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:
Sep. 20, 1988
Filed:
Apr. 23, 1987
Noboru Nakamura, Kyoto, JP;
Hiroyasu Endo, Nagaokakyo, JP;
Sadakatu Ushio, Otsu, JP;
Tetsuo Ebisudani, Hirakata, JP;
Mitsunori Ito, Uji, JP;
Tokiichi Mizukami, Kyoto, JP;
Mitsuru Kishimoto, Kyoto, JP;
Mitsubishi Jidosha Kogyo Kabushiki Kaishi, Tokyo, JP;
Abstract
A structure of internal combustion engine comprises a cylinder member composed of a cylinder which accomodates a piston connected with a crankshaft, a crankcase provided to accomodate said crankshaft, a rocker case provided to accomodate a valve actuating mechanism, an oil return passage constituting means for leading oil in said rocker case into said crankcase, and a restraining means for restraining an air flow within said crankcase from entering into said oil return passage constituting means. By the effect of the restraining means provided in relation to the oil return passage constituting means, the air flow generated by the rotation of the crankshaft does not work as a dynamic pressure of hingering the flowingdown of oil.