Broadhead with reversible offset blades
View Patent ↗A broadhead type arrowhead for coupling to the shaft of an arrow includes a plurality of insertable, removable blades, an elongate body having a tip and a depending body, the tip being designed for penetrating an object at which the arrow is directed, the body having a slot defined therein corresponding to each of the plurality of blades, each slot extending through a portion of the body offset from a broadhead longitudinal axis and having two slot openings, each of the slot openings being common with an adjacent slot; and each of the plurality of blades being selectively insertable in a respective slot from either of the common slot openings to effect a left offset or a right offset as desired. A method of forming such a broadhead is further included.
1. A broadhead type arrowhead for coupling to the shaft of an arrow, the broadhead comprising:
a plurality of insertable, removable blades;
an elongate body having a tip and a depending body, the tip being designed for penetrating an object at which the arrow is directed, the body having a slot defined therein corresponding to each of the plurality of blades, each slot extending through a portion of the body offset from a broadhead longitudinal axis and having two slot openings, each of the slot openings being common with an adjacent slot; and
each of the plurality of blades being selectively insertable in a respective slot from either of the common slot openings to effect a left offset or a right offset as desired.
2. The broadhead of claim 1 wherein the respective slots are offset from the longitudinal axis and parallel to the longitudinal axis.
3. The broadhead of claim 1 wherein the respective slots are offset from the longitudinal axis and angled with respect to the longitudinal axis.
4. The broadhead of claim 1 wherein the respective slots are offset from the longitudinal axis and angled inward with respect to the longitudinal axis such that the slot is closer to the longitudinal axis at a slot leading portion, the slot leading portion being closest to the tip, than a slot rearward portion, the slot rearward portion being disposed furthest from the tip.
5. The broadhead of claim 1 wherein the respective blades, when disposed in respective slots in a first disposition are angled with the respect to the longitudinal axis such that a certain first blade side is presented to an airstream flowing past the arrow in flight.
6. The broadhead of claim 5 wherein the respective blades, when in a reverse second disposition in respective slots are angled with the respect to the longitudinal axis such that a certain second blade side is presented to an airstream flowing past the arrow in flight.
7. The broadhead of claim 5 wherein the respective blades, when in a reverse second disposition in respective slots are reverse angled with the respect to the longitudinal axis.
8. The broadhead of claim 5 wherein the respective blades, when in a reverse second disposition in respective slots are angled with the respect to the longitudinal axis such that a certain second blade side is presented to an airstream flowing past the arrow in flight, an aerodynamic force being developed thereby on the certain second blade side acting to rotate the arrow in a second direction.
9. The broadhead of claim 1 wherein the respective blades may be selectively disposed in respective slots to project from either a first common slot opening or an opposed second common slot opening of a certain slot to effect the left offset or the right offset as desired.
10. The broadhead of claim 1 wherein the respective blades, when disposed in respective slots in a first disposition are angled with the respect to the longitudinal axis such that a certain first blade side is presented to an airstream flowing past the arrow in flight, an aerodynamic force being thereby developed on the certain first blade side acting to rotate the arrow in a first direction.
11. The broadhead of claim 1 , the body being formed of unitary, integral construction.
12. The broadhead of claim 1 , the body being distinct from the tip.
13. The broadhead of claim 1 , the blades being generally triangular in shape and having a lightening blade aperture defined therein.
14. The broadhead of claim 1 , the blade slot being triangular in shape.
15. The broadhead of claim 1 , the blades being retained at least in part in the slots by a respective removable coupler.
16. The broadhead of claim 15 , wherein the coupler comprises a screw that is passed through a bore defined in the blade and is threadedly engaged with a threaded bore defined in the body.
17. The broadhead of claim 1 , wherein there are at least three blades.
18. A method of forming a broadhead type arrowhead, the broadhead for coupling to the shaft of an arrow, the method comprising:
providing a plurality of insertable, removable blades;
providing an elongate body having a tip and a depending body, designing the tip for penetrating an object at which the arrow is directed, defining a slot in the body corresponding to each of the plurality of blades, defining each slot extending through a portion of the body offset from a broadhead longitudinal axis and having two slot openings and forming each of the slot openings common to an adjacent slot; and
inserting each of the plurality of blades in a respective slot from either of the common slot openings to effect a left offset or a right offset as desired.
19. The method of claim 18 including offsetting the respective slots from the longitudinal axis in a plane that is parallel to the longitudinal axis.
20. The method of claim 18 including offsetting the respective slots from the longitudinal axis and angling the respective slots with respect to the longitudinal axis.
21. The method of claim 18 including offsetting the respective slots from the longitudinal axis and angling the respective slots inward with respect to the longitudinal axis such that each slot is closer to the longitudinal axis at a slot leading portion, the leading portion being closest to the tip, than a slot rearward portion, the slot rearward portion being disposed furthest from the tip.
22. The method of claim 18 including disposing the respective blades in respective slots in a first angled disposition with the respect to the longitudinal axis such that a certain first blade side is presented to an airstream flowing past the arrow in flight.
23. The method of claim 22 including reversing the respective blades in a reverse second disposition in respective slots and thereby reverse angling the blades with the respect to the longitudinal axis such that a certain second blade side is presented to an airstream flowing past the arrow in flight.
24. The method of claim 22 including reversing the respective blades in a reverse second disposition in respective slots to effect reverse angling the blades with the respect to the longitudinal axis.
25. The method of claim 22 including reversely disposing the respective blades in a reverse second disposition in the respective slots at an angle with the respect to the longitudinal axis such that a certain second blade side is presented to an airstream flowing past the arrow in flight and rotating the arrow in a second direction by means of an aerodynamic force developed thereby on the certain second blade side.
26. The method of claim 18 including selectively disposing the respective blades in respective slots to project from either a first common slot opening or an opposed second common slot opening of a certain slot to effect the left offset or the right offset as desired.
27. The method of claim 18 including disposing the respective blades in a first disposition in respective slots at an angle with the respect to the longitudinal axis such that a certain first blade side is presented to an airstream flowing past the arrow in flight and rotating the arrow in a first direction by means of an aerodynamic force developed on the certain first blade side.
28. The method of claim 18 , wherein each blade is retained at least in part within the respective slot.