Metal working – Method of mechanical manufacture – Structural member making
Reexamination Certificate
2005-07-05
2005-07-05
Luu, Teri Pham (Department: 3644)
Metal working
Method of mechanical manufacture
Structural member making
C029S897312
Reexamination Certificate
active
06912787
ABSTRACT:
A method of forming a joist assembly including the steps of forming a top chord, forming a bottom chord, bending a tubular member into a serpentine configuration, positioning an upper bent portion of the tubular member into the top chord, positioning a lower bent portion of the tubular member into the bottom chord, and welding the tubular member to the top chord and to the bottom chord. The top and bottom chords are cold formed of a single length of generally rectangular tubular material.
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Conrad Don M.
Norman Steve R.
Ruble Ray C.
Sparks Lee A.
Thomas Steven J.
Harrison & Egbert
Luu Teri Pham
Nguyen T.
Varco Pruden Technologies, Inc.
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