发明名称 Screw driving tool
摘要 The device for driving a screw comprises an elongated body having a shank at one end and a blade at the other end. The blade has a pair of opposite side edges, an end edge, and a pair of front and rear flat faces. The faces of the blade are spaced apart from one another adjacent the end edge a predetermined distance which is sized to permit the end edge to fit within the elongated slot of a screw. A pair of elongated flanges extend along the side edges of the blade and each have one end forming a tip which protrudes axially beyond the end edge of the blade. The tips of the flanges also include flat portions which extend perpendicularly to the front and rear faces of the blade so that the tips of the flanges will engage the peripheral edges of the screw head when the end of the blade is within the slot, thereby holding the blade against longitudinal movement within the slot.
申请公布号 US4620461(A) 申请公布日期 1986.11.04
申请号 US19850780164 申请日期 1985.09.26
申请人 HUGHES, WILLIAM J.;WHEELOCK, FRANKLIN R. 发明人 HUGHES, WILLIAM J.;WHEELOCK, FRANKLIN R.
分类号 B25B15/00;(IPC1-7):B25B13/16 主分类号 B25B15/00
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