Metal fusion bonding – Including means to provide heat by friction between...
Reexamination Certificate
2005-04-19
2008-08-26
Lorengo, Jerry A. (Department: 1793)
Metal fusion bonding
Including means to provide heat by friction between...
C228S112100
Reexamination Certificate
active
07416102
ABSTRACT:
A method of friction stir welding and a non-consumable multi-section faced retractable shoulderless variable penetration friction stir welding tool. The tool includes a substantially cylindrical body portion, a head portion, and a tip section, each integral to the tool. The body portion has a longitudinal axis about which it is rotable, a diameter, a sidewall substantially parallel to the longitudinal axis, a proximal end, and a distal end. The head portion is located at the distal end of the body portion. The head portion includes a multi-section face, having a first face section and a second face section, that converges to the tip section. The tool is retractable, reduces overheating, improves weld quality by reducing internal voids and lack of fusion, and facilitates variable penetration welds.
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Bernath Jeffrey J.
Fisher, Jr. James J.
Trapp Timothy J.
Dawsey David J.
Edison Welding Institute, Inc.
Gallagher Michael J.
Gallagher & Dawsey Co LPA
Lorengo Jerry A.
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