Low friction sliding and torque transmitting connection

Claim 1

A TORQUE TRANSMITTING SLIP CONNECTION COMPRISING IN COMBINATION, AN OUTER AXIALLY ELONGATED PORTION HAVING AN ELONGATED AIALLY EXTENDING OPENING THEREIN, AN AXIALLY ELONGATED URETHANE PLASTIC PORTION HAVING A SHORE TYPE D DUROMETER HARDNESS IN THE RANGE OF 65 TO 90 AND A MINIMUM TENSILE STRENGTH OF ABOUT 5000 P.S.I. DISPOSED WITHIN THE OPENING IN SAID OUTER PORTION WITH A SUBSTANTIAL PORTION OF THE PLASTIC PORTION BEING DISPOSED WITHIN AND CIRCUMFERENTIALLY SURROUNDED BY SAID OUTER PORTION, MEANS SECURING SAID PLASTIC PORTION TO SAID OUTER PORTION AGAINST RELATIVE AXIAL AND ROTATIVE MOVEMENT SUCH THAT TORSIONAL LOADS MAY BE TRANSFERRED THEREBETWEEN WHILE SAID OUTER PORTION SURROUNDING SAID PLASTIC PORTION INHIBITS THE EXTERNAL PHERIPHERY OF THE PLASTIC PORTION FORM DEFORMING IN A READIALLY OUTWARD DIRECTION, SAID PLASTIC PORTION HAVING AN ELONGATED AXIALLY EXTENDING NONCIRCULAR OPENING THEREIN, AND AN INNER AXIALLY ELONGATED MEMBER HAVING AT LEAST A PORTION THEREOF DISPOSED IN SAID NONCIRCULAR OPENING AND AXIALLY SLIDINGLY COOPERABLE WITH AND CLOSELY CONFORMING THERETO IN A TORQUE TRANSMITTING RELATIONSHIP FOR TELESCOPING MOVEMENT RELATIVE TO SAID PLASTIC PORTION AND TRANSMITTING TORQUE THERETO.