LIMIT SWITCH Russian patent published in 1994 - IPC

FIELD: electrical engineering. SUBSTANCE: limit switch has body manufactured from nonmagnetic material which houses contact groups in the form of microswitches with elements of instantaneous action. Rotary plate is installed in parallel to wall of body. Two permanent magnets are anchored on ends of rotary plate. Source of controlling magnetomotive force is located exterior to body for movement. Microswitches are installed in pairs for interaction with driving elements by means of rotary plate at boundary passing through position of dead center of operation of elements of instantaneous action. EFFECT: increased reliability and efficiency of limit switch. 1 dwg