Dart and dartboard therefor

Claim 1

A dart game consisting essentially of a dart comprising (a) a cone-shaped nose part having a base and a rounded tip, (b) a tail part bearing fins, (c) a stem part connecting said tail part with the base of said nose part, and (d) a ballast member mounted on said stem part intermediate said tail part and said nose part and in contact with said tail part, the distance between said tail part and nose part and the length of said ballast member, along said stem part, being so adjustable relative to one another that said length of the ballast member is shorter than said distance, said ballast member thereby being shiftable during flight from its position adjacent said tail part toward said nose part, and thereby producing an annular groove about said stem part between said ballast member and said tail part; and a dartboard comprising (α) a base part having a front face, (β) a layer of dart-holding projections on said front face, each of said projections protruding substantially at right angle from said front face and being elastically flexible and deflectable by the nose part of said dart when the latter penetrates into said layer, and (γ) engagement means on both said dart and said projections, said engagement means of said dart being adapted for engaging said engagement means of at least two of said projections when said dart has penetrated said layer and the blunt tip of said nose part is at or near said front face, said engagement means of said projections comprising annular beads at or near the free end of each of said projections at a height of the latter corresponding to the distance of said annular groove, formed at the rear of the ballast member of said dart, from the tip of the nose of said dart.