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:
Apr. 07, 2015
Filed:
Nov. 03, 2011
Applicants:
Scott R. Wait, Arvada, CO (US);
John E. Sidelko, Arvada, CO (US);
Inventors:
Scott R. Wait, Arvada, CO (US);
John E. Sidelko, Arvada, CO (US);
Assignee:
Sundyne, LLC, Arvada, CO (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F03B 3/12 (2006.01); F04D 29/22 (2006.01); F04D 29/24 (2006.01); F04D 29/66 (2006.01);
U.S. Cl.
CPC ...
F04D 29/2277 (2013.01); F04D 29/242 (2013.01); F04D 29/669 (2013.01);
Abstract
An impeller for a centrifugal pump includes a radially inner hub, and a plurality of blades extending straight and along a direction that is perpendicular to a rotational axis of the impeller. The blades extend from a radially outer end to a radially inner end, and define a generally frusto-conical envelope. A flow control feature is formed between the radially inner end of the blades and the hub. The flow control feature has a curved upper surface.