Patents by Inventor James H. Routledge

James H. Routledge 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: 4619578
    Abstract: A retractable wheel apparatus adapted to be attached to a frame and having a first and second arm pivotally attached along the horizontal axis. Each end of each suspension arm has a wheel assembly attached thereto and each suspension arm has a combination shock absorbing and retracting mechanism attached thereto. The first and second suspension arms are independently pivotally attached so that they can react independently to bumps in the road. Furthermore the suspension arms can move to independently pivot as a unit about the first horizontal axis to travel over irregular terrain so that the two-wheel assemblies can pivot about the first horizontal axis to minimize the amount of reciprocation of the wheel assemblies with respect to each other, which would cause excessive wear and a rougher ride.
    Type: Grant
    Filed: April 19, 1985
    Date of Patent: October 28, 1986
    Inventor: James H. Routledge