Winding – tensioning – or guiding – Unidirectional winding and unwinding – Partial wrap around plural rotatable supports
Reexamination Certificate
2001-10-26
2003-12-30
Mansen, Michael R. (Department: 3654)
Winding, tensioning, or guiding
Unidirectional winding and unwinding
Partial wrap around plural rotatable supports
C242S419400, C226S097400
Reexamination Certificate
active
06669130
ABSTRACT:
BACKGROUND OF THE INVENTION
This invention relates generally to feeding string, more particularly to a method of and apparatus for precision feeding of string forward to apparatus in which string is utilized.
The invention is especially concerned with feeding string forward from a supply to apparatus in which predetermined lengths of string are utilized, such as a high speed stringer for attaching string to items.
The term “string” as used herein encompasses what is ordinarily regarded as “string” as well as flexible string-like strands.
BRIEF SUMMARY OF THE INVENTION
In general, the method of the invention feeds string forward from a supply. The method comprises entraining the string coming from the supply around at least one feed roll, driving the roll in the direction for feeding the string forward, subjecting the string to a force in the reverse direction upstream from the roll, and subjecting the string to a forwarding force downstream from the roll. Apparatus of the invention generally involves a feed roll, a motor for driving the feed roll in the direction for feeding the string forward, a retarder for subjecting the string to force in the reverse direction upstream from the roll for retarding its forward feed, and an accelerator for subjecting the string to a forwarding force downstream from the roll for exerting a pull on the string to tension the portion of the string between the retarder and the accelerator.
Other features will be in part apparent and in part pointed out hereinafter.
REFERENCES:
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patent: 2092188 (1982-08-01), None
Kimberly--Clark Worldwide, Inc.
Mansen Michael R.
Senniger Powers Leavitt & Roedel
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