Rib-stiffened sports board

摘要

A sports board has a board body having a top surface and an opposed bottom surface, a binding attachment structure formed on or in the board body, and a plurality of ribs collectively having longitudinal portions and transverse portions each having a thickness and a height that are predetermined to provide the sports board with a preselected longitudinal, transverse, and torsional stiffness desirable for sliding on the snow.

主权项

1. A sports board for riding on snow, the sports board comprising:
a board body that includes a top surface and an opposed bottom surface that extend to a perimeter, the board body having a front end and a back end extending along a longitudinal axis, and opposed side edges that are separated along a transverse axis perpendicular to the longitudinal axis; a binding attachment structure formed in the board body; a plurality of ribs formed in the board body by the following process:
a) determining a desired longitudinal stiffness, transverse stiffness, and torsional stiffness for the board body such that the board body is optimized for riding on the snow;b) calculating a required area moment of inertia for a plurality of cross-sections of the sports board at different points along the length of the board body;c) creating a cross-sectional shape for each of the plurality of cross-sections of the board body;d) calculating an area moment of inertia of the each of the created cross-sectional shapes;e) modifying the created cross-sectional shapes of each of the plurality of cross-sections in an iterative manner with steps c)-e) until the calculated moment of inertia matches the required area moment of inertia for all of the plurality of cross-sections; andf) machining the sports board to form the plurality of ribs such that the plurality of ribs collectively provide the desired stiffness distribution; and wherein the board body is bent so that the front end and the back end angle upwardly.