发明名称 Method of manufacturing a woodworker's holdfast
摘要 A semi-automated method for manufacturing a woodworker's holdfast tool from an unheated length of mild steel rod includes forging a flattened contact surface at one end of the rod and subsequently bending the rod upwardly away from the contact surface and forming the crook portion in an automated wire forming machine configured to exceed the desired working angle during cold forming of the crook portion to account for the resilience of the rod when the bending force is removed.
申请公布号 US7571631(B2) 申请公布日期 2009.08.11
申请号 US20060502113 申请日期 2006.08.10
申请人 01 INC. 发明人 MOSKOWITZ JOEL;LOMBARDI RICHARD;NICK GEORGE RANDOLPH
分类号 B21D11/00;B21D9/05;B23Q3/00 主分类号 B21D11/00
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