Externally heated engine

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 7076941
SERIAL NO

11198681

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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An externally heated engine is provided which has at least two pistons. The first piston has a first side (working side) and a second side opposite the first side. The first side of the first piston and the first cylinder define a first working chamber containing working fluid. The second side of the first piston and the first cylinder define a first opposite chamber containing an opposing fluid. A heater heats the working fluid in the first cylinder. Preferably, the cylinder is heated by a heat source so that the working fluid has a temperature of no more than 500.degree. Fahrenheit with a temperature difference between the heat source and the working fluid of less than 5.degree. Fahrenheit. The second piston reciprocates within a second cylinder, and has a first side (working side) and a second side opposite the first side. The first side and the cylinder define a working chamber containing working fluid. The second side of the piston and the cylinder define a second opposite chamber containing an opposing fluid. The working fluid in the second cylinder is cooled to a temperature of below 35.degree. Fahrenheit.

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Patent Owner(s)

  • RENEWABLE THERMODYNAMICS, LLC

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hoffman, Gary P Middlesex, NY 10 171
Ide, Richard J Middlesex, NY 4 27

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