Air conditioning systems

• US 3,177,676 A
• Filed: 03/27/1964
• Issued: 04/13/1965
• Est. Priority Date: 04/10/1963
• Status: Expired due to Term

• Current Assignee: Noel Abrahams
• Original Assignee: Noel Abrahams
• Inventors: Abrahams, Noel
• Application Number:
  US04/355,509
• Time in Patent Office: 382 Days
• US Class Current: 62/172
• CPC Class Codes: B64D 13/06 the air being conditioned pressurising B64D13/02

Claims

1. IN AN AIR CONDITIONING SYSTEM FOR AN AIRCRAFT, A FIRST TURBINE AND A SECOND TURBINE, A HEAT EXCHANGER, FIRST PASSAGE MEANS FOR CONNECTING THE INLETS OF SAID FIRST AND SECOND TURBINES THROUGH SAID HEAT EXCHANGER TO A SOURCE OF PRESSURIZED AIR, SECOND PASSAGE MEANS FOR CONNECTING THE OUTLETS OF SAID FIRST AND SECOND TURBINES TO AT LEAST ONE SPACE TO BE COOLED, THIRD PASSAGE MEANS FOR CONNECTING THE OUTLET OF SAID FIRST TURBINE TO THE INLET OF SAID SECOND TURBINE, VALVE MEANS IN SAID FIRST PASSAGE MEANS FOR SELECTIVELY CLOSING OFF THE INLET OF SAID SECOND TURBINE FROM THE SOURCE OF PRESSURIZED AIR, VALVE MEANS IN SAID SECOND PASSAGE MEANS FOR SELECTIVELY CLOSING OFF THE OUTLET OF SAID FIRST TURBINE FROM THE SPACE TO BE COOLED, AND VALVE MEANS FOR CLOSING OFF SAID THIRD PASSAGE MEANS AGAINST FLOW FROM SAID SECOND TURBINE OF SAID FIRST TURBINE, WHEREBY SAID FIRST AND SECOND TURBINES CAN BE COMPOUNDED IN EITHER SERIES OF PARALLEL RELATIONSHIP IN ACCORDANCE WITH THE CONDITIONS OF THE SOURCE OF PRESSURIZED AIR.