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:
Jul. 01, 1997
Filed:
Aug. 26, 1996
Applicant:
Inventors:
Eisuke Kato, Oobu, JP;
Takashi Nagai, Oobu, JP;
Assignee:
Aisan Kogyo Kabushiki Kaisha, Aichi, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F04D / ;
U.S. Cl.
CPC ...
415 551 ;
Abstract
A regenerative pump having a plurality of concave channels and blades provided along a peripheral edge of an impeller in a substantially radial direction. A forward surface of the blades in the direction of the impeller is formed concave and a forward surface of the blade in a radially outer portion of the impeller is positioned in a rear position in the direction of rotation relative to the forward surface of the blade in a radially inner portion of the blade.