Patents by Inventor Frederick J. Conforti

Frederick J. Conforti 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: 3932850
    Abstract: An improved warning device having means for sensing or detecting a predetermined danger or phenomenon has a compensation circuit for the sensing means, including compensating means connected to the sensing means, amplifier means connected to the junction of the sensing and compensating means, and a feed-back circuit connected to the output of the amplifier means and the input of the compensating means for maintaining the output voltage of the amplifier means substantially constant despite slowly occurring changes in the voltage drop across the sensing means. Means, such as a resistance-capacitance network, is provided in the feedback circuit for rendering the amplifier means non-responsive to slowly occurring changes in the voltage drop across the sensing means and for maintaining the amplifier means responsive to rapidly occurring changes in the voltage drop across the sensing means, as occurs in the presence of the danger or phenomenon to be detected.
    Type: Grant
    Filed: January 22, 1975
    Date of Patent: January 13, 1976
    Assignee: Pittway Corporation
    Inventors: Frederick J. Conforti, Clifford E. Mensing