Patent ID: 6872175
Filing Date: 2005-03-29
Classification: A63B

Abstract:
1. An exercise balance trainer comprising: a hard board having a planar first surface, a planar second surface opposite to said first surface, and a central opening extending through said hard board; a resilient ball body connected to said hard board, said ball body having a first curved wall with a first rim, a second curved wall with a second rim connected fixedly to said first rim so as to define an air-receiving chamber between said first and second curved walls, and an annular flange connected to said board and a junction of said first and second rims, said first curved wall projecting from said first surface of said board, said second curved wall projecting from said second surface of said board, said first and second rims having the same diameter, said first curved wall having a maximum height that is not greater than one-half of said diameter of said first rim, said second curved wall having a maximum height that is not greater than one-third of said diameter of said second rim; and an annular first clamping plate sleeved on said first curved wall, and an annular second clamping plate sleeved on said second curved wall, said first and second clamping plates being interconnected threadedly so as to clamp said board and said flange therebetween.