Patents by Inventor Jim MacPhail

Jim MacPhail 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).

  • Roller stabilizer
    Patent number: 6109374
    Abstract: An improved stabilizing tool includes a body with a pocket, and a roller rotatably disposed in the pocket. The body includes a fluid passageway formed axially therethrough. The passageway has a first zone wherein the pressure of the fluid is relatively high and a second zone wherein the pressure is relatively low. A first conduit provides fluid communication between the first zone and an interior of the roller for the ingress of fluid to the interior, and a second conduit provides fluid communication between the interior of the roller and the second zone for the egress of the fluid back to the fluid passageway.
    Type: Grant
    Filed: April 9, 1998
    Date of Patent: August 29, 2000
    Assignee: Orbital Machinig and Manufacturing Ltd.
    Inventors: Constantin Burca, Hugh Gardner, Jim MacPhail, John MacPhail, Constantin Sarbu