Patents by Inventor Ralf A. Schellhaas

Ralf A. Schellhaas 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 reducing hard machining time of a constant velocity joint
    Patent number: 6557257
    Abstract: A method of reducing hard machining time, and correspondingly increasing hard machining tooling life, of a non plunging type constant velocity joint for use in reduced angle applications. The method comprises forming a recess having a larger formed radius in a portion of the ball track and cage track areas that is non-functional in low angle operations prior to heat treat hardening. The new process results in a significant reduction of approximately forty-five percent in the hard machining of the ball and cage track surfaces.
    Type: Grant
    Filed: November 30, 2000
    Date of Patent: May 6, 2003
    Assignee: Visteon Global Technologies, Inc.
    Inventors: Scott Johnson, Ralf A. Schellhaas, Richard L. Seidel
  • Method for reducing hard machining time of a constant velocity joint
    Publication number: 20020065138
    Abstract: A method of reducing hard machining time, and correspondingly increasing hard machining tooling life, of a non plunging type constant velocity joint for use in reduced angle applications. The method comprises forming a recess having a larger formed radius in a portion of the ball track and cage track areas that is non-functional in low angle operations prior to heat treat hardening. The new process results in a significant reduction of approximately forty-five percent in the hard machining of the ball and cage track surfaces.
    Type: Application
    Filed: November 30, 2000
    Publication date: May 30, 2002
    Inventors: Scott Johnson, Ralf A. Schellhaas, Richard L. Seidel