Patents by Inventor Nelson Whitaker Filho

Nelson Whitaker Filho 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).

  • AIRCRAFT WINDOW HEATING SYSTEM WITH REGULATED DC VOLTAGE
    Publication number: 20210229793
    Abstract: The example non-limiting technology herein provides an alternative way to control window heater temperature by delivering to the heater a DC voltage with variable level.
    Type: Application
    Filed: June 6, 2018
    Publication date: July 29, 2021
    Inventors: Cleber Augusto BORGES, Gustavo Amaral FERREIRA DE MELO, Pedro Henrique SILVA MIRANDA, Nelson Whitaker FILHO
  • Presence of communication interlock method and apparatus for reducing or eliminating aircraft communications radio interference
    Patent number: 7796954
    Abstract: In one exemplary illustrative non-limiting aircraft radio communications system, a “POCI” (“Presence Of Communication Interlock”) is comprised of a double balanced low pass LC filter covering the voice range. The voice signals coming from the two VHF's are filtered and processed by an amplifier at an adequate level to be peak detected. The resulting signal is applied to an amplifier with a defined hysteresis and time constant and finally drives the relay interlock circuit that inhibits an ACARS VHF radio from transmitting whenever other on-board comm. VHF transceivers are receiving voice signals. Visual indicators provide information on system operation and system power failure.
    Type: Grant
    Filed: April 11, 2007
    Date of Patent: September 14, 2010
    Assignee: Embraer-Empresa Brasileira de Aeronautica S. A.
    Inventor: Nelson Whitaker Filho
  • PRESENCE OF COMMUNICATION INTERLOCK METHOD AND APPARATUS FOR REDUCING OR ELIMINATING AIRCRAFT COMMUNICATIONS RADIO INTERFERENCE
    Publication number: 20080254750
    Abstract: In one exemplary illustrative non-limiting aircraft radio communications system, a “POCI” (“Presence Of Communication Interlock”) is comprised of a double balanced low pass LC filter covering the voice range. The voice signals coming from the two VHF's are filtered and processed by an amplifier at an adequate level to be peak detected. The resulting signal is applied to an amplifier with a defined hysteresis and time constant and finally drives the relay interlock circuit that inhibits an ACARS VHF radio from transmitting whenever other on-board comm. VHF transceivers are receiving voice signals. Visual indicators provide information on system operation and system power failure.
    Type: Application
    Filed: April 11, 2007
    Publication date: October 16, 2008
    Inventor: Nelson Whitaker Filho