Patents by Inventor J. William Heathcott

J. William Heathcott 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).

  • Stuffing box with improved packing rings and method
    Patent number: 5845909
    Abstract: A stuffing box 10, 60 designed for sealing engagement with a rod member R includes a plurality of stacked packing rings 32, 110, 150, 210, and a gland member 42, 64 axially moveable relative to the stuffing box body 12, 62 for varying the compressive force on the packing rings. Each packing ring comprises an annular rubber carrier 34, 112, 152, 212 having tapered upper and lower surfaces, and an annular plastic dynamic seal 36, 114, 154, 214 for sealing engagement with the rod member. Gland member 42, 64 exerts an axially compressive force on the radially exterior portion of each angularly wedged packing ring and thereby generates a radial inwardly directed biasing force on each plastic dynamic seal through the rubber carrier for sealing engagement of the dynamic seal with the rod member.
    Type: Grant
    Filed: March 10, 1997
    Date of Patent: December 8, 1998
    Assignee: Flow Control Equipment, Inc.
    Inventors: Lawrence F. Angelo, J. William Heathcott, Stephen L. Witte, Sr.
  • Stuffing box with improved packing rings and method
    Patent number: 5622371
    Abstract: A stuffing box 10, 60 designed for sealing engagement with a rod member R includes a plurality of stacked packing rings 32, 110, 150, 210, and a gland member 42, 64 axially moveable relative to the stuffing box body 12, 62 for varying the compressive force on the packing rings. Each packing ring comprises an annular rubber carrier 34, 112, 152, 212 having tapered upper and lower surfaces, and an annular plastic dynamic seal 36, 114, 154, 214 for sealing engagement with the rod member. Gland member 42, 64 exerts an axially compressive force on the radially exterior portion of each angularly wedged packing ring and thereby generates a radial inwardly directed biasing force on each plastic dynamic seal through the rubber carrier for sealing engagement of the dynamic seal with the rod member.
    Type: Grant
    Filed: January 11, 1996
    Date of Patent: April 22, 1997
    Inventors: Lawrence F. Angelo, J. William Heathcott, Stephen L. Witte, Sr.