Heating and cooling system

• US 3,170,508 A
• Filed: 12/18/1962
• Issued: 02/23/1965
• Est. Priority Date: 12/18/1962
• Status: Expired due to Term

• Current Assignee: Gilbert H. Avery
• Original Assignee: Gilbert H. Avery
• Inventors: Avery, Gilbert H.
• Application Number:
  US04/245,604
• Time in Patent Office: 798 Days
• US Class Current: 165/221
• CPC Class Codes: F24F 3/08 with separate supply and return lines for hot and cold heat-exchange fluids i.e. so-called "4-conduit" system

Claims

1. IN A HEATING AND COOLING SYSTEM, A SOURCE OF HEATING MEDIUM, A HEATING MEDIUM DELIVERY CONDUIT AND A HEATING MEDIUM RETURN CONDUIT RESPECTIVELY LEADING FROM AND LEADING TO SAID SOURCE OF HEATING MEDIUM, A SOURCE OF COOLING MEDIUM, A COOLING MEDIUM DELIVERY CONDUIT AND A COOLING MEDIUM RETURN CONDUIT RESPECTIVELY LEADING FROM AND LEADING TO SAID SOURCE OF COOLING MEDIUM, A COIL, MEANS INCLUDING PASSAGE MEANS BETWEEN SAID COIL AND SAID DELIVERY AND RETURN CONDUITS AND INCLUDING A PAIR OF THREE-WAY VALVE MEANS IN SAID PASSAGE MEANS RESPECTIVELY ADJACENT OPPOSITE ENDS OF SAID COIL FOR SELECTIVELY DIRECTING THE FLOW OF SAID HEATING MEDIUM FROM SAID HEATING MEDIUM DELIVERY CONDUIT THROUGH SAID COIL IN ONE DIRECTION AND INTO SAID HEATING MEDIUM RETURN CONDUIT AND DIRECTING THE FLOW OF SAID COOLING MEDIUM FROM SAID COOLING MEDIUM DELIVERY CONDUIT THROUGH SAID COIL IN THE OPPOSITE DIRECTION AND INTO SAID COOLING MEDIUM RETURN CONDUIT, A PAIR