Patents by Inventor Lloyd E. McHattie

Lloyd E. McHattie 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 determining wet bulb globe temperature
    Patent number: 3992942
    Abstract: Apparatus for determining the wet bulb globe temperature (WBGT) index of the surroundings constructed from a copper globe having a blackened exterior surface and provided with a fabric cover, which may entirely surround the globe or may be in strips or strands extending over the surface of the globe, with a source of water to maintain the fabric cover at least partially wet. A temperature sensing device, which may conveniently be a glass thermometer, as its sensing portion located at the center of the globe whereby a measurement of the wet bulb globe index of the surroundings can be obtained.
    Type: Grant
    Filed: March 11, 1974
    Date of Patent: November 23, 1976
    Assignee: Her Majesty the Queen in right of Canada, as represented by the Minister of National Defence
    Inventors: Lorne A. Kuehn, Lloyd E. McHattie