Patents by Inventor James L. Hamann

James L. Hamann 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).

  • Drain line cleaning apparatus
    Patent number: 5588171
    Abstract: A drain line cleaning apparatus is disclosed which includes a spin head, capable of high speed rotation. The spin head is attached to a spinner cap which carries a bit and one or more blade members which cut through roots and other residue deposited in drains. The spin head is powered by water jetted to notches formed on an inner surface of the spin head. The jetted water is also deflected by the notches to create thrust to force the drain line cleaning apparatus through the drain line.
    Type: Grant
    Filed: March 24, 1995
    Date of Patent: December 31, 1996
    Assignee: Pettibone Corporation
    Inventor: James L. Hamann