Molded archery arrow for an archery bow with a metal barrel
View Patent ↗A novel molded archery arrow ( 100 ) includes a cylindrical steel shaft ( 101 ) with sharpened tip, a plastic ferrule ( 102 ) molded over the shaft ( 101 ), and cutting blades ( 103 ) serving as fletchings. The shaft ( 101 ) has a front end with a sharpened tip and a rear end with a stem, the stem having a smaller diameter than the front end of the shaft. The front end of shaft ( 101 ) includes indented rings ( 116 ) and the stem includes protruding rings ( 117 ) that affix shaft ( 101 ) to plastic ferrule ( 102 ) during the molding process. Since the ferrule ( 102 ) of arrow ( 100 ) is plastic, arrow ( 100 ) slides with little or no friction when launched from metal barrel ( 206 ) of a crossbow ( 200 ). In the molding process for arrow ( 100 ), an open space ( 115 ) is created by a tapered pin inserted into an arrow mold opposite the rear end of the stem of shaft ( 101 ). The tapered pin engages an indented portion of the stem and holds the shaft ( 101 ) in position in the mold while plastic material in liquid form (liquefied at high temperature) is pumped into the mold to form arrow ( 100 ). The mold also includes slots for positioning blades ( 103 ) so that holes ( 106 ) in blades ( 103 ) are inside the mold. Hot plastic is pumped into the mold through the tapered pin, coats the front end and stem of shaft ( 101 ) to create the ferrule ( 102 ) and extends through holes ( 106 ) in blades ( 103 ) to hold them in place.
1. An arrow that can be launched from an archery bow with a metal barrel, comprising:
first and second blades, each having a sharpened outer edge and a an inner edge with at least two holes;
a shaft having a front end with a tip and a rear end with a stem, the stem having of smaller diameter than the front end of the shaft; and
a ferrule comprised of a synthetic material that is adapted to be molded over the front end and stem of the shaft, at least partially over the inner edge of the first and second blades, and through the holes in the first and second blades for retaining them.
2. The arrow according to claim 1 , wherein each of the first and second blades is comprised of stainless steel.
3. The arrow according to claim 1 , further including a nock attached at a rear end of the ferrule.
4. The arrow according to claim 1 , wherein the first and second blades each have a first side that is sharpened and a second side that is flat.
5. The arrow according to claim 1 , wherein the first and second blades each have a first side that is sharpened and a second side that is sharpened.
6. The arrow according to claim 1 , wherein the ferrule is plastic and has a plastic ridge on each side of each of the first and second blades.
7. An arrow that can be launched from an archery bow with a metal barrel, comprising:
first and second blades, each having a sharpened outer edge and a an inner edge with at least two holes;
a shaft having a front end with a tip and a rear end having a stem, the stem having of smaller diameter than the front end of the shaft; and
a ferrule comprised of plastic that is adapted to be molded over the front end and stem of the shaft, at least partially over the inner edge of the first and second blades, and through the holes in the first and second blades for retaining them, whereby the plastic ferrule engages the metal barrel when launched from the archery bow.
8. The arrow according to claim 7 , wherein each of the first and second blades is comprised of stainless steel.
9. The arrow according to claim 7 , further including a nock attached at a rear end of the ferrule.
10. The arrow according to claim 7 , wherein the first and second blades each have a first side that is sharpened and a second side that is flat.
11. The arrow according to claim 7 , wherein the first and second blades each have a first side that is sharpened and a second side that is sharpened.
12. The arrow according to claim 7 , wherein the ferrule has a plastic ridge on each side of each of the first and second blades.