Piezoelectric devices for yarn control apparatus in a textile machine
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United States of America Patent
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Oct 31, 1995
Grant Date -
N/A
app pub date -
Jun 6, 1994
filing date -
Jul 3, 1992
priority date (Note) -
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Abstract
A traction member (22) is connected to a yarn (6) which is to be controlled. A coupling assembly (38) serves for coupling the traction member (22) to a lifting device (32). A coupling assembly (38) contains a link pin (40), which can reciprocate between a neutral position and a coupling engaged position, with two piezoelectric switching members (50, 52) which function respectively alternately as actuator and sensor being allocated to said link pin 40. This results not only in a particularly simple coupling construction, rather also in a monitoring of the switching function of the coupling, wherein switching errors and switching malfunctions can be avoided.
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