Patents by Inventor Walter F. Schuchard

Walter F. Schuchard 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).

  • Smoke detector with remote alarm indication
    Patent number: 4517555
    Abstract: A smoke detector receiving at two input terminals DC power from a remote source not only gives an alarm indication in response to a significant density of smoke, but senses the polarity of DC power at the terminals and generates a secondary signal, distinguishable from the alarm signal, when the polarity of power source is reversed.
    Type: Grant
    Filed: April 17, 1984
    Date of Patent: May 14, 1985
    Assignee: American District Telegraph Co.
    Inventors: Angelo A. Marsocci, Walter F. Schuchard
  • Current sensing system
    Patent number: 4164016
    Abstract: A circuit for sensing the current applied to a load in power supplies, inverters, and other power conversion equipment and similar systems wherein the voltage between the center tap of the transformer secondary winding and the junction of two resistors connected across the secondary winding in series is sensed. The control circuit for the electronic system adjusts the overall system operation to obtain the desired volt-ampere output in response to this voltage level.
    Type: Grant
    Filed: November 13, 1978
    Date of Patent: August 7, 1979
    Assignee: ESB Incorporated
    Inventor: Walter F. Schuchard