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:
Feb. 25, 2020
Filed:
Jul. 24, 2017
Applicant:
Tpr Co., Ltd., Tokyo, JP;
Inventors:
Kentaro Kawano, Tokyo, JP;
Seiji Tamaki, Tokyo, JP;
Assignee:
TPR CO., LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16J 9/20 (2006.01); F16J 9/06 (2006.01); F16J 9/26 (2006.01);
U.S. Cl.
CPC ...
F16J 9/20 (2013.01); F16J 9/068 (2013.01); F16J 9/26 (2013.01);
Abstract
Provided is an oil ring. A shape of an outer peripheral surface of an upper segment arranged on an engine combustion chamber side has a symmetrical curved shape. A shape of an outer peripheral surface of a lower segment arranged on a side away from the engine combustion chamber is a symmetrical curved shape.