Games using tangible projectile – Player held and powered – nonmechanical projector – per se,... – Bat
Patent
1997-08-16
2000-11-14
Graham, Mark S.
Games using tangible projectile
Player held and powered, nonmechanical projector, per se,...
Bat
A63B 5906
Patent
active
061462918
ABSTRACT:
A baseball bat having a tunable shaft and method for forming same. A hollow shaft is disposed between the barrel and the handle of a baseball bat, the hollow shaft having a plurality of hollow tunable sub-portions and transition portions disposed between the tunable sub-portions. The sub-portions form cylinders and the transition portions are frustoconical shapes providing for transition between the cylinders. The tunable sub portions are formed by rolling and thereafter swaging metal stock.
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