Single-piece turbine rotor and pinion gear and manufacturing technique for same
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United States of America Patent
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Aug 15, 2006
Issued Date -
N/A
app pub date -
Dec 17, 2003
filing date -
Dec 17, 2003
priority date (Note) -
Expired
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Abstract
A power transfer assembly comprises a power turbine constructed of a nickel alloy; a gear shaft constructed of a low-carbon carburized gear material; and a transition portion between and welded to each of the power turbine and gear shaft. The nickel alloy may be welded to the transition portion by inertia welding, and the low-carbon carburized gear material may be welded to the transition portion by electron beam welding, for example. The power transfer assembly may be used in a microturbine engine, for example, to transfer rotation of a power turbine to an electric generator.
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