Disposable broad head arrowhead

Description

BACKGROUND OF THE INVENTION

1. Technical Field

This device relates to arrowheads, specifically hunting metal arrowheads that are subject to damage and loss during use.

2. Description of Prior Art

Prior art devices of this type have been directed to a variety of replaceable arrowheads that typically have a number of steel razor-sharp blades on a support frame. Such metal arrowheads are complex, heavy and costly to manufacture and assemble. Such arrowhead blades are by nature brittle and subject to breakage and damage during use and after use.

Improved integral one piece molded plastic arrowheads have been developed to replace the metal fabrications to date.

Examples of such plastic arrowheads can be seen U.S. Pat. Nos. 4,234,191 and 5,137,282.

U.S. Pat. No. 4,234,191 is directed to an archery arrowhead having a one-piece construction with a reinforced blade shape, having multiple blades with edge blade serrations to enhance performance.

U.S. Pat. No. 5,137,282 discloses a plastic molded or thermal shaped arrowhead with a primary attaching blade, utilizing interlocks to form wedging ridges along its respected cutting edges.

SUMMARY OF THE INVENTION

A synthetic resin molded broad head arrowhead of unitary one-piece integral construction with a pair of tapered primary penetrating edge blade surfaces on a central core. A longitudinally aligned mounting shaft extends for threaded engagement with a thread receiving end opening in an arrow shaft. The opposing blade edges are provided with unique repetitive scallop edge pattern for enhanced cutting and penetration within a viable cost-to-use loss ratio.

DESCRIPTION OF THE DRAWINGS

FIG. 1 is a top plan view of the improved broad head arrowhead.

FIG. 2 is a bottom plan view thereof.

FIG. 3 is a right side end elevational view thereof.

FIG. 4 is a left side end elevational view thereof.

FIG. 5 is a front edge elevational view thereof; the rear being a mirror image.

FIG. 6 is an enlarged partial top plan view of the arrow edge.

DESCRIPTION OF THE PREFERRED EMBODIMENT

Referring to FIGS. 1 and 2 of the drawings, an improved broad head arrowhead 10 of the invention can be seen having a one-piece integral molded synthetic resin main body member 11, with oppositely disposed extending tapered blade edges 12,13 thereon. The main body 11 has a central longitudinal core portion 14 of increased annular dimension with an arrow end 15 an oppositely disposed base end 16.

The longitudinal axial core portion 14 is tapered along its dimension defining the transversally axially arrow end portion 15 and corresponding oppositely disposed wide mounting base end 16, thus defining a traditional ‘arrow’ head shape evident therein, and is well-known within the art.

An arrowhead end portion 17 is defined by oppositely disposed sharp and compound edges with tapered opposing surfaces 20A, 20B, 20C, 20D extending edge-wise from a central line C, defining a pair of solid edge surfaces 21,22 for initial penetrating contact, best seen in FIGS. 1 and 2 of the drawings.

Elongated recesses 23,24 are formed in the hereinbefore described axial core 14, forming a reinforced spine are for improved structural definition and target engagement performance, as will be understood by those skilled in the art.

Referring now to the main body member 11, the oppositely disposed extending tapered blade edges 12,13 are of a progressive edge configuration having a distinctive repetitive edge pattern of scallops S and edge points P, best seen in FIG. 6 of the drawings.

The respective blade edge patterns are identical and formed along the respective edges, having an equivalent area of reduced dimensional thickness at 25,26, which in this instance is formed by molding, as best seen in FIG. 3 of the drawings. This molding technique replicates the honed edge surface found in transitional metal edged blades (not shown) and assures a razor-like cutting edge is achieved on the molded surface.

The unique edge pattern, as best seen in FIGS. 1 and 6 of the drawings, begins inwardly from the arrow end part 15 with a first point P1 formed between a pair of scalloped surfaces S1, S2. A second edge P2 is defined by the scallop S2 and a large scallop S3. It will be evident that the scallops S1, S2, S3 therefore define an edge pattern that repeats longitudinally along the respective tapered blade edges 12,13. As noted, the blade edges 12,13 have respective molded “honed” areas 25,26 are in oppositely disposed surface orientation on the main body 11, extending along their respective blade edges 12,13 with their repetitive multiple point and scallop pattern, as herein and before described.

The arrowhead base end 16 as noted, defines a transversally wide bottom area with a concaved end surface 27 there along. A center line blade mounting extension shaft 28 extends integrally therefrom with an annular transition fitting 29 of increased annular dimension is in space relation to the base end 16 of the main body member 11.

An integral shaft 30 extends from the transition fitting 29 having a threaded end portion 31 extending to its free end at 32.

The threaded end shaft portion 31 is therefore adapted to thread-secure the arrowhead 10 to an arrowhead shaft 33, shown in broken lines in FIG. 2 of the drawings with a corresponding threaded receiving socket 34A formed there within.

This structural orientation will provide inter-changeability and replacement of the arrowhead 10 when required during use or when lost or damaged, as will be understood by those skilled in the art.

Therefore, it will be evident based on the above description that the improved broad head arrowhead 10 of the invention provides a unique one-piece integral monolithic molded synthetic resin broad head arrowhead configuration with unique integral tapered blade edges 12,13, utilizing a combination of repetitive pattern of scallop edged point formation along a longitudinal area of reduced edge surface dimension to emulate a honed metal surface.

It will thus be seen that a new and novel one piece molded synthetic resin broad head arrowhead 10 of the invention has been illustrated and described, and will be apparent to those skilled in the art that various changes and modifications may be made thereto without departing from the spirit of the invention.