Patents by Inventor Robert L. Grigg

Robert L. Grigg 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: 4579434
    Abstract: Large format photographic apparatus for creating the illusion of vehicle motion has a winch frame for supporting a cable arrangement and for simultaneously pulling two separate cables. A first cable is coupled to a subject vehicle to be photographed. The second cable is coupled via a linkage translator to a moveable platform mounted camera cart. The platform has a pair of spaced apart rails having inwardly facing surfaces and the cart has laterally disposed resilient wheels engaging the rails whereby transverse vibrational motion is reduced. Beyond the subject vehicle is an upright triangular weight bearing structure. A separate cable coupled from the rear of the vehicle being photographed to the weight balances and maintains an inertial drag on the vehicle to smooth out the motion of the cable of the vehicle. Similarly a separate cable coupled from the cart is coupled to a different upright triangular weight bearing structure.
    Type: Grant
    Filed: August 5, 1983
    Date of Patent: April 1, 1986
    Inventor: Robert L. Grigg