Transfer switch for tap changers for regulating transformers including a cylindrical insulating housing, a squirrel-cage contact-supporting structure and contact bridgesinsulatingly supported by contact bridge carriers

Claim 1

A TRANSFER SWITCH FOR TAP-CHANGERS FOR REGULATING TRANSFORMERS COMPRISING IN COMBINATION: (A) A CYLINDRICAL SWITCH HOUSING OF INSULATING MATERIAL; (B) A PLURALITY OF PAIRS OF FIXED CONTACTS INSIDE SAID HOUSING, EACH PAIR OF SAID PLURALITY OF PAIRS OF FIXED CONTACTS BEING ARRANGED SPACED FROM A CONTIGUOUS PAIR OF SAID PLURALITY OF PAIRS OF FIXED CONTACTS; (C) A PLURALITY OF CONTACT BRIDGES ARRANGED INSIDE OF SAID HOUSING, ECXTENDING IN A DIRECTION LONGITUDINALLY THEREOF AND EACH JUXTAPOSED TO ONE OF SAID PLURALITY OF PAIRS OF FIXED CONTACTS TO CONDUCTIVELY INTERCONNECT SAID ONE OF SAID PLURALITY OF PAIRS OF FIXED CONTACTS; (D) A PLURALITY OF CONTACT CARRIERS MOVABLY SUPPORTED INSIDE SAID HOUSING EACH SUPPORTING ONE OF SAID PLUINSIDE SAID HOUSING EACH SUPPORTING ONE OF SAID PLURALITY OF CONTACT BRIDGES, EACH OF SAID PLURALITY OF CONTACT CARRIERS DEFINING AN UPPER GROOVE AND A LOWER GROOVE ENGAGED BY ONE OF SAID PLURALITY OF CONTACT BRIDGES TO SUPPORT SAID ONE OF SAID PLURALITY OF CONTACT BRIDGES; (E) A PLURALITY OF SPRING MEANS EACH INTERPOSED BETWEEN ONE OF SAID PLURALITY OF CONTACT BRIDGES AND ONE OF SAID PLURALITY OF CONTACT CARRIERS BIASING EACH