Patents by Inventor Dietmar Gerwig

Dietmar Gerwig 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).

  • Feed block unit, feed system and control device for a pressure die-casting machine
    Patent number: 8302660
    Abstract: A feed block unit for a hot-runner feed system of a pressure die-casting machine includes a block body in which is incorporated at least one melt-conveying channel running out of the block body by way of a sprue orifice close to the gate, and a heating system, integrated into the block body, for the at least one melt-conveying channel. The feed block unit is designed as a structural unit which is insertable independently into a respective casting mold, and/or the heating system integrated therein includes at least a first heating device for supply channel heating and a second heating device, which can be controlled independently of the first heating device, for sprue channel heating. With this modular hot-runner feed system, individual temperature profiles can be predetermined and set for the respective feed block unit.
    Type: Grant
    Filed: December 16, 2011
    Date of Patent: November 6, 2012
    Assignee: Oskar Frech GmbH + Co. KG
    Inventors: Norbert Erhard, Dietmar Gerwig, Herbert Trebes
  • Feed Block Unit, Feed System and Control Device for a Pressure Die-Casting Machine
    Publication number: 20120145352
    Abstract: A feed block unit for a hot-runner feed system of a pressure die-casting machine includes a block body in which is incorporated at least one melt-conveying channel running out of the block body by way of a sprue orifice close to the gate, and a heating system, integrated into the block body, for the at least one melt-conveying channel. The feed block unit is designed as a structural unit which is insertable independently into a respective casting mould, and/or the heating system integrated therein includes at least a first heating device for supply channel heating and a second heating device, which can be controlled independently of the first heating device, for sprue channel heating. With this modular hot-runner feed system, individual temperature profiles can be predetermined and set for the respective feed block unit.
    Type: Application
    Filed: December 16, 2011
    Publication date: June 14, 2012
    Applicant: Oskar Frech GmbH + Co. KG
    Inventors: Norbert Erhard, Dietmar Gerwig, Herbert Trebes
  • Feed back unit, feed system and control device for a pressure die-casting machine
    Patent number: 8104529
    Abstract: A feed block unit for a hot-runner feed system of a pressure die-casting machine includes a block body in which is incorporated at least one melt-conveying channel running out of the block body by way of a sprue orifice close to the gate, and a heating system, integrated into the block body, for the at least one melt-conveying channel. The feed block unit is designed as a structural unit which is insertable independently into a respective casting mold, and/or the heating system integrated therein includes at least a first heating device for supply channel heating and a second heating device, which can be controlled independently of the first heating device, for sprue channel heating. With this modular hot-runner feed system, individual temperature profiles can be predetermined and set for the respective feed block unit.
    Type: Grant
    Filed: May 23, 2008
    Date of Patent: January 31, 2012
    Assignee: Oskar Frech GmbH & Co. KG
    Inventors: Norbert Erhard, Dietmar Gerwig, Herbert Trebes
  • Feed Back Unit, Feed System and Control Device for a Pressure Die-Casting Machine
    Publication number: 20080289791
    Abstract: A feed block unit for a hot-runner feed system of a pressure die-casting machine includes a block body in which is incorporated at least one melt-conveying channel running out of the block body by way of a sprue orifice close to the gate, and a heating system, integrated into the block body, for the at least one melt-conveying channel. The feed block unit is designed as a structural unit which is insertable independently into a respective casting mould, and/or the heating system integrated therein includes at least a first heating device for supply channel heating and a second heating device, which can be controlled independently of the first heating device, for sprue channel heating. With this modular hot-runner feed system, individual temperature profiles can be predetermined and set for the respective feed block unit.
    Type: Application
    Filed: May 23, 2008
    Publication date: November 27, 2008
    Applicant: Oskar Frech GmbH & Co. KG
    Inventors: Norbert ERHARD, Dietmar GERWIG, Herbert TREBES