Patents by Inventor Derold L. Kelley

Derold L. Kelley 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).

  • Deployable vehicle access ramp
    Patent number: 5380144
    Abstract: An access ramp for a van or a similar vehicle having a housing below the vehicle floor and adjacent door which houses the ramp structure. A carrier is extendable and retractable and is mechanically linked to a ramp platform. A boom arm on the carrier extends when the carrier extends and guides a cable which is motor driven to lower and lift the platform. Lift cams elevate the inner end of the platform when the platform is extended to bring it into close proximity with the vehicle floor.
    Type: Grant
    Filed: September 10, 1993
    Date of Patent: January 10, 1995
    Assignee: Care Concepts, Inc.
    Inventors: Bert R. Smith, Derold L. Kelley