Patents by Inventor Douglas L. Shaffer

Douglas L. Shaffer 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).

  • Roof rack and roof rack system for a portable shelter
    Patent number: 7971847
    Abstract: According to the present invention, a rook rack and a system of multiple roof racks of the present invention may be used to securely support equipment, such as, but not limited to, a satellite, to the roof of a portable shelter. The roof rack of the present invention generally comprises a crossbar and a pair of side supports coupled to each end thereof. A roof rack system of the present invention comprises at least two of these roof racks. The present invention further relates to a method of securing equipment to the roof of a portable shelter. This method comprises first providing a roof rack, and assembling and securing the same to the roof. After the roof rack system is secured to the roof of the portable shelter, the equipment, or an equipment platform, is placed on the crossbars and secured in its position by securing means, such as one or more clamps.
    Type: Grant
    Filed: March 15, 2006
    Date of Patent: July 5, 2011
    Assignee: Azimuth, Inc.
    Inventors: Craig W. Hartzell, Kevin G. Koch, Aaron M King, Douglas L. Shaffer