Patents by Inventor W. Charles Sahm

W. Charles Sahm 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).

  • Noise suppression enclosure for an engine
    Patent number: 5467747
    Abstract: Most existing noise reduction enclosures used with engines and engine driven equipment have failed to meet the reduced noise emission requirements of today and of the future. A few of the present enclosures meet the reduced noise emission requirements of today and of the future but are extremely expensive to purchase and are large bulky structures. The subject enclosure (10) is reasonably priced and provides an enclosure which is effective in reducing the noise emitted therefrom. The enclosure (10) includes a housing (32) having a generally rectangular configuration and being divided into an engine portion (56) defining an engine compartment (57) and a duct portion (54). The outlet ducts (88) having a length greater than the inlet ducts (84). To further enhance the noise reduction of the enclosure (10) a plurality of dynastic hardware is attached to the housing (32).
    Type: Grant
    Filed: January 10, 1994
    Date of Patent: November 21, 1995
    Assignee: Caterpillar Inc.
    Inventors: Everett G. Brandt, M. Kathryn Christensen, W. Charles Sahm
  • Method and apparatus for determining the location and orientation of a work machine
    Patent number: 5438771
    Abstract: An apparatus is provided for determining the location of a digging implement at a work site. The apparatus includes an undercarriage, a car body rotatably connected to the undercarriage, a receiver connected to the car body, a positioning system for determining the location of the receiver in three dimensional space, the positioning system determining the location of the receiver at a plurality of points along an arc, and a processor for determining the location and orientation of the car body in response to the location of the plurality of points.
    Type: Grant
    Filed: May 10, 1994
    Date of Patent: August 8, 1995
    Assignee: Caterpillar Inc.
    Inventors: W. Charles Sahm, Adam J. Gudat, Daniel E. Henderson
  • Noise suppression enclosure for an engine
    Patent number: 5297517
    Abstract: Most existing noise reduction enclosures used with engines and engine driven equipment have failed to meet the reduced noise emission requirements of today and of the future. A few of the present enclosures meet the reduced noise emission requirements of today and of the future but are extremely expensive to purchase and are large bulky structures. The subject enclosure (10) is reasonably priced and provides an enclosure which is effective in reducing the noise emitted therefrom. The enclosure (10) includes a housing (32) having a generally rectangular configuration and being divided into an engine portion (56) defining an engine compartment (57) and a duct portion (54). The outlet ducts (88) having a length greater than the inlet ducts (84). To further enhance the noise reduction of the enclosure (10) a plurality of dynastic hardware is attached to the housing (32).
    Type: Grant
    Filed: August 19, 1991
    Date of Patent: March 29, 1994
    Assignee: Caterpillar Inc.
    Inventors: Everett G. Brandt, M. Kathryn Christensen, W. Charles Sahm