Patents by Inventor Claudia Berkenhoff

Claudia Berkenhoff 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: 8813360
    Abstract: In a method for beam welding on components with a laser beam or electron beam generated by a beam source, the heat treatment of the welded component required to remove stresses is integrated into the welding process. In a work cycle combined with the welding process, a regulated heat supply to a selected region takes place, according to its residual heat resulting from the welding process and the predicted stresses in that region, using the residual heat remaining from the welding process following the welding process from the same or other beam source(s). The welding region is cooled in a controlled manner, so that welded components which are likely to be subject to high stress in use, provided for example for a aircraft engine, can be made available without inherent stresses and with the desired microstructure in a single—combined—work step.
    Type: Grant
    Filed: October 6, 2011
    Date of Patent: August 26, 2014
    Assignees: Rolls-Royce PLC, Rolls-Royce Deutschland Ltd & Co KG
    Inventors: Daniel Clark, Claudia Berkenhoff, Claus T Haubold
  • Patent number: 8677621
    Abstract: With a method for the repair of compressor rotors designed in blisk technology the damaged stage is severed from the rotor, and a new blisk is joined to the rotor by electron-beam welding. For stress relieving the rotor is subjected to local thermal treatment by means of a current produced in the weld area by electro-magnetic induction.
    Type: Grant
    Filed: July 16, 2007
    Date of Patent: March 25, 2014
    Assignee: Rolls-Royce Deutschland Ltd & Co KG
    Inventors: Thomas Haubold, Claudia Berkenhoff
  • Publication number: 20120097645
    Abstract: In a method for beam welding on components with a laser beam or electron beam generated by a beam source, the heat treatment of the welded component required to remove stresses is integrated into the welding process. In a work cycle combined with the welding process, a regulated heat supply to a selected region takes place, according to its residual heat resulting from the welding process and the predicted stresses in that region, using the residual heat remaining from the welding process following the welding process from the same or other beam source(s). The welding region is cooled in a controlled manner, so that welded components which are likely to be subject to high stress in use, provided for example for a aircraft engine, can be made available without inherent stresses and with the desired microstructure in a single—combined—work step.
    Type: Application
    Filed: October 6, 2011
    Publication date: April 26, 2012
    Applicants: ROLLS-ROYCE DEUTSCHLAND AND CO KG, ROLLS-ROYCE PLC
    Inventors: Daniel CLARK, Claudia BERKENHOFF, Claus T. HAUBOLD
  • Publication number: 20080040924
    Abstract: With a method for the repair of compressor rotors designed in blisk technology the damaged stage is severed from the rotor, and a new blisk is joined to the rotor by electron-beam welding. For stress relieving the rotor is subjected to local thermal treatment by means of a current produced in the weld area by electro-magnetic induction.
    Type: Application
    Filed: July 16, 2007
    Publication date: February 21, 2008
    Inventors: Thomas Haubold, Claudia Berkenhoff