Spin cast end cap assembly with internal flyweights

Abstract

A spin cast die assembly includes a casing, an insert and an end cap assembly for retaining the insert against an annular shoulder within the casing. The end cap assembly has a mounting ring attached an end of the casing. The mounting ring receives a flyweight ring which engages an end of the insert and which pivotally supports a plurality of flyweight members which are mounted radially internally with respect to the mounting ring. The mounting ring has an annular flyweight engagement surface which faces generally radially inwardly and towards the shoulder. As the assembly is spun, the inner ends of the flyweight members pivot radially outwardly. The flyweight members thereby cooperate with the flyweight engagement surfaces of the mounting ring to cause the flyweight ring to move axially towards the insert and thereby force the insert against the shoulder.

Dependencies are inferred from the claim text.