Patents by Inventor Eugene V. Stack

Eugene V. Stack 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).

  • Flangeless pipe joint
    Patent number: 5634672
    Abstract: A flangeless pipe joint including lined pipes with the end section of the outer pipe spaced radially outwardly from the liner and insulating material filling the space between the end sections of pipe and liners. The ends of the liners are sealed to each other and the outer pipe ends are joined by an outer sleeve.
    Type: Grant
    Filed: April 12, 1995
    Date of Patent: June 3, 1997
    Assignee: The Dow Chemical Company
    Inventors: Eugene V. Stack, Michael F. Jeglic
  • Pipe aligning apparatus
    Patent number: 4872709
    Abstract: A toggle clamp is fitted with opposed pipe flange engaging jaws and provides a rapid means of alignment and positioning of flanged pipe during assembly; particularly suited for use with split "V" clamp joints.
    Type: Grant
    Filed: May 2, 1983
    Date of Patent: October 10, 1989
    Assignee: The Dow Chemical Company
    Inventor: Eugene V. Stack
  • Plastic lined diaphragm valve
    Patent number: 4538638
    Abstract: Synthetic resinous thermoplastic lines in a diaphragm valve are stabilized against movement by extending the lines into recesses in the bonnet receiving face of the valve body.
    Type: Grant
    Filed: March 8, 1984
    Date of Patent: September 3, 1985
    Assignee: The Dow Chemical Company
    Inventor: Eugene V. Stack
  • Method for the extrusion of tetrafluoroethylene polymer tubes
    Patent number: 4430282
    Abstract: Tetrafluoroethylene polymer tubes are ram extruded. Desirable quality tubes are obtained by positioning an insert between ram and mandrel to maintain the ram and mandrel concentric.
    Type: Grant
    Filed: May 17, 1982
    Date of Patent: February 7, 1984
    Assignee: The Dow Chemical Company
    Inventor: Eugene V. Stack
  • Method for the extrusion of tetrafluoroethylene polymer tubes
    Patent number: 4430283
    Abstract: Tetrafluoroethylene polymer tubes suitable for the preparation of lined pipe are prepared by ram extrusion wherein the tube is extruded above the sinter temperature and cooled below its crystalline melting point while radially unsupported to provide a tube of improved dimensional stability under thermal cycling.
    Type: Grant
    Filed: May 17, 1982
    Date of Patent: February 7, 1984
    Assignee: The Dow Chemical Company
    Inventors: Edward L. Burnett, Eugene V. Stack
  • Method for the extrusion of tetrafluoroethylene polymer tubes
    Patent number: 4350653
    Abstract: Tetrafluoroethylene polymer tubes are ram extruded. Desirable quality tubes are obtained by controlling the back pressure on the mandrel as the ram forces polymer to be fabricated into the barrel of the extruder.
    Type: Grant
    Filed: January 23, 1981
    Date of Patent: September 21, 1982
    Assignee: The Dow Chemical Company
    Inventors: Edward L. Burnett, Eugene V. Stack
  • Method for the take-away of vertically extruded synthetic resinous tubes
    Patent number: 4348345
    Abstract: Tetrafluoroethylene polymer is downwardly extruded employing variable counterweight to provide tube of improved physical properties.
    Type: Grant
    Filed: January 23, 1981
    Date of Patent: September 7, 1982
    Assignee: The Dow Chemical Company
    Inventors: Edward L. Burnett, Eugene V. Stack
  • Manufacture of polytetrafluoroethylene tubes
    Patent number: 4203938
    Abstract: Polytetrafluoroethylene tubes are prepared by isostatic molding of polytetrafluoroethylene powder over a cylindrical mandral at a temperature below about 19.degree. C. The compacted preform and mandrel are then warmed to a temperature above about 19.degree. C. and the preform removed from the mandrel. Sticking of the preform to the mandrel is avoided.
    Type: Grant
    Filed: July 6, 1976
    Date of Patent: May 20, 1980
    Assignee: The Dow Chemical Company
    Inventors: Edward L. Burnett, Eugene V. Stack