ARROWHEAD HAVING BOTH FIXED AND MECHANICALLY EXPANDABLE BLADES

• US 20080234079A1
• Filed: 03/21/2008
• Published: 09/25/2008
• Est. Priority Date: 03/23/2007
• Status: Active Grant

• Current Assignee: FeraDyne Outdoors, LLC
• Original Assignee: Eastman Outdoors Incorporated (FeraDyne Outdoors, LLC)
• Inventors: Butcher, Robert
• Granted Patent: US 8,062,155 B2
• Time in Patent Office: Days
• US Class Current: 473/584
• CPC Class Codes: F42B 6/08 Arrow heads; Harpoon heads

Abstract

An improved arrowhead features two sets of expandable blades. The expandable blades are pivotally movable from a first, concealed position to a second expanded position when spurs on the front of the blades contact a target. The first concealed position of the blades allows the arrowhead to penetrate the target upon contact. The fixed blades may be diamond-shaped, double-edged replaceable blades. The expandable blades comprise at least two pivotable blades that can be held in the first safe position by an elastic band. The spurs are located at a first end of the expandable blades, and these spurs are located proximate the base of the fixed blade portion of the arrow head, to allow the fixed portion to penetrate the target before the expandable blades are deployed by the spurs contacting the target.

Claims

1. An arrowhead for securement to one end of an arrow, comprising:

a support body having a base and a tip, the tip being opposite the base and having a conical shape;

at least one fixed blade attached to said support body and which includes a base portion for placement within a center slot of said support body, the base portion of said fixed blade being substantially continuous and uninterrupted, said fixed blade being wider than said support body;

at least four expandable blades which are pivotally attached to the support body, said expandable blades having cutting edges formed on leading edges thereof, each of the expandable blades comprising a first end having a hole formed therein for attaching to said support body, and a second end opposite said first end with a spur formed thereon for extending outwardly from said support body when said expandable blades are in a closed configuration thereof, and

wherein said expandable blades are pivotally movable between a first retracted position, in which said cutting edges are disposed in slots of said support body, and a second open position in which said expandable blades extend outwardly from said support body with said cutting edges exposed.

2. The arrowhead of claim 1, wherein the at least one fixed blade comprises a diamond-shaped double-edged fixed blade.

3. The arrowhead of claim 1, wherein the fixed blade has serrated edges.

4. The arrowhead of claim 1, wherein the fixed blades comprise replaceable blades.

5. The arrowhead of claim 1, wherein the expandable blades comprise two pairs of parallel blades and the body has two pairs of parallel slots formed therein.

6. The arrowhead of claim 1, wherein the spur is located at the leading edge of the expandable blades when in the retracted position and the spur is positioned adjacent the fixed blade.

7. The arrowhead of claim 1, wherein the spur provides aerodynamic stability to the arrow during flight.

8. The arrowhead of claim 1, wherein the spur is configured to impact the target during use, forcing the expandable blades rearwardly to orient the cutting edges facing forwardly.

9. The arrowhead of claim 1, wherein the cutting edges of the expandable blades are concealed within the slots in the support body in the retracted position thereof.

10. The arrowhead of claim 1, wherein each of the expandable blades includes a rounded portion at the first end to allow for fast deployment of the blades and a flat portion to act as a stop to limit the rearward motion of the expandable blade when it hits a target.

11. The arrowhead of claim 1, wherein the expandable blades are secured to the body with screws that act as a fulcrum.

12. An arrowhead for attachment to an arrow shaft, the arrowhead including a fixed blade portion, a movable blade portion and a body, the arrowhead further comprising:

the body having a first end and a second end, the second end having an attachment portion for securing the arrowhead to the arrow shaft, the first end having the fixed blade attached thereto;

the body further having two pairs of parallel slots between the fixed blades and the second end; and

two pairs of parallel movable blades each having a first end attached to the body in the slots adjacent the second end of the body, the movable blades fitting into the slots, each said movable blade having a spur that pivots from a first retracted position adjacent the fixed blades while the movable blades are in the slots and a second position wherein the spurs are spaced from the body exposing the sharpened edges of the movable blades.

13. The arrowhead of claim 12, wherein the fixed blades are in a diamond-shape and are replaceable on the body.

14. The arrowhead of claim 12, wherein the spurs provide aerodynamic stability to the arrow in flight.

15. The arrowhead of claim 12, wherein the spurs impact the target forcing the movable blades rearwardly to orient the sharpened edges facing forwardly.

16. The arrowhead of claim 12, wherein the retracted position when the spurs are adjacent the fixed blades allows the safe handling of the arrowhead since the sharpened edges on the movable blades are concealed in the slots in the support body.

17. The arrowhead of claim 12, wherein each of the movable blades comprise an elongate blade member having a first end with the spur and a second end having a pivot point, the pivot point secured to the body, and the second end further having a flat portion to limit the rearward movement of the movable blade.

18. The arrowhead of claim 17, wherein two said movable blades may be pivotally fastened to the support body with a single screw.

19. The arrowhead of claim 17, wherein each of said movable blades is pivotally secured to the support body with a fastener.

20. The arrowhead of claim 17, wherein the pivot point acts as a fulcrum on which the movable blades pivot to the deployed position.