Patents by Inventor Roberto Pereira Caldas

Roberto Pereira Caldas 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 process for the measurement of the electric energy consumption of a plurality of consumers
    Patent number: 5831550
    Abstract: The present invention refers to a centralized system and process for measuring, registering, reading and billing data referring to electric energy consumption of a plurality of consumers (14-17), which receive the electric energy through a plurality of respective consumer connecting cables (18-21), connected to a main electric energy inlet cable (12) which, in turn, is connected to the electric energy distributing network (11).
    Type: Grant
    Filed: April 23, 1997
    Date of Patent: November 3, 1998
    Assignee: Centro de Pesquisas de Energia Eletrica - Cepel
    Inventors: Reynaldo Sigiliao Da Costa, Landulfo Mosqueira Alvarenga, Roberto Pereira Caldas, Ary Vaz Pinto Junior, Julio Cesar Gomes Pimentel, Cesar Jorge Bandim, Fabio Cavaliere De Souza
  • Measuring process for measuring chargeable electrical consumption from an electrical network and electronic electricity meter
    Patent number: 5737730
    Abstract: A process for measuring electricity consumption, especially suitable for small consumers, comprises the steps of continuously measuring consumer current, integrating the current with time to obtain a value (A.h) relating to consumption; adjusting the integration in function of the voltage of the network to obtain an adjusted value (A.sub.v.h) proportional to a preestablished unit of electricity consumption; and computing the number of preestablished units obtained to provide a value proportional to chargeable electricity consumption. The adjustment to the integration is carried out in accordance with four bands of network voltage, in the form of a nominal band on either side of the nominal network voltage, an overvoltage band, an extended voltage band below the nominal band, and an undervoltage band.
    Type: Grant
    Filed: July 3, 1996
    Date of Patent: April 7, 1998
    Assignee: Centro De Pesquisas De Energia Eletrica--Cepel
    Inventors: Landulfo Mosqueira Alvarenga, Roberto Pereira Caldas, Milton Lippincott