Patents by Inventor Gilbert T. Parra

Gilbert T. Parra 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).

  • Patent number: 4442716
    Abstract: This electronic scanning pressure system includes a plurality of pressure transducers (60). A means (22) obtains an electrical signal indicative of a pressure measurement from each of the plurality of pressure transducers (60). A multiplexing means (12) is connected for selectively supplying inputs from the plurality of pressure transducers (60) to the signal obtaining means (22). A data bus (10) connects the plurality of pressure transducers (60) to the multiplexing means (12). A latch circuit (16) is connected to supply control inputs to the multiplexing means (12). An address bus (14) is connected to supply an address signal of a selected one of the plurality of pressure transducers (60) to the latch circuit (16). In operation, each of the pressure transducers (60) is successively scanned by the multiplexing means (12) in response to address signals supplied on the address bus (14) to the latch circuit (16).
    Type: Grant
    Filed: April 30, 1982
    Date of Patent: April 17, 1984
    Assignee: The United States of America as represented by the Administrator of the National Areonautics and Space Administration
    Inventors: Charles F. Coe, Gilbert T. Parra
  • Patent number: 4094073
    Abstract: An angle detector for determining a transducer's angular disposition to a capacitive pickup element. The transducer comprises a pendulum mounted inductive element moving past the capacitive pickup element. The capacitive pickup element divides the inductive element into two parts L.sub.1 and L.sub.2 which form the arms of one side of an a-c bridge. Two networks R.sub.1 and R.sub.2 having a plurality of binary weighted resistors and an equal number of digitally controlled switches for removing resistors from the networks form the arms of the other side of the a-c bridge. A binary counter, controlled by a phase detector, balances the bridge by adjusting the resistance of R.sub.1 and R.sub.2. The binary output of the counter is representative of the angle.
    Type: Grant
    Filed: November 10, 1976
    Date of Patent: June 13, 1978
    Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration
    Inventor: Gilbert T. Parra