Patent ID: 6142698
Filing Date: 2000-11-07
Classification: F16B,F16L,Y10T

Abstract:
Telescoping tube apparatus, comprising;an outer tube having an external threaded portion at one end;an inner tube receivable in the outer tube and having an enlarged ring at the end received by the outer tube;a joining sleeve having an internal threaded portion at one end for engaging the external threaded portion of the outer tube, an internal shoulder facing said one end of the sleeve, an external threaded portion and jaw means at its other end,a clamping sleeve for screwing onto the external threaded portion of the joining sleeve, having clamping means, andan expandible locking ring located between the shoulder and the end of the enlarged ring facing away from the end of the inner tube and having a normal internal diameter less than the diameter of the enlarged ring and a normal external diameter intermediate the inner and outer diameters of said shoulder,wherein the clamping sleeve releasably compresses the jaw means of the joining sleeve as it is screwed thereon to lock the inner and outer tubes together, and releases the jaw means when it is unscrewed to permit axial sliding movement of the tubes.