发明名称 Hardware press and punch apparatus
摘要 Presented is a hardware punch and/or press apparatus adapted to assemble fastening devices to or punch holes in hardware for various purposes. The apparatus includes a stationary tool or anvil on which hardware on which an operation is to be performed is supported, and a hydraulically operated ram adapted to move against the work piece or hardware upon activation of an appropriate switch. In one aspect of the invention, a mechanism is provided to effect retraction of the hydraulically operated ram without the imposition of a destructive pressure if the operator's finger is contacted by the ram.
申请公布号 US4391358(A) 申请公布日期 1983.07.05
申请号 US19800204200 申请日期 1980.11.05
申请人 HAEGER, VIRGIL J. 发明人 HAEGER, VIRGIL J.
分类号 B21D55/00;B21J15/28;F16P3/16;(IPC1-7):B23Q11/00 主分类号 B21D55/00
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