Patent US4145969A successfully refreshed from Google Patents.
US4145969A
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Priming system for high-temperature stable propellants
Assignee: Dynamit Nobel AG
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Filing: 1977-10-12
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Granted: 1979-03-27
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Expires: 1997-10-12
Abstract
Abstract A priming system for propellants having thermal decomposition points above 180° C. comprising: A. an ignition charge; and B. a booster charge of solid explosive compound containing one or more --NO 2 groups and/or --N═N end groups and having a deflagration point above 200° C., said booster charge containing an initiating explosive in an amount between 10% and 60% by weight; The amount of the ignition charge A being between 2 and 20 weight % of the booster charge B.
Inventors
- 👤 Heinz Gawlick
- 👤 Gunther Marondel
- 👤 Werner Sieglein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:01
CPC Classifications
C; C06; C06C; C06C7/00; C06B; C06B25/00; C06B25/04; C06B25/34; C06B35/00
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
214 words
A priming system for a propellant having a thermal decomposition point above 180° C. comprising: A. an ignition charge selected from the group consisting of heavy metal azites, heavy metal salts of mono-, di- and trinitroresorcinol, lead phloroglucinate, heavy metal picrates, azotetrazole lead, diazodinitrophenol, and a mixture of 80% of a cerium-magnesium alloy and 20% of lead oxide; B. a booster charge of a mixture of B1. a solid explosive compound having one or more --NO 2 groups and/or --N═N groups and having a deflagration point above 200° C., said solid explosive compound being selected from the group consisting of hexanitrodiphenyl, hexanitrodiphenyl oxide, hexogen, octogen, tetryl, a triazole, a tetrazole, 5-aminotetrazole, guanylamino-5-tetrazole, 1-guanyl-3-tetrazolyl-5-guanidine, ditetrazole, diaminoguanidineditetrazole, diaminoguanidine azotetrazole, hexanitrodiphenyloxamide, hexanitrodiphenylsulfone, hexanitrodiphenylsulfide, hexanitrodiphenylamine, tetranitrocarbazole, tetranitroaniline, hexanitrostibene, hexanitroanilide, cyclotetramethylenetetranitramine and a hexanitrodiphenyl of the formula ##STR3## wherein A represents the group ##STR4## wherein n is a whole number between 1 and 3, or A represents the group --NH--CO--CO--HN-- or --NH--CO--HN--; and B2. between 10 and 60% by weight of an initiating explosive selected from the group consisting of heavy metal azides, heavy metal salts of mono-, di- and trinitroresorcinol, lead phlorogludinate, heavy metal picrates, azotetrazole lead and diazodinitrophenol, the amount of the ignition charge A being between 2 and 20% by weight of the booster charge B.
Claim 2
Dependent Claim
214 words
A priming system for a propellant having a thermal decomposition point above 180° C. comprising: A. an ignition charge selected from the group consisting of heavy metal azites, heavy metal salts of mono-, di- and trinitroresorcinol, lead phloroglucinate, heavy metal picrates, azotetrazole lead, diazodinitrophenol, and a mixture of 80% of a cerium-magnesium alloy and 20% of lead oxide; B. a booster charge of a mixture of B1. a solid explosive compound having one or more --NO 2 groups and/or --N═N groups and having a deflagration point above 200° C., said solid explosive compound being selected from the group consisting of hexanitrodiphenyl, hexanitrodiphenyl oxide, hexogen, octogen, tetryl, a triazole, a tetrazole, 5-aminotetrazole, guanylamino-5-tetrazole, 1-guanyl-3-tetrazolyl-5-guanidine, ditetrazole, diaminoguanidineditetrazole, diaminoguanidine azotetrazole, hexanitrodiphenyloxamide, hexanitrodiphenylsulfone, hexanitrodiphenylsulfide, hexanitrodiphenylamine, tetranitrocarbazole, tetranitroaniline, hexanitrostibene, hexanitroanilide, cyclotetramethylenetetranitramine and a hexanitrodiphenyl of the formula ##STR3## wherein A represents the group ##STR4## wherein n is a whole number between 1 and 3, or A represents the group --NH--CO--CO--HN-- or --NH--CO--HN--; and B2. between 10 and 60% by weight of an initiating explosive selected from the group consisting of heavy metal azides, heavy metal salts of mono-, di- and trinitroresorcinol, lead phlorogludinate, heavy metal picrates, azotetrazole lead and diazodinitrophenol, the amount of the ignition charge A being between 2 and 20% by weight of the booster charge B.
Claim 3
Dependent Claim
16 words
A priming system according to claim 1 wherein the explosive composition contains a --NO 2 group.
Claim 4
Dependent Claim
16 words
A priming system according to claim 1 wherein an explosive compound contains a --N═N end group.
Claim 5
Dependent Claim
17 words
A priming system according to claim 1 wherein the explosive is a hexanitrodiphenyl or a derivative thereof.
Claim 6
Dependent Claim
15 words
A priming system according to claim 1 wherein the solid explosive compound is hexanitrodiphenyl oxide.
Claim 7
Dependent Claim
17 words
A priming system according to claim 1 wherein the solid explosive compound is tetrazole or its derivative.
Claim 8
Dependent Claim
40 words
A priming system according to claim 1 wherein there are two charges which are pressed together to form cylinders whose diameter amounts to not more than 5 mm and whose length amounts to at most 3× to 4× the diameter.
Claim 9
Dependent Claim
44 words
A priming system according to claim 1 wherein the solid explosive compound is a hexanitrodiphenyl of the general formula ##STR5## wherein A represents the group ##STR6## wherein n is a whole number between 1 and 3, or A represents the group --NH--CO--CO--HN-- or --NH--CO--HN--.
Claim 10
Dependent Claim
29 words
A priming system according to claim 1 wherein the solid explosive compound is selected from the group consisting of triazoles, tetrazole, 5-aminotetrazole, guanylamino-5-tetrazole, 1-guanyl-3-tetrazolyl-5-guanidine, ditetrazole, diaminoguanidineditetrazole and diaminoguanadine azotetrazole.
Claim 11
Dependent Claim
38 words
A priming system according to claim 1 wherein the initiating explosive is selected from the group consisting of heavy metal azides, heavy metal salts of mono-, di- and trinitroresorcinol, lead phloroglucinate, heavy metal picrates, azotetrazole lead and diazodinitrophenol.
Claim 12
Dependent Claim
20 words
A priming system according to claim 1 wherein the ignition charge is positioned successively with respect to the booster charge.
Claim 13
Dependent Claim
16 words
A priming system according to claim 1 wherein the ignition charge is a pyrotechnical ignition mixture.
Claim 14
Dependent Claim
25 words
A priming system according to claim 1 wherein the ignition charge is a mixture of 80% of a cerium-magnesium alloy and 20% of lead oxide.
Claim 15
Dependent Claim
38 words
A priming system according to claim 1 wherein the ignition charge is selected from the group consisting of heavy metal azides, heavy metal salts of mono-, di- and trinitroresorcinol, lead phloroglucinate, heavy metal picrates, azotetrazole lead and diazodinitrophenol.
Claim 16
Dependent Claim
17 words
A priming system according to claim 1 wherein said solid explosive compound is hexogen, octogen or tetryl.
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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) | 1982-03-26 | 1982-09-25 | 1983-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-03-26 | 1986-09-25 | 1987-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-03-26 | 1990-09-25 | 1991-03-27 | $7700.00 | Window Closed / Lapsed |