Patent ID: 9701371
Date: 2017-07-11
CPC Classifications: B63B

Claim:
1. A fin attachment structure for a surfboard, the fin attachment structure comprising: a fin comprising a groove base, the groove base comprising one or more pins and at least one plunger that is mounted on a side surface of the groove base, one or more of the pins of the fin being located at each of nose and tail areas of the groove base of the fin, the one or more pins at the nose area of the groove base being on a different-facing side surface of the groove base from the one or more pins at the tail area of the groove base; and a fin box having a hollow base, the hollow base having a width that is at least as great as a width of the groove base of the fin and a length that is at least as great as a length of the groove base, the fin box having one or more recess parts at one or more inner walls of the hollow base, the recess parts being disposed at locations that correspond to the locations of the pins of the fin to receive the one or more pins of the groove base of the fin when the fin is inserted into the fin box, wherein the plunger is adapted to couple the fin to the fin box by an elastic compression force when the fin is inserted into the fin box.