Pivoting-blade deep-penetration arrowhead
View Patent ↗A broadhead for an archery arrow is disclosed. The broadhead includes a substantially cylindrical body having a forward cutting end, a rearward attachment end, and a side wall. The forward cutting end terminates in a point and further includes a plurality of pointed faces, each of which has a concave scoop formed therein. A cutting edge is formed between each pointed face. The side wall of the body, in one embodiment, includes a plurality of longitudinal slots. The broadhead in such an embodiment further includes a plurality of blades each having a forward cutting edge and preferably a rearward cutting edge. Each edge meets at a distal point. Each blade further includes a slot engaging edge opposite the distal point, and each blade may be pivotally fixed in one slot.
1. A broadhead comprising:
a substantially cylindrical body having a forward cutting end, a rearward attachment end having an arrow attachment means, and a side wall, the forward cutting end terminating in a point and further including a plurality of pointed faces, each face including a concave scoop formed therein, a cutting edge being formed between each pointed face, where each concave scoop and cutting edge are noncontiguous.
2. The broadhead of claim 1 wherein the side wall includes a plurality of longitudinal slots, each having a fastener aperture, the broadhead further including a plurality of blades each having a forward cutting edge, a rearward cutting edge, each cutting edge meeting at a distal point, each blade further including a slot engaging edge opposite the distal point and having a fastener aperture coalignable with the fastener aperture of any of the plurality of slots; the broadhead further including a plurality of blade fasteners for fixing each blade in one of the longitudinal slots at the fastener apertures.
3. The broadhead of claim 2 wherein the plurality of blades is exactly three, and wherein each longitudinal slot defines a blade plane, each blade plane offset from the longitudinal axis of the body.
4. The broadhead of claim 3 wherein the slot engaging edge of each blade is curved such that the blade may pivot in the longitudinal slot around the fastener between a forward position wherein the distal point of the blade is longitudinally in front of the fastener aperture of the blade, and a rearward position wherein the distal point of the blade is longitudinally behind the fastener aperture of the blade.
5. The broadhead of claim 3 wherein each blade fastener is a set screw.
6. The broadhead of claim 3 wherein each blade fastener is a threadless shaft frictionally held within each fastener aperture of the body.
7. The broadhead of claim 3 wherein the body and each blade is made from stainless steel.
8. The broadhead of claim 1 wherein the arrow attachment means is a threaded shaft for engaging a threaded bore of the arrow.