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FR2075028A5 - Explosive detonator - Google Patents

Explosive detonator

Info

Publication number
FR2075028A5
FR2075028A5 FR7045237A FR7045237A FR2075028A5 FR 2075028 A5 FR2075028 A5 FR 2075028A5 FR 7045237 A FR7045237 A FR 7045237A FR 7045237 A FR7045237 A FR 7045237A FR 2075028 A5 FR2075028 A5 FR 2075028A5
Authority
FR
France
Prior art keywords
explosive
detonator
explosive detonator
charbe
ignites
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
FR7045237A
Other languages
French (fr)
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.)
Olin Corp
Original Assignee
Olin Corp
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 Olin Corp filed Critical Olin Corp
Application granted granted Critical
Publication of FR2075028A5 publication Critical patent/FR2075028A5/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
    • F42B5/00—Cartridge ammunition, e.g. separately-loaded propellant charges
    • F42B5/02—Cartridges, i.e. cases with charge and missile
    • F42B5/18—Caseless ammunition; Cartridges having combustible cases
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25C—HAND-HELD NAILING OR STAPLING TOOLS; MANUALLY OPERATED PORTABLE STAPLING TOOLS
    • B25C1/00—Hand-held nailing tools; Nail feeding devices
    • B25C1/08—Hand-held nailing tools; Nail feeding devices operated by combustion pressure
    • B25C1/10—Hand-held nailing tools; Nail feeding devices operated by combustion pressure generated by detonation of a cartridge
    • B25C1/16—Cartridges specially adapted for impact tools; Cartridge and bolts units
    • C—CHEMISTRY; METALLURGY
    • C06—EXPLOSIVES; MATCHES
    • C06C—DETONATING OR PRIMING DEVICES; FUSES; CHEMICAL LIGHTERS; PYROPHORIC COMPOSITIONS
    • C06C7/00—Non-electric detonators; Blasting caps; Primers
    • C06C7/02—Manufacture; Packing
    • 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
    • F42B3/12—Bridge initiators
    • F42B3/13—Bridge initiators with semiconductive bridge
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B5/00—Cartridge ammunition, e.g. separately-loaded propellant charges
    • F42B5/02—Cartridges, i.e. cases with charge and missile
    • F42B5/08—Cartridges, i.e. cases with charge and missile modified for electric ignition
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C19/00—Details of fuzes
    • F42C19/08—Primers; Detonators
    • F42C19/085—Primers for caseless ammunition
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C19/00—Details of fuzes
    • F42C19/08—Primers; Detonators
    • F42C19/12—Primers; Detonators electric
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C9/00—Time fuzes; Combined time and percussion or pressure-actuated fuzes; Fuzes for timed self-destruction of ammunition
    • F42C9/10—Time fuzes; Combined time and percussion or pressure-actuated fuzes; Fuzes for timed self-destruction of ammunition the timing being caused by combustion
    • F42C9/12—Time fuzes; Combined time and percussion or pressure-actuated fuzes; Fuzes for timed self-destruction of ammunition the timing being caused by combustion with ring combustion elements

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Organic Chemistry (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Air Bags (AREA)
  • Thermistors And Varistors (AREA)

Abstract

A charge of powdered explosive (e.g. fibrous nitro-cellulose) is coated with a thin layer (12.5-50 mu) of an electrically conductive material (graphite, lead peroxide) whose resistivity (pref. 2-100 ohms) decreases with an increase in temp so that when a current is passed through the coating it heats up rapidly and ignites the charbe. The detonator which is used for e.g. shells or explosive bolts, is economic and operates consistently.
FR7045237A 1970-01-21 1970-12-15 Explosive detonator Expired FR2075028A5 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US448070A 1970-01-21 1970-01-21

Publications (1)

Publication Number Publication Date
FR2075028A5 true FR2075028A5 (en) 1971-10-08

Family

ID=21711017

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7045237A Expired FR2075028A5 (en) 1970-01-21 1970-12-15 Explosive detonator

Country Status (4)

Country Link
AU (1) AU2051970A (en)
CA (1) CA958281A (en)
DE (1) DE2101418A1 (en)
FR (1) FR2075028A5 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2599136A1 (en) * 1986-05-22 1987-11-27 Detonix Close Corp DETONATOR FIRE ELEMENT
US4976199A (en) * 1988-09-01 1990-12-11 Expert Explosives (Proprietary) Limited Blasting system and its method of control
FR2720494A1 (en) * 1994-05-24 1995-12-01 Thomson Brandt Armements Detonator primer operating by electrical breakdown
FR2848896A1 (en) * 2002-12-19 2004-06-25 Hilti Ag Threading device for cartridge film in tool to seal fixation units, has pin electrode placed in insulator where one point is in relation with channel, and annual electrode to hold channel near support holding insulator

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE794600A (en) * 1972-01-28 1973-05-16 Usel Hubert CARTRIDGE WITHOUT CASE FOR ELECTRIC FIRE

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2599136A1 (en) * 1986-05-22 1987-11-27 Detonix Close Corp DETONATOR FIRE ELEMENT
US4976199A (en) * 1988-09-01 1990-12-11 Expert Explosives (Proprietary) Limited Blasting system and its method of control
FR2720494A1 (en) * 1994-05-24 1995-12-01 Thomson Brandt Armements Detonator primer operating by electrical breakdown
FR2848896A1 (en) * 2002-12-19 2004-06-25 Hilti Ag Threading device for cartridge film in tool to seal fixation units, has pin electrode placed in insulator where one point is in relation with channel, and annual electrode to hold channel near support holding insulator

Also Published As

Publication number Publication date
DE2101418A1 (en) 1971-11-04
AU2051970A (en) 1972-04-13
CA958281A (en) 1974-11-26

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Legal Events

Date Code Title Description
ST Notification of lapse