SWITCH Russian patent published in 2002 - IPC

FIELD: electrical engineering; final-element position indicators for actuating mechanisms. SUBSTANCE: switch has first case accommodating cam; second case secured with first one that accommodates pushrod mounted for displacement and for engagement with reset spring and contacts; two additional reset springs; ball and bellows; cylindrical depression is provided on pushrod end; ball is mounted between bottom of this depression and cam; bellows is connected on one end with pushrod through sealed joint and on other, with first case; cam is mounted with its cone-face seating bore on shaft for turning; additional springs are mounted on shaft and pressed to cam on side of cone faces. EFFECT: enhanced reliability of switching operations at heavy forces applied by actuating mechanism. 1 dwg