发明名称 |
Field-primable chub cartridge having a longitudinal threading tunnel integral therewith |
摘要 |
A chub cartridge has a tubular chamber containing a water-bearing blasting agent, and a longitudinal tunnel adjacent to the tubular chamber and integral therewith. Preferably, the tunnel is full-length and continuous and has holes for threading a detonating cord therethrough and for holding a cord firmly against the tubular chamber for the cord-priming of the cartridges. In primer assemblies, the tunnel also can be used to hold a cap/booster in place, and for lacing cap wires or a low-energy detonating cord. A preferred cartridge is made continuously in a series by wrapping a web of film having a row of holes along one edge so as to form a tube and an outer flap containing the holes, and sealing the tube and the flap so as to form a tunnel containing the holes in its outer portion, the wrapping being performed so that either the inner or outer portion of the tunnel is circumferentially longer than the other.
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申请公布号 |
US4282812(A) |
申请公布日期 |
1981.08.11 |
申请号 |
US19790027882 |
申请日期 |
1979.04.06 |
申请人 |
E. I. DU PONT DE NEMOURS & COMPANY |
发明人 |
FORGEY, JAMES H.;STEPHENS, DONALD R.;TAN, ENGNAM A. |
分类号 |
F42B3/00;F42B3/087;F42B3/26;F42D1/08;F42D1/20 |
主分类号 |
F42B3/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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