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. 31, 2019
Filed:
Mar. 31, 2016
Nippon Piston Ring Co., Ltd, Saitama-shi, Saitama, JP;
Yasuyuki Murata, Saitama, JP;
Kenji Arai, Saitama, JP;
Ryosuke Kamata, Saitama, JP;
Hideshi Hitosugi, Saitama, JP;
Kazumoto Takahashi, Saitama, JP;
Toru Tsukui, Saitama, JP;
NIPPON PISTON RING CO., LTD., Saitama, JP;
Abstract
A combined oil ring in which carbon sludge and the like are not deposited between side rails and a spacer expander even if an internal combustion engine is operated for a long period of time. The combined oil ring includes an outer circumferential end portion of a space forming part and a continuous part that are closed and not open toward the outer circumferential side, thereby reducing carbon sludge deposits.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile