Patent ID: 8919178
Filing Date: 2014-12-30
Classification: B21D

Abstract:
1. In a metal forming die having first and second die members mounted a spaced apart distance for reciprocation between converged and diverged positions, the improvement of a guided keeper assembly, comprising: a base having: a guide pin having: a socket head cap screw having a threaded shank portion detachably received and securely retained in a second threaded aperture in said first die member at a location adjacent to said first threaded aperture, and a generally cylindrically shaped head portion with an exterior end face and an outside peripheral surface which mates with said arc-shaped notches in said scalloped shoulder portion of said base; a retainer ring detachably received and securely retained in said retainer ring groove in said base, and having an interior face disposed over at least a portion of said exterior end face of said head portion of said cap screw, whereby engagement between said outside peripheral surface of said head portion of said cap screw and an associated one of said arc-shaped notches in said scalloped shoulder portion of said base in which the same is received positively prevents said base from unintentionally unfastening from said first threaded aperture in said first die member, and engagement between said exterior end face of said head portion of said of said cap screw and said interior face of said retainer ring positively prevents said cap screw from unintentionally unfastening from said second threaded aperture in said first die member.