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:
May. 13, 2014
Filed:
May. 25, 2011
Robert A. Moss, Simsbury, CT (US);
Jeremy R. Baillargeon, Southington, CT (US);
Joseph Tessitore, Winston-Salem, NC (US);
Robert A. Moss, Simsbury, CT (US);
Jeremy R. Baillargeon, Southington, CT (US);
Joseph Tessitore, Winston-Salem, NC (US);
Veeder-Root Company, Simsbury, CT (US);
Abstract
A pumping apparatus comprises a rotatable shaft coupled to a motor. At least one control structure is mounted on the shaft, and at least one impeller is carried by the shaft. The impeller is adapted to rotate independently of the shaft so as to pump a fluid. The apparatus also comprises a magnetic coupling between the control structure and the impeller. Further, the impeller is adapted to translate axially along the shaft in response to a change in downstream pressure to alter the strength of the magnetic coupling.