Patent ID: 7871344
Filing Date: 2011-01-18
Classification: F42B

Abstract:
1. A dart for hand throwing at a dart board, the dart comprising: a) a tip extending lengthwise along a center longitudinal axis, the tip having a circular cross-section with opposite ends, one end of the tip having an integrally fixed point for engaging the dart board, the opposite end of the tip having a male thread length extending rearwardly from the free end thereof and with a major diameter smaller than the outer circular diameter of the tip adjacent thereto; b) an elongated body, with a generally cylindrical outer wall extending lengthwise along the longitudinal axis, and with a forward end and an opposite tail end; the forward end of the body being formed with an open internal thread length extending rearwardly from the free end thereof, coaxial with the outer wall, and receiving the threaded end of the tip; the tail end of the body being formed with an open bore length extending forwardly from the free end thereof, coaxial with the outer wall; and c) a tail with a forward end stub, a semi-spherical back, and a shoulder therebetween; the forward end stub being pressed snugly into the open bore in the tail end of the body, the shoulder of the tail engaging snugly against the tail end of the body, and the spherical back being formed having an outer radius approximately equal to the radius of the outer wall of the body a the tail end thereof, whereby the tail end of the dart is established as a continuously, smoothly contoured, rounded closed end; and; d) wherein the entire dart is contained within an imaginary cylindrical envelope that extends coincidentally from the outer wall of the body to promote end-over-end tumbling of the dart when thrown at the dart board.