Patents by Inventor Keith W. Martinsen

Keith W. Martinsen 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: 4131310
    Abstract: This invention is a camping rig attachable to the rear of a van. It consists of a central open bottom rectangular box with a hinged open end wing at each side thereof; each wing containing half of a canvas tent. A door enclosed cupboard is located at one side of the central box. The open part of the central box has a removable cover provided with fold-away legs which transform the cover into a table. The folded rig is suspended from a pair of extendable arms attached to the top and rear of the van. To set up the camping tent, the arms are extended; the folded rig is moved to the free ends of the arms, rotated to and fixed in a horizontal position, and unfolded; the tent is removed from the wings, wrapped around and attached to the perimeter of the unfolded box and to the top and upper corners of the rear of the van. For packing away the rig, the above procedure is reversed. A pair of supporting legs are provided to the free end of the unfolded box.
    Type: Grant
    Filed: July 18, 1977
    Date of Patent: December 26, 1978
    Inventor: Keith W. Martinsen