Patents by Inventor Henry J. Kazienko

Henry J. Kazienko 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).

  • Method of making a coupling for rigid pressure pipe
    Patent number: 4329193
    Abstract: A coupling comprises a body of fiber glass reinforced plastic which has a rubber sleeve embedded therein. The rubber sleeve is a one piece unit which includes specially shaped sealing gaskets on either end and has a rubber liner spanning the area between these sealing gaskets. This rubber sleeve is stretched onto a steel and plastic molding mandrel. This stretching places the rubber liner under tension which reduces the cross-sectional area of the liner and compensates for thermal expansion of the liner during curing. The mandrel/sleeve combination is rotated in order to wind a thermosetting resin impregnated fiber glass roving around the outer circumference of the mandrel/sleeve combination, thus embedding the sleeve in the fiber glass reinforced resin matrix. The thermosetting resin is cured at elevated temperatures, hardening into a rigid coupling with the embedded rubber sleeve integral therewith.
    Type: Grant
    Filed: March 31, 1980
    Date of Patent: May 11, 1982
    Assignee: Manville Service Corporation
    Inventors: John L. Sznopek, Charles Lostak, Robert W. Heisler, Joseph P. Ferraro, Henry J. Kazienko
  • Mandrel for making a coupling for rigid pressure pipe
    Patent number: 4319950
    Abstract: Mandrel for making a coupling which coupling comprises a body of fiber glass reinforced plastic which has a rubber sleeve embedded therein. The rubber sleeve is a one piece unit which includes specially shaped sealing gaskets on either end and has a rubber liner spanning the area between these sealing gaskets. This rubber sleeve is stretched onto a steel and plastic molding mandrel. This stretching places the rubber liner under tension which reduces the cross-sectional area of the liner and compensates for thermal expansion of the liner during curing. The mandrel/sleeve combination is rotated in order to wind a thermosetting resin impregnated fiber glass roving around the outer circumference of the mandrel/sleeve combination, thus embedding the sleeve in the fiber glass reinforced resin matrix. The thermosetting resin is cured at elevated temperatures, hardening into a rigid coupling with the embedded rubber sleeve integral therewith.
    Type: Grant
    Filed: March 31, 1980
    Date of Patent: March 16, 1982
    Assignee: Manville Service Corporation
    Inventors: John L. Sznopek, Charles Lostak, Robert W. Heisler, Joseph P. Ferraro, Henry J. Kazienko