Patents by Inventor Sam J. Wipf

Sam J. Wipf 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).

  • Portable ventilating system
    Patent number: 6712690
    Abstract: The portable ventilating system of the invention includes a base adapted for being towed behind a prime mover, ground engaging apparatus for supporting the base frame in a manner permitting movement of the base over the ground, a fan assembly mounted on the base and having an impeller for creating an air flow, and power transfer apparatus for rotating the impeller of the fan assembly. The power transfer apparatus is connectable to and drivable by a power take off apparatus of the prime mover.
    Type: Grant
    Filed: October 30, 2001
    Date of Patent: March 30, 2004
    Inventor: Sam J. Wipf