Patents by Inventor Michael P. Olsen

Michael P. Olsen 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).

  • Solid state relay
    Patent number: 6291909
    Abstract: A semiconductor based relay is provided for selectively coupling differing periodic power sources to loads through semiconductor switches provided therein while selectively using such power sources to also contribute to the operation of the relay circuitry, each in a different manner, in conjunction with selection signals.
    Type: Grant
    Filed: November 23, 1999
    Date of Patent: September 18, 2001
    Assignee: HLO, L.L.P.
    Inventor: Michael P. Olsen
  • DC solid state relay
    Patent number: 6091166
    Abstract: A semiconductor based relay is provided for selectively coupling differing periodic power sources to loads through semiconductor switches provided therein while selectively using the alternating polarity to constant polarity voltage converter outputs as switched in a separate circuit to also contribute to the operation of the relay circuitry in conjunction with selection signals.
    Type: Grant
    Filed: June 22, 1999
    Date of Patent: July 18, 2000
    Assignee: HLO, L.L.P.
    Inventors: Michael P. Olsen, Larry P. Grovum
  • Loudspeaker enclosure
    Patent number: 4924964
    Abstract: An enclosure for a bass loudspeaker for housing in a larger multiple loudspeaker enclosure having a pair of concentric cylindrical shells filled with dense particulate matter.
    Type: Grant
    Filed: July 24, 1989
    Date of Patent: May 15, 1990
    Inventor: Michael P. Olsen