Patents by Inventor Elizabeth T. Hetrick

Elizabeth T. Hetrick 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).

  • Resistance spot weld electrode dresser
    Patent number: 8920218
    Abstract: An electrode dresser is provided. The electrode dresser includes a face cutting segment having a top surface and a face rake surface. The top surface intersects the face rake surface and forms a face cutting edge. The face cutting edge is configured to remove deposits located on a face of an electrode. The face rake surface forms a face rake angle with a line generally perpendicular to the top surface. A side cutting segment extends from the face cutting segment and has a top surface and a side cutting surface. The top surface intersects the side cutting surface thereby forming a side cutting edge. The side cutting edge is configured to dress a distorted tapered side of an electrode tip. The side cutting surface forms a side rake angle with a line perpendicular to the top surface. The face rake angle is different from the side rake angle.
    Type: Grant
    Filed: July 11, 2012
    Date of Patent: December 30, 2014
    Assignee: Ford Global Technologies, LLC
    Inventors: William C. Moision, Elizabeth T. Hetrick
  • RESISTANCE SPOT WELD ELECTRODE DRESSER
    Publication number: 20140013869
    Abstract: An electrode dresser is provided. The electrode dresser includes a face cutting segment having a top surface and a face rake surface. The top surface intersects the face rake surface and forms a face cutting edge. The face cutting edge is configured to remove deposits located on a face of an electrode. The face rake surface forms a face rake angle with a line generally perpendicular to the top surface. A side cutting segment extends from the face cutting segment and has a top surface and a side cutting surface. The top surface intersects the side cutting surface thereby forming a side cutting edge. The side cutting edge is configured to dress a distorted tapered side of an electrode tip. The side cutting surface forms a side rake angle with a line perpendicular to the top surface. The face rake angle is different from the side rake angle.
    Type: Application
    Filed: July 11, 2012
    Publication date: January 16, 2014
    Applicant: FORD GLOBAL TECHNOLOGIES, LLC
    Inventors: William C. Moision, Elizabeth T. Hetrick
  • Ultrasonic welding apparatus
    Patent number: 7748590
    Abstract: An ultrasonic welding apparatus having an extractable sonotrode. The sonotrode having a non-threaded outer peripheral surface and a tapered mating surface that meets with a correspondingly tapered aperture formed in the end of the reed of the ultrasonic welding apparatus. In the preferred embodiment the ultrasonic welding apparatus includes a sonotrode removal mechanism for extracting the sonotrode from the reed.
    Type: Grant
    Filed: May 16, 2005
    Date of Patent: July 6, 2010
    Assignees: Ford Global Technologies, LLC, Jaguar Cars Limited
    Inventors: Larry Reatherford, Elizabeth T. Hetrick, Daniel E. Wilkosz, Jan Skogsmo, Joseph Walsh