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:
May. 30, 2017
Filed:
Jan. 15, 2016
Usui Kokusai Sangyo Kaisha Ltd., Shimizu-cho, Sunto-gun, Shizuoka, JP;
Iichiro Seino, Shimizu-cho, JP;
Eiji Kurata, Shimizu-cho, JP;
Abstract
Provided is a terminal structure of a high-pressure fuel pipe for a direct injection engine which can prevent stress concentration to a brazed portion between a pipe and a connection part effectively. In the terminal structure of a high-pressure fuel pipe for a direct injection engine where a connection head is brazed to an end of a fuel pipe, the end of the fuel pipe continued to a fuel pipe insertion portion of the connection head is provided with a drawn portion, an outer diameter Dof the drawn portion to a fuel pipe diameter D satisfies 0.8D≦D≦0.9D, and a length Lof the drawn portion having the outer diameter Din a pipe-axial direction from an end of the fuel pipe insertion portion satisfies L≧0.06D.