Electric switch apparatus

Claim 1

A CIRCUIT CONTROLLING APPARATUS, COMPRISING A FRAME, AN ELECTROMAGNET HAVING AN ELECTROMAGNETICALLY RESPONSIVE MOVABLE ELEMENT POSITIONED ON THE FRAME, MEANS FOR ENERGIZING THE ELECTROMAGNET CONNECTED THERETO, A YOKE SECURED TO THE MOVABLE ELEMENT OF THE ELECTROMAGNET AND MOVABLE THEREWITH ON THE FRAME IN RESPONSE TO THE ENERGIZATION OF THE ELECTROMAGNET, A POLE UNIT SEPARABLY CONNECTED TO THE FRAME AS A UNITARY ELEMENT, THE POLE UNIT BEING SEPARABLE FROM THE CONNECTABLE TO THE FRAME WITHOUT THE NECESSITY OF DISASSEMBLING OR INTERFERING WITH THE OTHER ELEMENTS OF THE CIRCUIT CONTROLLING APPARATUS, THE POLE UNIT INCLUDING A GENERALLY STATIONARY CONTACT, A MOVABLE CONTACT AND MEANS FOR MAKING AND BREAKING THE CONTACTS, A PORTION OF THE YOKE BEING ENGAGEABLE WITH THE MAKING AND BREAKING MEANS OF THE POLE UNIT, THE MOVABLE CONTACT OF THE POLE UNIT BEING ACTUABLE IN RESPONSE TO THE MOVEMENT OF THE YOKE TO ASSUME A POSITION WITH RESPECT TO THE STATIONARY CONTACT, AND MEANS FOR SEPARABLY CONNECTING THE POLE UNIT IN A CIRCUIT WHEREBY THE CIRCUIT MAY BE COMPLETED OR BROKEN THROUGH THE POLE UNIT BY ACTUATION OF THE YOKE.