Patents by Inventor James Keith Martin

James Keith Martin 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).

  • Fluid film bearings
    Patent number: 5772334
    Abstract: A hydrodynamic fluid film bearing in which a plurality of circumferentially spaced bearing elements are provided, defining areas of support for the rotating part of the bearing. At least some of the bearing elements are adjustable during operation to vary lubrication conditions in the fluid film. The bearing elements are of sufficiently high stiffness that the position of the entire bearing surface of each element is essentially independent of the pressure in the fluid film encountered during operation.The bearing allows complete control of the lubrication conditions and can be adjusted for optimum performance over a wide range of speed and load.
    Type: Grant
    Filed: October 25, 1996
    Date of Patent: June 30, 1998
    Assignee: British Technology Group Limited
    Inventors: David Walter Parkins, James Keith Martin