FR712281A - Mèche ou cordeau de sûreté - Google Patents

Mèche ou cordeau de sûreté

Info

Publication number
FR712281A
FR712281A FR712281DA FR712281A FR 712281 A FR712281 A FR 712281A FR 712281D A FR712281D A FR 712281DA FR 712281 A FR712281 A FR 712281A
Authority
FR
France
Prior art keywords
drill bit
safety line
safety
line
drill
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
Other languages
English (en)
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.)
DAVEY ETS
Original Assignee
DAVEY ETS
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 DAVEY ETS filed Critical DAVEY ETS
Application granted granted Critical
Publication of FR712281A publication Critical patent/FR712281A/fr
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
    • F42B3/16—Pyrotechnic delay initiators

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuses (AREA)
  • Powder Metallurgy (AREA)
FR712281D 1930-02-28 1931-02-27 Mèche ou cordeau de sûreté Expired FR712281A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US432086A US1825224A (en) 1930-02-28 1930-02-28 Safety fuse

Publications (1)

Publication Number Publication Date
FR712281A true FR712281A (fr) 1931-09-29

Family

ID=23714712

Family Applications (1)

Application Number Title Priority Date Filing Date
FR712281D Expired FR712281A (fr) 1930-02-28 1931-02-27 Mèche ou cordeau de sûreté

Country Status (3)

Country Link
US (1) US1825224A (fr)
FR (1) FR712281A (fr)
GB (1) GB374032A (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL67892C (fr) * 1947-12-31
US2759417A (en) * 1950-11-06 1956-08-21 Olin Mathieson Electric blasting cap and perforating gun containing said cap
BE514360A (fr) * 1951-11-22
BE519351A (fr) * 1952-04-21

Also Published As

Publication number Publication date
US1825224A (en) 1931-09-29
GB374032A (en) 1932-05-27

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