US4593622A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Industrial cartridge with separated deflagrating components
Assignee: Dynamit Nobel AG
•
Filing: 1984-09-19
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Granted: 1986-06-10
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Expires: 2004-09-19
Abstract
Abstract An industrial cartridge has a case that contains a propellant charge of at least two successively arranged propellant charge powders deflagrating at differing speeds. The powders are separated from each other by a gas-permeable cover extending transversely to the case axis. The case of the cartridge contains a compressible seal at the opposite end to the base end of the case. An ignition-transmitting tube is axially arranged in the case. The tube includes, at the level of the second and/or last propellant charge powder as seen from the base, a cover which is thinner than the wall of the ignition-transmitting tube.
Inventors
- 👤 Joachim Fibranz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 05:38
CPC Classifications
F; F42; F42B; F42B3/00
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
129 words
An industrial cartridge comprising a case containing a propellant charge, a base in one end of the case, and an ignition-transmitting tube arranged axially in the case, said tube being positioned on the base with an igniter arranged therein; said propellant charge being composed of at least two successively arranged propellant charge powders deflagrating at differing speeds, the powders being separated by a gas-permeable cover extending transversely to the case axis; the ignition-transmitting tube being provided with a cover at the level of the propellant charge powder which is the second and/or last charge powder as seen from the base, the cover being thinner than the wall of the ignition-transmitting tube; and the case containing, at the other end opposite to the base, a seal of a compressible material.
Claim 2
Dependent Claim
129 words
An industrial cartridge comprising a case containing a propellant charge, a base in one end of the case, and an ignition-transmitting tube arranged axially in the case, said tube being positioned on the base with an igniter arranged therein; said propellant charge being composed of at least two successively arranged propellant charge powders deflagrating at differing speeds, the powders being separated by a gas-permeable cover extending transversely to the case axis; the ignition-transmitting tube being provided with a cover at the level of the propellant charge powder which is the second and/or last charge powder as seen from the base, the cover being thinner than the wall of the ignition-transmitting tube; and the case containing, at the other end opposite to the base, a seal of a compressible material.
Claim 3
Dependent Claim
49 words
An industrial cartridge according to claim 1, wherein the case contains, in succession, two propellant charge powders; the first propellant charge powder, located at the level of the cover of the ignition-transmitting tube, deflagrating more rapidly than the second propellant charge powder arranged after the first propellant charge powder.
Claim 4
Dependent Claim
16 words
An industrial cartridge according to claim 1, wherein the propellant charge powders exhibit differing grain sizes.
Claim 5
Dependent Claim
16 words
An industrial cartridge according to claim 2, wherein the propellant charge powders exhibit differing grain sizes.
Claim 6
Dependent Claim
26 words
An industrial cartridge according to claim 1, wherein the cover of the ignition-transmitting tube consists of a thin sheet having a thickness of about 0.2 mm.
Claim 7
Dependent Claim
26 words
An industrial cartridge according to claim 2, wherein the cover of the ignition-transmitting tube consists of a thin sheet having a thickness of about 0.2 mm.
Claim 8
Dependent Claim
26 words
An industrial cartridge according to claim 3, wherein the cover of the ignition-transmitting tube consists of a thin sheet having a thickness of about 0.2 mm.
Claim 9
Dependent Claim
21 words
An industrial cartridge according to claim 1, wherein the seal of the case is compressible to 25-30% of its original volume.
Claim 10
Dependent Claim
21 words
An industrial cartridge according to claim 2, wherein the seal of the case is compressible to 25-30% of its original volume.
Claim 11
Dependent Claim
21 words
An industrial cartridge according to claim 3, wherein the seal of the case is compressible to 25-30% of its original volume.
Claim 12
Dependent Claim
21 words
An industrial cartridge according to claim 5, wherein the seal of the case is compressible to 25-30% of its original volume.
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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) | 1989-06-09 | 1989-12-09 | 1990-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-06-09 | 1993-12-09 | 1994-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-06-09 | 1997-12-09 | 1998-06-10 | $7700.00 | Window Closed / Lapsed |