Coupling accommodating radial deviation between two shafts

Claim 1

A COUPLING FOR CONNECTING TWO GENERALLY AXIALLY ALIGNED SHAFTS AND ADAPTED TO ACCOMMOATE RELATIVE RADIAL DEVIATION BETWEEN SUCH SHAFTS, COMPRISING AN OUTER PART INCLUDING A HUB PORTION FOR MOUNTING ON A SHAFT AND A SHELL-LIKE ENVELOPE PORTION COAXIAL WITH SAID HUB PORTION AND OPEN OPPOSITE SAID HUB PORTION, AN INNER PART DISPOSED WITHIN SAID ENVELOPE AND HAVING OUTER DIMENSIONS LESS THAN THOSE OF THE ENVELOPE INNER WALLS TO PROVIDE CLERANCE THEREBETWEEN, MEANS PIVOTALLY AND SLIDABLY CONNECTING SAID INNER PART AND ENVELOPE ON A FIRST AXIS PERPENDICULAR TO THE COUPLING AXIS OF THE ENVELOPE, SAID INNER PART HAVING AN AXIALLY DISPOSED OPENING ACCESSIBLE THROUGH THE WALL THEREOF CORRESPONDING TO THE OPEN SIDE OF SAID ENVELOPE, A SHAFT PORTION CONSTITUTING AN AXIAL CONTINUTION OF A SECOND SHAFT, AND INSERTABLE IN SAID INNER PART OPENING, THE DIMENSIONS OF SAID SHAFT PORTION BEING LESS THAN THOSE OF SAID INNER PART OPENING TO PROVIDE CLEARANCE THEREBETWEEN, AND MEANS PIVOTALLY AND SLIDABLY CONNECTING SAID SHAFT PORTION AND INNER PART ON A SECOND AXIS PERPENDICULAR TO BOTH SAID COUPLING AXIS AND SAID FIRST AXIS.