Patents by Inventor Norman E. Smith

Norman E. Smith 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).

  • Breathing apparatus
    Patent number: 4016876
    Abstract: Breathing apparatus which incorporates a sensing device operable to adjust the amount of breather's exhaled gas captured in a gas collector section as a direct function of the carbon dioxide content of the exhalation. The amount of exhaled gas captured is sufficiently low in carbon dioxide (CO.sub.2) content to permit rebreathing on the next inhalation, at which time the sensor again adjusts the volume of exhaled gas to be captured. In the one embodiment, a fire fighter's breathing system is described wherein the gas collector section is integral with the breathing mask worn by the fire fighter.
    Type: Grant
    Filed: July 30, 1975
    Date of Patent: April 12, 1977
    Assignee: Westinghouse Electric Corporation
    Inventors: Frank E. Martin, John R. Colston, Norman E. Smith
  • Armored vehicle
    Patent number: D323305
    Type: Grant
    Filed: May 2, 1989
    Date of Patent: January 21, 1992
    Inventor: Norman E. Smith