Patents by Inventor Larry G. Eben

Larry G. Eben 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).

  • Patent number: 5492432
    Abstract: A concrete vibrator apparatus is described for use in conjunction with a concrete finishing machine that is movable longitudinally along a roadway. The finishing machine includes a finishing unit engageable with the surface of the concrete and movable transversely across the roadway, a supporting frame mounted to and extending forwardly and outwardly from the movable finishing unit, and a vibrator assembly mounted to the supporting frame. The vibrator assembly includes first and second vibrator units, with each of the vibrator units being independently movable between a downwardly position wherein the vibrator unit extends into and below the surface of the concrete and an upwardly position wherein the vibrator unit is out of contact with the surface of the roadway. A control mechanism is described for controlling the selective movement of the vibrator units and the rate of vibration of the vibrator units.
    Type: Grant
    Filed: March 18, 1994
    Date of Patent: February 20, 1996
    Assignee: CMI Corporation
    Inventors: Larry G. Eben, Jerry Chaon, Ewald R. Ulmer
  • Patent number: 5388927
    Abstract: A pan drag device is disclosed for attachment to a concrete finishing machine movable longitudinally along an elongated body of poured concrete, with the finishing machine having a finishing unit engageable with the surface of the poured concrete and movable transversely across the body of concrete to grade the concrete. The pan drag device includes support members mounted to and extending rearwardly from the finishing unit and movable with the finishing unit and pan drag apparatus mounted to the support members for engaging the graded concrete surface to finish and seal the concrete surface.
    Type: Grant
    Filed: March 25, 1993
    Date of Patent: February 14, 1995
    Assignee: CMI Corporation
    Inventors: Ewald R. Ulmer, Larry G. Eben