Patents by Inventor Robin G. Thomas

Robin G. Thomas 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).

  • Compact tuned exhaust system for aircraft with reciprocating engines
    Patent number: 6581376
    Abstract: A tuned exhaust system for a multi-cylinder, reciprocating, internal combustion engine is disclosed. Each exhaust tube has approximately the same overall length resulting in a predetermined resonant frequency. The overall length includes the sum of the header tube length and the internal length of the collector assembly portions of the exhaust channels in the heat exchanger box. Calculating the correct length and bending the pipes to fit in the space available resulted in increased horsepower, reduced fuel consumption, cooler cylinder head temperatures, reduced noise and vibration for four-cylinder and six-cylinder aircraft engines.
    Type: Grant
    Filed: April 17, 2002
    Date of Patent: June 24, 2003
    Inventor: Robin G. Thomas
  • Compact tuned exhaust system for aircraft with reciprocating engines
    Patent number: 6374599
    Abstract: A tuned exhaust system for a multi-cylinder, reciprocating, internal combustion engine is disclosed. Each exhaust tube has approximately the same overall length resulting in a predetermined resonant frequency. The overall length includes the sum of the header tube length and the internal length of the collector assembly portions of the exhaust channels in the heat exchanger box. Calculating the correct length and bending the pipes to fit in the space available resulted in increased horsepower, reduced fuel consumption, cooler cylinder head temperatures, reduced noise and vibration for four-cylinder and six-cylinder aircraft engines.
    Type: Grant
    Filed: July 21, 2000
    Date of Patent: April 23, 2002
    Assignee: Power Flow Systems, Inc.
    Inventor: Robin G. Thomas