Patents by Inventor Hippolyte Chavagnat

Hippolyte Chavagnat 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).

  • Reversible heat pump with sub-cooling receiver
    Patent number: 6378323
    Abstract: A reversible heat pump system includes heat exchangers having significantly different refrigerant handling capacities and a refrigerant holding device for holding excess refrigerant during the heating mode of operation. The refrigerant holding device includes a heat exchanger located therein for subcooling the refrigerant in the refrigerant holding device during the heating mode. The heat exchanger in the refrigerant holding device circulates suction pressure refrigerant through the refrigerant holding device before the suction pressure refrigerant enters the suction inlet of the compressor.
    Type: Grant
    Filed: August 18, 2000
    Date of Patent: April 30, 2002
    Assignee: Carrier Corporation
    Inventor: Hippolyte Chavagnat
  • Method for protecting compressors used in chillers and/or heat pumps
    Patent number: 6321543
    Abstract: A controller monitors the saturated suction temperature and the saturated discharge temperature of a system that includes a compressor operating as part of a chiller and/or heat pump. When the compressor operates outside its compressor map, the controller takes action to ensure the compressor operates only within its compressor map. Such actions include defrosting the compressor coil if the system is in heating mode or unloading the unit.
    Type: Grant
    Filed: March 15, 2000
    Date of Patent: November 27, 2001
    Assignee: Carrier Corporation
    Inventors: Wahl Said, Hippolyte Chavagnat