# US 8,771,113 B2 · Broadhead for improved rotation and bone-piercing capability

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- Number: US 8,771,113 B2
- Document ID: US8771113B2
- Status: Granted
- Kind: B2
- Application number: 13/759,720
- Filed: 2013-02-05
- Published: 2013-08-08
- Granted: 2014-07-08
- Earliest claimed: 2012-02-06
- Assignees: Medicine Bear Archery, LLC
- Applicants: Stephen C. Patton
- Inventors: Stephen C. Patton
- Web page: https://patentgrep.com/patent/US8771113B2

## CPC

- F42B 6/08: Arrow heads; Harpoon heads
- F42B: EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION (explosive compositions C06B; fuzes F42C; blasting F42D)

## Abstract

A broadhead for increased target penetrability in use with an arrow shaft. The broadhead includes a receiver that is configured to receive the arrow shaft. The receiver includes a central axis. The broadhead also includes a pair of oppositely-directed blades offset from the receiver central axis. The blades include a tapered geometry.

## Claims

### Claim 1

A broadhead for increased target penetrability in use with an arrow shaft, the broadhead having a unitary construction comprising:
a receiver configured to receive the arrow shaft, the receiver comprising a central axis;
a pair of oppositely-directed blades offset from the receiver central axis, the blades comprising a tapered geometry, wherein the pair of oppositely-directed blades do not extend over each other.

### Claim 2 (depends on 1)

The broadhead of claim 1, wherein the receiver comprises a hollow conical core.

### Claim 3 (depends on 2)

The broadhead of claim 2, wherein the pair of oppositely-directed blades each extend tangentially with respect to the receiver hollow conical core.

### Claim 4 (depends on 1)

The broadhead of claim 1, wherein the pair of oppositely-directed blades are obliquely-angled with respect to the receiver central axis.

### Claim 5 (depends on 1)

The broadhead of claim 1, wherein the pair of oppositely-directed blades comprise a base edge obliquely-angled with respect to the receiver central axis.

### Claim 6 (depends on 1)

The broadhead of claim 1, wherein the receiver comprises an outer surface that tapers with respect to the receiver central axis.

### Claim 7 (depends on 6)

The broadhead of claim 6, wherein the receiver outer surface comprises a generally conical geometry.

### Claim 8 (depends on 7)

The broadhead of claim 7, wherein the pair of blades extend from the generally-conical receiver outer surface.

### Claim 9 (depends on 1)

The broadhead of claim 1, wherein the pair of oppositely-directed blades are configured to cause rotational movement when receiving a downward air force.

### Claim 10

A broadhead for increased target penetrability, the broadhead comprising:
a ferrule having a unitary construction comprising a base end, a sharp tip and body with a central axis, the ferrule comprising a tapered outer surface from the base end to the sharp tip;
a pair of blades offset from the ferrule body central axis, the pair of blades extending the length of the ferrule body, wherein the pair of blades do not extend over each other.

### Claim 11 (depends on 10)

The broadhead of claim 10, wherein the pair of blades extend tangentially from the ferrule outer surface.

### Claim 12 (depends on 10)

The broadhead of claim 10, wherein the ferrule comprises a conical outer surface.

### Claim 13 (depends on 10)

The broadhead of claim 10, wherein the pair of blades comprise a sloped edge.

### Claim 14 (depends on 10)

The broadhead of claim 10, wherein the broadhead is symmetrical.

### Claim 15 (depends on 10)

The broadhead of claim 10, wherein the pair of blades comprise a base edge and an outer edge comprising a chisel slope.

### Claim 16 (depends on 10)

The broadhead of claim 10, wherein the pair of blades are positioned at an oblique angle with respect to the ferrule body central axis.

### Claim 17 (depends on 10)

The broadhead of claim 10, wherein the pair of blades comprises a substantially consistent thickness.

### Claim 18 (depends on 10)

The broadhead of claim 10, wherein the pair of blades are configured to cause rotational movement when receiving a downward air force.

### Claim 19

A broadhead for increased target penetrability, the broadhead comprising:
a body comprising a tapered outer surface, the body having a unitary construction comprising a base and a tip;
a pair of blades extending tangentially from opposite positions on the body outer surface, the pair of blades comprising a base edge and a tapered outer edge extending from the base edge to the body, wherein the pair of oppositely-directed blades do not extend over each other.