초록 ▼

One or more variable angle fin box assemblies are sealed on the underside of a surfboard or the like that allows the angle of attack of the fin to be varied with the respect to the longitudinal axis of the surfboard, enabling the speed, stability and maneuvering characteristics of the surfboard to b

One or more variable angle fin box assemblies are sealed on the underside of a surfboard or the like that allows the angle of attack of the fin to be varied with the respect to the longitudinal axis of the surfboard, enabling the speed, stability and maneuvering characteristics of the surfboard to be adjusted or “tuned”by the rider in accordance with the rider\s level of skill, different surf conditions and wave sizes. The novel fin box assembly has a longitudinal channel to receive the base end of a conventional surfboard fin, and in which a device is provided for securing the movable fin in the selected adjusted angular position.

대표청구항 ▼

A variable angle fin and fin mounting box assembly for surfboards and other like boards comprising: a longitudinal fin box capable of being embedded fixedly in the underside of said surf board; said fin box having a vertical, longitudinally-extending closed-end channel to receive and house a base en

A variable angle fin and fin mounting box assembly for surfboards and other like boards comprising: a longitudinal fin box capable of being embedded fixedly in the underside of said surf board; said fin box having a vertical, longitudinally-extending closed-end channel to receive and house a base end of a fin; means in said box for angularly adjusting said fin within the fin box about a vertical centerline with respect to the longitudinal axis of the board to change the angle of attack of the fin to the water flow, and means for securing said fin in the fin box in a selected fixed angular position.