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:
May. 16, 2000
Filed:
Mar. 25, 1998
Applicant:
Inventor:
Yasuo Ozawa, Kariya, JP;
Assignee:
Aisin Seiki Kabushiki Kaisha, Aichi-Pref., JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F04D / ;
U.S. Cl.
CPC ...
4151731 ; 4151701 ; 4151682 ; 415230 ;
Abstract
A liquid pump includes a body, a stationary member which is fluid-tightly fixed to the body through a seal plate, a shaft which is rotatably supported on the body and an impeller which is disposed in a vortex chamber formed in the body and having a disk portion fixed to the one end of the shaft and plural blades formed on a side face of the disk portion directed toward the body so as to project toward the body and to extend radially, wherein an extending portion is formed on the seal plate so that a predetermined axial clearance is maintained between the extending portion and end surfaces of the blades directed toward the body.