Metal deforming – By pulling workpiece through closed periphery die – And applying a 'pushing' force
Reexamination Certificate
2007-10-12
2009-11-24
Ross, Dana (Department: 3725)
Metal deforming
By pulling workpiece through closed periphery die
And applying a 'pushing' force
C072S287000, C072S290000
Reexamination Certificate
active
07621164
ABSTRACT:
The present invention involves cost effective, efficient systems and methods for sizing pipe. In an embodiment of the present invention, a pipe sizing system includes a die having an opening operable to size the pipe, a hydraulic cylinder having at least one rod attached thereto, the hydraulic cylinder and the at least one rod cooperating with each other to push the pipe through the die, and a receiver to guide the pipe as the pipe exits from the die.
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Chinese Office Action, Application No. 2005101132456, 8 pages, Sep. 21, 2007.
Fullerton Paul
Roden Nathan A.
Witt David R.
Baker & Botts L.L.P.
Ross Dana
Sullivan Debra M
United States Steel Corporation
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