US4944224A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical igniting medium
Assignee: Dynamit Nobel AG
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Filing: 1989-04-10
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Granted: 1990-07-31
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Expires: 2009-04-10
Abstract
Abstract An igniting medium incorporating a support member, the latter of which is passed through by electrical leads extending towards an ignition bridge. The support member is constructed as a shunt-capacitance which is connected to the electrical lead lines for the ignition bridge.
Inventors
- 👤 Kurt Fiedler
- 👤 Bernhard Kratz
- 👤 Gerhard Kordel
- 👤 Gerrit Scheiderer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 05:18
CPC Classifications
F; F42; F42B; F42B3/00; F42B3/10; F42B3/18
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
51 words
Electrical detonator or igniting medium, comprising a support member; electrical lead lines extending towards a detonator bridge and passing through said support member, said support member forming a shunt-capacitance which is connected to the lead lines for the detonator bridge, and said shunt-capacitance including ceramic layers which are equipped with electrodes.
Claim 2
Dependent Claim
51 words
Electrical detonator or igniting medium, comprising a support member; electrical lead lines extending towards a detonator bridge and passing through said support member, said support member forming a shunt-capacitance which is connected to the lead lines for the detonator bridge, and said shunt-capacitance including ceramic layers which are equipped with electrodes.
Claim 3
Dependent Claim
18 words
A detonator medium as claimed in claim 1, wherein said electrodes are alternatingly contacted with said lead lines.
Claim 4
Dependent Claim
17 words
A detonator medium as claimed in claim 1, wherein said shunt-capacitance is enclosed within a protective ring.
Claim 5
Dependent Claim
28 words
A detonator medium as claimed in claim 1, wherein the electrical activation of the detonator bridge is effectuated through one of said lead lines and an encapsulating casing.
Claim 6
Dependent Claim
27 words
A detonator medium as claimed in claim 1, wherein the actuation of the detonator bridge is effectuated through two said lead lines extending through the support member.
Claim 7
Dependent Claim
70 words
Electrical detonator or igniting medium, comprising a support member; electrical lead lines extending towards a detonator bridge and passing through said support member, said support member forming a shunt-capacitance which is connected to the lead lines for the detonator bridge, said detonator comprising an igniting element for a primer cap, with the formation of said shunt-capacitance in a laminated support member with central and peripheral structure of terminals for electrodes.
Claim 8
Dependent Claim
70 words
Electrical detonator or igniting medium, comprising a support member; electrical lead lines extending towards a detonator bridge and passing through said support member, said support member forming a shunt-capacitance which is connected to the lead lines for the detonator bridge, said detonator comprising an igniting element for a primer cap, with the formation of said shunt-capacitance in a laminated support member with central and peripheral structure of terminals for electrodes.
Claim 9
Dependent Claim
97 words
Electrical detonator or igniting medium, comprising a support member; electrical lead lines extending towards a detonator bridge and passing through said support member, said support member forming a shunt-capacitance which is connected to the lead lines for the detonator bridge, said support member being a detonator capsule with the structure of said shunt-capacitance being a pole member thereof, and which includes at least one through-aperture for said lead lines, said aperture being contacted therethrough and being electrically connected with each second layer of a plurality of layered electrodes and an associated lead line of said lead lines.
Claim 10
Dependent Claim
97 words
Electrical detonator or igniting medium, comprising a support member; electrical lead lines extending towards a detonator bridge and passing through said support member, said support member forming a shunt-capacitance which is connected to the lead lines for the detonator bridge, said support member being a detonator capsule with the structure of said shunt-capacitance being a pole member thereof, and which includes at least one through-aperture for said lead lines, said aperture being contacted therethrough and being electrically connected with each second layer of a plurality of layered electrodes and an associated lead line of said lead lines.
Claim 11
Dependent Claim
77 words
Electrical detonator or igniting medium, comprising a support member; electrical lead lines extending towards a detonator bridge and passing through said support member, said support member forming a shunt-capacitance which is connected to the lead lines for the detonator bridge; said medium being a triggering element in a mechanical switching and latching element, said shunt-capacitance being integrated in a retainer disc for a casing, and a primer capsule being displaceable within the casing relative to said disc.
Claim 12
Dependent Claim
77 words
Electrical detonator or igniting medium, comprising a support member; electrical lead lines extending towards a detonator bridge and passing through said support member, said support member forming a shunt-capacitance which is connected to the lead lines for the detonator bridge; said medium being a triggering element in a mechanical switching and latching element, said shunt-capacitance being integrated in a retainer disc for a casing, and a primer capsule being displaceable within the casing relative to said disc.
Claim 13
Dependent Claim
33 words
A detonator medium as claimed in claim 8, wherein the retainer disc is axially displaceable relative to a shunt-capacitance electrode through a lead line extending through an aperture under frictional and electrical contacting.
Claim 14
Dependent Claim
28 words
A detonator medium as claimed in claim 8, wherein the retainer disc is electrically-conductively rigidly connected with a shunt-capacitance electrode through a lead line passing through an aperture.
Claim 15
Dependent Claim
34 words
A detonator medium as claimed in claim 10, wherein the lead line extending through the retainer disc is connected along an arc to a primer capsule which is axially displaceable within an outer casing.
Claim 16
Dependent Claim
84 words
Electrical detonator or igniting medium, comprising a support member; electrical lead lines extending towards a detonator bridge and passing through said support member, said support member forming a shunt-capacitance which is connected to the lead lines for the detonator bridge; choke tubes being slid onto the lead lines in front of the entry of the lead lines into an aperture formed in the support member, said choke tubes being protected through a plastic embedding against environmental influences and being connected with said support member.
Claim 17
Dependent Claim
84 words
Electrical detonator or igniting medium, comprising a support member; electrical lead lines extending towards a detonator bridge and passing through said support member, said support member forming a shunt-capacitance which is connected to the lead lines for the detonator bridge; choke tubes being slid onto the lead lines in front of the entry of the lead lines into an aperture formed in the support member, said choke tubes being protected through a plastic embedding against environmental influences and being connected with said support member.
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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) | 1993-07-30 | 1994-01-29 | 1994-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-07-30 | 1998-01-29 | 1998-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-07-30 | 2002-01-29 | 2002-07-31 | $7700.00 | Window Closed / Lapsed |