Drafting arrangement with feedback drive groups
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United States of America Patent
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Sep 28, 1993
Issued Date -
N/A
app pub date -
May 20, 1992
filing date -
Jul 31, 1989
priority date (Note) -
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Abstract
A draw frame with a main control for a drafting arrangement having at least one independent drive group for at least one drafting zone. Each independent drive group has an auxiliary closed loop control system having a controller. Fiber slivers are drawn through the drafting arrangement through the drafting zones. When the control the range of a certain controller is exceeded, a nominal adjustment of at least one drive group is effected through a control connection.
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