Patents by Inventor Gerald W. Keller

Gerald W. Keller 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).

  • Patent number: 4321797
    Abstract: A waste heat recovery system for use with refrigeration means and a hot water reservoir is disclosed. The system is intended for use with refrigeration means of the type including a compressor and a condenser through which a compressible refrigerant is circulated. The system includes a heat exchanger having a refrigerant passage and a water passage mutually coupled in heat exchange relation. A heat exchange circulation conduit connects the water passage of the heat exchanger in fluid communication with the hot water reservoir to permit water to be circulated from the reservoir to the heat exchanger and return. A precharged refrigerant conduit connects the outlet port of the compressor in fluid communication with the condenser and includes a pair of bypass conduit sections terminated by quick connect/disconnect coupling members for connection to the refrigerant passage of the heat exchanger.
    Type: Grant
    Filed: April 14, 1980
    Date of Patent: March 30, 1982
    Assignee: Air & Refrigeration Corp.
    Inventors: Ronald J. Yaeger, Gerald W. Keller
  • Patent number: 4316367
    Abstract: A heat recovery and hot water circulation system for use with refrigeration means and a hot water reservoir is disclosed. A hot water distribution conduit is coupled intermediate the cold water inlet and hot water outlet of the reservoir for supplying hot water to a remote station having a number of faucets coupled to the distribution conduit, and a pump is coupled to the distribution conduit for continuously circulating hot water to the faucets. A heat exchange circulation conduit is connected in parallel fluid circuit relation with the distribution conduit and in series fluid circuit relation with the pump.
    Type: Grant
    Filed: October 6, 1978
    Date of Patent: February 23, 1982
    Inventors: Ronald J. Yaeger, Gerald W. Keller
  • Patent number: 4226606
    Abstract: A waste heat recovery system for use with refrigeration means and a hot water reservoir is disclosed. The system is intended for use with refrigeration means of the type including a compressor and a condenser through which a compressible refrigerant is circulated. The system includes a heat exchanger having a refrigerant passage and a water passage mutually coupled in heat exchange relation. A heat exchange circulation conduit connects the water passage of the heat exchanger in fluid communication with the hot water reservoir to permit water to be circulated from the reservoir to the heat exchanger and return. A fluid flow restrictor is connected in series fluid circuit relation intermediate the compressor discharge outlet and the condenser for producing a pressure differential. The refrigerant passage of the heat exchanger is connected in parallel fluid circuit relation with the fluid flow restrictor.
    Type: Grant
    Filed: October 6, 1978
    Date of Patent: October 7, 1980
    Assignee: Air & Refrigeration Corp.
    Inventors: Ronald J. Yaeger, Gerald W. Keller