Patent ID: 6994370

Claim:
A rotatable board boot binding attachment device for securing a sports board boot binding to a sports board and for permitting angular adjustment and alternate rotation and nonrotation of the board boot binding relative to the board, comprising: a pair of rigid plates including a circular base plate adapted to be secured to the sports board and a rotatable plate for receiving the board boot binding to be secured thereto, the rotatable plate being positioned above the base plate and being rotatably connected to the base plate by a pivotable means, the rotatable plate being capable of coupling a board boot binding in a fixed position relative to the rotatable plate; a locking assembly for locking the rotatable plate in selected positions of angular adjustment relative to the base plate and for selectively maintaining the rotatable plate in either a locked mode, in which the rotatable plate is prevented from rotating relative to the base plate or a released mode, in which the rotatable plate is free to rotate relative to the base plate, the locking assembly including a locking ring formed by a plurality of locking holes extending through a circumferential portion of the base plate, an opening extending through the rotatable plate and alignable with the locking holes in the selected positions of angular adjustment, and a locking shaft capable of alternating between a locked position extending through the opening of the rotatable plate into one of the plurality of locking holes in the base plate to retain the rotatable plate in the locked mode wherein rotation of the rotatable plate is prevented, and an unlocked position with the locking shaft retracted from the one of the plurality of locking holes in the base plate to put the rotatable plate in the released mode, thereby permitting angular adjustment of the board boot binding relative to the board; a safety device incorporated in the base plate and the rotatable plate, the safety device capable of limiting the degree of relative rotation therebetween to permit the board boot to turn within a safe limit and prevent the board boot from turning beyond the safe limit, the safety device comprising one of the pair of rigid plates having a groove therein in the shape of an arc of a circle and the other of the pair of the rigid plates having a mating pin protruding therefrom, the pin engaging the groove and thereby limiting the degree of relative rotation of the rigid plates to the degree of the arc of the circular groove, and at least one movable stop positionable within the groove to divide the groove into at least two smaller arcs so that the pin is limited to rotating within at least one first smaller arc and alternately with the stop moved to allow the pin to relocate into at least one second smaller arc with the stop pin repositioned in the groove so that the pin is limited to rotating within the at least one second smaller arc.