US4011115A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Explosive compositions with thermally conductive ingredient
Assignee: United States Department of the Army
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Filing: 1966-06-13
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Granted: 1977-03-08
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Expires: 1986-06-13
Abstract
Abstract An explosive composition consisting of an explosive which contains an eleically conductive ingredient, and having a thermally conductive, electrically insulating substance incorporated therein in order to reduce the sensitivity of the composition to radio frequency.
Inventors
- 👤 Roy Clifford Harris
- 👤 John William Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:34
CPC Classifications
F; F42; F42B; F42B3/00; F42B3/10; F42B3/18; C; C06; C06B; C06B23/00; C06B23/009; F42B3/12; F42B3/128
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
49 words
In an explosive composition having an electrical conductive ingredient incorporated therein selected from the group consisting of graphite, lead styphnate and manganese dioxide; the improvement comprising the incorporation therein of a thermally conductive, electrically insulating substance selected from the group consisting of boron nitride, silicon nitride and beryllium oxide.
Claim 2
Dependent Claim
49 words
In an explosive composition having an electrical conductive ingredient incorporated therein selected from the group consisting of graphite, lead styphnate and manganese dioxide; the improvement comprising the incorporation therein of a thermally conductive, electrically insulating substance selected from the group consisting of boron nitride, silicon nitride and beryllium oxide.
Claim 3
Dependent Claim
23 words
The composition of claim 1 wherein the amount of the thermally conductive, electrically insulating substance is between 5 and 20 percent by weight.
Claim 4
Dependent Claim
39 words
The composition of claim 1 wherein the electrical conductive ingredient consists of a mixture of graphite and lead styphnate, and the thermally conductive, electrically insulating substance is boron nitride in an amount of between 5 and 20% by weight.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-03-07 | 1980-09-06 | 1981-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-03-07 | 1984-09-06 | 1985-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-03-07 | 1988-09-06 | 1989-03-08 | $7700.00 | Window Closed / Lapsed |