Patents by Inventor Robert Levenduski

Robert Levenduski 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).

  • Thermal storage apparatus and method for air conditioning system
    Patent number: 6668567
    Abstract: A thermal energy storage unit is provided in connection with an air conditioning or refrigeration condenser. Working fluid waste heat is stored in the thermal energy storage unit during at least a relatively hot part of the day. Heat stored in the thermal energy storage unit is then rejected to the air during a cooler period, such as night. By rejecting the stored heat directly to the atmosphere, there is no need to provide an energy-consumptive refrigeration cycle for cooling the thermal storage medium material. In this way, a refrigeration system compressor has a reduced load and/or reduced duty cycle during hot parts of the day and relatively less energy can be used during high-demand times when energy may be more expensive.
    Type: Grant
    Filed: May 23, 2002
    Date of Patent: December 30, 2003
    Inventors: Robert Levenduski, James Marsh Lester
  • Thermal storage apparatus and method for air conditioning system
    Publication number: 20030014987
    Abstract: A thermal energy storage unit is provided in connection with an air conditioning or refrigeration condenser. Working fluid waste heat is stored in the thermal energy storage unit during at least a relatively hot part of the day. Heat stored in the thermal energy storage unit is then rejected to the air during a cooler period, such as night. By rejecting the stored heat directly to the atmosphere, there is no need to provide an energy-consumptive refrigeration cycle for cooling the thermal storage medium material. In this way, a refrigeration system compressor has a reduced load and/or reduced duty cycle during hot parts of the day and relatively less energy can be used during high-demand times when energy may be more expensive.
    Type: Application
    Filed: May 23, 2002
    Publication date: January 23, 2003
    Inventors: Robert Levenduski, James Marsh Lester
  • Thermal storage apparatus and method for air conditioning system
    Patent number: 6393861
    Abstract: A thermal energy storage unit is provided in connection with an air conditioning or refrigeration condenser. Working fluid waste heat is stored in the thermal energy storage unit during at least a relatively hot part of the day. Heat stored in the thermal energy storage unit is then rejected to the air during a cooler period, such as night. By rejecting the stored heat directly to the atmosphere, there is no need to provide an energy-consumptive refrigeration cycle for cooling the thermal storage medium material. In this way, a refrigeration system compressor has a reduced load and/or reduced duty cycle during hot parts of the day and relatively less energy can be used during high-demand times when energy may be more expensive.
    Type: Grant
    Filed: September 14, 2000
    Date of Patent: May 28, 2002
    Inventors: Robert Levenduski, James Marsh Lester