WO2003100346A1 - Detonateur comprenant un element d'allumage traversant hermetique de type transistor - Google Patents

Detonateur comprenant un element d'allumage traversant hermetique de type transistor Download PDF

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Publication number
WO2003100346A1
WO2003100346A1 PCT/IB2003/002001 IB0302001W WO03100346A1 WO 2003100346 A1 WO2003100346 A1 WO 2003100346A1 IB 0302001 W IB0302001 W IB 0302001W WO 03100346 A1 WO03100346 A1 WO 03100346A1
Authority
WO
WIPO (PCT)
Prior art keywords
ignition
detonator
ignition element
charge
header
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.)
Ceased
Application number
PCT/IB2003/002001
Other languages
English (en)
Inventor
David M. Forman
John H. Oldham
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.)
Special Devices Inc
Original Assignee
Special Devices Inc
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 Special Devices Inc filed Critical Special Devices Inc
Priority to AU2003232961A priority Critical patent/AU2003232961A1/en
Publication of WO2003100346A1 publication Critical patent/WO2003100346A1/fr
Anticipated expiration legal-status Critical
Ceased 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
    • F42B3/12—Bridge initiators
    • F42B3/121—Initiators with incorporated integrated circuit
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42D—BLASTING
    • F42D1/00—Blasting methods or apparatus, e.g. loading or tamping
    • F42D1/04—Arrangements for ignition
    • F42D1/045—Arrangements for electric ignition

Definitions

  • the present invention relates to pyrotechnic detonators, an more particularly, to a detonator with an ignition element that includes a transistor-style sealed header feedthrough.
  • pyrotechnic detonators an more particularly, to a detonator with an ignition element that includes a transistor-style sealed header feedthrough.
  • timed detonation can be accomplished by detonators that use pyrotechnic delays, sequential-type blasting machines, and electronically programmable detonators.
  • Such detonators are subject to one or more drawbacks, however, such a s the following: (1) the use of an ignition element that is difficult to manufacture to precise dimensions so as to ensure predictable performance, (2) the use of an ignition element that requires careful handling during manufacturing and thus impedes the beneficial incorporation of automated steps in the detonator assembly process, (3) the use of an lgnction charge that contains lead, which presents an environmental and health hazard, (4) the use of a non-low energy ignition element, which inhibits compact design, (5) lack of reliability, and (6) costly manufacturing.
  • One object of the present invention is to provide a de t ona t or that incorporates a t transistor- type glass-to-metal sealed header so as to overcome or ameliorate one or more of the problems enumerated above.
  • Another objective of the present invention is to provide a detonator utilizing an ignition element having a transistor- type glass-to-metal sealed header, resulting in a reliable and economical detonator.
  • Another separate and alternative objective of the present invention is to provide a detonator utilizing an ignition element that is relatively easy to manufacture to precise dimensions w th known and proven manufacturing processes, resulting in a detonator having predictable performance.
  • OO l l It is yet another separate and alternative oojective of the present invention to provide a detonator utilizing a low energy ignition element, resulting in a detonator that may be made more compact.
  • FIG. 1 is a top sectional view of an embodiment of the present invention.
  • Fig. 2 is a partial top sectional view of the ignition element portion of the embodiment shown in Fig. 1.
  • Fig. 3 is a partial top sectional view of the ignition element portion of an alternate embodiment to that shown in Figs. 1 and 2.
  • eacn of wnicn ⁇ polications is assigned to tne assignee of tne prese r t application.
  • a detonator shell is t ypically a metal cylinder 6 to 8 mm. in diameter and from 60- 100 mm. in length).
  • Subassembly 8 is then secured in place in the shell 40 preferably by placing an elastome ⁇ c plug 46 or the like in the open end of the shell and crimping the shell 40 to the plug, or subassembly 8 can be secured using any other suitable method.
  • Subassembly 8 may have a body portion formed of an encapsulation 31 and may be formed to snugly hold subassembly 8 within the shell 40 and dampen vibrations to which the detonator may be subjected, generally in accordance with the teachings of U.S. Patent No. 6,079,332.
  • an ignition subassembly similar to that of Fig. 1 can be directly incorporated into a shell, such as by molding it directly in the shell.
  • Various other methods of incorporating a transistor-type header ignition element into a detonator in accordance with the present invention will be readily apparent, and the present invention does not require the use of a "standalone" ignition subassembly although one is shown in Fig. 1.
  • ignition element 28 includes a header assembly with a sealed electrical feedthrougn, comprising an eyelet 10 (preferably Kovar®] , insulator glass 14 (preferably a glass such a s a sodasilicate, e.g., 9010, that is chosen to form a matched seal with the eyelet and center pin), a center pin 18 ( preferably a nickel/chromium alloy), a ground pin 20, and an igniter wire 12 (preferably a low energy igniter wire with a diameter of 10 to 20 microns).
  • a sealed electrical feedthrougn comprising an eyelet 10 (preferably Kovar®] , insulator glass 14 (preferably a glass such a s a sodasilicate, e.g., 9010, that is chosen to form a matched seal with the eyelet and center pin), a center pin 18 (preferably a nickel/chromium alloy), a ground pin 20, and an igniter wire 12 (preferably a low energy igniter wire with a diameter of 10 to 20 microns).
  • the ignition element 28 further preferably includes a charge can 26 that is preferably metallic and hermetically sealed to the eyelet at circumferential through-weld 16, with an ignition charge 30 contained between the can 26 and upper surface of the header, in tight contact with igniter wire 12.
  • An insulator cup 27 may preferably be attached around the can 26 so that, except for female connectors 52 that protrude from the input end of the subassembly, the entire outer surface of ignition subassembly 8 consists of insulating material, thus electrically isolating and providing vibration and environmental protection to the components within.
  • FIG. 3 depicts an alternate header including a dogleg eyelet 10' wit an integral ground pin 19 that may be formed by stamping if tne eyelet is st ⁇ mpe ⁇ [0018]
  • a circuit board 24 ana electronic co m ponents 25 rz be provided withi cne icmtior subassembly 8, to provide a means of triggering ignition of the ignition element based on the processing of an electrical ignition signal received by connectors 52, which are electrically connected to a blasting machine or the like that powers the detonator.
  • Such electronic components are well-known and preferably include means for imparting a programmable period of delay to the ignition, means for ESD and RF protection, et cetera.
  • Circuit board 24 and electronic components 25 are preferably encapsulated together in encapsulation 31, and connected to pins 18 and 20 at contacts 22 through soldering or other suitable connection. Referring to Figs. 2 and 3, retention of the ignition element 28 to the encapsulation 31 may be enhanced by providing a lip 17 (or 17' ) at the bottom of the eyelet 10 or (10' ) .
  • the insulator cup 27 may also be held within the encapsulation 31 to facilitate its retention as well.
  • a nickel/chromium alloy, 13 micron diameter, 0.7 mm long igniter wire, and a 50 mg ignition charge of zirconium potassium perchiorate with a height of 1.0mm and a diameter of 4.3mm is suitable.
  • a minimum suitable charge is approxima ely 30 mg for a configuration of this size, as a smaller cnarge may result m an insufficient charge thickness.
  • a preferred ail-fire voltage wa y be 6 volts, and may be delivered vitr.
  • 100 microfarad c oac ⁇ t o> ⁇ included in tne electronic components 25 in a n embodiment like that depicted

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Air Bags (AREA)

Abstract

L'invention concerne un détonateur comprenant un élément d'allumage (28) traversant hermétique à socle de type transistor.
PCT/IB2003/002001 2002-05-29 2003-05-23 Detonateur comprenant un element d'allumage traversant hermetique de type transistor Ceased WO2003100346A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2003232961A AU2003232961A1 (en) 2002-05-29 2003-05-23 Detonator with an ignition element having a transistor-type sealed feedthrough

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/158,318 US20030221576A1 (en) 2002-05-29 2002-05-29 Detonator with an ignition element having a transistor-type sealed feedthrough
US10/158,318 2002-05-29

Publications (1)

Publication Number Publication Date
WO2003100346A1 true WO2003100346A1 (fr) 2003-12-04

Family

ID=29582645

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2003/002001 Ceased WO2003100346A1 (fr) 2002-05-29 2003-05-23 Detonateur comprenant un element d'allumage traversant hermetique de type transistor

Country Status (3)

Country Link
US (1) US20030221576A1 (fr)
AU (1) AU2003232961A1 (fr)
WO (1) WO2003100346A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109514115A (zh) * 2018-11-22 2019-03-26 贵州全安密灵科技有限公司 一种刚性点火头桥丝压接装置

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2804695C (fr) * 2010-07-12 2016-10-18 Detnet South Africa (Pty) Ltd Module de temporisation
EP3497397B1 (fr) 2016-08-11 2021-05-19 Austin Star Detonator Company Circuit de mise à feu pour une meilleure sécurité de sautage
WO2018119999A1 (fr) * 2016-12-30 2018-07-05 Hamlin Electronics (Suzhou) Co. Ltd Allumeur pour détonateur électronique
CN110186330A (zh) * 2019-06-03 2019-08-30 广西金建华民用爆破器材有限公司 一种电子点火延期雷管

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4819560A (en) 1986-05-22 1989-04-11 Detonix Close Corporation Detonator firing element
US4860653A (en) * 1985-06-28 1989-08-29 D. J. Moorhouse Detonator actuator
US4869170A (en) 1987-02-16 1989-09-26 Nitro Nobel Ab Detonator
US5435248A (en) 1991-07-09 1995-07-25 The Ensign-Bickford Company Extended range digital delay detonator
US5460093A (en) 1993-08-02 1995-10-24 Thiokol Corporation Programmable electronic time delay initiator
EP0717259A1 (fr) * 1994-12-14 1996-06-19 Altech Industries (Pty) Limited Détonateur
US5602360A (en) 1994-07-28 1997-02-11 Asahi Kasei Kogyo Kabushiki Kaisha Electronic delay igniter and electric detonator
US6079332A (en) 1996-11-01 2000-06-27 The Ensign-Bickford Company Shock-resistant electronic circuit assembly
US6085659A (en) 1995-12-06 2000-07-11 Orica Explosives Technology Pty Ltd Electronic explosives initiating device
FR2790077A1 (fr) * 1999-02-18 2000-08-25 Livbag Snc Allumeur electro-pyrotechnique a electronique integree
US6173651B1 (en) 1996-05-24 2001-01-16 Davey Bickford Method of detonator control with electronic ignition module, coded blast controlling unit and ignition module for its implementation
US6341562B1 (en) * 2000-02-22 2002-01-29 Autoliv Asp, Inc. Initiator assembly with activation circuitry
WO2003004959A2 (fr) * 2001-07-05 2003-01-16 Special Devices, Inc. Amorceur a circuit de commande integre

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4860653A (en) * 1985-06-28 1989-08-29 D. J. Moorhouse Detonator actuator
US4819560A (en) 1986-05-22 1989-04-11 Detonix Close Corporation Detonator firing element
US4869170A (en) 1987-02-16 1989-09-26 Nitro Nobel Ab Detonator
US5435248A (en) 1991-07-09 1995-07-25 The Ensign-Bickford Company Extended range digital delay detonator
US5460093A (en) 1993-08-02 1995-10-24 Thiokol Corporation Programmable electronic time delay initiator
US5602360A (en) 1994-07-28 1997-02-11 Asahi Kasei Kogyo Kabushiki Kaisha Electronic delay igniter and electric detonator
EP0717259A1 (fr) * 1994-12-14 1996-06-19 Altech Industries (Pty) Limited Détonateur
US6085659A (en) 1995-12-06 2000-07-11 Orica Explosives Technology Pty Ltd Electronic explosives initiating device
US6173651B1 (en) 1996-05-24 2001-01-16 Davey Bickford Method of detonator control with electronic ignition module, coded blast controlling unit and ignition module for its implementation
US6079332A (en) 1996-11-01 2000-06-27 The Ensign-Bickford Company Shock-resistant electronic circuit assembly
FR2790077A1 (fr) * 1999-02-18 2000-08-25 Livbag Snc Allumeur electro-pyrotechnique a electronique integree
US6341562B1 (en) * 2000-02-22 2002-01-29 Autoliv Asp, Inc. Initiator assembly with activation circuitry
WO2003004959A2 (fr) * 2001-07-05 2003-01-16 Special Devices, Inc. Amorceur a circuit de commande integre

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109514115A (zh) * 2018-11-22 2019-03-26 贵州全安密灵科技有限公司 一种刚性点火头桥丝压接装置
CN109514115B (zh) * 2018-11-22 2021-01-29 贵州全安密灵科技有限公司 一种刚性点火头桥丝压接装置

Also Published As

Publication number Publication date
US20030221576A1 (en) 2003-12-04
AU2003232961A1 (en) 2003-12-12

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