Patents by Inventor James C. Griffiths

James C. Griffiths 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).

  • Pulse combustion burner feed valve
    Patent number: 4752209
    Abstract: A feed valve is disclosed for self-feeding of air or fuel gas to a pulse combustion burner in response to oscillating burner pressures. The feed valve includes a housing having a plurality of flapper valves arranged to provide additive one-way flows into the valve housing and a combined single input flow into the burner.
    Type: Grant
    Filed: January 23, 1987
    Date of Patent: June 21, 1988
    Assignee: American Gas Association
    Inventors: Palamadi S. Vishwanath, James C. Griffiths
  • Pulse combustion engine and heat transfer system
    Patent number: 4730990
    Abstract: A pulse combustion powered apparatus is disclosed for temperature conditioning and pressurizing fluids. The alternating periods of positive and negative pressure of the combustion gases of a pulse combustion burner drive a reciprocating compressor and the rejected engine heat is recovered by heat exchange with a primary fluid. The compressor may be included in a reversible refrigeration circuit to provide heating and cooling of secondary fluids.
    Type: Grant
    Filed: April 10, 1987
    Date of Patent: March 15, 1988
    Assignee: American Gas Association
    Inventors: Richard J. Priem, M. Reza Ghassemzadeh, James C. Griffiths
  • Pulse combustion engine and heat transfer system
    Patent number: 4685510
    Abstract: A pulse combustion powered apparatus is disclosed for temperature conditioning and pressurizing fluids. The alternating periods of positive and negative pressure of the combustion gases of a pulse combustion burner drive a reciprocating compressor and the rejected engine heat is recovered by heat exchange with a primary fluid. The compressor may be included in a reversible refrigeration circuit to provide heating and cooling of secondary fluids.
    Type: Grant
    Filed: April 24, 1986
    Date of Patent: August 11, 1987
    Assignee: American Gas Association
    Inventors: Richard J. Priem, M. Reza Ghassemzadeh, James C. Griffiths
  • Pulse combustion deep fat fryer
    Patent number: 4550711
    Abstract: A pulse combustion burner and heat exchanger for immersion in a deep fat fryer vessel. The geometry and juxtaposition of the burner and heat exchanger afford a compact assembly of exceptionally high efficiency. The burner is in the form of a horizontal tube and the heat exchanger for the combustion products is in the form of a bottomless, topless rectangular box surrounding the burner.
    Type: Grant
    Filed: December 9, 1983
    Date of Patent: November 5, 1985
    Assignee: Gas Research Institute
    Inventor: James C. Griffiths