Patents by Inventor Darwin Campbell

Darwin Campbell 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).

  • Stabilized hanging step platform
    Patent number: 5660405
    Abstract: A retractable hanging step platform with stabilizers improves the stability of hanging steps found on motor homes and travel trailers. One or more support stabilizers are pivotably mounted on the underside of a step to engage the ground when the retractable hanging step platform is extended for use and to pivot alongside the step when retracted for storage during travel. The legs are also vertically adjustable to accommodate varying height conditions between ground level and the hanging step platform.
    Type: Grant
    Filed: October 4, 1995
    Date of Patent: August 26, 1997
    Inventor: Darwin Campbell