초록 ▼

Exercise board comprising a generally rectangular platform having a laminated structure with a horizontally extending substantially rigid substrate and a pad of resilient material on the upper side of the substrate, and bars of resilient spring material extending along opposing side margins of the p

Exercise board comprising a generally rectangular platform having a laminated structure with a horizontally extending substantially rigid substrate and a pad of resilient material on the upper side of the substrate, and bars of resilient spring material extending along opposing side margins of the platform and permitting the platform to flex with a resilient action in response to the weight of a person who is exercising thereon. In some embodiments, the bars are arched and impart an upwardly convex contour to the platform. In others, the bars are eliminated, and the platform is fabricated of a fiber reinforced plastic and formed with an upwardly convex contour or arch.

대표청구항 ▼

[ What is claimed:] [1.] A portable, stand alone exercise board, comprising a generally rectangular, substantially rigid platform having an upper surface of sufficient lateral extent to receive a person who is exercising, a plurality of feet positioned toward corners of the platform on the under sid

[ What is claimed:] [1.] A portable, stand alone exercise board, comprising a generally rectangular, substantially rigid platform having an upper surface of sufficient lateral extent to receive a person who is exercising, a plurality of feet positioned toward corners of the platform on the under side of the platform and engagable with a supporting surface, and a pair of arched bars of resilient spring material selected from the group consisting of spring steel, fiberglass and polyurethane extending between the feet along opposing side margins of the platform and imparting an upwardly convex contour to the platform while permitting the platform to flex with a resilient action in response to the weight of a person who is exercising on the board.