US 12,337,369 B2
Guide pin connection
Scott M. Breen, Ada, MI (US); and Joel T. Pyper, Holland, MI (US)
Assigned to STANDARD LIFTERS, INC., Grand Rapids, MI (US)
Filed by STANDARD LIFTERS, INC., Grand Rapids, MI (US)
Filed on Jun. 21, 2021, as Appl. No. 17/352,536.
Claims priority of provisional application 63/045,456, filed on Jun. 29, 2020.
Prior Publication US 2021/0402455 A1, Dec. 30, 2021
Int. Cl. B21J 13/02 (2006.01); B21D 37/12 (2006.01); B23P 15/24 (2006.01)
CPC B21D 37/12 (2013.01) [B21J 13/02 (2013.01); B23P 15/24 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A guide pin assembly for attachment to a first die member in a metal forming die, comprising:
a guide pin body having a generally cylindrical shape, including:
a first end portion configured for operable attachment with a first die member;
a second end portion disposed generally opposite said first end portion;
a first groove extending circumferentially about said exterior surface of said first end portion;
a second groove extending circumferentially about an exterior surface of said first end portion;
a threaded central opening in the top surface of said first end portion;
a first retainer ring closely received and retained in said first groove, contacting a first surface of said first die member;
a second retainer ring closely received and retained in said second groove, contacting a second surface of said first die member; and
wherein said first surface of said first die member is the lower surface of an opening formed in the top surface of said first die member.