Patents by Inventor Steven E Buell

Steven E Buell 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).

  • Centrifugal pump with improved drive shaft and heat exchanger
    Patent number: 8152458
    Abstract: A high temperature centrifugal pump includes non-linear fluid flow paths between the pump housing and seal housing to reduce fluid flow therebetween. In another aspect, the invention provides a drive shaft of variable diameter to compensate for different amounts of thermal expansion to maintain a more consistent gap profile between the drive shaft and thermal insulators or other components positioned around the drive shaft. In yet another aspect, a tube heat exchanger may be placed in fluid communication with the seal housing to re-circulate and cool the fluid therethrough.
    Type: Grant
    Filed: April 28, 2009
    Date of Patent: April 10, 2012
    Assignee: MP Pumps, Inc.
    Inventors: Steven E Buell, David M DeClerck