Liquid reservoirs for aircraft

Claim 1

A LIQUID RESERVOIR FOR AIRCRAFT, COMPRISING IN COMBINATION; AN OUTER SHELL, A PLENUM CHAMBER WHOLLY ENCLOSED WITHIN AND SPACED FROM SAID OUTER SHELL, AND HAVING RESTRICTED PASSAGES ON TOP AND BOTTOM FOR BLEEDING AIR AND LIQUID FROM SAID PLENUM CHAMBER INTO SAID SURROUNDING OUTER SHELL, A DE-AERATION CHAMBER ARRANGE WHOLLY WITHIN SAID OUTER SHELL AND PARTLY WITHIN SAID PLENUM CHAMBER, A VORTEX RING ARRANGED CO-AXIALLY WITHIN SAID DE-AERATION CHAMBER, AN INLET PIPE FOR LIQUID PENETRATING FROM OUTSIDE THROUGH SAID OUTER SHELL, PLENUM CHAMBER AND DE-AERATION CHAMBER AND ISSUING TANGENTIALLY INTO SAID VORTEX RING, SAID DE-AERATION CHAMBER HAVING PORTS IN THE MIDDLE COMMUNICATING WITH SAID PLENUM CHAMBER, AN OUTLET PIPE FOR THE LIQUID PENETRATING FROM SAID PLENUM CHAMBER OUTWARDLY THROUGH SAID OUTER SHELL, AND A VENT PIPE PENETRATING FROM SAID DE-AERATION CHAMBER OUTWARDLY THROUGH SAID OUTER SHELL, THE LIQUID OVERFLOWING THE EDGES OF SAID VORTEX RING INTO SAID DE-AERATION CHAMBER FLOWING FROM THE LATTER THROUGH SAID PORTS INTO SAID PLENUM CHAMBER AND INTO SAID OUTLET PIPE, AND THE AIR SEPARATED FROM SAID LIQUID EMERGING FROM SAID DE-AERATION CHAMBER THROUGH SAID VENT PIPE INTO THE OUTER ATMOSPHERE.