Patents by Inventor Lisa Christiansen

Lisa Christiansen 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).

  • Helical spline forming
    Patent number: 9393604
    Abstract: A flow-forming machine and method for forming a final part having helical splines. The flow forming machine is provided with a stripper plate for removing the final part having the helical splines therein from the mandrel and a thrust bearing is located between the stripper plate and the final part during stripping of the final part from the mandrel to allow relative motion between the stripper plate and the final part to successfully strip the final part from the mandrel without damaging and while maintaining the integrity of the helical splines of the final part. The ejector driver and mandrel may be rotated in either direction to help in successfully stripping the final part from the mandrel.
    Type: Grant
    Filed: July 2, 2013
    Date of Patent: July 19, 2016
    Assignee: MAGNA POWERTRAIN INC.
    Inventors: Bahman Abbassian, Lisa Christiansen
  • HELICAL SPLINE FORMING
    Publication number: 20140007638
    Abstract: A flow-forming machine and method for forming a final part having helical splines. The flow forming machine is provided with a stripper plate for removing the final part having the helical splines therein from the mandrel and a thrust bearing is located between the stripper plate and the final part during stripping of the final part from the mandrel to allow relative motion between the stripper plate and the final part to successfully strip the final part from the mandrel without damaging and while maintaining the integrity of the helical splines of the final part. The ejector driver and mandrel may be rotated in either direction to help in successfully stripping the final part from the mandrel.
    Type: Application
    Filed: July 2, 2013
    Publication date: January 9, 2014
    Applicant: MAGNA POWERTRAIN OF AMERICA, INC.
    Inventors: Bahman Abbassian, Lisa Christiansen