Patents by Inventor Reese Jadwin

Reese Jadwin 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).

  • Electronic stator measurement device
    Patent number: 4653318
    Abstract: A device for measuring the cross section of the stator of a downhole motor having a carrier shaped to travel through the helicoidal interior of the stator and a sensor including first and second bending beam-strain gage structures for generating electrical signals indicative of the cross section of the stator.
    Type: Grant
    Filed: September 10, 1985
    Date of Patent: March 31, 1987
    Assignee: Smith International, Inc.
    Inventors: Reese Jadwin, Roger P. Herbert, Franklin L. Schulte, Sheldon Rubin
  • Ball actuable circulating dump valve
    Patent number: 4574894
    Abstract: A dump valve for use in a downhole motor having a spring-based piston responsive to fluid flow to close a fluid flow port and to a ball actuated force to reopen the port.
    Type: Grant
    Filed: July 12, 1985
    Date of Patent: March 11, 1986
    Assignee: Smith International, Inc.
    Inventor: Reese Jadwin