Patents by Inventor Darrell W Rebman

Darrell W Rebman 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).

  • Internal mandrel and method
    Patent number: 8631671
    Abstract: A method and system for forming a part from a workpiece including a hollow portion, using a mandrel and a conventional press such as a stamping press includes filling the hollow portion of the workpiece with a mandrel material and transforming the mandrel material to form a mandrel. The mandrel material is removable from the formed part and may be recycled to form a mandrel for another workpiece.
    Type: Grant
    Filed: April 14, 2011
    Date of Patent: January 21, 2014
    Assignee: GM Global Technology Operations LLC
    Inventors: Paul E. Krajewski, Michael H. Lovell, Tiffanie E. Coe, Terry A. Kent, Kevin R. Marks, William R. Rodgers, Howard William Cox, William Parker, Darrell W. Rebman, John Collins
  • INTERNAL MANDREL AND METHOD
    Publication number: 20120260709
    Abstract: A method and system for forming a part from a workpiece including a hollow portion, using a mandrel and a conventional press such as a stamping press includes filling the hollow portion of the workpiece with a mandrel material and transforming the mandrel material to form a mandrel. The mandrel material is removable from the formed part and may be recycled to form a mandrel for another workpiece.
    Type: Application
    Filed: April 14, 2011
    Publication date: October 18, 2012
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Paul E. Krajewski, Michael H. Lovell, Tiffanie E. Coe, Terry A. Kent, Kevin R. Marks, William R. Rodgers, Howard William Cox, William Parker, Darrell W. Rebman, John Collins
  • Tool for and method of forming at tapped hole in a single pass
    Patent number: 8220301
    Abstract: A tool adapted to form and method of forming a tapped hole within a workpiece in a single pass, includes a piercing section operable to punch a pilot hole in and produce a slug attached to the workpiece, and a tapping section operable to form a female thread along the periphery of the hole, and more preferably, an extruding section operable to push workpiece material away from the exterior surface defined thereby, an expanding section operable to expand the diameter of the hole, a sealing section operable to seal the hole during a hydroforming process, and a burnishing section operable to further expand and treat the periphery of the hole prior to tapping.
    Type: Grant
    Filed: July 13, 2008
    Date of Patent: July 17, 2012
    Assignee: GM Global Technology Operations LLC
    Inventors: Mike M. Ghiran, Spyros P. Mellas, David H. Shea, Thomas W. McClure, Darrell W Rebman
  • TOOL FOR AND METHOD OF FORMING AT TAPPED HOLE IN A SINGLE PASS
    Publication number: 20100008737
    Abstract: A tool adapted to form and method of forming a tapped hole within a workpiece in a single pass, includes a piercing section operable to punch a pilot hole in and produce a slug attached to the workpiece, and a tapping section operable to form a female thread along the periphery of the hole, and more preferably, an extruding section operable to push workpiece material away from the exterior surface defined thereby, an expanding section operable to expand the diameter of the hole, a sealing section operable to seal the hole during a hydroforming process, and a burnishing section operable to further expand and treat the periphery of the hole prior to tapping.
    Type: Application
    Filed: July 13, 2008
    Publication date: January 14, 2010
    Applicant: GM Global Technology Operations, INC.
    Inventors: MIKE M. GHIRAN, Spyros P. Mellas, David H. Shea, Thomas W. McClure, Darrell W Rebman