Ammunition and explosive-charge making – Miscellaneous
Patent
1992-03-04
1993-07-13
Jordan, Charles T.
Ammunition and explosive-charge making
Miscellaneous
419 42, 419 68, C06B 2100, B22F 316
Patent
active
052275760
ABSTRACT:
Method and apparatus whereby complex patterns are pressed into the interior of a part formed of compactible material. A flexible, pre-fabricated pattern form bearing the inverse of a desired pattern is wrapped around a conventional mandrel and this assembly is loaded inside of an isostatic pressing bag with a material charge. After compaction, the mandrel is separated from the pattern form, leaving the pattern form behind in the compact. The pattern form is then peeled, pulled, or otherwise removed from the interior of the compact, leaving behind the desired on the compact interior. Alternatively, a collapsible or melt-away mandrel with the inverse of a desired pattern formed on its exterior is employed to form the desired pattern on the interior of a compacted part.
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patent: 5012853 (1991-05-01), Bihlmaier
patent: 5066454 (1991-11-01), Hanson
Industrial Materials Technology
Jordan Charles T.
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