Patents by Inventor Dale A. Hulst

Dale A. Hulst 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).

  • Refrigeration circuit with reheat coil
    Patent number: 6612119
    Abstract: A refrigeration system with a high percentage of fresh air. The system comprises a supply air duct; an indoor heat exchange coil operably positioned in the supply air duct; a reheat heat exchange coil operably positioned in the supply air duct; an outdoor heat exchange coil; at least one compressor; and an expansion device. The system also comprises refrigeration system tubing connected to and serially arranging the compressor, the outdoor heat exchange coil, the expansion device and the indoor coil into a refrigeration circuit; and reheat tubing connecting the reheat coil to the refrigeration tubing so as to arrange the reheat coil in a parallel circuited arrangement with the outdoor heat exchange coil and in a series circuited arrangement with the compressor, the expansion device and the indoor heat exchange coil.
    Type: Grant
    Filed: October 18, 2001
    Date of Patent: September 2, 2003
    Assignee: American Standard International Inc.
    Inventors: David H. Eber, Paul R. Glamm, Dwayne L. Johnson, Walter Earhart, Jr., John F. Klouda, Brian J. Kiel, Dale A. Hulst
  • Refrigeration circuit with reheat coil
    Patent number: 6381970
    Abstract: A refrigeration system with a high percentage of fresh air. The system comprises a supply air duct; an indoor heat exchange coil operably positioned in the supply air duct; a reheat heat exchange coil operably positioned in the supply air duct; an outdoor heat exchange coil; at least one compressor; and an expansion device. The system also comprises refrigeration system tubing connected to and serially arranging the compressor, the outdoor heat exchange coil, the expansion device and the indoor coil into a refrigeration circuit; and reheat tubing connecting the reheat coil to the refrigeration tubing so as to arrange the reheat coil in a parallel circuited arrangement with the outdoor heat exchange coil and in a series circuited arrangement with the compressor, the expansion device and the indoor heat exchange coil.
    Type: Grant
    Filed: March 5, 1999
    Date of Patent: May 7, 2002
    Assignee: American Standard International Inc.
    Inventors: David H. Eber, Paul R. Glamm, Dwayne L. Johnson, Walter Earhart, Jr., John F. Klouda, Brian J. Kiel, Dale A. Hulst
  • Refrigeration circuit with reheat coil
    Publication number: 20020023443
    Abstract: A refrigeration system with a high percentage of fresh air. The system comprises a supply air duct; an indoor heat exchange coil operably positioned in the supply air duct; a reheat heat exchange coil operably positioned in the supply air duct; an outdoor heat exchange coil; at least one compressor; and an expansion device. The system also comprises refrigeration system tubing connected to and serially arranging the compressor, the outdoor heat exchange coil, the expansion device and the indoor coil into a refrigeration circuit; and reheat tubing connecting the reheat coil to the refrigeration tubing so as to arrange the reheat coil in a parallel circuited arrangement with the outdoor heat exchange coil and in a series circuited arrangement with the compressor, the expansion device and the indoor heat exchange coil.
    Type: Application
    Filed: October 18, 2001
    Publication date: February 28, 2002
    Inventors: David H. Eber, Paul R. Glamm, Dwayne L. Johnson, Walter Earhart, John F. Klouda, Brian J. Kiel, Dale A. Hulst