Patent ID: 9484120
Filing Date: 2016-11-01
CPC Classification: F16L,G21C,Y02E

Claim Text:
1. A method of axially repositioning an annulus spacer having an inner cylindrical surface in contact with an inner tube and an outer cylindrical surface in contact with a generally coaxial outer tube, which method comprises the steps of: (a) vibrationally isolating a section of the wall of the inner tube adjacent to the annulus spacer; (b) causing said annulus spacer to go from a loaded condition to an unloaded condition; (c) vibrating the annulus spacer by vibrating the isolated section of the wall at a desired frequency such that the annulus spacer is displaced longitudinally from an initial position to a required position, whereby the vibration of the annulus spacer produces accelerations sufficient to overcome the tension of the annulus spacer on the inner tube.