Ball and method of making same
Ball Patent #: 4463951
ApplicationNo. 06/611918 filed on 05/18/1984
US Classes:473/601And having intermediate layer between core and cover or having core or cover composed of plural layers
ExaminersPrimary: Marlo, George J.
Attorney, Agent or Firm
International ClassesA63B 37/00 (20060101)
A63B 37/12 (20060101)
AbstractA durable, composite safety ball is disclosed which is formed with a soft, resilient, substantially closed-cell plastic foam core. The safety ball, including the cover, has a type A durometer less than about 60 and preferably in the range of about 25 to about 45. Preferably the core is surrounded by an inner skin which is formed to substantially prevent the entry of water into the foam of the core and, together with an outer heavy, tightly knit nylon cover, to provide sufficient strength to hold the soft cellular plastic foam together as a unit. The soft foam core is preferably a urethane foam and enables the formation of balls which have a performance similar to regulation baseballs and softballs and yet will not produce a substantial risk of injury to players or risk of property damage. Examples of balls having a circumference ranging from 9 to 16 inches, a weight ranging from 3.25 to 8.2 ounces and having a rebound percentage in excess of about 23 percent and preferably not greater than about 31 percent are disclosed. The composite safety ball is also sting-free and has a long useful life.