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:
Oct. 24, 1995
Filed:
Oct. 07, 1993
Applicant:
Inventors:
Akira Matsui, Ibaragi, JP;
Takayuki Kishi, Miura, JP;
Toshio Nishio, Ibaragi, JP;
Keisuke Kasahara, Toyko, JP;
Assignee:
Mayekawa Mfg. Co., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F01C / ;
U.S. Cl.
CPC ...
4182013 ; 418150 ;
Abstract
A screw rotor for fluid handling devices configured to reduce the area of blowholes virtually without relationship to the length of the sealing line by selecting specific profile shapes of the addendum of the female rotor and the dedendum on male rotor. Further, the screw rotor configuration eliminates semi-occluded pockets forming between the addendum of the female rotor and the dedendum of the male rotor.