Patents by Inventor Mark B. Sutherland

Mark B. Sutherland 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).

  • Acoustical absorber array
    Patent number: 6053275
    Abstract: A plurality of acoustical absorption elements are mounted in a two-dimensional spaced array on an acoustically reflective surface of an machinery enclosure, in such a manner as to expose portions of the reflective surface between neighboring elements. The elements are preferably of a substantially standard size and shape in order to enhance production and inventory efficiency, although materials of various thickness may be provided to accommodate tuning for specific frequencies to be absorbed.
    Type: Grant
    Filed: September 22, 1998
    Date of Patent: April 25, 2000
    Assignee: Caterpillar Inc.
    Inventors: John T. Leonetti, Mark B. Sutherland, Emile E. Damotte
  • Outdoor noise testing system
    Patent number: 6041657
    Abstract: Apparatus for automatically determining the total sound power emitted by a work machine. The noise testing system employs a processor and remote control to control the measurement of both exterior and interior sound generated by a work machine in either a dynamic or static operating mode.
    Type: Grant
    Filed: December 23, 1997
    Date of Patent: March 28, 2000
    Assignee: Caterpillar, Inc.
    Inventor: Mark B. Sutherland