Patents by Inventor James L. Buchanan

James L. Buchanan 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).

  • Apparatus for oil filtration and recirculation
    Patent number: 5057658
    Abstract: An apparatus for filtering and recirculating oil used in a vacuum pump is disclosed. The filtration device comprises first and second valves permitting, respectively, addition and deletion of oil from the system. A plurality of filter elements are provided to remove particulate contamination from the oil. In a preferred embodiment, the vacuum pump is situated in an enclosure which retains therein the latent heat produced by the vacuum pump. Alternatively, an oil heater may be provided. The oil is preferably maintained at a temperature of greater than about 40.degree. C., so that the particulates entrained therein remain in a sludge.
    Type: Grant
    Filed: February 27, 1989
    Date of Patent: October 15, 1991
    Assignee: Micron Technology, Inc.
    Inventors: Daniel A. Cano, James L. Buchanan
  • Counter
    Patent number: D262505
    Type: Grant
    Filed: February 15, 1979
    Date of Patent: January 5, 1982
    Inventors: James L. Buchanan, Lloyd A. Dye
  • Hand-powered nail driver
    Patent number: D314127
    Type: Grant
    Filed: January 19, 1990
    Date of Patent: January 29, 1991
    Inventors: Fred W. Williamson, James L. Buchanan