Patents by Inventor Keith W. Meyer

Keith W. Meyer 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).

  • Low fiction rotating bushing, particularly for heavy vehicle lift axle
    Patent number: 6619639
    Abstract: A bushing for a lift axle assembly for a heavy vehicle. The lift axle assembly selectively lowers and raises supplemental wheels of the vehicle into and out of engagement with a support surface and forms a part of the support system for the vehicle when the supplemental wheels are lowered. The assembly comprising at least one bushing. The bushing includes a hard polymeric sleeve having a wall thickness of about 0.1″ to about 0.3″ (0.25-0.76 cm) and a hardness of greater than Shore 65D. An elastomeric polyurethane sleeve surrounds the hard polymeric sleeve and is fixed to it. A metal shaft is rotatably mounted in the hard polymeric sleeve.
    Type: Grant
    Filed: December 21, 2001
    Date of Patent: September 16, 2003
    Assignee: ATRO Engineered Systems, Inc.
    Inventors: Bert C. Shelley, Keith W. Meyer