Resilient fan hub

Claim 1

A RESILIENT HUB AND FAN SPIDER ASSEMBLY COMPRISING A FAN SPIDER, THE FAN SPIDER HAVING A CENTRAL GENERALLY STAR-SHAPED APERTURE THEREIN, SAID ASSEMBLY FURTHER INCLUDING A HUB COMPRISING A SLEEVE ADAPTED TO ACCOMMODATE A DRIVE SHAFT AND TO BE ROTATIONALLY LOCKED TO THE DRIVE SHAFT, A PLURALITY OF SYMMETRICALLY SPACED ARMS EXTENDING RADIALLY FROM SAID SLEEVE AND ADAPTED TO EXTEND INTO THE APICES OF THE SPIDER APERTURE, SAID ARMS VARYING IN CROSSSECTION ALONG THEIR LENGTH SO AS TO BE UNIFORMLY STRESSED WHEN DEFLECTED IN A PLANE TRANSVERSE TO THE AXIS OF ROTATION OF THE SLEEVE AND HAVING ABUTMENTS AT THEIR OUTER ENDS ADAPTED TO ENGAGE ONE SIDE FACE OF THE FAN SPIDER, AND A PLURALITY OF LEGS EXTENDING FROM SAID SLEEVE AT AN ACUTE ANGLE THERETO AND HAVING A DIMINISHING CROSS-SECTIONAL AREA FROM THEIR JUNCTION WITH SAID SLEEVE TOWARD THEIR FREE ENDS THEREBY BEING UNIFORMLY STRESSED ALONG A SUBSTANTIAL PORTION OF THEIR LENGTH WHEN SUBJECTED TO A RADIALLY INWARD FORCE, AN ABUTMENT ADJACENT THE FREE END OF EACH OF SAID LEGS OPPOSING SAID ARM ABUTMENTS, SAID LEG ABUTMENTS BEING ADAPTED TO ENGAGE THE OTHER FACE OF SAID SPIDER BETWEEN THE APICES OF SAID SPIDER APERTURE AND TO CLAMP SAID FAN SPIDER AGAINST SAID ARM ABUTMENTS.