TWO-POSITION ELECTROMAGNET Russian patent published in 2006 - IPC H01F7/08 H01F7/16 

FIELD: electrical engineering; operating mechanisms of switches including high-voltage vacuum switches.

SUBSTANCE: fixed part of two-position electromagnet has coaxially disposed parts (cylindrical core with circular projection in central part and circular case). Fixed part components are joined together by means of nonmagnetic components placed in gap between circular projection of core and case; these components only partially fill the gap in azimuth. Coils are disposed on core between core and case on both ends of circular projection; permanent magnets are disposed beyond gap portion free from nonmagnetic components between circular projection of core and case; movable part has nonmagnetic rod disposed in core hole and two disk-shaped armatures secured on rod ends.

EFFECT: enhanced holding force of magnetic-circuit moving part when coils are de-energized.

1 cl, 2 dwg