Metal working – Method of mechanical manufacture – Muffler – manifold or exhaust pipe making
Reexamination Certificate
2005-09-02
2009-10-27
Hong, John C (Department: 3726)
Metal working
Method of mechanical manufacture
Muffler, manifold or exhaust pipe making
Reexamination Certificate
active
07607225
ABSTRACT:
A method for the direct manufacture of aerospace duct elements is provided comprising executing a single build run on a build chamber using direct fabrication technology to generate at least one duct section. The at least one duct section is generated by forming a plurality of partial cylinder duct segments orientated within the build chamber in a nested arrangement during the single build run, and assembling at least two of the partial cylinder duct segments to form the duct section. During the single build run a plurality of stiffening protrusions are formed on each of the partial cylinder duct segments to improve duct rigidity and to modify flow through the duct section.
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Huskamp Christopher S.
Slaughter Victor Blakemore
Hong John C
Ostrager Chong & Flaherty & Broitman P.C.
The Boeing Company
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