Physical exercising ball and its fabrication method

Abstract

A physical exercising ball is constructed to include an inflatable inner tube, an outer leather cover, and multiple covering layers sandwiched in between the inflatable inner tube and the outer leather cover, each covering layer being formed of strips of rubber, the strips of rubber of one covering layer being overlapped on the strips of rubber of another covering layer.

What the invention claimed is:  
     
         1 . A physical exercising ball comprising an inner tube defining an air chamber, an outer leather cover, a thin primary base covering layer covered on the periphery of said inner tube within said outer leather cover, said primary base covering layer comprised of a plurality of strips of rubber, a secondary base covering layer covered on said primary base covering layer, said secondary base covering layer comprised of a plurality of strips of rubber overlapped on the strips of rubber of said primary base covering layer, at least one layer of intermediate covering sandwiched in between said secondary base covering layer and said leather outer cover, said layer of intermediate covering comprised of a plurality of strips of rubber overlapped on the strips of rubber of said secondary base covering layer, and an air valve radially extended from said inner tube to the outside of said outer leather cover.