Ski pole

Claim 1

A SKI POLE COMPRISING AN ELONGATED SYMMETRICAL HOLLOW TUBE WITH ITS SURFACE SMOOTHLY TAPERED FROM A CENTRAL AREA OF MAXIMUM DIAMETER TO SUBSTANTIALLY IDENTICAL AREAS OF SUBSTANTIALLY EQUAL MINIMUM DIAMETER WITH SAID MAXIMUM DIAMETER BEING BETWEEN ABOUT TWO AND TEN TIMES SAID MINIMUM DIAMETER AND WITH SAID TUBE HAVING SUBSTANTIALLY THE CHARACTERISTICS OF A CONSTANT STRENGTH BEAM, A HAND GRIP MEMBER MOUNTED ON ONE END OF SAID TUBE, SECURING MEANS EXTENDING INTO THE HOLLOW INTERIOR OF SAID ONE END OF SAID TUBE AND RESTRAINING SAID GRIP MEMBER AGAINST AXIAL MOVEMENT OFF OF SAID TUBE, AND A TIP PORTION CLOSING SAID OTHER END OF SAID TUBE, THE WALL THICKNESS OF SAID TUBE BEING CONTROLLED ALONG THE LENGTH OF SAID TUBE TO WEAKEN THE STRENGTH OF SAID TUBE IN SAID CENTRAL AREA BELOW THE STRENGTH OF A PURELY CONSTANT STRENGTH BEAM IN SAID AREA, WHEREBY FAILURE OF SAID POLE RESULTING FROM THE APPLICATION THERETO OF EXCESSIVE BENDING MOMENTS WILL OCCUR AT SAID CENTRAL AREA.