Patents by Inventor Calvin Douglas Groth

Calvin Douglas Groth 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: 6981835
    Abstract: A recreational vehicle loading and transport platform for pickups provides a base mountable in a pickup box to pivotally carry a transport platform below the upper edges of the pickup box. The transport platform carries outrigger assemblies laterally of and depending below the upper edge of the pickup box to support outer support structures of recreational vehicles straddling the pickup box sides. A pneumatic cylinder moves the forward end of the transport platform vertically to responsively tilt the transport platform for loading and unloading of recreational vehicles. A loading and unloading ramp is removably secured to the rear end of the transport platform to move between use and storage positions.
    Type: Grant
    Filed: April 4, 2005
    Date of Patent: January 3, 2006
    Inventor: Calvin Douglas Groth