Patents by Inventor Eugene A. Duncan

Eugene A. Duncan 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).

  • Dynamic variable resistance balance board
    Patent number: 6019712
    Abstract: A balancing apparatus includes a platform that tilts upon a hemisphere attached to the lower surface thereof. The platform has a grooved track along its periphery. The outermost wall of the track is inclined. A ball is movable around said track upon tilting of the platform and can climb the outermost wall of the track when moved at a fast speed. The ball adds resistance to the tilting of the platform.
    Type: Grant
    Filed: December 30, 1998
    Date of Patent: February 1, 2000
    Inventor: James Eugene Duncan
  • Method and apparatus for bonding polytetrafluoroethylene to a metal substrate and articles thereby produced
    Patent number: 5198053
    Abstract: Polytetrafluoroethylene (PTFE) is bonded to a metal substrate such as an oil seal casing via an intermediary bonding layer of fluorinated ethylene propylene (FEP). Induction heating is used to rapidly melt the FEP and PTFE without degrading their physical properties. The induction heating unit is preferably controlled by a temperature signal representing the temperature of the metal substrate.
    Type: Grant
    Filed: August 8, 1991
    Date of Patent: March 30, 1993
    Assignee: Mather Seal Company
    Inventor: Eugene A. Duncan
  • Hanging Christmas tree
    Patent number: D478021
    Type: Grant
    Filed: July 29, 2002
    Date of Patent: August 5, 2003
    Inventors: Richard Eugene Duncan, Jr., Erin Theresa Duncan