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. 27, 2004
Filed:
Apr. 17, 2002
Mitsushi Maeyama, Chiba, JP;
Yoshiyuki Miyagi, Ichikawa, JP;
Shigeru Takabe, Sagamihara, JP;
Masahiro Makita, Fuchu, JP;
Masayoshi Sasaki, Fuchu, JP;
Tatsuya Fujii, Fuchu, JP;
Ishikawajima-Harima Heavy Industries Co., Ltd., Tokyo, JP;
Abstract
A plurality of profile portion divided metal molds surround a profile portion of a supercharger rotor to allow division. A pair of end metal molds and surround both ends of the rotor. A helical core is attached to one end metal mold so as to be helically passed through the profile portion of the rotor. A rotor-shaped cavity is formed inside by the profile portion divided metal molds, and the end metal molds. Hot metal is pressurized, and injected and solidified in the cavity. Then, the end metal mold having the helical core is pulled out by being rotated along a helical line.