Patent ID: 6189576
Filing Date: 2001-02-20
Classification: D03C

Abstract:
An apparatus for controlled moving of a warp thread by a punctuate compulsory guidance between three positions, namely a middle position, an upper position, and a lower position, the apparatus comprising:a pendulum which is pivotal about a pendulum axis to move between left and right positions, the pendulum including an electrical coil chargeable with a current, the pendulum configured to be connected with the warp thread; anda pair of stationary permanent magnets disposed adjacent the right position and the left position, respectively,wherein the pendulum is movable between the three positions and is in equilibrium in the three positions by forces between the electrical coil and the stationary permanent magnets, the middle position in equilibrium being produced when the electrical coil is current-less, the upper position in equilibrium being produced when the electrical coil carries a current in one polarity, the lower position in equilibrium being produced when the electrical coil carries a current in an opposite polarity.