Abstract: A rotary stage having an integrated collet closure assembly includes: an actuating piston positioned in a piston housing; a drawbar configured to be moved axially depending on the position of the actuating piston to open and close the collet closure assembly, and rotationally by movement of a rotating shaft of the rotary stage; and a pair of thrust bearings provided between the actuating piston and the drawbar. The pair of thrust bearings acts as an interface between the actuating piston and the drawbar such that the drawbar rotates freely and the actuating piston and the piston housing remain stationary in a rotary direction.

Abstract: Clam shell-type blow mold apparatus has a pair of opposed upper mold halves that cooperate to define a partial blow cavity. A one-piece bottom mold portion that completes the blow cavity is locked up against the top mold portion by a locking assembly to prevent separation of the bottom mold portion from the top mold portion during the high pressure blow cycle. The locking assembly includes a support ring for the bottom mold portion that has a number of radially outwardly projecting male lugs adapted to fit into female receiving notches on opposed halves of a lock ring on the upper mold portion. Individual ledges at the bottoms of the notches underlie the lugs of the support ring when the mold halves are fully closed so as to preclude separation of the support ring, and thus the bottom mold portion, from the lock ring and the upper mold portion. The notches in the support ring are interposed between pairs of bolt holes in the lock ring.