The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 01, 2011
Filed:
Feb. 11, 2005
David Fair, Parsippany, NJ (US);
Dilhan M. Kalyon, Teaneck, NJ (US);
Sam Moy, Parsippany, NJ (US);
Leon R. Manole, Great Meadows, NJ (US);
David Fair, Parsippany, NJ (US);
Dilhan M. Kalyon, Teaneck, NJ (US);
Sam Moy, Parsippany, NJ (US);
Leon R. Manole, Great Meadows, NJ (US);
The United States of America as represented by the Secretary of the Army, Washington, DC (US);
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.