Patents by Inventor Karl-Heinz Pree

Karl-Heinz Pree 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).

  • Patent number: 12202647
    Abstract: A bung plug seal for bung containers, the bung plug seal having a bung plug for being disposed in a bung socket of the bung container, the bung plug having a plug depression for inserting a fitting tool, the plug depression having a depression bottom provided with at least one ventilation opening, and the bung plug being provided with a ventilation plug which is disposed in the plug depression and a thread bolt of which is accommodated in an internal thread of a receiving hole formed in the depression bottom and which has a lid disk provided with a handling unit and connected to the thread bolt for sealing the ventilation opening in a closed position of the ventilation plug.
    Type: Grant
    Filed: November 4, 2021
    Date of Patent: January 21, 2025
    Assignee: PROTECHNA S.A.
    Inventors: Karl-Heinz Pree, Bernd Klatt
  • Publication number: 20240182209
    Abstract: A bung plug seal for bung containers, the bung plug seal having a bung plug for being disposed in a bung socket of the bung container, the bung plug having a plug depression for inserting a fitting tool, the plug depression having a depression bottom provided with at least one ventilation opening, and the bung plug being provided with a ventilation plug which is disposed in the plug depression and a thread bolt of which is accommodated in an internal thread of a receiving hole formed in the depression bottom and which has a lid disk provided with a handling unit and connected to the thread bolt for sealing the ventilation opening in a closed position of the ventilation plug.
    Type: Application
    Filed: November 4, 2021
    Publication date: June 6, 2024
    Inventors: Karl-Heinz Pree, Bernd Klatt
  • Patent number: 10787294
    Abstract: The invention relates to bung plug (10) having an integrated pressure compensation means for arrangement in a container lid of a liquid container, the bung plug (10) having a valve housing (15) below a plug depression (12), the valve housing (15) being provided with air passage openings (39, 40) and having a receiving pin (16) arranged centrically in the valve housing (15) for arranging a valve diaphragm (17) whose diaphragm hub (18) is arranged on the receiving pin (16), a radially outward ring edge (19) of the valve diaphragm (17) being in contact with a ring shoulder (20) of the valve housing (15), the diaphragm hub (18) being arranged between a depression bottom (14) of the plug depression (12) and a lid hub (22) of a surge lid (21) arranged on the receiving pin (16) and provided with air passage openings (39, 40), a surge disk (32) being provided between the surge lid (21) and the valve diaphragm (17), wherein the surge disk (32) and the surge lid (21) are realized as a unit and the surge lid (21) has a
    Type: Grant
    Filed: October 25, 2016
    Date of Patent: September 29, 2020
    Assignee: PROTECHNA S.A.
    Inventor: Karl-Heinz Pree
  • Publication number: 20180319548
    Abstract: The invention relates to bung plug (10) having an integrated pressure compensation means for arrangement in a container lid of a liquid container, the bung plug (10) having a valve housing (15) below a plug depression (12), the valve housing (15) being provided with air passage openings (39, 40) and having a receiving pin (16) arranged centrically in the valve housing (15) for arranging a valve diaphragm (17) whose diaphragm hub (18) is arranged on the receiving pin (16), a radially outward ring edge (19) of the valve diaphragm (17) being in contact with a ring shoulder (20) of the valve housing (15), the diaphragm hub (18) being arranged between a depression bottom (14) of the plug depression (12) and a lid hub (22) of a surge lid (21) arranged on the receiving pin (16) and provided with air passage openings (39, 40), a surge disk (32) being provided between the surge lid (21) and the valve diaphragm (17), wherein the surge disk (32) and the surge lid (21) are realized as a unit and the surge lid (21) has a
    Type: Application
    Filed: October 25, 2016
    Publication date: November 8, 2018
    Inventor: Karl-Heinz Pree