EP0208416A1 - Raccordement pour cordeau à basse énergie - Google Patents

Raccordement pour cordeau à basse énergie Download PDF

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Publication number
EP0208416A1
EP0208416A1 EP86304331A EP86304331A EP0208416A1 EP 0208416 A1 EP0208416 A1 EP 0208416A1 EP 86304331 A EP86304331 A EP 86304331A EP 86304331 A EP86304331 A EP 86304331A EP 0208416 A1 EP0208416 A1 EP 0208416A1
Authority
EP
European Patent Office
Prior art keywords
fuse
lengths
connector
length
connecting means
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.)
Granted
Application number
EP86304331A
Other languages
German (de)
English (en)
Other versions
EP0208416B1 (fr
Inventor
Jean Luc Curutchet
Wayne Guy Fensham
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.)
AECI Ltd
Original Assignee
AECI 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=25577973&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0208416(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by AECI Ltd filed Critical AECI Ltd
Priority to AT86304331T priority Critical patent/ATE41998T1/de
Publication of EP0208416A1 publication Critical patent/EP0208416A1/fr
Application granted granted Critical
Publication of EP0208416B1 publication Critical patent/EP0208416B1/fr
Expired legal-status Critical Current

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Classifications

    • 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
    • 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
    • F42D1/043—Connectors for detonating cords and ignition tubes, e.g. Nonel tubes

Definitions

  • THIS INVENTION relates to the interconnecting of low energy fuses, in particular low energy fuses such as that known by the trademark "NONEL”.
  • Low energy fuses of this type comprise plastics tubing containing a suitable explosive material.
  • a connector for interconnecting at least two lengths of low energy fuse of the type described, for transferring a shock wave front of an explosion propagating along one length of fuse to the other length of fuse which includes a hollow tubular connecting means which defines a passage and which is insertable into the lengths of fuse so that the interior of a first length of fuse is in flow communication with the interior of a second length of fuse via the passage of the connecting means; and a retaining means for retaining the connecting means in position relative to the lengths of fuse.
  • the connecting means may have two or more end portions, dependent on the number of lengths of tubing that are to be interconnected.
  • the connecting means may include at least one needle-like portion having a pointed end for piercing a wall of at least one of the lengths of fuse.
  • the needle-like portion may have a second end remote from the pointed end, which second end is fast with the retaining means, the pointed end of the needle-like portion being insertable through the walls of the two lengths of fuse when the lengths of fuse are arranged adjacent one another with their longitudinal axes parallel to one another.
  • the needle-like portion may have a second end that is also pointed, so that one of the pointed ends of the needle-­ like portion is insertable through the wall of one of the lengths of fuse and the other pointed end of the needle-like portion is insertable through the wall of the other length of fuse, the lengths of fuse being spaced from each other, in use.
  • the passage of the connecting means may, if desired, contain a primary and/or a secondary explosive.
  • the passage may also contain a pyrotechnic delay
  • the retaining means may comprise a body defining at least one seat in which a connecting region of at least one of the lengths of fuse is receivable for securely retaining the connecting means in position relative to the length of fuse.
  • the retaining means may further comprise at least one end cap which is releasably engageable with the body.
  • a chamber may be defined in the body and the needle-like portion of the connecting means may comprise two hollow elements, each having a pointed end and each projecting from the chamber, the pointed end of one element projecting out of the seat defined by the body and the pointed end of the other element projecting out of another seat defined by the body.
  • the lengths of fuse may be interconnected with one another intermediate their ends. Instead, the end of one length of fuse may be interconnected with another length of fuse intermediate its ends, in a "T"-­configuration. With this arrangement, one end portion of a connecting means that is received within an end of the fuse will be co-linear therewith and the other end portion of the connecting means will be inserted into the other length of fuse in a transverse manner. Further, if two lengths of fuse are to be interconnected with one another intermediate their ends then the end portions of the connecting means will be transversely located with respect to the lengths of fuse. It will also be understood that two lengths of fuse may be interconnected intermediate their ends with the lengths of fuse being either parallel, or transverse.
  • the connecting means may provide an angled opening, the angled opening facing in a suitable direction. Thus, it may face transversely with respect to the length of fuse or longitudinally.
  • a connector in accordance with the invention for connecting at least two lengths of low energy fuse for transferring a shock wave front of an explosion propagating along one length of fuse to the other length of fuse is designated generally by the reference numeral 10.
  • the connector 10 is used for interconnecting two lengths of fuse 12 and 14.
  • Each fuse 12, 14 comprises a length of tubing 16 having its inner walls coated with an explosive powder to form a low energy fuse such as that known by the trade mark "NONEL".
  • the connector 10 comprises a hollow tubular connecting means 18 which is pointed at both ends 20 and 22. Secured to the connecting means 18 intermediate its ends is a collar 24 made of a plastics material. The collar 24 has abutment shoulders 26 on each side. Secured to the collar 24 and extending past and around the pointed ends 20 and 22 are two clips 28 and 30 which are formed integrally with the collar 24. The clips 28 and 30 together with the abutment shoulders 26 of the collar 24 define seats 32 for securely retaining the length of tubing 16 in position relative to the connecting means 18.
  • the clips 28 and 30 are made of a suitably resilient material so that they can be bent back, the fuses 12 and 14 can be engaged with the ends 20 and 22 of the connecting means 18 so that the ends 20 and 22 pierce the tubing 16 of the fuses 12 and 14 respectively to extend into the tubing 16. The clips 28 and 30 can then be released to engage with the tubing 16 of the fuses 12 and 14 to secure them to the connecting means 18.
  • FIG. 4 another embodiment of the invention is shown.
  • two lengths of fuse 40 and 42 are inter­connected by means of a connector 44 which comprises a short length of metal tube.
  • the lengths of tubing 40 and 42 are interconnected in a "T"-config­uration with one end of the tube 44 longitudinally engaging an end of the fuse 40 and the other end portion of the tube 44 being inserted through a wall of the length of fuse 44 intermediate its ends in a transverse manner.
  • the connector 44 includes an outwardly extending flange 45 defining a shoulder against which the end of the length of fuse 40 can abut.
  • a connector in accordance with the invention is designated generally by the reference numeral 50.
  • the connector 50 comprises a connecting means 51 having a needle-like portion which is constituted by two elements 52 and 54, each having a pointed end portion 56 and 58 respectively.
  • the elements 52 and 54 project parallel to each other from a chamber 60.
  • the chamber 60 is defined by a body 62 of a retaining means 64.
  • the chamber 60 contains a primary and/or a secondary explosive and, if desired, can also contain a pyrotechnic delay.
  • the body 62 defines seats 66 within which regions of lengths of fuse 68 and 70 of the type described can seat. The lengths of fuse 68 and 70 are retained in position on the seats 66 of the body 62 by means of an end cap 72 which engages the body portion 62 and is clipped into position.
  • the connector in accordance with the invention is shown, the connector being designated generally by reference numeral 80.
  • the connector comprises a hollow tubular connecting means 82 having a needle-like portion 84.
  • the needle-like portion 84 has a pointed end 86 for piercing the walls of two lengths of fuse 88 and 90 which lie adjacent one another so that their longitudinal axes are parallel to each other.
  • the needle-like portion 84 includes a second end 92 remote from the pointed end 86.
  • the second end 92 is fast with a retaining means 94 of the connector 80.
  • the connecting means 82 defines a passage 96 so that the interior of the length of fuse 88 is in flow communi­cation with the interior of the length of fuse 90 when the needle-like portion has been inserted through the lengths of fuse 88 and 90.
  • the connector 100 comprises a connecting means 101 having a needle-like portion 102. Both ends 104 and 106 of the needle-like portion 102 are pointed to facilitate the penetration of the connecting means 101 into two lengths of fuse 108 and 110 respectively.
  • the connector 100 further includes a retaining means in the form of a body 112 which defines seats 114 on which the lengths of fuses 108 and 110 can seat. The ends 104 and 106 of the needle-like portion 102 project from the seats 114.
  • the connector 100 further includes end caps 116 which clip into the body 112 to retain the lengths of fuses 108 and 110 in position relative to the needle-like portion 102.
  • the connecting means of the various embodiments described above can have an outside diameter of about 1 mm and a length ranging from about 15 mm to 25 mm.
  • the angle of the pointed end of the connecting means of the various embodiments should be about 45° and ideally, should face towards an oncoming shock wave front of an explosion propagating down a length of fuse.
  • low energy fuses may be interconnected in a simple, effective and reliable manner.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuses (AREA)
  • Mechanical Pencils And Projecting And Retracting Systems Therefor, And Multi-System Writing Instruments (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Design And Manufacture Of Integrated Circuits (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
EP86304331A 1985-06-28 1986-06-06 Raccordement pour cordeau à basse énergie Expired EP0208416B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86304331T ATE41998T1 (de) 1985-06-28 1986-06-06 Niederenergetischer zuendschnurverbinder.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ZA854922 1985-06-28
ZA854922 1985-06-28

Publications (2)

Publication Number Publication Date
EP0208416A1 true EP0208416A1 (fr) 1987-01-14
EP0208416B1 EP0208416B1 (fr) 1989-04-05

Family

ID=25577973

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86304331A Expired EP0208416B1 (fr) 1985-06-28 1986-06-06 Raccordement pour cordeau à basse énergie

Country Status (12)

Country Link
EP (1) EP0208416B1 (fr)
AT (1) ATE41998T1 (fr)
AU (1) AU590576B2 (fr)
BR (1) BR8602961A (fr)
DE (1) DE3662727D1 (fr)
ES (1) ES8704629A1 (fr)
GB (1) GB2177483B (fr)
MW (1) MW4786A1 (fr)
NO (1) NO165362C (fr)
NZ (1) NZ216541A (fr)
ZM (1) ZM6086A1 (fr)
ZW (1) ZW12186A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0385614A2 (fr) * 1989-03-01 1990-09-05 Imperial Chemical Industries Plc Connecteur pour un tube de transmission d'un signal de détonation
WO2000020821A1 (fr) * 1998-10-06 2000-04-13 African Explosives Limited Initiateur de tube de choc
US6481392B1 (en) 1999-11-12 2002-11-19 Volvo Personvagner Ab Internal combustion engine

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ZW788A1 (en) * 1987-02-11 1988-08-31 Aeci Ltd A propagating device for low energy fuses
ZW11088A1 (en) * 1987-09-24 1989-04-19 Aeci Ltd A low energy fuse multi-connector

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1137110A (fr) * 1955-11-28 1957-05-23 Artifices Titan Soc D Amorçage pour cartouche de mine
FR95741E (fr) * 1966-11-09 1971-06-04 Ruggieri Ets Dispositif perfectionné de mise a feu pour pieces d'artifice pyrotechniques.

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB516869A (en) * 1938-06-11 1940-01-15 Rolfes Ltd Improvements in and relating to blasting detonators or capped fuses
BE503949A (fr) * 1950-06-15
GB815533A (en) * 1956-11-05 1959-06-24 Du Pont Improvements in or relating to connectors for explosive cord
FR1310549A (fr) * 1961-09-11 1962-11-30 Davey Bickford Smith & Cie Sa Relais de détonation à retard pour cordeau détonant
GB1268947A (en) * 1968-06-27 1972-03-29 Explosive Tech Improvements in or relating to the explosive forming of openings in wall-like structures
US4041867A (en) * 1974-12-04 1977-08-16 Nitro Nobel Ab Conductor containing explosive gas mixture for initiation of ignition element and explosive charge
GB1586496A (en) * 1977-06-01 1981-03-18 Cxa Ltd Explosives initiation assembly and system
SE429334B (sv) * 1978-04-07 1983-08-29 Nitro Nobel Ab Anordning vid en lagenergistubin
US4495867A (en) * 1982-06-18 1985-01-29 E. I. Du Pont De Nemours And Company Assembly for initiating explosives with low-energy detonating cord

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1137110A (fr) * 1955-11-28 1957-05-23 Artifices Titan Soc D Amorçage pour cartouche de mine
FR95741E (fr) * 1966-11-09 1971-06-04 Ruggieri Ets Dispositif perfectionné de mise a feu pour pieces d'artifice pyrotechniques.

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0385614A2 (fr) * 1989-03-01 1990-09-05 Imperial Chemical Industries Plc Connecteur pour un tube de transmission d'un signal de détonation
EP0385614A3 (fr) * 1989-03-01 1991-12-04 Imperial Chemical Industries Plc Connecteur pour un tube de transmission d'un signal de détonation
WO2000020821A1 (fr) * 1998-10-06 2000-04-13 African Explosives Limited Initiateur de tube de choc
US6481392B1 (en) 1999-11-12 2002-11-19 Volvo Personvagner Ab Internal combustion engine

Also Published As

Publication number Publication date
GB2177483B (en) 1990-04-04
NZ216541A (en) 1987-10-30
AU590576B2 (en) 1989-11-09
NO165362B (no) 1990-10-22
NO862375D0 (no) 1986-06-13
NO165362C (no) 1991-01-30
ES556733A0 (es) 1987-04-01
EP0208416B1 (fr) 1989-04-05
ZW12186A1 (en) 1988-02-03
ZM6086A1 (en) 1987-02-27
GB2177483A (en) 1987-01-21
ATE41998T1 (de) 1989-04-15
BR8602961A (pt) 1987-02-17
GB8613819D0 (en) 1986-07-09
NO862375L (no) 1986-12-29
DE3662727D1 (en) 1989-05-11
ES8704629A1 (es) 1987-04-01
AU5859086A (en) 1987-01-08
MW4786A1 (en) 1987-05-13

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