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. 16, 1979
Filed:
Nov. 10, 1976
Masayoshi Mukasa, Shizuoka, JP;
Shigeaki Fujimaki, Numazu, JP;
Usui International Industry, Ltd., Shizuoka, JP;
Abstract
A high pressure fuel injection pipe is produced by squeezing an end portion of a small-diametered steel pipe member having a flow path extending through the center thereof to form a flow path of reduced diameter in the end portion communicating with the central flow path, pressing and plastically shaping the end portion into a frusto-conical or arcuate-surfaced connecting head, and grinding minute curve concavo-convex faces created in the inner surface of the flow path of reduced diameter during the plastic shaping to thereby form a flow path equal in diameter and communicating with the flow path in the small-diametered steel pipe member.