Metal working – Method of mechanical manufacture – Gas and water specific plumbing component making
Reexamination Certificate
2006-08-29
2006-08-29
Carter, Monica S. (Department: 3722)
Metal working
Method of mechanical manufacture
Gas and water specific plumbing component making
C029S002100, C029S03300H, C029S890030, C029S890140, C029S890144, C029S890149
Reexamination Certificate
active
07096585
ABSTRACT:
An apparatus and method for forming a duct member having a plurality of adjustable sections which are rotatable relative to one another. The apparatus and method causes relative rotation between individual sections during the manufacturing process, to form a completed duct member in an automated process utilizing a rotating head assembly comprising a plurality of engagement members extendable radially outward of the rotating head body in an engagement position and retractable radially inward to a disengagement position. Accordingly, a 90 degree adjustable elbow can be produced in its 90 degree elbow configuration without requiring the machine operator to manually adjust the adjustable sections.
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Iowa Precision, “Adjust-A-Matic Automatic Elbow Machine—Operator's Manual,” 23 pages, (Sep. 19, 1994).
Iowa Precision, “Ajust-A-Matic”, printed from the Internet, http://www.iowaprecision.com/p6.htm, 1 page, (Mar. 3, 1999).
Carter Monica S.
Clark Robert J.
Cleveland Tool & Machine, Inc.
Gates Eric A.
Hahn Loeser & Parks LLP
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