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:
Nov. 13, 2012
Filed:
Sep. 28, 2007
Applicants:
Yasuto Kataoka, Kobe, JP;
Naoki Kikuchi, Kobe, JP;
Junichiro Totsuka, Hyogo, JP;
Naoya Fujiwara, Kobe, JP;
Inventors:
Yasuto Kataoka, Kobe, JP;
Naoki Kikuchi, Kobe, JP;
Junichiro Totsuka, Hyogo, JP;
Naoya Fujiwara, Kobe, JP;
Assignee:
Kabushiki Kaisha Kobe Seiko Sho, Hyogo, JP;
Primary Examiner:
Int. Cl.
CPC ...
F01C 1/08 (2006.01); F01C 1/107 (2006.01); F04C 18/16 (2006.01); F04C 2/107 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention is to provide a screw rotor including a resin rotor formed around a metallic shaft without generation of cracks. Spiral chamfers are formed on surfaces of metallic shafts around which resin rotors are formed. Preferably the surfaces of the shafts may be sandblasted, and after the surfaces of the shafts are preliminarily coated with resin and then the rotors may be molded.