Patents by Inventor James E. Sweetland

James E. Sweetland 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).

  • Graphite guide rings
    Patent number: 5769920
    Abstract: A guide-ring comprises a graphite body and a mechanically attached insert, preferable made of metal. The insert and body form a guide ring supporting a split neck-ring used during glass container manufacturing. The graphite body avoids the need for separate lubrication while being sufficiently strong enough to enable mechanical attachment of the insert. The combination provides the structural integrity needed to resist damage during glass container manufacturing operations and the thermal properties needed to contact hot glass gobs.
    Type: Grant
    Filed: December 29, 1994
    Date of Patent: June 23, 1998
    Assignee: Union Oil Company of California
    Inventors: James E. Sweetland, Thomas M. Smith, David H. Dodson, Timothy A. Stover, Michael E. Easley
  • Glass gob drop guide funnel assembly
    Patent number: 5511593
    Abstract: A graphite funnel inserted into a metal funnel support sleeve guides hot glass gobs from a furnace to the glass blowing mold. The graphite insert is adjustable by set screws and is easily repositioned. The graphite insert has an outer diameter slightly less than the metal retainer to allow ambient air to pass upwardly past it.
    Type: Grant
    Filed: March 6, 1995
    Date of Patent: April 30, 1996
    Assignee: Union Oil Company of California
    Inventor: James E. Sweetland
  • Glass gob drop guide funnel assembly
    Patent number: 5394910
    Abstract: A graphite funnel inserted into a metal funnel support sleeve guides hot glass gobs from a furnace to the glass blowing mold. The graphite insert is adjustable by set screws and is easily repositioned. The graphite insert has an outer diameter slightly less than the metal retainer to allow ambient air to pass upwardly past it.
    Type: Grant
    Filed: September 29, 1992
    Date of Patent: March 7, 1995
    Assignee: Union Oil Company of California
    Inventor: James E. Sweetland