Anti-friction slip joint

Claim 1

A SLIP JOINT COMPRISING A SLEEVE, A SHAFT TELESCLOPICALLY MOUNTD WITH THE SLEEVE, THE SLEEVE AND SHAFT INCLUDING A PLURALITY OF RADIALLY INWARD AND OUTWARD EXTENDING SPLINES, RESPECTIVELY, THE SLEEVE SPLINES INCLUDING THEREBETWEEN A PLURALITY OF GROOVES EQUISPACED AROUND THE SLEEVE AND THE SHAFT SPLINES EXTENDING INTO THE GROOVES A PLURALITY OF ENDLESS BEARING ASSEMBLIES CARRIED BY THE SHAFT IN STRADDLING RELATION TO SELECTED SHAFT SPLINES FOR BEARING ASSEMBLY RELATION TO SELECTED SHAFT SPLINES FOR BEARING ASSEMBLY INCLUDING A PLURALITY OF LINKED ROLLERS FOR SIMULATANEOUS MOVEMENT ALONG THE SIDES OF THE ASSOCIATED, SELECTED SHAFT SPLINE DURING RELATIVE MOVEMENTS OF THE SLEEVE AND SHAFT, AND THE ENDS OF EACH SELECTED SHAFT SPLINE BEING ROUNDED TO FACILITATE MOVEMENT OF THE BEARING ASSEMBLIES, EACH ROLLER INCLUDING COMPONENTS CONNECTED BY A CYLINDRICAL COAXIALL NECK HAVING A SUBSTANTIALLY SMALLER DIAMETER AND THE ROLLER COMPONENTS BEING CONNECTED BY A PROGRESSION OF LINKS MOUNTED ON THE NECKS, THE ENDS OF EACH ROLLER COMPONENTT BEING GUIDED BY FLAT SURFACES RESPECTIVELY PROVIDED ON THE SHAFT AND ON THE SLEEVE AND FORMING PART OF THE BASE OF THE GROOVE INCLUDED BETWEEN THE ASSOCIATED SLEEVE SPLINES.