GB1206245A - Improvements in or relating to explosive devices provided with electric fuses - Google Patents

Improvements in or relating to explosive devices provided with electric fuses

Info

Publication number
GB1206245A
GB1206245A GB3775268A GB3775268A GB1206245A GB 1206245 A GB1206245 A GB 1206245A GB 3775268 A GB3775268 A GB 3775268A GB 3775268 A GB3775268 A GB 3775268A GB 1206245 A GB1206245 A GB 1206245A
Authority
GB
United Kingdom
Prior art keywords
casing
wires
relating
fuse
devices provided
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
GB3775268A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dynamit Nobel AG
Original Assignee
Dynamit Nobel AG
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
Application filed by Dynamit Nobel AG filed Critical Dynamit Nobel AG
Publication of GB1206245A publication Critical patent/GB1206245A/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
    • F42B3/103—Mounting initiator heads in initiators; Sealing-plugs
    • 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
    • F42B3/18—Safety initiators resistant to premature firing by static electricity or stray currents
    • F42B3/185—Safety initiators resistant to premature firing by static electricity or stray currents having semi-conductive means, e.g. sealing plugs

Landscapes

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

Abstract

1,206,245. Electric detonators. DYNAMIT NOBEL A.G. 7 Aug., 1968 [29 Nov., 1967], No. 37752/68. Heading F3A. An explosive device, e.g. a detonator, which is resistant to electrostatic discharges comprises, a metal casing 1 containing an explosive charge 2; an electrically insulating closure plug 4 and fuse wires 5 for igniting the composition; and a coating 9 of limited electrical conductivity formed from a lacquer and electrically conductive particles, the casing and at least one of the fuse wires being electrically connected via this layer which has an electrical resistance of 0À5 k# to 500 k# between the casing and fuse wire(s). The resistance between the wires 5 is also from 0À5 k# to 500 k#. The layer 9 contains graphite or aluminium, silver or copper powder.
GB3775268A 1967-11-29 1968-08-07 Improvements in or relating to explosive devices provided with electric fuses Expired GB1206245A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DED0054710 1967-11-29

Publications (1)

Publication Number Publication Date
GB1206245A true GB1206245A (en) 1970-09-23

Family

ID=7055978

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3775268A Expired GB1206245A (en) 1967-11-29 1968-08-07 Improvements in or relating to explosive devices provided with electric fuses

Country Status (5)

Country Link
BE (1) BE724266A (en)
DE (1) DE1646344A1 (en)
ES (1) ES356570A1 (en)
FR (1) FR1593166A (en)
GB (1) GB1206245A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2397365A (en) * 1978-09-01 2004-07-21 Emi Ltd R.F.-protected explosive device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006043063B4 (en) * 2006-09-14 2015-08-27 Friedrich-Wilhelm Sobbe Ignition means with initial set secured against accidental ignition by electrostatic charging

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2397365A (en) * 1978-09-01 2004-07-21 Emi Ltd R.F.-protected explosive device
GB2397365B (en) * 1978-09-01 2004-11-10 Emi Ltd RF protection device

Also Published As

Publication number Publication date
BE724266A (en) 1969-05-21
FR1593166A (en) 1970-05-25
DE1646344A1 (en) 1971-07-08
ES356570A1 (en) 1970-02-16

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees