Explosive and thermic compositions or charges – Processes of making
Reexamination Certificate
2011-03-01
2011-03-01
McDonough, James E (Department: 1731)
Explosive and thermic compositions or charges
Processes of making
C149S002000, C149S017000, C149S018000, C149S109400
Reexamination Certificate
active
07896989
ABSTRACT:
Methods of making cross sectional, functionally-graded munitions propellants exhibiting various distributions of particle concentrations and burn rate, including having a fast burning core and slower burning outer layer(s). Unlike prior art methods of preparing such munitions, propellants prepared according to our inventive method(s) may be performed substantially as a single extrusion step or as a few processing steps, without requiring the time, expense and/or difficulties that characterized familiar, laminating methods and methods which use multiple extruders. Our inventive method advantageously employs a demixing phenomenon that, prior to our inventive application and teaching, has been considered quite undesirable in the preparation of propellants where uniformity and well-mixedness have been propellant attributes widely sought after.
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Fair David
Kalyon Dilhan M.
Manole Leon R.
Moy Sam
Goldfine Henry S.
McDonough James E
The United States of America as represented by the Secretary of
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