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:
Nov. 28, 2023
Filed:
Mar. 29, 2019
Nissan Motor Co., Ltd., Yokohama, JP;
Koukichi Kamada, Kanagawa, JP;
Hirohisa Shibayama, Kanagawa, JP;
Naoya Tainaka, Kanagawa, JP;
Yoshito Utsumi, Kanagawa, JP;
Hidenobu Matsuyama, Kanagawa, JP;
Eiji Shiotani, Kanagawa, JP;
Toshio Ogiya, Kanagawa, JP;
Haruhiko Suzuki, Kanagawa, JP;
Nissan Motor Co., Ltd., Yokohama, JP;
Abstract
A film forming method forms a coating film on a workpiece (e.g., a cylinder head) having a film-deposited portion (e.g., an annular valve seat part) by moving a nozzle of a cold spray device relative to the workpiece along a film formation trajectory having a film formation starting point and a film formation finishing point in which the film-deposited portion overlaps to form an overlapping portion. The coating film is formed by causing a raw material powder to collide in a solid-phase state with the workpiece and plastically deform. Also, the coating film on the film-deposited portion is further formed such that an inclination angle of an end part of the coating film relative to a surface of the film-deposited portion is 45° or less at the film formation starting point of the overlapping portion.