Metal fusion bonding – Process – Using dynamic frictional energy
Reexamination Certificate
2005-04-19
2005-04-19
Edmondson, Lynne R. (Department: 1725)
Metal fusion bonding
Process
Using dynamic frictional energy
C228S002100
Reexamination Certificate
active
06880743
ABSTRACT:
The average strength of a pull plug weld is increased and weak bonding eliminated by providing a dual included angle at the top one third of the pull plug. Plugs using the included angle of the present invention had consistent high strength, no weak bonds and were substantially defect free. The dual angle of the pull plug body increases the heat and pressure of the weld in the region of the top one third of the plug. This allows the plug to form a tight high quality solid state bond. The dual angle was found to be successful in elimination of defects on both small and large plugs.
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Cantrell Mark A.
Coletta Edmond R.
Edmondson Lynne R.
Garvey, Jr. Charles C.
Garvey, Smith, Nehrbass & Doody, L.L.C.
Lockheed Martin Corporation
Nehrbass Seth M.
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