Circuit breakers having interrupting contacts

Claim 1

A CIRCUIT BREAKER COMPRISING INTERRUPTING CONTACTS FOR OPERATING IN AN ENVELOPE FORMING A VACUUM, AT LEAST TWO SETS OF SUCH CONTACTS BEING ELECTRICALLY SERIES CONNECTED AND ENCLOSED IN AN INSULATOR FORMING SEPARATE ENVELOPES WHICH ARE EVACUATED, SEALED AND ALIGNED IN THE DIRECTION OF CONTACT OPENING, AN INTERMEDIATE ENCLOSURE CONNECTING SAID SEPARATE ENVELOPES BY BEING SEALED TO THE NEIGHBORING ENDS OF ADJACENT SEPARATE ENVELOPES, A MECHANISM FOR CAUSING OPERATION OF THE INTERRUPTING CONTACTS COMPRISING AN INSULATING ROD FOR EACH SAID ENVELOPE, EACH OF SAID RODS BEING SITUATED PARALLEL TO SAID DIRECTION OF CONTACT OPENING AND ENCLOSE AND SEALED IN A SEPARATE SEALED CHANNEL, SAID SEPARATE SEALED CHANNELS BEING FILLED WITH A MEDIUM OF AN INSULATING QUALITY SUBSTANTIALLY HIGHER THAN THAT OF AIR AND THUS SEALED TO PREVENT POLLUTION AND INGRESS OF HUMIDITY FROM THE OUTER ATMOSPHERE, EACH OF SAID SEPARATE ENVELOPES OF SAID INSULATOR INCLUDING A CYLINDRICAL HOLLOW THE OPPOSITE ENDS OF WHICH ARE CLOSED BY SEPARATE COVERS, AND EACH OF SAID SEPARATE SEALED CHANNELS BEING POSITIONED IN A WALL OF EACH ONE OF THE SAID INSULATORS AND PARALLEL TO SAID CYLINDRICAL HOLLOW.