Ammunition and explosives – Projectiles – Composite
Reexamination Certificate
2011-03-08
2011-03-08
Bergin, James S (Department: 3641)
Ammunition and explosives
Projectiles
Composite
C102S525000, C102S524000, C102S517000
Reexamination Certificate
active
07900561
ABSTRACT:
A projectile includes a leading part formed by a tip, a tip base, and a leading rod. A trailing part includes a main base, a truncate base, and a trailing rod. A leading end of a cylindrical interface abuts an annular shoulder where the tip meets the tip base and a trailing end abuts an annular shoulder where the main base meets the truncate base. The tip base and the truncate base respectively support the leading and trailing ends of the cylindrical interface. A medial extent of the cylindrical interface is unsupported by the leading and trailing rods and is deformed radially inwardly by lands in a barrel when the projectile is fired. The leading and trailing ends of the cylindrical interface maintain contact with the lands and the medial extent does not, reducing friction between the projectile and the barrel without sacrificing spin of the projectile.
REFERENCES:
patent: 40153 (1863-10-01), Billings
patent: 2322751 (1943-06-01), Studler
patent: 2946261 (1960-07-01), Crockett
patent: 3348486 (1967-10-01), Rapp
patent: 3913489 (1975-10-01), Travor et al.
patent: 3952657 (1976-04-01), Kaltmann
patent: 5686693 (1997-11-01), Jakobsson
patent: 6305293 (2001-10-01), Fry et al.
patent: 6317946 (2001-11-01), Beal
patent: 6439125 (2002-08-01), Carter
patent: 7207275 (2007-04-01), Oertwig
patent: 7219607 (2007-05-01), Oertwig
patent: 7222573 (2007-05-01), Pontieri
patent: 7451706 (2008-11-01), Meyer
patent: 7748325 (2010-07-01), Marx
patent: 2005/0183617 (2005-08-01), MacDougall
patent: 2006/0027128 (2006-02-01), Hober
patent: 2007/0089628 (2007-04-01), Elder
patent: 2007/0089629 (2007-04-01), Marx
Bergin James S
Hopen Anton J.
Liberty Ammunition, LLC
Smith & Hopen , P.A.
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