Patents by Inventor Nathan Alter

Nathan Alter 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).

  • Apparatus for detecting persons hidden in vehicles
    Patent number: 4096474
    Abstract: A seismic detection system for detecting persons hidden in vehicles inclu a seismic transducer used as a sensing device and electronic processing circuitry for processing the output signals from the seismic transducer. The electronic circuitry detects output signals from the seismic transducer, and, by counting the number of times the signal crosses a preset threshold during a given time window, makes a logic choice between there being personnel or no personnel in the vehicle. If a person or persons are in the vehicle an output is produced and this output is used to actuate audio and/or visual indicators thereby indicating that a person or persons are in the vehicle.
    Type: Grant
    Filed: April 12, 1976
    Date of Patent: June 20, 1978
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Charles B. Greer, Nathan Alter, David E. Locke