US3834313A - Detonator - Google Patents

Detonator Download PDF

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Publication number
US3834313A
US3834313A US00358517A US35851773A US3834313A US 3834313 A US3834313 A US 3834313A US 00358517 A US00358517 A US 00358517A US 35851773 A US35851773 A US 35851773A US 3834313 A US3834313 A US 3834313A
Authority
US
United States
Prior art keywords
transistor
initiating
diode
explosive
circuit
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 - Lifetime
Application number
US00358517A
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English (en)
Inventor
K Sato
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.)
Toyota Motor Corp
Original Assignee
Toyota Motor 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 Toyota Motor Corp filed Critical Toyota Motor Corp
Application granted granted Critical
Publication of US3834313A publication Critical patent/US3834313A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F42B3/13—Bridge initiators with semiconductive bridge

Definitions

  • Another object of the invention is to eliminate the beforementioned shortcomings.
  • the semiconductor device is in the form of a diode.
  • the source 42 is connected in a direction reverse to that direction shown in FIG. 5.
  • the values of the source 42 and the resistor 37 are such as to produce a slight forward current, too small to produce detonation, through the diode 30 and the resistor 37.
  • a detonator comprising a blasting cap including an explosion-initiating transistor having a collector and an emitter and a base, lead wires connected to the collector and emitter and base, said blasting cap having an explosive disposed close to the lead wires connected to the collector and emitter of the transistor, a checking transistor having a collector and an emitter and a base, a voltmeter, a power source, a switch, said transistors having respective paths of major current flow between said emitters and said collectors, said checking transistor being connected so that its path of major current flow is in series with the path of major current flow of the initiating transistor for checking current through the initiating transistor, a voltmeter connector to indicate the current through the initiating transistor, said transistors being connected at their base to said power source through said switch to vary the base current so that when both transistors are made conductive an explosion is set off and when either transistor is made conductive said voltmeter indicates predetermined readings in the absence of affects and other readings in the presence of defects.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Testing Of Individual Semiconductor Devices (AREA)
US00358517A 1972-05-10 1973-05-09 Detonator Expired - Lifetime US3834313A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP47045361A JPS5219291B2 (enrdf_load_stackoverflow) 1972-05-10 1972-05-10

Publications (1)

Publication Number Publication Date
US3834313A true US3834313A (en) 1974-09-10

Family

ID=12717128

Family Applications (1)

Application Number Title Priority Date Filing Date
US00358517A Expired - Lifetime US3834313A (en) 1972-05-10 1973-05-09 Detonator

Country Status (2)

Country Link
US (1) US3834313A (enrdf_load_stackoverflow)
JP (1) JPS5219291B2 (enrdf_load_stackoverflow)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4414901A (en) * 1981-03-09 1983-11-15 M.L. Aviation Company Limited Explosive device including an ignition circuit monitor
US4607814A (en) * 1983-10-13 1986-08-26 Boris Popov Ballistic recovery system
WO1997028992A1 (en) * 1996-02-09 1997-08-14 Siemens Automotive Corporation Airbag squib with temperature bias
WO1997028993A1 (en) * 1996-02-09 1997-08-14 Siemens Automotive Corporation Airbag squib with silicon circuit and energy storage
US20040013598A1 (en) * 2002-02-22 2004-01-22 Mcelrath Kenneth O. Molecular-level thermal management materials comprising single-wall carbon nanotubes
US20220136813A1 (en) * 2020-10-29 2022-05-05 Ryan Parasram Addressable Ignition Stage for Enabling a Detonator/Ignitor

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55160419A (en) * 1979-05-31 1980-12-13 Matsushita Electric Ind Co Ltd Film capacitor
JPS6037612B2 (ja) * 1980-08-06 1985-08-27 松下電器産業株式会社 積層コンデンサ
JPS63260011A (ja) * 1987-04-16 1988-10-27 マルコン電子株式会社 積層フイルムコンデンサの製造方法
CN107218852B (zh) * 2017-07-06 2019-06-07 司马博羽 一种集成半导体桥换能元件

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2976485A (en) * 1959-03-30 1961-03-21 Bendix Corp Continuity testing device for explosive igniting circuits
US3211096A (en) * 1962-05-03 1965-10-12 Texaco Experiment Inc Initiator with a p-n peltier thermoelectric effect junction
US3269315A (en) * 1964-04-02 1966-08-30 Avco Corp Explosive primer
US3634758A (en) * 1969-09-29 1972-01-11 Kdi Holex Inc Measuring the functioning time of a semiconductor electroexplosive initiator
US3758131A (en) * 1972-01-11 1973-09-11 Allied Chem Inflation apparatus for safety device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2976485A (en) * 1959-03-30 1961-03-21 Bendix Corp Continuity testing device for explosive igniting circuits
US3211096A (en) * 1962-05-03 1965-10-12 Texaco Experiment Inc Initiator with a p-n peltier thermoelectric effect junction
US3269315A (en) * 1964-04-02 1966-08-30 Avco Corp Explosive primer
US3634758A (en) * 1969-09-29 1972-01-11 Kdi Holex Inc Measuring the functioning time of a semiconductor electroexplosive initiator
US3758131A (en) * 1972-01-11 1973-09-11 Allied Chem Inflation apparatus for safety device

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4414901A (en) * 1981-03-09 1983-11-15 M.L. Aviation Company Limited Explosive device including an ignition circuit monitor
US4607814A (en) * 1983-10-13 1986-08-26 Boris Popov Ballistic recovery system
WO1997028992A1 (en) * 1996-02-09 1997-08-14 Siemens Automotive Corporation Airbag squib with temperature bias
WO1997028993A1 (en) * 1996-02-09 1997-08-14 Siemens Automotive Corporation Airbag squib with silicon circuit and energy storage
US20040013598A1 (en) * 2002-02-22 2004-01-22 Mcelrath Kenneth O. Molecular-level thermal management materials comprising single-wall carbon nanotubes
US20220136813A1 (en) * 2020-10-29 2022-05-05 Ryan Parasram Addressable Ignition Stage for Enabling a Detonator/Ignitor
US20240019234A1 (en) * 2020-10-29 2024-01-18 Ryan Parasram Addressable Ignition Stage for Enabling a Detonator/Ignitor
US12203738B2 (en) * 2020-10-29 2025-01-21 Ryan Parasram Addressable ignition stage for enabling a detonator/ignitor

Also Published As

Publication number Publication date
JPS5219291B2 (enrdf_load_stackoverflow) 1977-05-27
JPS497413A (enrdf_load_stackoverflow) 1974-01-23

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