Patents by Inventor Friedrich Wilhelm Elhaus

Friedrich Wilhelm Elhaus 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).

  • Apparatus for pulling extrusions from a press
    Patent number: 5031437
    Abstract: An apparatus for pulling extrusions from a press, comprising two pullers (5,6) which alternatingly pull the extruded product (3) along an extrusion path and each are equipped with a separator (16) that moves along, and further comprising a cross-transfer conveyor (8) which conveys the extruded products upon separation in a direction transversely of the extrusion direction (F) for further processing, is characterized in that puller heads of the pullers (5,6) are designed to be movable transversely out of the extrusion path (2) for lateral shifting of the clamped extruded product by a cross-drive.
    Type: Grant
    Filed: May 23, 1990
    Date of Patent: July 16, 1991
    Assignee: Elhaus Industrieanlagen GmbH
    Inventors: Friedrich-Wilhelm Elhaus, Eckhard Makel
  • Method for heat treatment of material to be worked on, especially of aluminium or magnesium alloys
    Patent number: 3953247
    Abstract: For heat treatment metal pieces like billets, ingots, bars and the like are pre-heated by direct flame impingement in a pre-heating furnace and then transfered into a holding furnace with forced hot gas circulation where they are held for the time required at the desired heat treatment temperature.
    Type: Grant
    Filed: November 20, 1973
    Date of Patent: April 27, 1976
    Assignees: Prolizenz AG, Friedrich Wilhelm Elhaus
    Inventors: Friedrich Wilhelm Elhaus, Bernhard Hilge