Patents by Inventor Frederick J. Marvel

Frederick J. Marvel 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).

  • Dual path profilograph
    Patent number: 6161429
    Abstract: Apparatus for measuring two parallel spaced surface profiles is disclosed. The apparatus disclosed has dual laterally spaced beams linked to a transport device shown as a trailer that is towable by a motor vehicle. Each beam has a profiling wheel that measures road surface deviations and transmits the resulting measurements to a recording device. The beams are foldable and stowable on the trailer for transport of the apparatus between measuring sites.
    Type: Grant
    Filed: October 13, 1998
    Date of Patent: December 19, 2000
    Assignee: Paveset America, LLC
    Inventors: Frederick J. Marvel, Colin T. Fleming, Zbigniew Rybak