GB1253049A - - Google Patents

Info

Publication number
GB1253049A
GB1253049A GB1253049DA GB1253049A GB 1253049 A GB1253049 A GB 1253049A GB 1253049D A GB1253049D A GB 1253049DA GB 1253049 A GB1253049 A GB 1253049A
Authority
GB
United Kingdom
Prior art keywords
alloy
casing
metal
sea water
primary charge
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE19671646347 external-priority patent/DE1646347A1/en
Application filed filed Critical
Publication of GB1253049A publication Critical patent/GB1253049A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B3/00—Blasting cartridges, i.e. case and explosive
    • F42B3/10—Initiators therefor
    • F42B3/11—Initiators therefor characterised by the material used, e.g. for initiator case or electric leads
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B3/00—Blasting cartridges, i.e. case and explosive
    • F42B3/10—Initiators therefor
    • F42B3/192—Initiators therefor designed for neutralisation on contact with water

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Air Bags (AREA)

Abstract

1,253,049. Detonators. DYNAMIT NOBEL A.G. 2 Dec., 1968 [1 Dec., 1967], No. 9445/71. Divided out of 1,253,048. Heading F3A. A detonator which is destroyed by the action of sea water after a predetermined time, comprises an outer casing 1 formed from an elemental metal or alloy capable of being decomposed by sea water within a predetermined time range, and at least one member 8 formed from an elemental metal or alloy having a standard electrode potential greater than that of the metal or alloy of the outer casing, the casing 1 and member 8 being electrically connected together whereby destruction of the casing is assisted by electrolytic degradation when the detonator is immersed in sea water. A container 3 for a primary charge 4 may also be formed of an elemental metal or alloy of greater standard electrode potential than the metal or alloy of the casing. The container 3 and member 8 can be formed of nickel or nickel-plated copper, and the casing 1 can be formed of magnesium or a secondary or ternary alloy thereof with one or two of silicon, bismuth, zinc and calcium. An electric primer 2 serves to ignite the primary charge 4. The primary charge 4 is lead azide and the secondary charge 5 is tetryl.
GB1253049D 1967-12-01 1968-12-02 Expired GB1253049A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19671646347 DE1646347A1 (en) 1967-12-01 1967-12-01 Self-destructing detonator
GB5716668A GB1253048A (en) 1967-12-01 1968-12-02

Publications (1)

Publication Number Publication Date
GB1253049A true GB1253049A (en) 1971-11-10

Family

ID=25754123

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1253049D Expired GB1253049A (en) 1967-12-01 1968-12-02

Country Status (1)

Country Link
GB (1) GB1253049A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2135760A (en) * 1983-02-25 1984-09-05 Du Pont Liquid-disabled blasting cap and ignition composition useful therein

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2135760A (en) * 1983-02-25 1984-09-05 Du Pont Liquid-disabled blasting cap and ignition composition useful therein
GB2176178A (en) * 1983-02-25 1986-12-17 Du Pont Liquid-disabled blasting cap and ignition composition useful therein

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Legal Events

Date Code Title Description
CSNS Application of which complete specification have been accepted and published, but patent is not sealed