Patent ID: 8052554

Claim:
An arrow for hunting, comprising: an arrow shaft having a predetermined length, and including: a nock provided on a first end of the arrow shaft such that a bowstring of a bow is inserted into the nock; and a shaft threaded part provided in a second end of the arrow shaft and having threads; a plurality of feathers positioned to be adjacent to the nock of the arrow shaft, and provided along an outer circumference of the arrow shaft at regular intervals, each of the feathers having a shape of a plate which protrudes from a surface of the arrow shaft; a connector including: a connecting threaded part fastened to the shaft threaded part of the arrow shaft in a threaded manner; a stopper extending from the connecting threaded part, and having a diameter larger than that of the connecting threaded part to be in contact with an end of the arrow shaft; and, a penetration threaded part extending from the stopper in a direction opposite to the connecting threaded part, and having a diameter smaller than that of the stopper, with threads formed on an outer circumference of the penetration threaded part; an arrowhead connected to the connector in such a way as to be opposite to the connecting threaded part, and having a sharp tip; a penetration rotary unit having on an inner circumference thereof a threaded part to be fastened to the penetration threaded part of the connector in a threaded manner, having a length shorter than that of the penetration threaded part, and having on an outer circumference thereof wings arranged at regular intervals, each of the wings having a shape of a triangular plate which is sharp at a tip thereof; and, a spring positioned between the stopper and the penetration rotary unit, and providing a restoring force to bias the penetration rotary unit toward the arrowhead.