Patents by Inventor James L. Raffenberger

James L. Raffenberger 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).

  • Foldable tank drain stop cover
    Patent number: 4574976
    Abstract: This tank drain cover is designed to cover and uncover the drain opening in a foldable liquid storage tank, with little loss of liquid when the liquid in one tank is transferred to a similar tank. Primarily, it consists of a flexible and water-proof flap, that will fasten over the drain opening in the tank, and velcro fastener strips or other fastener means are secured to the flap and around the drain opening through the tank, to effect the holding of the flap over the opening.
    Type: Grant
    Filed: December 20, 1984
    Date of Patent: March 11, 1986
    Inventors: Wayne R. Hess, James L. Raffenberger