Patents by Inventor Chris Mihm

Chris Mihm has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Positive displacement rotary pumps with improved cooling
    Patent number: 8821141
    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.
    Type: Grant
    Filed: June 23, 2011
    Date of Patent: September 2, 2014
    Assignee: Wright Flow Technologies Limited
    Inventors: Bruce Helgeson, Joe Thompson, Jim Mayer, Chris Mihm, Keith Feeley, Juan Jose Mejia
  • Positive Displacement Rotary Pumps with Improved Cooling
    Publication number: 20120328462
    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.
    Type: Application
    Filed: June 23, 2011
    Publication date: December 27, 2012
    Applicant: Wright Flow Technologies Limited
    Inventors: Bruce Helgeson, Joe Thompson, Jim Mayer, Chris Mihm, Keith Feeley, Juan Jose Mejia