Patents by Inventor Tom Chamberlain

Tom Chamberlain 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).

  • Progressive cavity pump/motor stator, and apparatus and method to manufacture same by electrochemical machining
    Publication number: 20070140883
    Abstract: Electrochemical machining is used to generate the helical lobe profiles of the stator of a progressive cavity pump or motor. A thin, elastomeric liner, of uniform thickness is bonded either to the interior of the stator, or to the exterior of the rotor. Where the elastomeric liner is to be bonded to the interior of the stator, bonding is improved by electrically etching the interior of the stator during the electrochemical machining process to produce a roughened surface.
    Type: Application
    Filed: February 9, 2007
    Publication date: June 21, 2007
    Inventors: Terry Lievestro, John Reynolds, Tom Chamberlain
  • Progressive cavity pump/motor stator, and apparatus and method to manufacture same by electrochemical machining
    Patent number: 7192260
    Abstract: Electrochemical machining is used to generate the helical lobe profiles of the stator of a progressive cavity pump or motor. A thin, elastomeric liner, of uniform thickness is bonded either to the interior of the stator, or to the exterior of the rotor. Where the elastomeric liner is to be bonded to the interior of the stator, bonding is improved by electrically etching the interior of the stator during the electrochemical machining process to produce a roughened surface.
    Type: Grant
    Filed: July 8, 2004
    Date of Patent: March 20, 2007
    Assignee: Lehr Precision, Inc.
    Inventors: Terry Lievestro, John Reynolds, Tom Chamberlain
  • Progressive cavity pump/motor stator, and apparatus and method to manufacture same by electrochemical machining
    Publication number: 20050079083
    Abstract: Electrochemical machining is used to generate the helical lobe profiles of the stator of a progressive cavity pump or motor. A thin, elastomeric liner, of uniform thickness is bonded either to the interior of the stator, or to the exterior of the rotor. Where the elastomeric liner is to be bonded to the interior of the stator, bonding is improved by electrically etching the interior of the stator during the electrochemical machining process to produce a roughened surface.
    Type: Application
    Filed: July 8, 2004
    Publication date: April 14, 2005
    Inventors: Terry Lievestro, John Reynolds, Tom Chamberlain