Radial-flow turbine safety

Claim 1

A RADIAL-FLOW TURBINE ADAPTED TO FAIL SAFELY AT PREDETERMINED SPEED WITH CONTAINMENT OF RELEASED BLADES COMPRISED OF: A CONTAINMENT HOUSING PROVIDING AN ANNULAR AXIALLYEXTENDING WALL AND RADIALLY-OUTWARDLY-DIVERGING ANNULAR WALL, A TURBINE WHEEL DISC HAVING AN ANNULAR RADIALLY-OUTWARDLY-DIVERGING SURFACE FACING TOWARD SAID RADIALLYOUTWARDLY-DIVERGING WALL OF SAID HOUSING, SAID TURBINE WHEEL DISC HAVING A HUB AND A PLURALITY OF RADIALLY-EXTENDING OPENINGS ADJACENT THE DISC PERIPHERY WITH SAID OPENINGS EACH HAVING POINTED LATERAL EDGE AT THE DIVERGING SURFACE OF SAID TURBINE WHEEL DISC, A PLURALITY OF RADIAL-FLOW TURBINE BLADES HAVING PIVOT TABS EACH MOUNTED WITH ITS TAB INSERTED IN SAID PERIPHERAL DISC OPENINGS AND HOOKED ON SAID POINTED LATERAL EDGE TO PROVIDE POSITIONING AND A PIVOT ARRANGEMENT, SAID BLADES EXTENDING FROM SAID DISC DIVERGING SURFACE TO ADJACENT SAID AXIALLY-EXTENDING WALL AND SAID DIVERGING WALL OF SAID HOUSING TO PROVIDE SHROUD EDGES SAID TURBINE BLADES HAVING RADIALLY-EXTENDING INLET EDGES PROVIDING WITH SAID SHROUD EDGES INLET CORNERS, THE RADIALLY-INNER PARTS OF SAID BLADES BEING CONNECTED TO SAID HUB OF SAID TURBINE WHEEL DISC BY FRANGIBLE MEANS, AND EACH OF SAID BLADES, THE PIVOT ARRANGEMENT OF ITS PIVOT TAB AND SAID FRANGIBLE MEANS BEING CONSTRUCTED AND ARRANGED SO THAT, WHEN SAID TURBINE WHEEL ROTATES ABOVE A PREDETERMINED SPEED, A BLADE WILL BE RELEASED AND PIVOT AGAINST SAID HOUSING.