Patents by Inventor Edwin S. Harbuck

Edwin S. Harbuck 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).

  • Gas sampling method and dilution tunnel therefor
    Patent number: 5450749
    Abstract: Emission gasses from an engine exhaust pipe are collected through an inlet of a dilution tunnel which is an elongated, hollow tube. The inlet is spaced from the exhaust pipe to also admit surrounding air. Ambient air and emissions are mixed in the tunnel by a screen in the tunnel. A probe in the tunnel diverts a portion of the mixture to gas analyzers. Prior to analysis the mixture may be condensed, filtered or otherwise processed. The analysis determines a CO/CO.sub.2 ratio which is used to determine the air/fuel ratio in the engine based on characteristics of the fuel. The air/fuel mixture of the engine is then adjusted to achieve desired performance.
    Type: Grant
    Filed: March 28, 1994
    Date of Patent: September 19, 1995
    Assignee: WCI Outdoor Products, Inc.
    Inventors: Hans Strom, Roy Ekdahl, Edwin S. Harbuck
  • Gas sampling method and dilution tunnel therefor
    Patent number: 5410907
    Abstract: Emission gasses from an engine exhaust pipe are collected through an inlet of a dilution tunnel which is an elongated, hollow tube. The inlet is spaced from the exhaust pipe to also admit surrounding air. The air and emissions are mixed in the tunnel by a screen in the tunnel. A probe in the tunnel diverts a portion of the mixture to gas analyzers. Prior to analysis the mixture may be condensed, filtered or otherwise processed.
    Type: Grant
    Filed: August 25, 1993
    Date of Patent: May 2, 1995
    Inventors: Hans Strom, Roy Ekdahl, Edwin S. Harbuck