AUTOMATIC SWITCH Russian patent published in 2010 - IPC H01H77/10 

FIELD: electricity.

SUBSTANCE: automatic switch includes mobile contact holder with flexible link, mounted on joints in top part of additional bracket with roller bearing, bearing bracket with rotation axis coinciding with rotation axis of roller support, spring-loaded lock with shaped surface contacting roller bearing of additional bracket, electrodynamic device of contact kick force compensation, dynamic induction tripping device including inducer, rod and electroconductive non-magnetic disc. Switch features additional lock and U-shaped ferromagnetic insert, and tripping device inducer is made in the form of cylindrical ring cut by through slit along radius, with parallel ends and taps from cylinder side surface. Additional lock is spring-loaded with separate spring, is mounted parallel to main lock at the same rotation axis and features similar shaped surface contacting roller bearing. Also additional lock interacts with dynamic induction tripping device which carries ferromagnetic insert on its rod opposite to free end of cylindrical ring.

EFFECT: enhanced limit switching capacity due to current limitation.

8 dwg