AU5125373A - Detonator sequential activation - Google Patents

Detonator sequential activation

Info

Publication number
AU5125373A
AU5125373A AU51253/73A AU5125373A AU5125373A AU 5125373 A AU5125373 A AU 5125373A AU 51253/73 A AU51253/73 A AU 51253/73A AU 5125373 A AU5125373 A AU 5125373A AU 5125373 A AU5125373 A AU 5125373A
Authority
AU
Australia
Prior art keywords
detonator
sequential activation
sequential
activation
detonator sequential
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
AU51253/73A
Inventor
George Albert Oliver
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.)
Exec Pty Ltd
African Explosives and Chemical Industries Ltd
Original Assignee
Exec Pty Ltd
African Explosives and Chemical Industries Ltd
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 Exec Pty Ltd, African Explosives and Chemical Industries Ltd filed Critical Exec Pty Ltd
Publication of AU5125373A publication Critical patent/AU5125373A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H61/00—Electrothermal relays
    • H01H61/02—Electrothermal relays wherein the thermally-sensitive member is heated indirectly, e.g. resistively, inductively
    • 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
    • F42D1/05—Electric circuits for blasting
    • F42D1/055—Electric circuits for blasting specially adapted for firing multiple charges with a time delay
    • 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
    • F42D1/06—Relative timing of multiple charges
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H37/00—Thermally-actuated switches
    • H01H37/74—Switches in which only the opening movement or only the closing movement of a contact is effected by heating or cooling
    • H01H37/76—Contact member actuated by melting of fusible material, actuated due to burning of combustible material or due to explosion of explosive material
    • H01H37/767—Normally open

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Fuses (AREA)
  • Air Bags (AREA)
AU51253/73A 1972-01-19 1973-01-19 Detonator sequential activation Expired AU5125373A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ZA720375A ZA72375B (en) 1972-01-19 1972-01-19 Sequential activation of electrical apparatus

Publications (1)

Publication Number Publication Date
AU5125373A true AU5125373A (en) 1974-07-25

Family

ID=25564393

Family Applications (1)

Application Number Title Priority Date Filing Date
AU51253/73A Expired AU5125373A (en) 1972-01-19 1973-01-19 Detonator sequential activation

Country Status (5)

Country Link
US (1) US3836884A (en)
AU (1) AU5125373A (en)
CA (1) CA982635A (en)
GB (1) GB1422557A (en)
ZA (1) ZA72375B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5204799A (en) * 1990-03-22 1993-04-20 Gpt Limited Protective arrangement for telecommunications line interface circuit
CN202632917U (en) * 2010-12-31 2012-12-26 厦门赛尔特电子有限公司 Device combining temperature fuse and resistor

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1829149A (en) * 1927-08-20 1931-10-27 American Electrical Company Thermostat
US2085379A (en) * 1935-08-08 1937-06-29 Clarence L Metzgar Fire alarm apparatus
US2501457A (en) * 1945-07-20 1950-03-21 Fenwal Inc Fire detector cable
US2779014A (en) * 1950-03-21 1957-01-22 Whitman D Mounce Stepping switch
US2832265A (en) * 1956-01-03 1958-04-29 Century Engineers Inc Squib firing intervalometer
US3386063A (en) * 1960-10-03 1968-05-28 Gen Electric Temperature responsive fuses and apparatus embodying such fuses

Also Published As

Publication number Publication date
GB1422557A (en) 1976-01-28
US3836884A (en) 1974-09-17
ZA72375B (en) 1973-06-27
CA982635A (en) 1976-01-27

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