PERFECCIONAMIENTOS INTRODUCIDOS EN UN DISPOSITIVO PARA CON- TROLAR CIRCUITOS ELECTRICOS DE ACUERDO CON UNA CONDICION PERCIBIDA.

摘要

A control of the type having a bistable mechanism operable in accordance with condition responsive means to affect opening and closing of snap-acting switch means series connected to directly control an electrical operation including means for providing fail-safe operation of the control which assure that the snap-acting switch means is in an open or non-energizing position upon failure of the condition responsive means.