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:
Sep. 02, 2014
Filed:
Jun. 23, 2011
Bruce Helgeson, Dysart, IA (US);
Joe Thompson, Cedar Falls, IA (US);
Jim Mayer, Cedar Falls, IA (US);
Chris Mihm, Cedar Falls, IA (US);
Keith Feeley, St Leonards on Sea, GB;
Juan Jose Mejia, Munich, GB;
Bruce Helgeson, Dysart, IA (US);
Joe Thompson, Cedar Falls, IA (US);
Jim Mayer, Cedar Falls, IA (US);
Chris Mihm, Cedar Falls, IA (US);
Keith Feeley, St Leonards on Sea, GB;
Juan Jose Mejia, Munich, GB;
Wright Flow Technologies Limited, Eastbourne, GB;
Abstract
Various rotary pumps are disclosed that are designed to pump viscous fluids or slurries. Often, the seals of such pumps can become over heated. The disclosed pumps include slots disposed in the rotors and/or slots disposed in the openings through which the drive and driven shafts task so that some of the fluid being pumped through the pumping chamber can migrate through the proximal wall of the pump casing to the seal assemblies disposed on the other side of the proximal wall of the pump casing. Thus, the seal assemblies of the pumps are cooled without resorting to the use of a cooling jacket or other cooling mechanism.