US4428292A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High temperature exploding bridge wire detonator and explosive composition
Assignee: Halliburton Co
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Filing: 1982-11-05
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Granted: 1984-01-31
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Expires: 2002-11-05
Abstract
Abstract A chemically and thermally stable explosive composition comprising hexanitrostilbene, a perhalogenate oxidizing agent, a sensitizing metal and a source of copper ions. The explosive composition is thermally stable up to a temperature of about 550° F. and can be initiated by an exploding bridge wire or an electrostatic discharge of sufficient energy.
Inventors
- 👤 Robert A. Riggs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:59
CPC Classifications
C; C06; C06B; C06B29/00; C06B29/02; C06B29/16; C06B29/18; C06B23/00; C06B23/002; C06B23/004; C06C; C06C5/00; C06C5/04
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
74 words
An explosive composition capable of initiation by an exploding bridge wire comprising: from about 25 percent to about 50 percent by weight of hexanitrostilbene; from about 40 percent to about 70 percent by weight of a perhalogenate oxidizing agent; from about 1.5 percent to about 6 percent by weight of a sensitizing metal, and from about 0.0006 percent to about 20 percent by weight of copper ions provided by a suitable copper compound source.
Claim 2
Dependent Claim
74 words
An explosive composition capable of initiation by an exploding bridge wire comprising: from about 25 percent to about 50 percent by weight of hexanitrostilbene; from about 40 percent to about 70 percent by weight of a perhalogenate oxidizing agent; from about 1.5 percent to about 6 percent by weight of a sensitizing metal, and from about 0.0006 percent to about 20 percent by weight of copper ions provided by a suitable copper compound source.
Claim 3
Dependent Claim
34 words
The composition of claim 1 wherein said perhalogenate oxidizing agent comprises at least one member selected from the group consisting of potassium perchlorate, sodium perchlorate, sodium paraperiodate, barium periodate, potassium periodate and ammonium perchlorate.
Claim 4
Dependent Claim
30 words
The composition of claim 1 wherein said perhalogenate oxidizing agent is present in an amount of from about 45 percent to about 65 percent by weight of said explosive composition.
Claim 5
Dependent Claim
13 words
The composition of claim 3 wherein said perhalogenate oxidizing agent comprises potassium perchlorate.
Claim 6
Dependent Claim
26 words
The composition of claim 1 wherein said sensitizing metal comprises at least one member selected from the group consisting of aluminum, zirconium, titanium, vanadium and magnesium.
Claim 7
Dependent Claim
24 words
The composition of claim 1 wherein said sensitizing metal comprises from about 2 percent to about 5.5 percent by weight of said explosive composition.
Claim 8
Dependent Claim
13 words
The composition of claim 6 wherein said sensitizing metal comprises cleaned flaked aluminum.
Claim 9
Dependent Claim
30 words
The composition of claim 1 wherein the source for said copper ions is at least one member selected from the group consisting of copper sulfate, copper nitrate, and copper phosphate.
Claim 10
Dependent Claim
31 words
The composition of claim 1 wherein said source of copper ions is present in an amount of from about 0.001 percent to about 12 percent by weight of said explosive composition.
Claim 11
Dependent Claim
15 words
The composition of claim 9 wherein the source of said copper ions is copper sulfate.
Claim 12
Dependent Claim
106 words
An electrical detonator comprising: an electrically insulated container; an explodable bridge wire positioned within said container and connected to a pair of electrically conductive wires which penetrate said container to provide a means of introducing an electrical charge into said bridge wire, and an explosive composition contained within said container comprising from about 25 percent to about 50 percent by weight of hexanitrostilbene, from about 40 percent to about 70 percent by weight of a perhalogenate oxidizing agent from about 1.5 percent to about 6 percent by weight of a sensitizing metal, and from about 0.0006 percent to about 20 percent by weight of copper ions.
Claim 13
Dependent Claim
106 words
An electrical detonator comprising: an electrically insulated container; an explodable bridge wire positioned within said container and connected to a pair of electrically conductive wires which penetrate said container to provide a means of introducing an electrical charge into said bridge wire, and an explosive composition contained within said container comprising from about 25 percent to about 50 percent by weight of hexanitrostilbene, from about 40 percent to about 70 percent by weight of a perhalogenate oxidizing agent from about 1.5 percent to about 6 percent by weight of a sensitizing metal, and from about 0.0006 percent to about 20 percent by weight of copper ions.
Claim 14
Dependent Claim
38 words
The detonator of claim 11 wherein said perhalogenate oxidizing agent of said explosive composition comprises at least one member selected from the group consisting of potassium perchlorate, potassium periodate, sodium perchlorate, sodium paraperiodate, barium periodate and magnesium perchlorate.
Claim 15
Dependent Claim
34 words
The detonator of claim 11 wherein said perhalogenate oxidizing agent of said explosive composition is present in an amount of from about 45 percent to about 65 percent by weight of said explosive composition.
Claim 16
Dependent Claim
17 words
The detonator of claim 13 wherein said perhalogenate oxidizing agent of said explosive composition is potassium perchlorate.
Claim 17
Dependent Claim
15 words
The detonator of claim 11 wherein said sensitizing metal of said explosive composition comprises aluminum.
Claim 18
Dependent Claim
24 words
The detonator of claim 11 wherein said sensitizing metal comprises from about 2 percent to about 5.5 percent by weight of said explosive composition.
Claim 19
Dependent Claim
13 words
The detonator of claim 16 wherein said sensitizing metal comprises cleaned flaked aluminum.
Claim 20
Dependent Claim
30 words
The detonator of claim 11 wherein the source for said copper ions is at least one member selected from the group consisting of copper sulfate, copper nitrate, and copper phosphate.
Claim 21
Dependent Claim
29 words
The detonator of claim 11 wherein said copper ions are present in an amount of from about 0.001 percent to about 1 percent by weight of said explosive composition.
Claim 22
Dependent Claim
15 words
The detonator of claim 19 wherein the source of said copper ions is copper sulfate.
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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) | 1987-01-30 | 1987-08-01 | 1988-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-01-30 | 1991-08-01 | 1992-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-01-30 | 1995-08-01 | 1996-01-31 | $7700.00 | Window Closed / Lapsed |