Plunger repositioning system

摘要

A tool for repositioning a plunger is formed from a pair of concentric and relatively rotatable shafts. The inner and tubular outer shafts respectively support enlarged forward and rear head elements. The shafts are relatively rotatable between a first position, in which the cross-sectional profiles of the head elements are aligned, and a second position, in which the cross-sectional profiles of the head elements are in skewed opposition. A ball detent mechanism at the interface between the forward and rear head elements permits accurate location of the first and second positions. The tool is used with a tubular collar element having a stem section and an enlarged flange section, and a disk-shaped platform element having a centrally disposed and internally threaded opening. The threaded opening in the platform element receives the externally threaded outer shaft of the tool.

主权项

1. A tool, comprising:
a pair of concentric and relatively rotatable shafts, comprising:
an elongate tubular outer shaft; andan elongate inner shaft; and a head assembly formed from adjacent coaxial head elements, comprising:
a forward head element supported by the inner shaft; anda rear head element supported by the outer shaft and having the same cross-sectional profile and cross-sectional dimensions as the forward head element.