Patent ID: 7537501

Claim:
A swimming fin having a blade extending from a shoe open at its rear side and a rear heel strap connected to the sides of the shoe by at least one buckle, the buckle comprising a base plate integral with the shoe, a buckle arm joined with connected to the strap so as to allow adjustment of the strap's tension, an intermediate lever connected pivotally to the base plate and the arm, a reversible attachment member for connecting the lever to the base plate to achieve closure of the buckle, and a disengageable articulation member, between the intermediate lever and the base plate, for achieving reciprocal engagement between them, a pivotal connection and, at the same time, allowing their separation in a direction opposite that of tensioning of the strap, whereby the lever is separable from the base plate following release of the reversible attachment member and disconnection of the articulation member, wherein the articulation member comprises at least one cavity with an at least partly circular internal profile, formed on at least one shoulder rising from the base plate, the cavity being closed on the side turned toward the arm connected to the strap and open on the opposite side, and at least one projection of the lever for engaging the cavity, the projection having a complementary shape for allowing reciprocal rotation.