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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.:

US 10544788 B1

PDFFull Text
Date of Patent:
Jan. 28, 2020

Filed:

May. 20, 2015

Dual integrated pump having a first and second pump portion connected in series and driven by a common shaft

Applicant:

Circor Pumps North America, Llc, Monroe, NC (US);

Inventors:

Patrick Wilson Duncan, Marchville, NC (US);

Philip Taylor Alexander, Matthews, NC (US);

Charles Hinckley, Hardwick, MA (US);

Assignee:

CIRCOR PUMPS NORTH AMERICA, LLC, Monroe, NC (US);

Attorney:
Primary Examiner:

Bryan M Lettman

Assistant Examiner:

Timothy P Solak

Int. Cl.
CPC ...
F04D 13/12 (2006.01); F04C 2/10 (2006.01); F04C 11/00 (2006.01); F04C 15/06 (2006.01); F04D 13/02 (2006.01); F04D 29/58 (2006.01); F04D 1/00 (2006.01); F04D 15/00 (2006.01); F04D 29/00 (2006.01); F04D 29/043 (2006.01); F04C 14/02 (2006.01); F04C 29/12 (2006.01); F04C 14/08 (2006.01); F04C 15/00 (2006.01); F04C 29/00 (2006.01);
U.S. Cl.
CPC ...
F04D 13/12 (2013.01); F04C 2/101 (2013.01); F04C 11/006 (2013.01); F04C 14/02 (2013.01); F04C 14/08 (2013.01); F04C 15/0069 (2013.01); F04C 15/062 (2013.01); F04C 29/0064 (2013.01); F04C 29/122 (2013.01); F04D 1/00 (2013.01); F04D 13/024 (2013.01); F04D 15/0066 (2013.01); F04D 29/007 (2013.01); F04D 29/043 (2013.01); F04D 29/586 (2013.01); F04D 29/5806 (2013.01); F04C 2240/603 (2013.01);
Abstract

A pump includes a housing, a drive shaft, a centrifugal pump portion having an impeller, and a gear pump portion having first and second gears. The impeller and one of the first and second gears are mounted to the drive shaft to drive the centrifugal pump portion and the gear pump portion at the same rotational speed. The gear pump can be a crescent internal gear (CIG) pump. The drive shaft can be rotated by a magnetic drive. The drive shaft can include a longitudinal bore in fluid communication with a cavity in the magnetic drive and with a discharge of the centrifugal pump portion to circulate working fluid through the magnetic drive to cool the drive. An impeller can be coupled to an inlet of the centrifugal pump portion.

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