Patents by Inventor Christian Caesar

Christian Caesar 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 for connecting thick-walled metal workpieces by welding
    Patent number: 8373083
    Abstract: The invention relates to a method for connecting thick-walled metal workpieces by welding. In order to create the weld joint, the cross-sections are provided with a maximum of three weld regions according to wall thickness, the welding being carried out by a combined use of welding methods: the first weld region (root) is welded by means of laser beam welding or hybrid laser-arc welding, the second weld region is welded by means of hybrid laser-arc welding, and the third weld region required occasionally depending on the thickness of the sheet metal is welded by means of hybrid laser-arc welding or simply arc welding. The invention also relates to a seam preparation corresponding to the respective welding method used.
    Type: Grant
    Filed: June 26, 2008
    Date of Patent: February 12, 2013
    Assignee: V & M Deutschland GmbH
    Inventors: Steffen Keitel, Jan Neubert, Wolfgang Scheller, Markus Liedtke, Christian Caesar
  • METHOD AND DEVICE FOR CONNECTING THICK-WALLED METAL WORKPIECES BY WELDING
    Publication number: 20100206850
    Abstract: The invention relates to a method for connecting thick-walled metal workpieces by welding. In order to create the weld joint, the cross-sections are provided with a maximum of three weld regions according to wall thickness, the welding being carried out by a combined use of welding methods: the first weld region (root) is welded by means of laser beam welding or hybrid laser-arc welding, the second weld region is welded by means of hybrid laser-arc welding, and the third weld region required occasionally depending on the thickness of the sheet metal is welded by means of hybrid laser-arc welding or simply arc welding. The invention also relates to a seam preparation corresponding to the respective welding method used.
    Type: Application
    Filed: June 26, 2008
    Publication date: August 19, 2010
    Applicant: V & M DEUTSCHLAND GMBH
    Inventors: Steffen Keitel, Jan Neubert, Wolfgang Scheller, Markus Liedtke, Christian Caesar
  • Manufacture of shaped articles of foamed olefin polymers
    Patent number: 4031179
    Abstract: Shaped articles are produced by heating and compressing particles of foamed olefin polymer containing crosslinked portions in molds, the pressure being reduced during compression in the mold.
    Type: Grant
    Filed: June 18, 1974
    Date of Patent: June 21, 1977
    Assignee: BASF Aktiengesellschaft
    Inventors: Hermann Tatzel, Wolfram Koegel, Gilbert Beck, Ludwig Zuern, Arndt Christian Caesar
  • Process for the manufacture of void-free polyolefin foam moldings
    Patent number: 3992501
    Abstract: Foam moldings of olefin polymers are prepared by heating, and pressing together, foamed particles of an olefin polymer, containing crosslinked constituents, in molds, a temperature gradient of from 0.5.degree. to 25.degree. C per cm of loose mass of particles being established in the mold, which has a gas-permeable wall on the lower-temperature side.
    Type: Grant
    Filed: June 18, 1974
    Date of Patent: November 16, 1976
    Assignee: BASF Aktiengesellschaft
    Inventors: Hermann Tatzel, Wolfram Koegel, Gilbert Beck, Ludwig Zuern, Arndt Christian Caesar