Patent ID: 8246406
Filing Date: 2012-08-21
Classification: B63B

Abstract:
1. A fin box to be inserted in an underside of a water craft and for releaseably attaching a fin to the water craft, said fin box comprising: a body portion including a left sidewall, a right sidewall and an elongated slot between the left and right sidewalls, wherein the elongated slot is open at a first surface of said body portion and said elongated slot extends down between the sidewalls to a base in the body portion, wherein the base extends between the left and right sidewalls, and the extended slot has a median plane extending the length of the extended slot; a peripheral flange extending transversely from said body portion, a first portion of said flange defining an area of said first surface around said elongated slot; a second portion of said flange including a second lower surface and a third upper surface, said second surface and third surface are both offset from said first surface towards the base, and the second portion extends transversely from said body portion, wherein the second portion includes a left side extending transversely from the left sidewall and a right side extending transversely from the right sidewall, and said second lower surface and said third upper surface each extends to a peripheral extremity of said peripheral flange; wherein at least one of the second lower surface and the third upper surface of said peripheral flange is tapered at a transverse angle with the median plane, said taper being uniformly distributed across a width of at least one of the surfaces of said second portion of the peripheral flange.