Patents by Inventor Eldon L. Piper

Eldon L. Piper 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).

  • Recycling drain pan
    Patent number: 4114644
    Abstract: A drain pan forming an enclosure having a top and bottom wall and a front wall and terminates in a drain opening into the enclosure at the juncture of the front wall and top wall so that anti-freeze from an automotive radiator may be drained onto the front wall and through the drain opening into the interior of the enclosure. A sump pump is mounted in the interior of the enclosure for recycling the collected anti-freeze fluid through a flexible hose connected to the outlet of the pump back into the radiator.
    Type: Grant
    Filed: February 8, 1977
    Date of Patent: September 19, 1978
    Inventor: Eldon L. Piper