US20130047970A1 - Speargun band cord wishbone protector - Google Patents

Abstract

A wishbone protector that is applied to speargun wishbones made of cord and protects the cord from cutting or breaking off when used with speargun shafts. The protector is placed around the cord to prevent the wishbone from snapping or breaking after it's continuously fired from the speargun.

Description

TECHNICAL FIELD
• The invention relates to speargun wishbones that traditionally are made of metal or synthetic cord used for spearguns that are rubber or band powered. These wishbones are used at the end of a band or rubber sometimes called tubing which provides the propelling force attached to the front of the gun. Wishbones are fitted to the bands which are pulled by the diver to engage the “wishbones” in notches in the spears just before where the trigger is located. This then makes the speargun “loaded”.
• Speargun bands are engaged to the shaft of the speargun with a wishbone currently made of stainless steel or synthetic cord. Speargun bands propel the spear after it's fired. The wishbones are engaged in the notches of the spear however, wishbones of any material have tendencies to wear out or break after continued use.
• If made of stainless steel snapping wishbones may cause fingers to be cut if it breaks or slips upon engaging. Such problems occur even if the diver/user of the speargun is wearing gloves.
SUMMARY OF THE INVENTION
• A wishbone cord is an alternative to stainless steel either made of advanced fibers for added strength. Its downside however is the tendency of the cord to cut when force is applied. Therefore welded fin tabs or smooth shaft pins are currently used with cord wishbones to prevent the wishbones from cutting. Unfortunately welded fin tabs and pins although currently necessary for cord wishbones are more expensive than notched shafts thus increasing the overall price of Spearguns that use cord wishbones.
• In light of the foregoing, the present invention covers all types of protector that is placed on, over, around and inside the cord that is presently used by spear divers. It provides a protector to any type of wishbone cord available in the market which makes the cord longer lasting, more durable, quieter, safer and most importantly cut resistant against the shaft.
• A further aspect of the invention is the protector is made of a thin wire of spring or coils that is wrapped around or a plastic sleeve that goes over the cord making it cut resistant.
• Other advantages and meritorious features of the present invention will become more fully understood from the following description of the preferred embodiments, the appended claims and the drawings, a brief description of which follows.
BRIEF DESCRIPTION OF THE DRAWINGS
• FIG. 1 is an overview of the cord available in the market with the wishbone cord protector placed outside
• FIG. 2 is a side view of the cord with the protector placed outside the wishbone cord.
• FIG. 3 is another side view of the cord with the protector placed inside the wishbone cord
• FIG. 4 is a cross sectional view of the protector placed inside the wishbone cord.

Claims (3)

1. A wishbone protector that will prevent the wishbone made of cord from snapping or breaking after it's fired from the speargun.

2. The effect of the protector that will reinforce the wishbone to make it durable, cut resistant and longer lasting than the regular cord wishbones.

3. The benefits of the protector to the cord type wishbone makes it quieter, safer and less expensive than 100% stainless steel wishbones currently used. This serves as an alternative to stainless steel wishbones that are not only expensive but are also dangerous to users as they may snap causing cuts and other injuries relative to its use.

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