Sewing – Method of sewing – Material sensing
Reexamination Certificate
2011-08-02
2011-08-02
Worrell, Danny (Department: 3765)
Sewing
Method of sewing
Material sensing
C112S278000
Reexamination Certificate
active
07987801
ABSTRACT:
The present invention relates to a device and a method for monitoring a thread wound on a bobbin during operation in a sewing machine that reduces the expenditure on apparatus and production technology with increased monitoring reliability wherein at least three different marking states are provided in the area of the bobbin (3) and are coupled to an optical device (8) in such a manner that movement of the bobbin (3) produces a change in marking which can be detected in the optical device (8) which can be evaluated in a logic unit connected to the optical device (8), that the marking (10) in the area of the bobbin (3) comprises more than two states, wherein at least one state is defined by at least one true color (g, r, b) or a mixture of the primary colors.
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Brenner Martin
Ecker Andreas
Apex Juris, PLLC
Heims Tracy M.
RSG Rombold System GmbH & Co., KG
Worrell Danny
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