发明名称 Apparatus for testing and straightening arrow shafts and the like
摘要 An arrow straightener for testing and straightening bent arrow shafts is provided with a pair of arrow supports, each of which has a bearing surface that is rotatable about an axis normal to a vertical plane through the longitudinal axis of an arrow positioned on the supports to maintain the bearing surface in flat contact relation to the arrow shaft, a press mechanism between the supports for applying a straightening pressure on the arrow shaft, and a deflection indicator with a feeler that extends through the press mechanism into contact with the shaft, the feeler being movable independent of the press but located at a point central to the pressure applying surface. The apparatus also includes a scale, indicator, weighted body, and spacer for testing the spine strength of wooden arrow shafts.
申请公布号 US4203308(A) 申请公布日期 1980.05.20
申请号 US19780884114 申请日期 1978.03.07
申请人 DAVIS, DUANE L 发明人 DAVIS, DUANE L
分类号 B21D3/10;B21D3/16;(IPC1-7):B21D3/16 主分类号 B21D3/10
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