Patents by Inventor Kevin M. Hayward

Kevin M. Hayward 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).

  • Reactive hot wire control apparatus and method responsive to wire thermal expansion and contraction
    Patent number: 6822203
    Abstract: Control system and apparatus for controlling current input to an electrical resistance element such as a seal wire. The system and apparatus of the present invention is a closed loop feedback modification to conventional systems, and takes advantage of the inherent expansion of the seal wire as it is heated. When the seal wire expands to a predetermined length, a switch is triggered which interrupts at least a portion of the power supplied to the wire for heating. The interruption continues until the wire contracts to a length less than the predetermined length, whereupon the interruption ceases and heating of the wire resumes normal operation.
    Type: Grant
    Filed: September 20, 2002
    Date of Patent: November 23, 2004
    Assignee: Shanklin Corporation
    Inventor: Kevin M. Hayward
  • Reactive hot wire control apparatus and method
    Publication number: 20040056019
    Abstract: Control system and apparatus for controlling current input to an electrical resistance element such as a seal wire. The system and apparatus of the present invention is a closed loop feedback modification to conventional systems, and takes advantage of the inherent expansion of the seal wire as it is heated. When the seal wire expands to a predetermined length, a switch is triggered which interrupts at least a portion of the power supplied to the wire for heating. The interruption continues until the wire contracts to a length less than the predetermined length, whereupon the interruption ceases and heating of the wire resumes normal operation.
    Type: Application
    Filed: September 20, 2002
    Publication date: March 25, 2004
    Inventor: Kevin M. Hayward