Patents by Inventor Robert E. Roelofs

Robert E. Roelofs 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: 4580798
    Abstract: An air suspension system for the rear end of a motor home including a pair of longitudinally extending frames having a transversely extending axle housing positioned below the frames. The air suspension system comprises a pair of generally L-shaped arms pivotally secured at the forward ends thereof to the frame. An air bag is secured to the rearward end of each of the L-shaped arms and extends upwardly therefrom. The upper ends of the air bags are secured to laterally extending brackets which are secured to the frames. Each of the L-shaped arms are secured to the axle housing for movement therewith. An air pump is provided for supplying air to the interiors of the air bags as required. A level control is operatively connected to each of the L-shaped arms for sensing relative movement between the arms and the associated frame for controlling the flow of air into and out of the air bag.
    Type: Grant
    Filed: November 13, 1984
    Date of Patent: April 8, 1986
    Inventor: Robert E. Roelofs