US4178207A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for production of combustible ammunition containers
Assignee: Wasag Chemie AG
•
Filing: 1977-09-15
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Granted: 1979-12-11
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Expires: 1997-09-15
Abstract
Abstract Apparatus for the production of combustible munition containers includes a normally vertical, hollow, water permeable but fiber-impermeable form having a circular cross-section. The form is rotated by a variable speed motor and the interior of the form is maintained under partial vacuum as aqueous suspensions are fed to adjacent axial zones of the form by pipes connected to separate suspension supply tanks so that, after dewatering, the resulting container is non-uniform in composition axially but is uniform in composition axially.
Inventors
- 👤 Wilhelm Oversohl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:15
CPC Classifications
D; D21; D21J; D21J7/00; C; C06; C06B; C06B21/00; C06B21/0033; F; F42; F42B; F42B5/00; F42B5/02; F42B5/18; F42B5/188; Y; Y10; Y10S; Y10S102/00; Y10S102/70
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
131 words
Apparatus for the production of combustible munition containers which are non-uniform in composition axially but which are uniform in composition transaxially, which comprises a normally vertical, hollow, water-permeable but fiber-impermeable form having a circular cross section; controllable means for rotating said form axially; controllable means for maintaining the interior of said form under partial vaccum; controllable means connected to a suspension supply means for contacting one axial zone of said form with an aqueous suspension of a mixture of fibrous propellant material, cellulose papermaking fibers and binder material therefor; controllable means connected to additional suspension supply means for contacting at least an adjoining axial zone of said form with an additional suspension of said materials in a different ratio; and controllable means for removing liquid from the interior of said form.
Claim 2
Dependent Claim
131 words
Apparatus for the production of combustible munition containers which are non-uniform in composition axially but which are uniform in composition transaxially, which comprises a normally vertical, hollow, water-permeable but fiber-impermeable form having a circular cross section; controllable means for rotating said form axially; controllable means for maintaining the interior of said form under partial vaccum; controllable means connected to a suspension supply means for contacting one axial zone of said form with an aqueous suspension of a mixture of fibrous propellant material, cellulose papermaking fibers and binder material therefor; controllable means connected to additional suspension supply means for contacting at least an adjoining axial zone of said form with an additional suspension of said materials in a different ratio; and controllable means for removing liquid from the interior of said form.
Claim 3
Dependent Claim
15 words
The apparatus according to claim 1 wherein said form has a water-permeable but fiber-impermeable bottom.
Claim 4
Dependent Claim
15 words
The apparatus according to claim 1 wherein said liquid removal means is a suction pipe.
Claim 5
Dependent Claim
21 words
The apparatus according to claim 1 wherein said form is within a chamber having orifices only for supply of said suspensions.
Claim 6
Dependent Claim
20 words
The apparatus according to claim 4 wherein the interior contours of said chamber parallel the exterior contours of said form.
References Cited (Backward Citations)
DE1446889C
Cited
US1551257A
Cited
US2460129A
Cited
US2940390A
Cited
US3205128A
Cited
US3210241A
Cited
DE1918320U
Cited
DE1907901U
Cited
US3594273A
Cited
US4073839A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-12-10 | 1983-06-11 | 1983-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-12-10 | 1987-06-11 | 1987-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-12-10 | 1991-06-11 | 1991-12-11 | $7700.00 | Window Closed / Lapsed |