Patents by Inventor John M. Stopa

John M. Stopa 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).

  • Balanced dual flow regenerator heat exchanger system and core driving system
    Patent number: 5586430
    Abstract: A gas turbine engine includes a gas generator having a compressor, a first turbine member, and a combustor member between the compressor and the first turbine member for increasing the temperature of the fluid medium to be worked upon by the engine. A second turbine is located adjacent to the gas generator and it extracts energy from the fluid medium to produce rotary power. A heat scavenging member is located adjacent to the gas generator for extracting heat from the fluid medium after flowing from said second turbine and for transferring the heat into the fluid medium exiting the compressor by passing the fluid medium at least two times through the scavenging member to heat the fluid medium before flowing into the combustor member.
    Type: Grant
    Filed: May 15, 1995
    Date of Patent: December 24, 1996
    Inventor: John M. Stopa
  • Balanced dual flow regenerator heat exchanger system and core driving system
    Patent number: 5538073
    Abstract: A gas turbine engine includes a gas generator having a compressor, a first turbine member, and a combustor member between the compressor and the first turbine member for increasing the temperature of the fluid medium to be worked upon by the engine. A second turbine is located adjacent to the gas generator and it extracts energy from the fluid medium to produce rotary power. A heat scavenging member is located adjacent to the gas generator for extracting heat from the fluid medium after flowing from said second turbine and for transferring the heat into the fluid medium exiting the compressor by passing the fluid medium at least two times through the scavenging member to heat the fluid medium before flowing into the combustor member.
    Type: Grant
    Filed: September 6, 1994
    Date of Patent: July 23, 1996
    Inventor: John M. Stopa