US3774541A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Selection control methods for explosive systems
Assignee: —
•
Filing: 1971-05-03
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Granted: 1973-11-27
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Expires: 1991-05-03
Abstract
Abstract Selective control methods are provided for explosive systems which involve the placement of agents which act by dilution, physical or chemical means to alter the sensitivity of explosive (including pyrotechnic) materials or devices wherein: (1) the release may occur by the melting of the agent, rupture of a container or by pumping; (2) the agent is confined as a solid, is within a container capsule, is physically placed or mixed within the explosive as small or large pieces, is coated or molded on the walls or other parts of the device, or is held in an inactive position outside the action zone but is so arranged that it will be effectively placed on receipt of signal; (3) the signal to deactivate or activate may be heat supplied by the environment, or from an activating unit incorporated in the system, or pressure, or mechanical activation, wherein the signal may be the result of a command or set, or the output of a transducer control system.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:35
CPC Classifications
C; C06; C06C; C06C5/00; C06C5/06; F; F42; F42B; F42B39/00; F42B39/14; F42D; F42D5/00; F42D5/04
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
188 words
A component section for a pyrotechnic and explosive train designed to be unable to transfer ignition and explosion until activated comprising: a tubular body serving as a housing means and having a first end capable of receiving and propagating an ignition signal and a second end capable of performing a useful explosive work function, said housing means containing segments of compacted particulate pyrotechnic and explosive material, at least two segments of which are separated by a barrier of meltable solid material and annular sections of absorbent material capable of absorbing said meltable solid when said meltable solid is heated to be changed to a flowable liquid phase, said absorbent material located in proximity to said barrier, wherein said pyrotechnic and explosive train will be unable to propagate an ignition from said first end to said second end until an explosure of said component section to sufficient heat to allow said barrier material to melt and flow into said absorbent material, said flow will occur and the component section will transfer an ignition signal from said first end to said second end and perform a useful explosive work function.
Claim 2
Dependent Claim
188 words
A component section for a pyrotechnic and explosive train designed to be unable to transfer ignition and explosion until activated comprising: a tubular body serving as a housing means and having a first end capable of receiving and propagating an ignition signal and a second end capable of performing a useful explosive work function, said housing means containing segments of compacted particulate pyrotechnic and explosive material, at least two segments of which are separated by a barrier of meltable solid material and annular sections of absorbent material capable of absorbing said meltable solid when said meltable solid is heated to be changed to a flowable liquid phase, said absorbent material located in proximity to said barrier, wherein said pyrotechnic and explosive train will be unable to propagate an ignition from said first end to said second end until an explosure of said component section to sufficient heat to allow said barrier material to melt and flow into said absorbent material, said flow will occur and the component section will transfer an ignition signal from said first end to said second end and perform a useful explosive work function.
Claim 3
Dependent Claim
141 words
Method of producing pyrotechnic structures in inactive form for later activation comprising: preparing of a mixture of active particulate solid pyrotechnic material with a solid deactivating agent, said deactivating agent being a poor solvent for said pyroTechnic material, depositing said mixture on a supporting sheet means in the structure desired for a pyrotechnic function, said deactivated mixture being solid after deposition has completed, and wherein said pyrotechnic structure is inactive to initiation signals due to the presence of said deactivating agent, transporting said deactivated structure to the point of desired use, combining said deactivated structure with a layer of material absorbent to said deactivating agent, causing said pyrotechnic structure to become active to initiation signals by heating said structure when in contact with said absorbent material to melt said deactivating agent and cause said agent to flow into said absorbent material.
Claim 4
Dependent Claim
141 words
Method of producing pyrotechnic structures in inactive form for later activation comprising: preparing of a mixture of active particulate solid pyrotechnic material with a solid deactivating agent, said deactivating agent being a poor solvent for said pyroTechnic material, depositing said mixture on a supporting sheet means in the structure desired for a pyrotechnic function, said deactivated mixture being solid after deposition has completed, and wherein said pyrotechnic structure is inactive to initiation signals due to the presence of said deactivating agent, transporting said deactivated structure to the point of desired use, combining said deactivated structure with a layer of material absorbent to said deactivating agent, causing said pyrotechnic structure to become active to initiation signals by heating said structure when in contact with said absorbent material to melt said deactivating agent and cause said agent to flow into said absorbent material.
Claim 5
Dependent Claim
30 words
The method of producing pyrotechnic structures of claim 2 wherein the mixture of solid pyrotechnic material and solid deactivating agent is dispersed in and is applied from a liquid medium.
Claim 6
Dependent Claim
159 words
The method of producing pyrotechnic structures of claim 2 wherein the solid deactivating agent is removed by extraction with a solvent. 5 A component section for a pyrotechnic train designed to carry ignition signals comprising: a tubular body serving as a housing means and having a first end capable of receiving an ignition signal and a second end capable of performing a useful ignition work function, said housing means containing segments of compacted particulate pyrotechnic compositions; means for deactivating said pyrotechnic train upon receipt of a predetermined heat signal, said deactivation means comprising an insert of solid deactivating agent between said pyrotechnic segments, wherein said component section will allow propagation of an ignition signal from said first end to said second end, and wherein upon receipt of said predetermined heat signal, said deactivating agent will flow into said pyrotechnic material and render said component section unable to propagate said ignition signal from said first end to said second end.
Claim 7
Dependent Claim
15 words
The component section of claim 5 wherein wax is used as the solid deactivating agent.
Claim 8
Dependent Claim
22 words
The component section of claim 5 wherein the solid deactivating agent is contained in an annular opening external to said pyrotechnic segments.
Claim 9
Dependent Claim
22 words
The component section of claim 5 wherein a longitudinal segment of compacted particulate pyrotechnic material is replaced with said solid deactivating agent.
Claim 10
Dependent Claim
25 words
The component section of claim 5 wherein one segment contains particulate pyrotechnic composition to which a solid deactivating agent has been added in particulate form.
Claim 11
Dependent Claim
167 words
A component section for a pyrotechnic and explosive train designed to transfer ignition and explosive signals comprising: a tubular body serving as a housing means and having a first end capable of receiving and propagating an ignition signal and a second end capable of performing a useful explosive work function, said housing means containing a segment of compacted particulate pyrotechnic composition and a segment of compacted particulate explosive material capable of detonating from the ignition signal of said segment of pyrotechnic composition, means for deactivating said pyrotechnic and explosive train upon receipt of a predetermined heat signal, said deactivating means comprising an insert of solid deactivating agent between said pyrotechnic and explosive segments, wherein said component section will allow propagation of ignition and explosive signals from said first end to said second end, and wherein upon receipt of said predetermined heat signal, said deactivating agent will flow into said explosive material and render it incapable of detonating from the ignition signal of said segment of pyrotechnic composition.
Claim 12
Dependent Claim
167 words
A component section for a pyrotechnic and explosive train designed to transfer ignition and explosive signals comprising: a tubular body serving as a housing means and having a first end capable of receiving and propagating an ignition signal and a second end capable of performing a useful explosive work function, said housing means containing a segment of compacted particulate pyrotechnic composition and a segment of compacted particulate explosive material capable of detonating from the ignition signal of said segment of pyrotechnic composition, means for deactivating said pyrotechnic and explosive train upon receipt of a predetermined heat signal, said deactivating means comprising an insert of solid deactivating agent between said pyrotechnic and explosive segments, wherein said component section will allow propagation of ignition and explosive signals from said first end to said second end, and wherein upon receipt of said predetermined heat signal, said deactivating agent will flow into said explosive material and render it incapable of detonating from the ignition signal of said segment of pyrotechnic composition.
Claim 13
Dependent Claim
141 words
A component section for an explosive train designed to carry explosive signals comprising: a tubular body serving as a housing means and having a first end capable of receiving an explosive signal and a second end capable of performing a useful explosive work function, said housing means containing a segment of compacted particulate exploSive composition, means for deactivating said explosive train upon receipt of a predetermined heat signal, said deactivation means comprising a solid deactivating agent in non-interferring location in proximity to said explosive segment, wherein said component section will allow propagation of an explosive signal from said first end to said second end, and wherein upon receipt of said predetermined heat signal, said deactiviating agent will flow into said explosive material and render said component section unable to propagate said explosive signal from said first end to said second end.
Claim 14
Dependent Claim
141 words
A component section for an explosive train designed to carry explosive signals comprising: a tubular body serving as a housing means and having a first end capable of receiving an explosive signal and a second end capable of performing a useful explosive work function, said housing means containing a segment of compacted particulate exploSive composition, means for deactivating said explosive train upon receipt of a predetermined heat signal, said deactivation means comprising a solid deactivating agent in non-interferring location in proximity to said explosive segment, wherein said component section will allow propagation of an explosive signal from said first end to said second end, and wherein upon receipt of said predetermined heat signal, said deactiviating agent will flow into said explosive material and render said component section unable to propagate said explosive signal from said first end to said second end.
Claim 15
Dependent Claim
147 words
A component section for an explosive train designed to carry explosive signals comprising: a tubular body serving as a housing means and having a first end capable of receiving an explosive signal and a second end capable of performing a useful explosive work function, said housing means containing a segment of compacted particulate explosive composition; means for deactivating said explosive train upon receipt of a predetermined heat signal, said deactivating means comprising a liquid deactivating agent contained in a sealed plastic container in non-interferring location in proximity to said explosive segment, wherein said component section will allow propagation of an explosive signal from said first end to said second end, and wherein upon receipt of said predetermined heat signal, said deactivating agent will flow into said explosive material and render said component section unable to propagate said explosive signal from said first end to said second end.
Claim 16
Dependent Claim
147 words
A component section for an explosive train designed to carry explosive signals comprising: a tubular body serving as a housing means and having a first end capable of receiving an explosive signal and a second end capable of performing a useful explosive work function, said housing means containing a segment of compacted particulate explosive composition; means for deactivating said explosive train upon receipt of a predetermined heat signal, said deactivating means comprising a liquid deactivating agent contained in a sealed plastic container in non-interferring location in proximity to said explosive segment, wherein said component section will allow propagation of an explosive signal from said first end to said second end, and wherein upon receipt of said predetermined heat signal, said deactivating agent will flow into said explosive material and render said component section unable to propagate said explosive signal from said first end to said second end.
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) | 1976-11-26 | 1977-05-28 | 1977-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-26 | 1981-05-28 | 1981-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-26 | 1985-05-28 | 1985-11-27 | $7700.00 | Window Closed / Lapsed |