Patents by Inventor Gilbert C. Brisset

Gilbert C. Brisset 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).

  • Electrical measurement circuit including a low-pass filter, in particular for weighing
    Patent number: 4531600
    Abstract: A link of controllable resistance comprising an FET (Q16) connected in series with a low-value resistor (R15) is connected in parallel with a time constant determining resistance (R11) in an RC type low-pass filter. A discriminator circuit (40, 50, 60) provides an on/off type signal following variations in the DC component of an input signal present on a terminal (A). A retriggerable monostable (80) defines a "neutral" time interval of predetermined duration running from the beginning of said on/off signal. At the end of said neutral period, a circuit (20) switches the FET on, thereby reducing the time constant of the RC network in the RC low-pass filter. This time constant is subsequently progressively rasied to a high value by progressively switching the FET off. The filter is specially applicable to weighing a body that is subjected to movement or to oscillation, or to performing weighing measurements in a vibrating environment.
    Type: Grant
    Filed: November 30, 1983
    Date of Patent: July 30, 1985
    Assignee: Testut-Aequitas
    Inventors: Jacques F. Langlais, Gilbert C. Brisset