Patent US4250792A successfully refreshed from Google Patents.
US4250792A
Expired / Lapsed
US
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Process for the production of compacted explosive charges
Assignee: Dynamit Nobel AG
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Filing: 1979-03-01
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Granted: 1981-02-17
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Expires: 1999-03-01
Abstract
Abstract A process for the production of compacted explosive charges, especially hollow charges, wherein a pulverulent explosive is compacted to form a charge within a compacting chamber and an inert body is arranged in the charge, the inert body is arranged within the compacting chamber in a predetermined starting position, to be displaceable in the compacting direction; and the pulverulent explosive surrounding the inert body is compacted under displacement of the inert body.
Inventors
- 👤 Gunter Deigmuller
- 👤 Andreas Munk
- 👤 Bruno Rohe
- 👤 Manfred Strunk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 19:56
CPC Classifications
F; F42; F42B; F42B33/00; F42B33/02; F42B33/025; F42B1/00; F42B1/02; F42B1/036
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
106 words
A process for the production of compacted explosive charges, especially hollow charges, wherein a pulverulent explosive is compacted to form a charge within a compacting chamber and an inert body is arranged in the charge, characterized in that the inert body is a shaped member and is arranged within the compacting chamber in a predetermined starting position, to be displaceable in the compacting direction; and the pulverulent explosive for forming the charge including the portion surrounding the inert body is compacted under displacement of the inert body in a single pressure-molding operation, the pulverulent explosive being introduced into the compacting chamber prior to the pressure-molding operation.
Claim 2
Dependent Claim
106 words
A process for the production of compacted explosive charges, especially hollow charges, wherein a pulverulent explosive is compacted to form a charge within a compacting chamber and an inert body is arranged in the charge, characterized in that the inert body is a shaped member and is arranged within the compacting chamber in a predetermined starting position, to be displaceable in the compacting direction; and the pulverulent explosive for forming the charge including the portion surrounding the inert body is compacted under displacement of the inert body in a single pressure-molding operation, the pulverulent explosive being introduced into the compacting chamber prior to the pressure-molding operation.
Claim 3
Dependent Claim
29 words
A process according to claim 1, characterized in that the inert body is guided axially by means of a coaxially arranged mandrel during the displacement of the inert body.
Claim 4
Dependent Claim
23 words
A process according to claim 2, characterized in that the mandrel is shifted together with the inert body relatively to the compacting chamber.
Claim 5
Dependent Claim
44 words
A process according to one of claims 1, 2 or 3, characterized in that the pulverulent explosive is introduced into the compacting chamber along the run of the chamber, the chamber containing the inert body in a coaxial arrangement before introduction of said explosive.
Claim 6
Dependent Claim
132 words
A process, especially according to one of claims 1, 2 or 3, wherein the explosive charge is provided with a casing, a hollow charge insert, and a cover cap, the rear end of the cover cap extending into the front end of the casing being joined to this front end, characterized in that a predetermined amount of adhesive is applied to the inner surface of the front end of the casing and also to the outer surface of the rear end of the cap, and a portion of the adhesive is pressed, during the pushing together of casing and cap, against the front end of the insert in such a way that simultaneously with the gluing together of casing and cap, the insert is likewise fixed in position by the gluing step.
Claim 7
Dependent Claim
83 words
The process according to claim 1, characterized in that the inert body is made of a metal or a synthetic resin and the inert body is centrally arranged in the compacting chamber in the predetermined starting position to provide an annular gap between the body and an inner wall of the compacting chamber and thereafter the explosive required for forming the charge is introduced into the compacting chamber, the explosive flowing through the annular gap into an empty space underneath the inert body.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-02-17 | 1984-08-18 | 1985-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-02-17 | 1988-08-18 | 1989-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-02-17 | 1992-08-18 | 1993-02-17 | $7700.00 | Window Closed / Lapsed |