Patents by Inventor Michael R. Helgeson

Michael R. Helgeson 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).

  • Work machine having improved implement coupling arrangement
    Patent number: 6108951
    Abstract: A work machine having a stick assembly which- includes (i) a stick having a forward stick aperture (ii) a guide which is pivotally coupled to the stick, and (iii) a link pivotally coupled to the guide is disclosed. The work machine also includes a coupler having a left lateral support and a right lateral support, wherein (i) the left lateral support has a left rear coupler aperture, a left intermediate coupler aperture, and a left forward coupler notch, and (ii) the right lateral support has a right rear coupler aperture, a right intermediate coupler aperture, and a right forward coupler notch.
    Type: Grant
    Filed: July 16, 1998
    Date of Patent: August 29, 2000
    Assignee: Caterpillar Inc.
    Inventors: Jay H. Renfrow, John P. Hall, Michael R. Helgeson