Ammunition and explosives – Shells – Shrapnel
Reexamination Certificate
2011-04-26
2011-04-26
Hayes, Bret (Department: 3641)
Ammunition and explosives
Shells
Shrapnel
C102S506000
Reexamination Certificate
active
07930978
ABSTRACT:
A forward firing fragmentation warhead is constructed with casing materials that are pulverized upon detonation of the explosive. As a result, the lethality radius of the pulverized case fragments is no greater than that of the gas blast, thus reducing potential collateral damage. Warhead lethality may be improved by forming the fragmentation layer and explosive with dome-shapes that approximately match the shape of the advancing pressure wave. This increases fragment velocity and improves the uniformity of the fragment distribution over the forward-firing pattern. A variable-thickness pattern shaper may be placed between the fragmentation layer and explosive to provide additional shaping of the forward-firing pattern. Warhead weight and cost can be reduced by eliminating explosive at the aft end of the warhead that does not contribute to the total energy imparted to the fragments. More specifically, the aft section of the explosive and explosive containment structure may be tapered to approximately match the expansion of the pressure wave from the single-point aft detonation.
REFERENCES:
patent: 1272984 (1918-07-01), Mutro
patent: 3570401 (1971-03-01), Euker
patent: 3646888 (1972-03-01), Posson et al.
patent: 3648610 (1972-03-01), van Zyl et al.
patent: 3750587 (1973-08-01), Walde
patent: 3785293 (1974-01-01), Barr et al.
patent: 3818833 (1974-06-01), Throner
patent: 3877383 (1975-04-01), Flatau
patent: 3968748 (1976-07-01), Burford et al.
patent: 3970005 (1976-07-01), Rothman
patent: 3974771 (1976-08-01), Thomanek
patent: 3977327 (1976-08-01), Brumfield et al.
patent: 3978796 (1976-09-01), Hackman
patent: 4106411 (1978-08-01), Borcher et al.
patent: 4463678 (1984-08-01), Weimer et al.
patent: H000540 (1988-11-01), Caponi
patent: 4882996 (1989-11-01), Bock et al.
patent: H001011 (1992-01-01), Kline
patent: 5090324 (1992-02-01), Bocker et al.
patent: 5157225 (1992-10-01), Adams et al.
patent: 5313890 (1994-05-01), Cuadros
patent: 5320044 (1994-06-01), Walters
patent: 5323707 (1994-06-01), Norton et al.
patent: 5337673 (1994-08-01), Koontz et al.
patent: 5419024 (1995-05-01), Koontz et al.
patent: 5544589 (1996-08-01), Held
patent: 5594197 (1997-01-01), Lindstadt et al.
patent: 5668346 (1997-09-01), Kunz et al.
patent: 6484642 (2002-11-01), Kuhns et al.
patent: 6758143 (2004-07-01), Ritman et al.
patent: 7004075 (2006-02-01), Ronn et al.
patent: 2006/0180045 (2006-08-01), Ronn et al.
patent: 2006/0266247 (2006-11-01), Gilliam et al.
patent: 3900442 (1990-07-01), None
patent: 4011243 (1996-05-01), None
patent: 4238482 (1999-03-01), None
patent: 19749168 (1999-05-01), None
Christanson Kim L.
Dupont James H.
Kim Henri Y.
Walter Travis P.
Gifford Eric A.
Hayes Bret
Raytheon Company
Tillman, Jr. Reginald
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