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:
Jun. 23, 2020
Filed:
Jun. 10, 2016
Ihi Corporation, Tokyo, JP;
Ihi Power Systems Co., Ltd., Tokyo, JP;
Yoshiyuki Saito, Tokyo, JP;
Takeshi Yamada, Tokyo, JP;
Yoshiyuki Umemoto, Tokyo, JP;
Nobuaki Kato, Nagoya, JP;
Hiroaki Mizuno, Ichinomiya, JP;
IHI CORPORATION, , JP;
IHI POWER SYSTEMS CO., LTD., , JP;
Abstract
A piston ring is provided with a thermal spray coating that contains tungsten carbide and chrome carbide as a hard phase, and contains nickel as a metallic binder phase, and is characterized in that the thermal spray coating is formed by the spraying of a thermal spray powder that has been produced by means of a granulation sintering method, and that contains hard particles in which the mean particle diameter of the tungsten carbide has been adjusted by means of a BET method to fall within a range of not less than 0.15 μm and not more than 0.45 μm.