BISTABLE SOLENOID FOR USE WITH A KNITTING MACHINE

摘要

A bistable solenoid for use with a knitting machine. The bistable solenoid includes an enclosure made of magnetic material which includes bearing surfaces at opposite ends. A plunger having a central region made of magnetic material and outer end regions made of non-magnetic material is movable within the enclosure for operation of a cam of a knitting machine. The movable plunger is controlled by axially aligned permanent magnets which are spaced from each other by a yoke. The permanent magnets are sandwiched between magnetizable coils which move the plunger toward the coil that is excited. The plunger is spaced radially from the coil's magnets and bearing so that very little wear is brought about during use in operating the cam of the knitting machine.