Patents by Inventor Melvin L. Eilers

Melvin L. Eilers 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 and method for producing a gas having a controlled water vapor content
    Patent number: 4385910
    Abstract: An apparatus (10) and method for producing a gas having a controlled water vapor content is disclosed. Present methods of adding varying amounts of water to a gas containing nitric oxide may undesirably alter the composition of the gas.The present invention solves the above problem by providing an apparatus (10) and method for substantially fully saturating an unconditioned gas, subsequently removing water from a preselected portion of the saturated gas, and then mixing the preselected dry and saturated portions of the gas.The present invention is particularly useful in calibrating exhaust emission analyzers.
    Type: Grant
    Filed: December 23, 1981
    Date of Patent: May 31, 1983
    Assignee: Caterpillar Tractor Co.
    Inventors: Melvin L. Eilers, Michael S. Englund