Thread clamp for a rapier head
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United States of America Patent
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-
Jun 9, 2009
Grant Date -
Dec 20, 2007
app pub date -
Jun 11, 2007
filing date -
Jun 16, 2006
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A thread clamp for a rapier head (1) is presented which contains a clamping part (4) for firmly clamping a weft thread (3) and an actuator (5) for moving the clamping part (4). The actuator (5) includes a ferromagnetic core (12), an armature (11) and at least one winding (13) which is arranged on the core or armature in order to produce a magnetic field in the latter and to move the armature and the clamping part, which is operatively connected to the latter, with the core (12) having two limbs (12.1, 12.2) between which the armature (11) is movably arranged, and with each limb being provided with a permanent magnet (14.1, 14.2) in order to hold the armature at one of the two rest positions in the current-free state of the winding.
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