Metal working – Method of mechanical manufacture – Structural member making
Reexamination Certificate
2007-12-25
2007-12-25
Bryant, David P. (Department: 3726)
Metal working
Method of mechanical manufacture
Structural member making
C029S897100, C029S897000, C029S421100
Reexamination Certificate
active
11066614
ABSTRACT:
A method for manufacturing a lower body component for a vehicle is provided including forming a one-piece floor pan at least partially defining a vehicle passenger compartment and substantially extending longitudinally at least the entire length thereof, and forming a one piece reinforcement structural member for reinforcing the pan. The method also includes simultaneously forming the pan and one-piece reinforcement structural member by stacking a pair of weldable sheet metal blanks sufficiently close together to define a comon interface, positioning the stacked blanks between moveable profile forming dies, heating the dies so that the blanks reach a superplastic forming temperature, and plastically deforming the stacked blanks into a lower body component having the profile of the dies. The method also includes friction stir welding of the stacked blanks at the common interface.
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Chernoff Adrian B.
Kim Chongmin
Kleber Richard M.
Konopnicki Mark G.
Koshorek Stephen R.
Bryant David P.
GM Global Technology Operations Inc.
Koehler Christopher M
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