bottom of the sump section. Therefore, the lubrication oil in the shallow bottom section is effectively guided to the inlet of the oil return path and returned into the sump section under the force caused by the rotation of the crankshaft or the like.