Amusement devices: games – Aerial projectile game; game element or accessory therefor... – Projectile backstop
Patent
1978-02-15
1980-07-15
Shapiro, Paul E.
Amusement devices: games
Aerial projectile game; game element or accessory therefor...
Projectile backstop
A63B 6502
Patent
active
042124646
ABSTRACT:
A dart body for a hand thrown dart is provided with a series of parallel circumferential grooves that provide improved resistance to slippage when the dart is propelled forward, but also provide an improved smooth release of the dart when it is released. This is accomplished with grooves shaped with a 90.degree.0 or acute angle juncture on the forward or thrust wall of the groove and an obtuse blended angle at the juncture of the aft or rearward wall of the groove with the dart body surface.
Fansteel Inc.
Shapiro Paul E.
LandOfFree
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