Advancing material of indeterminate length – By orbitally traveling material-engaging surface – With drive means
Reexamination Certificate
2005-02-08
2005-02-08
Matecki, Kathy (Department: 3654)
Advancing material of indeterminate length
By orbitally traveling material-engaging surface
With drive means
C226S118100, C226S045000, C226S108000, C242S418100
Reexamination Certificate
active
06851593
ABSTRACT:
A system and method for controlling the strain of a web material supplied to a machine by adjusting a tension force applied to the web material. An operator defines a target web strain via an input device. A speed sensor senses the speed of the web material supplied to the machine at a first position and a second position and generates a speed signal representative of the difference. A tension sensor senses a tension force applied to the web prior to the first position and after the first position and generates a tension signal representative of the difference. A control system calculates web strain as a function of the tension signal and speed signal, and compares the calculated strain with the target web strain and generates a speed control signal as a function of the comparison. The feed device is responsive to the speed control signal for adjusting a speed differential of the web to adjust tension force applied to the web.
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International Search Report for PCT/US 03/20512 dated Nov. 3, 2003, 4 pgs.
Bett Thomas Arthur
Ungpiyakul Tanakon
Weber Paul A.
Kimberly--Clark Worldwide, Inc.
Langdon Evan H
Matecki Kathy
Senniger Powers
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