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. 11, 2004
Filed:
Mar. 11, 2003
Satoshi Miura, Aichi-ken, JP;
Masaki Ikeya, Aichi-ken, JP;
Aisan Kogyo Kabushiki Kaisha, Obu, JP;
Abstract
An impeller pump has a pump casing ( ) that defines a pump chamber. The pump chamber includes a first chamber ( ) and a second chamber ( ). An impeller ( ) is rotatably disposed within the pump chamber. The impeller has a first groove group and a second groove group on opposite surfaces. The first groove group and the second groove group oppose to the first chamber and the second chamber, respectively, so that a fluid is draw into and discharged from the first and second chambers as the impeller rotates. The flows of the fluid discharged from the first and second chambers are converged at a converging channel ( ). Pulsations of the fluid discharged from the fist and second chambers are canceled each other when the flows converge at the converging channel.