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:
Mar. 26, 2013
Filed:
Mar. 26, 2008
Yasuhiro Murakami, Sakai, JP;
Mikio Kajiwara, Sakai, JP;
Mitsuhiko Kishikawa, Sakai, JP;
Hiroyuki Yamaji, Sakai, JP;
Mie Arai, Sakai, JP;
Satoshi Yamamoto, Sakai, JP;
Yasuhiro Murakami, Sakai, JP;
Mikio Kajiwara, Sakai, JP;
Mitsuhiko Kishikawa, Sakai, JP;
Hiroyuki Yamaji, Sakai, JP;
Mie Arai, Sakai, JP;
Satoshi Yamamoto, Sakai, JP;
Daikin Industries, Ltd., Osaka, JP;
Abstract
A method of manufacturing a scroll member includes a casting step and a cutting step. In the casting step an iron casting having a spiraling part is formed. In the cutting step, the iron casting obtained in the casting step is cut to obtain a final shape of the scroll member. Preferably the iron casting obtained in the casting step has a fixing part with the spiraling part extending from one side and a protruding part extending from an opposite side. A specified portion of the spiraling part, a central portion of the fixing part and/or the protruding part has a larger dimension before the cutting step is performed than after the cutting step is performed.