US 7,357,767 B2
Adjustable balance board with freely moveable sphere fulcrum
Elysia Tsai, 100 S. Seranado St., Unit 105, Orange, Calif. 92869 (US)
Filed on Jul. 26, 2006, as Appl. No. 11/493,243.
Claims priority of provisional application 60/703197, filed on Jul. 28, 2005.
Prior Publication US 2007/0027010 A1, Feb. 01, 2007
Int. Cl. A63B 22/14 (2006.01)
U.S. Cl. 482—146 22 Claims
OG exemplary drawing
 
1. A balance board comprising:
a board having a top side, a bottom side, and an outer circumference;
a railing attached to the bottom side of the board;
a rigid sphere freely placed within the railing;
an end stop attachable to different portions of the railing; and
a rigid semi-sphere having a planar side and a spherical side, wherein the planar side is attachable to different portions of the end stop.