Patents by Inventor Michael F. Lester

Michael F. Lester 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).

  • Methods of an apparatus for monitoring mechanical equipment's operational condition
    Patent number: 4651560
    Abstract: Samples of lubrication fluid are taken at relatively long sampling periods. Upon the derived rate of change of the amount of an inspected constituent differing by more than an acceptable value the lubrication fluid is changed and two further samples are taken over a relatively short sampling period. The rate of change in the amount of inspected constituent and the relatively short sampling period gives an indication of the operational condition of the mechanical equipment.
    Type: Grant
    Filed: February 19, 1986
    Date of Patent: March 24, 1987
    Assignee: National Coal Board
    Inventors: Michael F. Lester, Alan Brooks