Patents by Inventor Robert H. Banks

Robert H. Banks 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).

  • Diver's piezoelectric microphone with integral AGC preamplifier
    Patent number: 4013992
    Abstract: An improved microphone assembly for use in a diver's mask or helmet and wh is characterized by a substantially flat frequency response at pressures from 1 to 30 or more atmospheres of breathing gas. A silicone rubber coated piezoelectric diaphragm is mounted by its periphery in a cylindrical housing with both sides of the diaphragm exposed to ambient gas pressures. A ground plate is mounted in said housing with one side in spaced relation to the diaphragm and having on the other side thereof a preamplifier and automatic gain control circuit electrically connected to the diaphragm and encased in waterproof potting compound.
    Type: Grant
    Filed: January 28, 1976
    Date of Patent: March 22, 1977
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Larry F. Dewberry, Robert H. Banks, Clell A. Dildy