Surf fin fixing system
AssigneeFin Control Systems Pty. Limited
InventorBrian A. Whitty
Life of this patent
Estimating the term…
Abstract
A system for attaching fins (11) to surfboards and other surf craft utilizes fixing elements (12) embedded in the body of the board, these elements having slots (13) which receive tabs (18) extending from the end of the fin. The tabs are removably secured by grub screws (16) enabling fins to be removed for transport or upon damage.
Claims20
A surf craft including a body with a plurality of fixing elements embedded therein, each fixing element being of material of greater strength than that of the surf craft body and having a fixing cavity therein, a fin attached to the surf craft, said fin having a pair of lateral surfaces and an end surface, the end surface of the fin abutting against the lower surface of the body in the region of the respective fixing elements, the fin having a plurality of fixing formations extending from its end surface, each such formation being engaged within the cavity of a respective fixing element by releasable means laterally engaging said formation.
A surf craft including a body with a fixing element embedded therein, said fixing element being of material of greater strength than that of the surf craft body and having a fixing cavity therein, a fin attached to the surf craft, said fin having a pair of lateral surfaces and an end surface, the end surface of the fin abutting against the lower surface of the body in the region of said fixing element, the fin having a fixing formation extending from its end surface, said formation being engaged within the cavity of said fixing element by releasable means laterally engaging said formation, said releasable means applying lateral force to said formation, said fixing element having an outer end adjacent said lower surface of said body, said force being generated by means of a member inserted into said fixing element from said outer end, said member being a screw located in a passage extending from the outer surface of said fixing element to a side wall of said cavity.
A surf craft including a body with a fixing element embedded therein, said fixing element being of material of greater strength than that of the surf craft body and having a fixing cavity therein, a fin attached to the surf craft, said fin having a pair of lateral surfaces and an end surface, the end surface of the fin abutting against the lower surface of the body in the region of said fixing element, the fin having a fixing formation extending from its end surface, said formation being engaged within the cavity of said fixing element by releasable means laterally engaging said formation, said fixing element being a substantially cylindrical plug within a substantially cylindrical recess in said body.
A surf craft including a body with a fixing element embedded therein, said fixing element being of material of greater strength than that of the surf craft body and having a fixing cavity therein, a fin attached to the surf craft, said fin having a pair of lateral surfaces and an end surface, the end surface of the fin abutting against the lower surface of the body in the region of said fixing element, the fin having a fixing formation extending from its end surface, said formation being engaged within the cavity of said fixing element by releasable means laterally engaging said formation, said surf craft body being covered by a skin of fibrereinforced plastics, an annular cavity provided in said body between the inner end of said fixing element and the skin of the craft on the side of the craft opposite the fin, said cavity being filled with a hardenable material.
Dependencies are inferred from the claim text.