Games using tangible projectile – Projectile – per se; part thereof or accessory therefor – Having solid core within outer cover; core or cover therefor
Patent
1994-01-26
1998-08-04
Wong, Steven B.
Games using tangible projectile
Projectile, per se; part thereof or accessory therefor
Having solid core within outer cover; core or cover therefor
A63B 3700
Patent
active
057885915
ABSTRACT:
A practice baseball having a circumference in the range of approximately 65% to 90% of the circumference of an official league baseball and having a weight in the range of approximately 70% to 85% of the weight of an official baseball as required for use in league games by Rule 1.09 of the Official Baseball Rules. Use of the smaller and lighter practice baseball for batting practice should improve the batting skills of a player due to the greater difficulty of hitting the smaller practice baseball. The practice baseball has the same durability and resiliency as an official baseball because it is constructed in a similar manner. The resiliency of the practice baseball is achieved by wrapping the core of the baseball with materials of a tension sufficient to provide a proper coefficient of restitution, one that is similar to the coefficient of restitution of an official baseball.
REFERENCES:
patent: 2278649 (1942-04-01), Dickson et al.
patent: 4201384 (1980-05-01), Barber
patent: 4211407 (1980-07-01), Tomar
patent: 4286783 (1981-09-01), Newcomb et al.
patent: 4614339 (1986-09-01), Schanwald
Worth Catalogue, "Junior Balls", Jan. 9, 1976, p. 7.
Decker Products Co.
Frederiksen Mark D.
Wong Steven B.
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