Patents by Inventor Mark R. Messman

Mark R. Messman 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 leak testing vehicle wheels
    Patent number: 5850036
    Abstract: An apparatus for checking leakage of a test gas through a wheel. The apparatus comprises wheel recognition apparatus for generating a first signal indicative of selected parameters of a wheel, a test cell for applying a differential pressure of a test gas through a selected portion of the wheel, and detecting apparatus for determining a leak rate of the test gas through the selected portion of the wheel. The detecting apparatus generates a second signal indicative of the leak rate. The apparatus of the invention also includes a microprocessor operatively connected to the recognition apparatus for receiving and processing the first signal to determine the model of the wheel from among a group of preselected model wheels. The apparatus is also operatively connected to the test cell for controlling operation of the detecting apparatus according to the model of the wheel, and operatively connected to the detecting apparatus for receiving and processing the second signal to generate a record of the leak rate.
    Type: Grant
    Filed: September 3, 1997
    Date of Patent: December 15, 1998
    Assignee: Hayes Lemmerz International, Inc.
    Inventors: Richard J. Giromini, Mark R. Messman, Timothy M. Alteri