Electric heating – Inductive heating – Metal working
Reexamination Certificate
2005-04-26
2005-04-26
Leung, Philip H. (Department: 3742)
Electric heating
Inductive heating
Metal working
C219S634000, C219S651000, C219S670000, C219S675000, C148S567000, C266S129000
Reexamination Certificate
active
06884975
ABSTRACT:
A system and method inductively heats and stress relieves a weld joint area having a stress induced zone. A susceptor assembly is positioned over the stress induced zone. The susceptor assembly includes susceptor sheets manufactured to operate at different, preselected Curie temperatures. A housing is mounted over the susceptor assembly including an induction coil positioned adjacent to the susceptor assembly. An alternating electric current is applied to the induction coil. The alternating electric current causes the induction coil to generate a plurality of magnetic flux lines. The invention provides the advantage that the magnetic flux lines passing through the susceptor assembly heat the susceptor assembly providing localized and controlled temperature heat to the weld joint area to stress relieve the stress induced zone.
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Matsen Marc R.
Smith Terry L.
Harness & Dickey & Pierce P.L.C.
Leung Philip H.
The Boeing Company
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