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:
Apr. 28, 1992
Filed:
Aug. 15, 1991
Applicant:
Inventors:
Tetsuo Fukazawa, Tokyo, JP;
Makoto Toyohara, Hamamatsu, JP;
Assignees:
Pacific Machinery & Engineering Co., Ltd., Tokyo, JP;
Sanshin Industries Co., Ltd., Shizuoka, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F04D / ; F04D / ;
U.S. Cl.
CPC ...
4151821 ; 415183 ; 416188 ; 4162 / ;
Abstract
A turbo pump is provided with an impeller having a volute casing for a diffuser type casing. The configuration of a meridian section of the impeller shroud at the side of a boss is made as a concave arch-like surface of revolution. The shroud at the side of the blade inlet is cylindrical and substantially parallel to the shaft about which the impeller turns. Each of the blades of the impeller is so shaped that the edge of the blade inlet projects toward the impeller eye and is smoothly connected to the surface of the shroud. The inlet angle of the blade is as small as possible.