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. 19, 1989
Filed:
Nov. 15, 1988
Minobu Sukimoto, Osaka, JP;
Katsumi Yamazaki, Osaka, JP;
Naohisa Hirunuma, Osaka, JP;
Seijiro Taguchi, Osaka, JP;
Tadashi Usui, Osaka, JP;
Yasushi Akiyoshi, Osaka, JP;
Toyoichiro Nogami, Osaka, JP;
Toyoji Kaneko, Osaka, JP;
Showa Aluminum Corporation, Osaka, JP;
Abstract
A process for producing an intake manifold having a main pipe made of wrought aluminum material and having an open end, a closed end opposite to the open end, a plurality of holes formed in its peripheral wall and outward tubular projections integral with the peripheral wall and each formed around each of the holes, and a plurality of branch pipes made of wrought aluminum material and each having one end fitting in and joined to each of the tubular projections. The manifold is smooth-surfaced in its interior, diminished in resistance to air and improved in air intake efficiency. The manifold requires no finishing procedure unlike those prepared by casting.