Patents by Inventor Joel C. Zabel

Joel C. Zabel 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).

  • Efficient dehumidification system
    Patent number: 5031411
    Abstract: Efficient dehumidification is provided by directing air flow through a coil (30, 60) to cool the air below the dew point such that water vapor in the air is condensed to liquid to dehumidify the air, and then directing air flow through the coil to heat the air to a temperature below the incoming air to the coil and above the dew point of the air. Air flow is directed along a first set of coil sections (42, 64) giving up heat to refrigerant in the first set of coil sections to evaporate refrigerant in the first set of coil sections, and then directing the air flow along a second set of coil sections (44, 66) absorbing heat from refrigerant in the second set of coil sections to condense refrigerant in the second set of coil sections. The coil sections are connected to alternately evaporate and condense refrigerant in the coil differentially such that less refrigerant is condensed in condensing coil sections than is evaporated in evaporating coil sections.
    Type: Grant
    Filed: April 26, 1990
    Date of Patent: July 16, 1991
    Assignee: DEC International, Inc.
    Inventors: Kenneth C. Gehring, Joel C. Zabel, Phillip R. Steinmetz