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:
Mar. 11, 2008
Filed:
Aug. 04, 2004
Dale B Andrews, Derry, NH (US);
Dale B Andrews, Derry, NH (US);
Lawrence Pumps, Inc., Lawrence, MN (US);
Abstract
An open face cooling system for a motorized, impeller-type, submersible pump operated in a host fluid ladened with solids, comprising an inlet in the pump housing close to the impeller and away from the axis of the pump into which fluid is forced by pump pressure, the inlet arranged so the impeller vanes sweep its face with a shearing motion that reduces the size of any solids present there until they are small enough to enter the inlet with the fluid flow, the materials ladened fluid flowing hence through a coolant conduit, out of a tangentially configured nozzle into a rotational flow around the inside of an open face toroidal section, and hence inward through an adjoined, inward extending distribution section configured co-axially around and above the motor, to be discharged upon the motor.