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. 20, 2022
Filed:
Jun. 09, 2020
Yamaichi Electronics Co., Ltd., Tokyo, JP;
Yamaichi Electronics, Co. Ltd., Tokyo, JP;
Abstract
The cylindrical member includes a cylindrical base materialmade of beryllium copper, a first coating layer that is formed on the base materialand made of a Ni-based material and serves as a reinforcing material for the base material, and a second coating layerthat is formed on the first coating layers and made of a metal-based material different from the base material, wherein the first coating layerhas higher hardness than the base material, when the thickness of the base materialis represented by Tand the layer thickness of the first coating layerformed on the outer surface is represented by T1, the base materialis formed so as to satisfy 13 μm≤T≤25 μm, and the first coating layeris formed so as to satisfy T1≥T×4%.