US4295424A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Explosive container for cast primer
Assignee: Atlas Powder Co
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Filing: 1979-04-24
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Granted: 1981-10-20
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Expires: 1999-04-24
Abstract
Abstract A container for containing a thermosetting explosive charge and delay detonator element is provided. The lower portion of the container has an open bottom and contains the cast explosive charge. A projection and recess are located in that portion of the container which contains the cast explosive charge for retaining the explosive charge within the container and for preventing movement of the charge relative to the container once the charge has solidified. A tubular conduit is longitudinally disposed on the exterior of the container and dimensioned to receive a detonating cord. The container includes an integral alignment structure and housing for the insertion of a delay detonator unit having an initiating element and a delay detonator element adapted so that the initiating element can be positioned adjacent the tubular conduit with the delay detonator element positioned adjacent the cast explosive charge.
Inventors
- 👤 Don H. Smith
- 👤 Arthur F. Bowman
- 👤 Norman M. Junk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 06:55
CPC Classifications
F; F42; F42B; F42B3/00; F42B3/26
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
174 words
An explosive container for use with a detonator delay unit of the type having an initiating means and a delay detonator means and for containing a cast explosive charge comprising: a hollow body having closed sides and two open ends with a tubular conduit disposed longitudinally on the exterior of said body, said tubular conduit being dimensioned to receive a detonating cord; partition means contained within and attached to said hollow body, said partition means extending over a cross-section of said hollow body and dividing the interior of said hollow body into an open-ended first volume and an open-ended second volume, said first volume for containing the cast explosive charge, said partition means having an aperture therein to allow the detonator delay unit to be positioned wherein the delay detonator means is positionable adjacent the explosive charge and the initiating means is located in said second volume; means located in said second volume for aligning the initiating means adjacent said tubular conduit; means for retaining the cast explosive charge within said open-ended first volume.
Claim 2
Dependent Claim
174 words
An explosive container for use with a detonator delay unit of the type having an initiating means and a delay detonator means and for containing a cast explosive charge comprising: a hollow body having closed sides and two open ends with a tubular conduit disposed longitudinally on the exterior of said body, said tubular conduit being dimensioned to receive a detonating cord; partition means contained within and attached to said hollow body, said partition means extending over a cross-section of said hollow body and dividing the interior of said hollow body into an open-ended first volume and an open-ended second volume, said first volume for containing the cast explosive charge, said partition means having an aperture therein to allow the detonator delay unit to be positioned wherein the delay detonator means is positionable adjacent the explosive charge and the initiating means is located in said second volume; means located in said second volume for aligning the initiating means adjacent said tubular conduit; means for retaining the cast explosive charge within said open-ended first volume.
Claim 3
Dependent Claim
29 words
The container as recited in claim 1 wherein said means for retaining the cast explosive charge includes a projection which extends from said partition means into said first volume.
Claim 4
Dependent Claim
21 words
The container as recited in claims 1 or 2 wherein said aperture in said partition means is opposite said tubular conduit.
Claim 5
Dependent Claim
180 words
An explosive container for use with a detonator delay unit of the type having an initiating means and a delay detonator means and for containing a cast explosive charge comprising: a hollow body of generally circular cross-section open at both ends, having a tubular conduit disposed longitudinally on the exterior of said body, said tubular conduit being dimensioned to receive a detonating cord; partition means contained within and attached to said hollow body, said partition means extending over a cross-section of said hollow body and dividing the interior of said hollow body into an open-ended first volume and an open-ended second volume, said first volume for containing the cast explosive charge, said partition means having an aperture therein to allow said detonator delay unit to be positioned wherein the delay detonator means is positionable in the first volume adjacent the explosive charge and the initiating means is located in said second volume; alignment means located in said first volume for aligning the initiating means adjacent said tubular conduit; means for retaining the cast explosive charge within said open-ended first volume.
Claim 6
Dependent Claim
180 words
An explosive container for use with a detonator delay unit of the type having an initiating means and a delay detonator means and for containing a cast explosive charge comprising: a hollow body of generally circular cross-section open at both ends, having a tubular conduit disposed longitudinally on the exterior of said body, said tubular conduit being dimensioned to receive a detonating cord; partition means contained within and attached to said hollow body, said partition means extending over a cross-section of said hollow body and dividing the interior of said hollow body into an open-ended first volume and an open-ended second volume, said first volume for containing the cast explosive charge, said partition means having an aperture therein to allow said detonator delay unit to be positioned wherein the delay detonator means is positionable in the first volume adjacent the explosive charge and the initiating means is located in said second volume; alignment means located in said first volume for aligning the initiating means adjacent said tubular conduit; means for retaining the cast explosive charge within said open-ended first volume.
Claim 7
Dependent Claim
50 words
The container as recited in claim 4 wherein said alignment means forms an integral part of the container and includes a passageway dimensioned to receive said initiating means which passageway communicates with said tubular conduit so that said initiating means is adjacent said tubular conduit when inserted into said passageway.
Claim 8
Dependent Claim
28 words
The container as recited in claim 4 wherein said means for retaining the cast explosive includes a projection which extends from said partition means into said first volume.
Claim 9
Dependent Claim
28 words
The container as recited in claim 6 wherein said projection is in the shape of an inverted truncated cone and said projection contains at least one circumferential serration.
Claim 10
Dependent Claim
32 words
The container as recited in claim 4 wherein said means for retaining the cast explosive charge includes means for preventing rotational movement of said cast explosive charge relative to said hollow body.
Claim 11
Dependent Claim
20 words
The container as recited in claim 8 wherein said means for preventing rotation includes a recess in said partition means.
Claim 12
Dependent Claim
24 words
The container as recited in claim 7 wherein the curved sides of said truncated cone form an angle of about 15° from the vertical.
Claim 13
Dependent Claim
23 words
The container as recited in claims 4, 5, 6 or 7 wherein said apperture in said partition means is opposite said tubular conduit.
Claim 14
Dependent Claim
30 words
The container as recited in claim 4 wherein said tubular conduit has a thickened wall which separates the cast explosive charge from the detonating cord contained within said tubular conduit.
Claim 15
Dependent Claim
19 words
The container as recited in claim 4 further comprising a thermosetting explosive charge contained within said open-ended first volume.
Claim 16
Dependent Claim
25 words
The container as recited in claim 13 wherein said thermosetting explosive is selected from the group consisting of RDX, TNT, PETN, HMX and mixtures thereof.
Claim 17
Dependent Claim
42 words
The container as recited in claims 4, 5, 6, or 7 wherein said aperture includes a lip located on the second volume side of said aperture for restraining said detonator delay means from being removed from said first volume after insertion therein.
Claim 18
Dependent Claim
31 words
The container as recited in claims 4, 5, 6 or 7 wherein said passageway is dimensioned to restrict said initiating means from contacting a detonating cord contained within said tubular conduit.
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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) | 1984-10-19 | 1985-04-20 | 1985-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-10-19 | 1989-04-20 | 1989-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-10-19 | 1993-04-20 | 1993-10-20 | $7700.00 | Window Closed / Lapsed |