초록 ▼

A governed performance metal shell bat designed to ensure ball exit speed approximating and not exceeding that of a wood bat of comparable weight and geometry is comprised of a thin wall metal shell filled such as aluminum or titanium or alloys thereof with light weight semi-rigid material such as a

A governed performance metal shell bat designed to ensure ball exit speed approximating and not exceeding that of a wood bat of comparable weight and geometry is comprised of a thin wall metal shell filled such as aluminum or titanium or alloys thereof with light weight semi-rigid material such as a syntactic foam in the hitting area, the bat having longitudinal flexibility approximating that of a similarly shaped wood bat and the filler material having a density and hardness correlated with the thickness of the metal shell wall in the hitting area.

대표청구항 ▼

1. A governed performance metal shell ball bat comprising:a) a metal shell having a maximum outside diameter in a ball hitting area and a ratio of said maximum outside diameter to wall thickness of the shell in the hitting area in the range of from 40:1-90:1; and b) a filler substantially filling th

1. A governed performance metal shell ball bat comprising:a) a metal shell having a maximum outside diameter in a ball hitting area and a ratio of said maximum outside diameter to wall thickness of the shell in the hitting area in the range of from 40:1-90:1; and b) a filler substantially filling the bat shell in said hitting area, said filler having a density in the range of 10-30 lbs./cu. ft. and a hardness on a Shore D test apparatus in the range of 25-65.