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:
Jul. 05, 2005
Filed:
Feb. 19, 2002
Hirohiko Tanaka, Aichi, JP;
Suguru Hirota, Aichi, JP;
Atsushi Shibata, Aichi, JP;
Takeshi Kondo, Aichi, JP;
Mitsuru Hattori, Aichi, JP;
Eiji Tokunaga, Aichi, JP;
Tetsuhiko Fukanuma, Aichi, JP;
Masakazu Hashimoto, Aichi, JP;
Hiromi Yoshino, Aichi, JP;
Hirohiko Tanaka, Aichi, JP;
Suguru Hirota, Aichi, JP;
Atsushi Shibata, Aichi, JP;
Takeshi Kondo, Aichi, JP;
Mitsuru Hattori, Aichi, JP;
Eiji Tokunaga, Aichi, JP;
Tetsuhiko Fukanuma, Aichi, JP;
Masakazu Hashimoto, Aichi, JP;
Hiromi Yoshino, Aichi, JP;
Kabushiki Kaisha Toyota Jidoshokki, Aichi-ken, JP;
Abstract
In a manufacturing method of a valve plate for a compressor according to this invention, a punch dieformed with a convex and concave configuration at its tip end faceis set at a press machineand the punch dieis depressed against a surface of a valve plateto transfer the convex and concave configuration of the tip end faceThus, peripheral portions of a suction port and a discharge port of the valve plateare roughened.