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:
Dec. 18, 2012
Filed:
Mar. 05, 2010
Andrew Magnus Ekberg, Superior, CO (US);
Paul Roland Beauregard, Jr., Lafayette, CO (US);
Kerry E. Kramlich, Littleton, CO (US);
Scott Marvin Allen, Evergreen, CO (US);
David M. Carr, Superior, CO (US);
Ray L. Hauser, Boulder, CO (US);
Andrew Magnus Ekberg, Superior, CO (US);
Paul Roland Beauregard, Jr., Lafayette, CO (US);
Kerry E. Kramlich, Littleton, CO (US);
Scott Marvin Allen, Evergreen, CO (US);
David M. Carr, Superior, CO (US);
Ray L. Hauser, Boulder, CO (US);
Sundyne Corporation, Arvada, CO (US);
Abstract
An inner drive for a magnetic drive pump includes a magnet supported on a yoke. The inner drive is driven about an axis to pump a corrosive process fluid. The magnet and yoke are fully encapsulated during the molding process to completely surround the magnet and yoke in a protective plastic shell. A sleeve is arranged radially outwardly of the magnet to provide further protection. Backing rings are arranged on either side of the magnet. A bonding material joins the plastic shell to the backing rings and sleeve to prevent a space from forming beneath the plastic shell that would become filled with the process fluid once it has permeated the plastic shell. A protective coating is arranged on at least a portion of the magnet to further insulate the magnet from the process fluid.