US2005202911A1PendingUtilityA1

Wet-proof ball structure

45
Priority: Mar 9, 2004Filed: Mar 9, 2004Published: Sep 15, 2005
Est. expiryMar 9, 2024(expired)· nominal 20-yr term from priority
Inventors:Wen-Cheng Yang
A63B 37/12A63B 2243/0037A63B 37/06A63B 2209/023A63B 2225/60A63B 45/00A63B 2037/087
45
PatentIndex Score
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Claims

Abstract

A water-proof ball structure comprises a ball core; at least two water-proof elastic bags enclosing the ball core; each water-proof elastic bag having at least one opening, the openings of the at least two water-proof elastic bags being not overlapped; and a cover enclosing the at least two water-proof elastic bags. Each water-proof elastic bag is made of two sheet, each sheet has a shape like “8”. If the water-proof elastic bag does not enclose the ball core, the volume of each water-proof elastic bag is smaller than that of the ball core.

Claims

exact text as granted — not AI-modified
1 - 3 . (canceled)  
   
   
       4 . A water-proof ball structure comprising: 
 a ball core;    at least two water-proof elastic bags enclosing the ball core; each water-proof elastic bag having at least one opening, the openings of the at least two water-proof elastic bags being not overlapped; and    a cover enclosing the at least two water-proof elastic bags;    a yarn layer enclosing the two water-proof elastic bag; and    a cover enclosing the yarn layer; the cover being made of two sheets; each sheet having a shape like “8”.    
   
   
       5 . The water-proof ball structure as claimed in  claim 4 , wherein if the water-proof elastic bag does not enclose the ball core, the volume of each water-proof elastic bag is smaller than that of the ball core.

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