Soft shell practice golf ball

Abstract

A golf ball designed for practicing indoors. The golf ball comprises a soft-shelled flexible hollow spherical cage, a stitched hollow spherical cover enclosing the hollow spherical cage and granules enclosed in the hollow spherical cage. The spherical cage comprises a plurality of holes on its surface. The spherical cover is made by stitching a thread into a hollow spherical shape. Before closing the spherical cover, the spherical cage is inserted into it. The granules are then inserted in the spherical cage through the holes in its surface. Following which, the spherical cover is completely sealed by further stitching the thread.

1 . A soft shell practice golf ball comprising;
 a. a flexible hollow spherical cover;   b. a flexible hollow spherical cage, comprising a plurality of holes on its surface within the hollow spherical cover; and   c. granules within the cover and cage.   
   
   
       2 . The soft shell practice golf ball of  claim 1 , wherein the outer spherical cover is made by stitching together a thread. 
   
   
       3 . The soft shell practice golf ball of  claim 1 , wherein the granules occupy 50 to 99 percent of the volume of the golf ball. 
   
   
       4 . The soft shell practice golf ball of  claim 1 , wherein the outer spherical cover is made with natural fibers, including cotton, or synthetic fibers, including nylon or polyester thread. 
   
   
       5 . The soft shell practice golf ball of  claim 1 , wherein the outer spherical cover is made by stitching together a material. 
   
   
       6 . The soft shell practice golf ball of  claim 1 , wherein the hollow spherical cage is made of an elastic material, including rubber. 
   
   
       7 . The soft shell practice golf ball of  claim 1 , wherein the granules are comprised of synthetic materials including plastic and nylon, natural materials including seeds or sand granules, or a combination of natural and synthetic materials. 
   
   
       8 . The soft shell practice golf ball of  claim 1 , wherein the diameter of the hollow spherical cage is between 20 and 50 millimeters. 
   
   
       9 . The soft shell practice golf ball of  claim 1 , wherein the diameter of each of the holes in the hollow spherical cage is between 1 and 10 millimeters. 
   
   
       10 . The soft shell practice golf ball of  claim 1 , wherein the diameter of the golf ball is between 10 and 60 millimeters. 
   
   
       11 . The soft shell practice golf ball of  claim 8 , wherein the diameter of the hollow spherical cage is 38.5 millimeters, the diameter of each of the holes in the hollow spherical cage is 3 millimeters, and the diameter of the golf ball is 43 millimeters. 
   
   
       12 . The soft shell practice golf ball of  claim 1 , wherein the diameter of one of the holes in the hollow spherical cage is at least 10 mm, and the diameter of the rest of the holes in the hollow spherical cage is at least 3 mm. 
   
   
       13 . The soft shell practice golf ball of  claim 1 , wherein the hollow spherical cage is made of an elastic material, including rubber. 
   
   
       14 . The soft shell practice golf ball of  claim 1 , wherein the granules are made of plastic. 
   
   
       15 . A method of making a soft shell practice golf ball comprising the steps of:
 a. providing a flexible hollow spherical cage including a plurality of holes on its surface;   b. providing a hollow spherical cover, leaving a small opening in its surface, the hollow spherical cover being dimensioned to enclose the hollow spherical cage;   c. inserting the hollow spherical cage into the hollow spherical cover through the opening;   d. filling granules in the hollow spherical cage through the small opening of the hollow spherical cover and the holes in the hollow spherical cage, so that the granules occupy a proportion of the volume of the golf ball; and   e. closing the small opening to fully enclose the hollow spherical cage and granules seal the golf ball and, thereby completely forming the outer spherical cover that tightly encloses the hollow spherical cage.   
   
   
       16 . The method of  claim 13 , wherein the hollow spherical cover is made by stitching together a thread. 
   
   
       17 . The method of  claim 14 , wherein the thread is a natural or synthetic fiber. 
   
   
       18 . The method of  claim 14 , wherein a crochet stitch is used to stitch the thread together to form the hollow spherical cover.