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:
Mar. 05, 2019
Filed:
Sep. 04, 2015
Nissan Motor Co., Ltd., Yokohama-shi, Kanagawa, JP;
Daisuke Watanabe, Kanagawa, JP;
Shigeru Nakajima, Kanagawa, JP;
Kazuto Waki, Kanagawa, JP;
Yoshihiro Kobayashi, Kanagawa, JP;
NISSAN MOTOR CO., LTD., Yokohama-shi, JP;
Abstract
A lubrication structure of the present invention is applied to a multi-link piston crank mechanism that has a upper link (), a lower link () and a control link (). Lubricating oil is supplied in an oil storing portion () formed between a pair of upper-pin pin boss portions () by a plate member () through an oil supply hole (). By oscillating rotary motion of the upper link side pin boss portion () that is provided with an oil groove () on an end surface of the upper link side pin boss portion (), the lubricating oil in the oil storing portion () is supplied to an upper pin ().