Patent ID: 11969775
Assignee: STANDARD LIFTERS, INC.
Field: Machine tools (Mechanical engineering)
Classification: CPC B | IPC B

Claim 6:
7. A stock lifter assembly for a metal forming die in which stock is formed into at least one part, comprising:
a guide pin body with an outer end portion oriented toward the stock and an inner end portion oriented away from the stock, wherein:
said outer end portion includes an outer end surface with a ring groove; and
said inner end portion includes a retainer groove on the guide pin body;

a cap insert having an outer end portion oriented toward the stock and an inner end portion oriented away from the stock;
a head ring with a central aperture, having an internal shoulder, said central aperture surrounding at least a portion of said cap insert and having a width that is wider than the width of the guide pin body;
a ring member coupled to said ring groove that contacts at least a portion of said internal shoulder of said head ring;
a base having an outer end portion oriented toward the stock and an inner end portion oriented away from the stock with a guide pin aperture extending through the base, wherein:
said outer end portion of said base has a first width; and
said inner end portion of said base has a second width that is larger than said first width, forming a shoulder on the exterior surface of said base, and an inner end surface;
at least one fastener relief formed on said base;

a spring member having a generally hollow interior with an outer end portion oriented toward the stock and an inner end portion oriented away from the stock, wherein:
said outer end portion contacts a surface of said head ring; and
said inner end portion contacts at least a portion of said shoulder on said exterior surface of said base; and

a retainer received on said retainer groove on said inner end portion of said guide pin body, said retainer contacting said inner end surface of said base when said stock lifter assembly is fully raised.