Tri-blade broadhead with manually sharpenable trocar tip

  • US 7,011,589 B2
  • Filed: 09/11/2003
  • Issued: 03/14/2006
  • Est. Priority Date: 09/11/2003
  • Status: Active Grant
First Claim
Patent Images

1. An arrow broadhead comprising:

  • a main body having;

    a longitudinal axis;

    a three-sided chisel tip, said tip generally having the shape of a three-sided equilateral pyramid, the sides of which, being partially cut away, meet at a common vertex that is coincident with said longitudinal axis and which serves as a forwardmost point of the tip, the intersection of each pair of adjacent sides forming a sharpened edge;

    a generally hour-glass-shaped portion continuous with said three-sided chisel tip;

    a cylindrical portion continuous with said generally hour-glass-shaped portion;

    a rearward-facing shoulder formed at the junction of said cylindrical portion and said generally hour-glass-shaped portion;

    three blade installation slots, an anterior portion of each slot having a forward-facing recess, and each blade installation slot being aligned with an associated sharpened edge and positioned such that the anterior portion of the slot is adjacent a rearmost point on the associated sharpened edge, and a posterior portion of the slot is in the cylindrical portion; and

    a threaded portion continuous with said cylindrical portion for securing the main body to an arrow shaft;

    three laminar blades, each of which is insertable within a blade installation slot, each laminar blade having an anterior tab that fits into a forward-facing recess, a posterior extension that fits into the posterior portion of the blade installation slot, and a honed straight edge, each laminar blade being shaped so that when it is inserted within a blade installation slot, the honed straight edge and the sharpened edge of the chisel tip make a generally straight line; and

    an annular blade retention collar which slides over said cylindrical portion and traps the posterior extension of each laminar blade, said annular blade retention collar being secured in place by an attached arrow shaft.

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