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Anti-kickback system

  • US 4,615,247 A
  • Filed: 09/13/1985
  • Issued: 10/07/1986
  • Est. Priority Date: 09/13/1985
  • Status: Expired due to Term
First Claim
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1. For use with a table saw of the type having a table top for supporting a workpiece and a motor-driven circular saw blade, an anti-kickback system comprising:

  • splitter means adapted to be mounted on a table saw and including slot means therethrough inclined relative to an associated table top;

    cam means having a peripheral, work-engaging surface including a spiral segment;

    pin means attached to said cam means and extending through said slot means to form a pivot axis for said cam means at approximately a center of said spiral segment; and

    said slot means being sized to slidably receive said pin means and including an upper, elongate edge having detent means shaped to receive said pin means;

    whereby upward and rearward movement of a workpiece in a kickback condition beneath said cam means causes said cam means to be pivoted and be displaced to a locked configuration such that said pin means engages said detent means and a portion of said spiral segment contacts an upper surface of a workpiece thereunder in a wedging engagement with an associated table top.

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