Patents by Inventor Theresa M Lee

Theresa M Lee 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).

  • Publication number: 20140223982
    Abstract: A system and method for processing a formable metal panel. The method comprises pressing the formable metal panel between a first die and a second die of a first press, creating a pre-formed panel. The pre-formed panel is annealed with a heating element. An evaporative cooling gas is applied to at least one region of the pre-formed panel for rapid cooling. The evaporative cooling gas may comprise a gas mixture including carbon dioxide or nitrogen. The pre-formed panel is transferred from the first press to a second press for additional forming operations.
    Type: Application
    Filed: February 11, 2013
    Publication date: August 14, 2014
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventor: Theresa M. Lee
  • Patent number: 8561450
    Abstract: A system for annealing a formable panel includes a stamping press configured to pre-form the panel using a first die and a second die. The system also includes a transfer device configured to engage the pre-formed panel and transfer the panel from the stamping press. The transfer device includes a heating element configured to anneal the pre-formed panel. The heating element anneals the pre-formed panel in the stamping press after the first die is disengaged from the panel and while the panel is being supported by the second die. A method of processing a formable panel and a method of processing a pre-formed panel in a multi-stage stamping operation, each using the system, are also disclosed.
    Type: Grant
    Filed: March 11, 2011
    Date of Patent: October 22, 2013
    Assignee: GM Global Technology Operations LLC
    Inventors: Theresa M. Lee, John E. Carsley
  • Publication number: 20120227460
    Abstract: A system for annealing a formable panel includes a stamping press configured to pre-form the panel using a first die and a second die. The system also includes a transfer device configured to engage the pre-formed panel and transfer the panel from the stamping press. The transfer device includes a heating element configured to anneal the pre-formed panel. The heating element anneals the pre-formed panel in the stamping press after the first die is disengaged from the panel and while the panel is being supported by the second die. A method of processing a formable panel and a method of processing a pre-formed panel in a multi-stage stamping operation, each using the system, are also disclosed.
    Type: Application
    Filed: March 11, 2011
    Publication date: September 13, 2012
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Theresa M. Lee, John E. Carsley
  • Patent number: 8211251
    Abstract: A method of accomplishing precipitation hardening of a selected portion of an aluminum panel is disclosed herein. The method includes identifying at least one area of the aluminum panel that experiences thermal stress above a threshold value during a bake cycle, thereby identifying the selected portion. Prior to the bake cycle, the method further includes locally heating the selected portion at a predetermined temperature for a predetermined time sufficient to increase a local yield strength of the selected portion such that the increased local yield strength ranges from 150 MPa to 300 MPa.
    Type: Grant
    Filed: August 14, 2009
    Date of Patent: July 3, 2012
    Assignee: GM Global Technology Operations LLC
    Inventors: John E. Carsley, Chih-Cheng Hsu, Susan E. Hartfield-Wunsch, Theresa M Lee, James G. Schroth
  • Publication number: 20110036472
    Abstract: A method of accomplishing precipitation hardening of a selected portion of an aluminum panel is disclosed herein. The method includes identifying at least one area of the aluminum panel that experiences thermal stress above a threshold value during a bake cycle, thereby identifying the selected portion. Prior to the bake cycle, the method further includes locally heating the selected portion at a predetermined temperature for a predetermined time sufficient to increase a local yield strength of the selected portion such that the increased local yield strength ranges from 150 MPa to 300 MPa.
    Type: Application
    Filed: August 14, 2009
    Publication date: February 17, 2011
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
    Inventors: John E. Carsley, Chih-Cheng Hsu, Susan E. Hartfield-Wunsch, Theresa M. Lee, James G. Schroth