US3768411A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety blasting apparatus and method
Assignee: EXPLOSIVES CORP AMERICA
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Filing: 1971-11-29
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Granted: 1973-10-30
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Expires: 1991-11-29
Abstract
Abstract A two component explosive mix package having two component containing chambers separated by a rupturable wall. A detonating cord is arranged in sufficient proximity to the rupturable wall so that detonation of the cord ruptures the wall to cause mixing of the two components to make an explosive mixture. Thereafter activation of other detonating means causes the mixture to explode.
Inventors
- 👤 A Abbott
- 👤 J Steffey
- 👤 M Maes
- 👤 J Friant
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:34
CPC Classifications
F; F42; F42B; F42B3/00; F42B3/26; Y; Y10; Y10S; Y10S102/00; Y10S102/705
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
177 words
A safety two component explosive assembly adapted for down hole mixing and subsequent detonation, said assembly comprising: a. blasting package means having first and second containing means contiguous to one another, including separating means for said containing means, b. first and second separately non-explosive mix components in, respectively, said first and second containing means, c. an explosive mixing means positioned in said package means in a manner to explosively open said separating means upon activation of said explosive mixing means to cause mixing of the said two components into an explosive mixture, and d. a detonating means operable separately from said explosive mixing means and spaced sufficiently from said explosive mixing means so that activation of said explosive mixing means does not cause premature activation of said detonating means, said detonating means being so disposed in said assembly as to cause detonation of said explosive mixture upon activation thereof, whereby initial activation of said explosive mixing means causes formation of said explosive mixture, and subsequent independent activation of said detonating means causes said explosive mixture to detonate.
Claim 2
Dependent Claim
177 words
A safety two component explosive assembly adapted for down hole mixing and subsequent detonation, said assembly comprising: a. blasting package means having first and second containing means contiguous to one another, including separating means for said containing means, b. first and second separately non-explosive mix components in, respectively, said first and second containing means, c. an explosive mixing means positioned in said package means in a manner to explosively open said separating means upon activation of said explosive mixing means to cause mixing of the said two components into an explosive mixture, and d. a detonating means operable separately from said explosive mixing means and spaced sufficiently from said explosive mixing means so that activation of said explosive mixing means does not cause premature activation of said detonating means, said detonating means being so disposed in said assembly as to cause detonation of said explosive mixture upon activation thereof, whereby initial activation of said explosive mixing means causes formation of said explosive mixture, and subsequent independent activation of said detonating means causes said explosive mixture to detonate.
Claim 3
Dependent Claim
61 words
The assembly as recited in claim 1, further comprising an elongate actuating member positioned in proximity with said package means, said explosive mixing means comprising a first detonating cord positioned along the length of said actuating member, and said detonating means comprising a second detonating cord positioned along said actuating member in spaced relationship with respect to said first detonating cord.
Claim 4
Dependent Claim
29 words
The assembly as recited in claim 2, wherein said package means has an annular configuration with an internal through opening, and said actuating means is positioned in said opening.
Claim 5
Dependent Claim
60 words
The assembly as recited in claim 3, wherein said package means has an annular configuration with an interior through opening, and said explosive mixing means comprises a detonating cord positioned in said through opening, and said detonating means comprIses a second detonating cord positioned in proximity to said package means at a location spaced outwardly from said first detonating cord.
Claim 6
Dependent Claim
29 words
The assembly as recited in claim 2, wherein said first and second containing means comprises first and second packages in stacked relationship along the length of said actuating member.
Claim 7
Dependent Claim
27 words
The assembly as recited in claim 5, wherein there is a plurality of stacked first and second packages with said first and second packages being stacked alternately.
Claim 8
Independent Claim
123 words
A method of in-hole mixing and detonation of an explosive composition, said method comprising: a. placing in a hole a blasting package means having first and second containing means contiguous to one another, containing, respectively, first and second independently non-explosive mix components, with separating means separating said components, b. also placing in proximity to said package means a first explosive mixing means and a second detonating means spaced from said explosive mixing means, c. activating said explosive mixing means to open said separating means and effect intermixing of said first and second components to form an explosive mixture, d. subsequent to the mixing of the two components to form an explosive mixture, activating the detonating means to cause detonation of said explosive mixture.
Claim 9
Independent Claim
123 words
A method of in-hole mixing and detonation of an explosive composition, said method comprising: a. placing in a hole a blasting package means having first and second containing means contiguous to one another, containing, respectively, first and second independently non-explosive mix components, with separating means separating said components, b. also placing in proximity to said package means a first explosive mixing means and a second detonating means spaced from said explosive mixing means, c. activating said explosive mixing means to open said separating means and effect intermixing of said first and second components to form an explosive mixture, d. subsequent to the mixing of the two components to form an explosive mixture, activating the detonating means to cause detonation of said explosive mixture.
Claim 10
Dependent Claim
61 words
The method as recited in claim 7, wherein one of said components comprises ammonium nitrate, and the other component comprises a liquid selected from a group consisting of hydrazine and a mixture of hydrazine and water, and said mixing of said two components is accomplished by explosively opening said containing means to cause said liquid component to wet said ammonium nitrate.
Claim 11
Independent Claim
114 words
A method of mixing a two-component explosive in a relatively narrow passageway and detonating the same, said method comprising: a. inserting in said passageway an elongate actuating member having mounted thereto an explosive mixing detonating cord, b. mounting to said actuating member explosive package means having first and second containing means containing, respectively ''''to a position where said first and second containing means are contiguous to one another'''', first and second independently non-explosive components, c. moving said package means along said member into said passageway, d. actuating said detonating cord to cause mixing of said first and second components to form an explosive mixture, and e. subsequent to said mixing, detonating said explosive mixture.
Claim 12
Independent Claim
114 words
A method of mixing a two-component explosive in a relatively narrow passageway and detonating the same, said method comprising: a. inserting in said passageway an elongate actuating member having mounted thereto an explosive mixing detonating cord, b. mounting to said actuating member explosive package means having first and second containing means containing, respectively ''''to a position where said first and second containing means are contiguous to one another'''', first and second independently non-explosive components, c. moving said package means along said member into said passageway, d. actuating said detonating cord to cause mixing of said first and second components to form an explosive mixture, and e. subsequent to said mixing, detonating said explosive mixture.
Claim 13
Dependent Claim
43 words
The method as recited in claim 9, wherein said actuating member is inserted into said hole with second detonating cord means mounted thereon in spaced relationship to said first named detonating cord, and detonating said explosive mixture by actuating said second detonating cord.
References Cited (Backward Citations)
US3610150A
Cited
US3580171A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-29 | 1977-04-30 | 1977-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-29 | 1981-04-30 | 1981-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-29 | 1985-04-30 | 1985-10-30 | $7700.00 | Window Closed / Lapsed |