Compressor arrangement

Claim 1

IN A LOW PRESSURE SYSTEM FOR MOVING A FLUID AT HIGH SPEED FROM A FIRST LOW PRESSURE COMPARTMENT INTO A SECOND LOW PRESSURE COMPARTMENT WHICH IS MAINTAINED AT A HIGHER PRESSURE THAN SAID FIRST COMPARTMENT, A COMPRESSOR ARRANGEMENT ADAPTED TO BE DISPOSED BETWEEN SAID COMPARTMENTS WITH AN INLET OPENING INTO SAID FIRST COMPARTMENT AND AN OUTLET OPENING INTO SAID SECOND COMPARTMENT, SAID COMPRESSOR INCLUDING A ROTATABLE HUB CARRYING AT LEAST ONE PAIR OF FLEXIBLE, ELONGATED BLADES OF THIN CROSS SECTION, SAID HUB BEING PROVIDED WITH A BORE EXTENDING PARALLEL TO THE AXIS OF ROTATION OF THE HUB, SAID BORE OPENING TO THE PERIPHERY OF THE HUB, EACH COMPRESSOR BLADE BEING JOINED TO ANOTHER COMPRESSOR BLADE TO FORM A PAIR OF BLADES HAVING A COMMON BIGHT PORTION, SAID COMMON BIGHT PORTION OF SAID PAIR OF BLADES BEING SEATED IN THE BORE WITH THE PAIR OF BLADES EXTENDING THROUGH THE OPENING OF THE BORE, AND MEANS FOR MOUNTING THE COMMON BIGHT PORTION OF SAID PAIR OF COMPRESSOR BLADES TO SAID COMPRESSOR, SAID MOUNTING MEANS INCLUDING A PIN IN THE SPACE DEFINED BY THE COMMON BIGHT PORTION FOR URGING THE BIGHT PORTION AGAINST THE WALL OF THE BORE AND A SHOE MEMBER POSITIONED BETWEEN THE PAIR OF BLADES AND DISPOSED PARTIALLY IN SAID SLOT FOR MAINTAINING THE BLADES IN SPACED RELATION, SAID PIN AND CORRESPONDING SHOE MEMBER COOPERATING TO HOLD THE PAIR OF BLADES TO SAID HUB.