Patents by Inventor James D. Hull

James D. Hull 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).

  • Directly cooled, side fired forehearth
    Patent number: 6134921
    Abstract: A forehearth (20) for cooling glass from a melting furnace as it flows to a feeder bowl (28) from which it is discharged to a forming machine. The forehearth is in the form of an elongate, horizontally extending insulated trough (26) with a roof formed by a longitudinally extending series of roof block elements (30), each of which is of one-piece construction and extends completely across the width of the insulated trough. The downwardly facing surface of each roof block element is contoured to incorporate concave portions (30a, 30b) near the edges of the forehearth, a concave portion (30c) above the center of the forehearth and convex portions (30d, 30e) separating the center concave portion from the side concave portions to substantially impede heat transfer between the side concave portions and the center concave portion.
    Type: Grant
    Filed: August 27, 1999
    Date of Patent: October 24, 2000
    Assignee: Owens-Brockway Glass Container Inc.
    Inventors: James D. Hull, Philip D. Perry, Roland F. Pimm
  • Directly cooled, side fired forehearth
    Patent number: 5944864
    Abstract: A forehearth (20) for cooling glass from a melting furnace as it flows to a feeder bowl (28) from which it is discharged to a forming machine. The forehearth is in the form of an elongate, horizontally extending insulated trough (26) with a roof formed by a longitudinally extending series of roof block elements (30), each of which is of one-piece construction and extends completely across the width of the insulated trough. The downwardly facing surface of each roof block element is contoured to incorporate concave portions (30a, 30b) near the edges of the forehearth, a concave portion (30c) above the center of the forehearth and convex portions (30d, 30e) separating the center concave portion from the side concave portions to substantially impede heat transfer between the side concave portions and the center concave portion.
    Type: Grant
    Filed: October 8, 1997
    Date of Patent: August 31, 1999
    Assignee: Owens-Brockway Glass Container Inc.
    Inventors: James D. Hull, Philip D. Perry, Roland F. Pimm
  • Directly cooled, side fired forehearth
    Patent number: 5718741
    Abstract: A forehearth (20) for cooling glass from a melting furnace as it flows to a feeder bowl (28) from which it is discharged to a forming machine. The forehearth is in the form of an elongate, horizontally extending insulated trough (26) with a roof formed by a longitudinally extending series of roof block elements (30), each of which is of one-piece construction and extends completely across the width of the insulated trough. The downwardly facing surface of each roof block element is contoured to incorporate concave portions (30a, 30b) near the edges of the forehearth, a concave portion (30c) above the center of the forehearth and convex portions (30d, 30e) separating the center concave portion from the side concave portions to substantially impede heat transfer between the side concave portions and the center concave portion.
    Type: Grant
    Filed: May 19, 1995
    Date of Patent: February 17, 1998
    Assignee: Owens-Brockway Glass Container Inc.
    Inventors: James D. Hull, Philip D. Perry, Roland F. Pimm