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:
Jan. 09, 2018
Filed:
Feb. 23, 2015
Eagle Industry Co., Ltd., Tokyo, JP;
Takeshi Hosoe, Tokyo, JP;
Shinji Nishida, Tokyo, JP;
Koichi Mori, Tokyo, JP;
Yuta Negishi, Tokyo, JP;
Hideki Kawai, Tokyo, JP;
Masatoshi Itadani, Tokyo, JP;
EAGLE INDUSTRY CO., LTD., , JP;
Abstract
The present disclosure provides a processing method for preparing at least one sliding part of a pair of sliding parts, and includes a processing step of forming a shallow groove within a range of depth from 0.05 μm to 5 μm on a sealing face of the sliding part by irradiating an ultrashort pulse laser to a part of the sealing face where a positive pressure generation groove and a negative pressure generation groove are formed and removing part of a surface of the sealing face, wherein an energy fluence of the ultrashort pulse laser used in the processing step is 0.5 J/(cm·pulse) to 7 J/(cm·pulse).