发明名称 Hole punch device having punch elements with non-circular cutting surfaces
摘要 The disclosed invention provides a dual hole punch for perforating at least one sheet of paper with dual non-circular holes. The dual hole punch may be configured to deliver dual non-circular perforations to paper positioned in either a substantially horizontal or substantially vertical direction. For receipt of paper positioned in a substantially horizontal direction, the dual hole punch includes a base plate upon which is mounted a guide bracket. The guide bracket is mounted to the base plate and is configured with two bores. Each of the bores include a reciprocally moveable, spring biased punch having bottom end non-circular cutting surfaces. When a lever, pivotally mounted to the guide bracket and coupled to top surfaces of the punches, is actuated towards the base plate, the non-circular cutting surfaces of the dual punches perforate the sheet(s) of paper with non-circular holes. An optional adjustable paper guide assembly may also be included.
申请公布号 US2005204886(A1) 申请公布日期 2005.09.22
申请号 US20040803275 申请日期 2004.03.18
申请人 LOWENTHAL PAMELA K 发明人 LOWENTHAL PAMELA K.
分类号 B26F1/14;B26F1/36;(IPC1-7):B26F1/14 主分类号 B26F1/14
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