Patents by Inventor Charles L. Seefluth

Charles L. Seefluth 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).

  • Polymer slurry washing
    Patent number: 4526684
    Abstract: A polymer slurry is passed past a filter and a wash fluid is caused to flow at a substantial angle with respect to the flow of the polymer slurry and toward the filter such as to replace at least a substantial portion of the fluid of the polymer slurry.
    Type: Grant
    Filed: September 13, 1983
    Date of Patent: July 2, 1985
    Assignee: Phillips Petroleum Company,
    Inventor: Charles L. Seefluth
  • Polymer slurry washing
    Patent number: 4421874
    Abstract: A polymer slurry is passed past a filter and a wash fluid is caused to flow at a substantial angle with respect to the flow of the polymer slurry and toward the filter such as to replace at least a substantial portion of the fluid of the polymer slurry.
    Type: Grant
    Filed: June 2, 1981
    Date of Patent: December 20, 1983
    Assignee: Phillips Petroleum Company
    Inventor: Charles L. Seefluth
  • Means for controlling temperature of picker fingers to adjust parison alignment
    Patent number: 4057386
    Abstract: An open end parison preform is heated to molding temperature preparatory to transfer to a molding station. The thus heated parison is grasped by a pair of opposed picker fingers and transferred into position over a neck forming plug. The relative temperature of the opposed picker fingers is controlled which effects the alignment of the bottom end of the parison over the plug.
    Type: Grant
    Filed: July 16, 1976
    Date of Patent: November 8, 1977
    Assignee: Phillips Petroleum Company
    Inventor: Charles L. Seefluth
  • Method forming an oriented article having a bead attached by a tapered stem
    Patent number: 4026984
    Abstract: The strength of the seal of an open end parison preform fabricated at orientation temperature is increased by forming a dependent bead within a closely adjacent longitudinal recess. In an alternate embodiment the appearance of seals is improved, and pin holes reduced by forming a dependent bead in a manner such that the longitudinal stem (web) connecting the bead flares outward adjacent a bottom wall of the article being molded.
    Type: Grant
    Filed: September 26, 1975
    Date of Patent: May 31, 1977
    Assignee: Phillips Petroleum Company
    Inventor: Charles L. Seefluth
  • Adjusting parison alignment by temperature control of picker finger
    Patent number: 3985850
    Abstract: An open end parison preform is heated to molding temperature preparatory to transfer to a molding station. The thus heated parison is grasped by a pair of opposed picker fingers and transferred into position over a neck forming plug. The relative temperature of the opposed picker fingers is controlled which effects the alignment of the bottom end of the parison over the plug.
    Type: Grant
    Filed: May 29, 1975
    Date of Patent: October 12, 1976
    Assignee: Phillips Petroleum Company
    Inventor: Charles L. Seefluth
  • Method of transferring and aligning parisons using clamping jaws with offset tines
    Patent number: 3959426
    Abstract: A method employing a parison transfer device which comprises a pair of opposed clamping jaws with offset tines disposed so as to extrude polymer laterally between said tines to form a flange at right angles to the axis of the parison so that on transfer the parison can be held securely so as to avoid wobbling.
    Type: Grant
    Filed: December 4, 1974
    Date of Patent: May 25, 1976
    Assignee: Phillips Petroleum Company
    Inventor: Charles L. Seefluth
  • Continuous process for producing, reheating, and blow molding parisons
    Patent number: 3950459
    Abstract: The process comprises heating a hollow thermoplastic parison to orientation temperature ranges by selectively applying radiant heat to at least three portions of the parison. The thus irradiated parison is passed to a molding zone, and therein subjected to a pressure differential sufficient to expand the parison into conformity with a molding zone cavity.
    Type: Grant
    Filed: February 11, 1975
    Date of Patent: April 13, 1976
    Assignee: Phillips Petroleum Company
    Inventor: Charles L. Seefluth