Patent ID: 6916220
Filing Date: 2005-07-12
Classification: B63B

Abstract:
1. A replaceable fin system for an aquafoil, comprising: a pot having a slot therein and adapted to be fitted into the surface of the aquafoil; a first connection means extending into said slot; a fin having a leading edge, a trailing edge, a base, a tab extending from the base away from the fin and adapted to fit within said slot, said tab extending along the base of the fin from adjacent the leading edge to end at a point intermediate the leading and trailing edges, wherein a portion of the fin adjacent the trailing edge is adapted to remain free of the acquafoil to pivot dynamically in response to differing conditions; and a second connection means located on said tab, which releasably engages with said first connection means to retain said tab in said slot wherein said first connection means comprises two opposed arms, and the second connection means comprises a bulbous projection located on a neck of the tab and the two arms engage the neck behind the bulbous projection to abut against the bulbous projection to resist the vertical movement of the fin out of the slot, wherein the arms extend longitudinally along the slot and form a substantially c-shaped clamp in cross section and the bulbous projection is a rail extending longitudinally along the tab, with the neck being a longitudinally extending recess or recesses located between the rail and the base of the fin.