Abstract

A dart includes, in sequence from a distal side to a proximal side thereof, a tip, a barrel, and a shaft. The shaft has a diameter which gradually decreases from a distal side toward a proximal side thereof. Three flights are attached and fixed to the proximal side of the shaft at equiangular positions around a center axis of the shaft, and proximal sides of the flights protrude from the shaft to be connected to one another. The shaft includes grooves, each of which is formed between the flights adjacent to each other in a circumferential direction of the shaft, and each of the grooves has an inner width which gradually increases from a side of the flights toward an axial direction center part of the shaft and which gradually decreases from the axial direction center part of the shaft toward a side of the barrel.

IPC Classes  ?

• A63B 65/02 - Darts, spears or the like

Abstract

This dart 10 comprises a tip 11, a barrel 12, and a shaft 13 in order from a tip side to a base side, wherein: the shaft 13 gradually decreases in diameter from the tip side to the base side; three flights 14 are mounted and fixed at equiangular positions around the axis of the shaft 13 on the base side of the shaft 13; the base sides of the flights 14 are projected from the shaft 13 and connected to one another; the shaft 13 has a groove 18 formed between the flights 14 adjacent to each other in the circumferential direction of the shaft 13; and the inner width of the groove 18 is gradually widened from the flight 14 side to the center of the shaft 13 in the axial direction, and gradually narrowed from the center of the shaft 13 in the axial direction to the barrel 12 side.

IPC Classes  ?

• A63B 65/02 - Darts, spears or the like