Patents by Inventor Roberto de Medeiros Brun

Roberto de Medeiros Brun 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).

  • System and a method of automatic defrost for a refrigeration appliance
    Patent number: 6668566
    Abstract: A system and a method of automatic defrost for a refrigeration appliance, including a hermetic compressor driven by an electric motor (1); a control unit (2); a thermal switch means (10) having a first and a second turn on condition and a turn off condition and another turn off condition of the electric motor (1); a timer (20), which measures the periods of time in the turn on and turn off conditions of the electric motor (1); a switch means (40), which selectively interrupts the energization of the electric motor (1), by instruction of the control unit (2); and a cycle counting means (30), which counts each first and second turn on conditions of the electric motor (1), the control unit (2) selectively activating the thermal switch means (10) to operate in determined turn on and turn off conditions of the electric motor (1).
    Type: Grant
    Filed: September 27, 2002
    Date of Patent: December 30, 2003
    Assignee: Multibras S.A. Eletrodomesticos
    Inventors: Roberto de Medeiros Brun, Marco Eduardo Marques
  • System and a method of automatic defrost for a refrigeration appliance
    Publication number: 20030074907
    Abstract: A system and a method of automatic defrost for a refrigeration appliance, including a hermetic compressor driven by an electric motor (1); a control unit (2); a thermal switch means (10) having a first and a second turn on condition and a turn off condition and another turn off condition of the electric motor (1); a timer (20), which measures the periods of time in the turn on and turn off conditions of the electric motor (1); a switch means (40), which selectively interrupts the energization of the electric motor (1), by instruction of the control unit (2); and a cycle counting means (30), which counts each first and second turn on conditions of the electric motor (1), the control unit (2) selectively activating the thermal switch means (10) to operate in determined turn on and turn off conditions of the electric motor (1).
    Type: Application
    Filed: September 27, 2002
    Publication date: April 24, 2003
    Inventors: Roberto De Medeiros Brun, Marco Eduardo Marques