Patents by Inventor Stephen J. Perelli

Stephen J. Perelli 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).

  • Timed smoke detection
    Patent number: 4383251
    Abstract: A smoke detector includes a sensing unit which has a power terminal adapted to receive electrical energy. A timing device in the smoke detector includes a switch, a timer and a manually operable device. The switch is coupled to the power terminal for interrupting current thereat. The timer can operate the switch to cause interruption of current at the power terminal for a predetermined interval. The manually operable device can actuate the timing means and start its predetermined interval.
    Type: Grant
    Filed: October 1, 1981
    Date of Patent: May 10, 1983
    Inventors: David E. Perelli, Stephen J. Perelli, John B. Jenkins, II