Patents by Inventor Mike Mircea Ghiran

Mike Mircea Ghiran 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 and apparatus for hydrotrimming and hydroshearing
    Patent number: 5941112
    Abstract: A tubular member is manufactured in a hydroforming and hydroshearing apparatus. A substantially right circular cylindrical workpiece is placed in a die and pressurized to hydroform a substantially rectangular tubular product. The workpiece is presheared during the pressurization period and is fully sheared during the withdrawal of a plurality of plunger members while the internal pressure is maintained. The plunger members are positioned in the die by respective power cylinders which control the withdrawal thereof.
    Type: Grant
    Filed: November 23, 1998
    Date of Patent: August 24, 1999
    Assignee: General Motors Corporation
    Inventors: Mike Mircea Ghiran, Sanjay Mahasukhlal Shah, Reginald Clark Joyner