Heat pump

Claim 1

IN A REVERSE CYCLE REFRIGERATION SYSTEM OPERABLE TO SELECTIVELY COOL AND HEAT AN ENCLOSURE, THE COMBINATION OF A REFRIGERATION SYSTEM COMPRISING; COMPRESSION MEANS, REVERSING MEANS, AN OUTDOOR COIL; REFRIGERANT METERING MEANS, AND AN INDOOR COIL CONNECTED IN REFRIGERANT FLOW RELATIONSHIP, FAN MEANS FOR PASSING AIR OVER SAID INDOOR COIL, COOLING CONTROL MEANS OPERABLE IN RESPONSE TO A FIRST PREDETERMINED ENCLOSURE CONDITION TO ENERGIZE SAID COMPRESSION MEANS AND FAN MEANS TO COOL, SAID COOLING CONTROL MEANS INCLUDING A FIRST CIRCUIT FOR ENERGIZING SAID COMPRESSION MEANS, MEANS OPERABLE IN RESPONSE TO A PREDETERMINED SYSTEM CONDITION INDICATIVE OF A FROSTED INDOOR COIL TO INTERRUPT SAID FIRST CIRCUIT TO DE-ENERGIZE SAID COMPRESSION MEANS TO DEFROST THE INDOOR COIL, HEATING CONTROL MEANS OPERABLE IN RESPONSE TO A SECOND PREDETERMINED ENCLOSURE CONDITION TO ENERGIZE SAID REVERSING MEANS, SAID COMPRESSION MEANS, AND SAID FAN MEANS TO HEAT, MEANS OPERABLE TO DE-ENERGIZE SAID REVERSING MEANS TO DEFROST THE OUTDOOR COIL, AND MEANS FOR RENDERING SAID INDOOR COIL DEFROST MEANS INEFFECTIVE DURING HEATING CYCLE OPERATION INCLUDING A SECOND CIRCUIT FOR ENERGIZING SAID COMPRESSION MEANS HAVING FIRST AND SECOND SWITCH CONTACTS, MEANS FOR CLOSING SAID FIRST SWITCH CONTACT IN RESPONSE TO ACTUATION OF SAID HEATING CONTROL MEANS, AND MEANS FOR CLOSING SAID SECOND SWITCH CONTACT IN RESPONSE TO ACTUATION OF SAID INDOOR COIL DEFROST MEANS.