Title:
PRACTICE SPORT PROJECTILE HAVING A THROUGH HOLE
Document Type and Number:
WIPO Patent Application WO2003072204
Kind Code:
A9
Abstract:
Non-standard sport projectiles (10), in accordance with this invention, include at least one linear through hole (11). As this non-standard sport projectile (10) passes through the air, after being hit by, for example, a golf club, the non-standard sport projectile (10) spins. When the above-mentioned through hole (11) is generally aligned with the projectile's direction of flight, air passes through the through hole, and the aerodynamic characteristics of the non-standard sport projectile (10) are enhanced. When the through hole (11) is not aligned with the projectiles direction of flight the aerodynamic characteristics are reduced. As a result, the non-standard sport projectile (10) experiences rapidly repeating intervals of relatively high aerodynamic flight and relatively low aerodynamic flight as the non-standard sport projectile (10) spins around the center cross section of the through hole (11).
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Inventors:
BREAKER RICHARD C (US)
Application Number:
PCT/US2003/005306
Publication Date:
February 26, 2004
Filing Date:
February 20, 2003
Export Citation:
Assignee:
BREAKER RICHARD C (US)
BREAKER JOHN V (US)
BREAKER JOHN V (US)
International Classes:
A63B37/00; A63B43/00; A63B67/14; A63B69/36; A63B69/00; (IPC1-7): A63B69/36
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