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:
Aug. 01, 2000
Filed:
Sep. 08, 1997
Applicant:
Inventor:
Bruce A Maki, Hugo, MN (US);
Assignee:
Hypro Corporation, St. Paul, MN (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F04C / ;
U.S. Cl.
CPC ...
418 45 ;
Abstract
A fluid handling pump for precise metering applications includes a flexible impeller mounted on a shaft that is eccentric to the centerline of a cylindrical chamber of the pump's housing. The impeller includes a plurality of flexible walls, that cooperate with an integrally molded hub and a rim like spokes, to define a plurality of compressible chambers. During rotation of the impeller, the volume of the compressible impeller chambers varies from a maximum in passing the pump's suction port to a minimum when sweeping past the pump's discharge port. In this way, a peristaltic pumping action takes place.