Rotor for radial flow pumping means

Claim 1

IN COMBINATION IN A RADIAL FLOW OF COMPRESSOR ROTOR OF LIGHT AND STRONG CONSTRUCTION HAVING SMOOTH INTERIOR SURFACES AND ADAPTED TO MASS PRODUCTION, A PERIPHERALLY CONTINUOUS ANNULAR INNER SHEET METAL SHROUD HAVING A FLARED SHAPE, AN ANNULAR OUTER SHEET METAL SHROUD PERIPHERALLY CONTINUOUS AND SHAPED SIMILARLY TO SAID INNER SHROUD AND SPACED THEREFROM DEFINING AN ANNULAR DUCT HAVING AN ANNULAR AXIALLY FACING INLET ADJACENT AN AXIS OF ROTATION AND AN EXIT FACING RADIALLY OUTWARDLY OF SAID AXIS TO DISCHARGE FLUID RADIALLY WITH CENTRIFUGAL PRESSURE, SAID SHROUDS BEING FORMED SEPARATELY, A PLURALITY OF SHEET METAL BLADES POSITIONED BETWEEN SAID SHROUDS AND PERIPHERALLY SPACED DIVIDING SAID DUCT INTO A PLURALITY OF ROTOR PASSAGES, SAID OUTER SHROUD OVERLYING THE INLET ENDS OF SAID BLADES, EACH OF SAID BLADE BEING IN CONTACT AT OPPOSITE EDGES WITH SAID SHROUDS AND HAVING A PLURALITY OF LUGS SPACED ALONG THE BLADE LENGTH AND PROJECTING THROUGH OPENINGS IN EACH SAID SHROUD, SOLDER BONDING EACH SAID BLADE AND THE LUGS THEREOF TO EACH SAID SHROUD WITH A SMOOTH FILLET AT THE JUNCTIONS OF BLADE AND SHROUDS SUBSTANTIAL THROUGHOUT THE LENGTH OF SAID BLADES, A SHEET METAL ONE-PIECE DISK LAPPING SAID INNER SHROUD OVER A SUBSTANTIAL RADIAL EXPANSE THEREOF AND BONDED THERETO BY SOLDER, A RING BONDED TO SAID OUTER SHROUD AT SAID INLET TO SAID DUCT, AND AN ANNULAR HUB ELEMENT POSITIONED INWARDLY OF SAID ANNULAR INNER SHROUD FOR SUPPORTING SAID ROTOR FOR ROTATION HAVING AN AXIAL LENGTH EXTENDING FROM A FORWARD POSITION ADJACENT SAID INLET REARWARDLY TO A POSITION RADIALLY INWARD OF SAID EXIT, SAID HUB ELEMENT HAVING AN AXIALLY EXTENDING SURFACE FAYING SAID INNER SHROUD AND BONDED THERETO BY FUSED METAL ADJACENT THE INLET END THEREOF, SAID RING BEING RADIALLY OPPOSITE THE PORTION OF SAID HUB ELEMENT AT SAID INLET, EACH SAID BLADE HAVING ITS TIP PORTION RADIALLY OPPOSITE SAID RING AND SECURED THERETO AND ITS ROOT PORTION RADIALLY OPPOSITE SAID PORTION OF SAID HUB ELEMENT AND SECURED THERETO BY BRAZING SO THAT RADIAL FORCES ARISING FROM CENTRIFUGAL ACTION ARE SUSTAINED DIRECTLY RADIALLY BY SAID RING AND SAID HUB ELEMENT, THE PORTIONS OF EACH SAID BLADE ADJACENT SAID INLET EXTENDING RADIALLY OUTWARD FROM SAID INNER SHROUD TO SAID OUTER SHROUD ALONG SUBSTANTIALLY STRAIGHT LINES THROUGHOUT THE RADIAL EXTENT THEREOF SO THAT THE CENTRIFUGAL LOADS THROUGHOUT SAID BLADES ARE SUSTAINED IN TENSION, SAID HUB ELEMENT ALSO HAVING A RADIAL FLANGE INTEGRAL THEREWITH FAYING A SIDE OF SAID DISK IN SPACED RELATION TO SAID AXIAL SURFACE AND BEING BONDED THERETO BY FUSED METAL.