WO2003004960A1 - Systeme dote de cartouches explosives connectables - Google Patents

Systeme dote de cartouches explosives connectables Download PDF

Info

Publication number
WO2003004960A1
WO2003004960A1 PCT/IB2002/002520 IB0202520W WO03004960A1 WO 2003004960 A1 WO2003004960 A1 WO 2003004960A1 IB 0202520 W IB0202520 W IB 0202520W WO 03004960 A1 WO03004960 A1 WO 03004960A1
Authority
WO
WIPO (PCT)
Prior art keywords
cartridge
cartridges
interlocking
cartridge system
connector element
Prior art date
Application number
PCT/IB2002/002520
Other languages
English (en)
Inventor
Barry Anthony Hodgkinson
Dederick Christiaan Hattingh
Nigel Rogers
Original Assignee
Barry Anthony Hodgkinson
Dederick Christiaan Hattingh
Nigel Rogers
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 Barry Anthony Hodgkinson, Dederick Christiaan Hattingh, Nigel Rogers filed Critical Barry Anthony Hodgkinson
Publication of WO2003004960A1 publication Critical patent/WO2003004960A1/fr

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
    • F42B3/02—Blasting cartridges, i.e. case and explosive adapted to be united into assemblies

Definitions

  • This invention relates to a cartridge system, more particularly to a system of cartridges used for breaking or fracturing hard materials such as concrete and rock.
  • Cartridges filled with gas producing substances are widely used for the excavation of hard materials, for example in mining and the demolition of concrete structures. Such cartridges are typically inserted into a hole drilled into the material in question and later ignited.
  • carrier denotes any container for insertion into a hole formed in a hard material for the purpose of assisting in breaking or fracturing such material irrespective of the contents of the container.
  • gas producing substance means any substance which can be activated to result in the production of large volumes of gas and includes explosives, propellants and similar substances which can undergo a rapid transformation from either a solid or liquid to a gas.
  • a cartridge system comprising at least two elongate cartridges and at least one connector element shaped to receive an end of each of a pair of cartridges to secure the cartridges end to end.
  • each connector element and each cartridge to have complementary interlocking formations; for each cartridge to have an interlocking formation at each end thereof; and for each connector element to provide a pair of oppositely disposed interlocking formations.
  • Still further features of the invention provide for the interlocking formations to provide a spigot socket fit; and for the interlocking formations to include inclined teeth to prevent separation of the formations once engaged.
  • cartridges to be filled with a gas producing substance or stemming material; for the cartridges to be rigid or flexible; for the cartridges to be part circular in cross-section; and for the cartridges to be formed from a plastics material.
  • a still further preferred feature of the invention provide for at least one of the formations on a cartridge to be engageable by a cartridge extraction tool.
  • the invention also provides a connector element for use in a cartridge system substantially as defined above.
  • the invention further provides a cartridge for use in a cartridge system substantially as defined above.
  • Figure 1 is a perspective view of a first embodiment of a cartridge system
  • Figure 2 is a perspective view of a second embodiment of a cartridge system.
  • a cartridge system (1) is shown in Figure 1 and includes a pair of elongate tubular cartridges (21 , 22) and a connector element (25).
  • the cartridges (25) are substantially circular in cross-section and moulded from a plastics material with spigots (23) extending centrally from each end.
  • a central circumferential groove (24) extends about each spigot (23).
  • a groove (28) also extends longitudinally along the outer surface of the cartridge (21) between spigots (23) and operatively receives a length of shock tube (29) extending from an igniter (not shown) inserted into the cartridge (21).
  • the connecting element (25) has a tubular body (26) with a socket (27) in each end thereof.
  • Each socket (27) has a radially inwardly extending circumferential lip (24A) and is configured to fit over a spigot (23) on a cartridge (21, 22) with the lip (24A) providing a snap fit in a complementary groove (24) on a spigot (23).
  • the cartridges (21, 22) can be joined end to end by inserting a spigot (23) of one cartridge (21) into a socket (27) in the connecting element (25) until the groove (24) snaps over the lip (24A) provided in the socket (27).
  • a spigot (23) on the other cartridge (22) is similarly secured in the opposite socket (27) in the connecting element (25).
  • the spigots (23) and sockets (27) thus act as interlocking formations on the cartridges (21, 22) and connector element (26). Once secured in this manner the cartridges cannot be separated without being damaged and can be inserted as a unit into a hole (not shown).
  • the groove (28) assists in preventing the shock tube (10) from being pinched between the cartridge (21) and the sides of the hole.
  • the cartridge (21) is rigid and filled with a propellant mixture (not shown) while the sides of the cartridge (22) are flexible and a cartridge (22) filled with a particulate stemming material (not shown).
  • a number of propellant filled cartridges can thus be joined to, or interspersed with, cartridges filled with stemming material in so doing simplifying the process of loading a hole with a charge and stemming material.
  • all of the cartridges could be filled with a propellant or other energetic substance and an igniter could be provided for each or any of the cartridges.
  • a convenient and easily used cartridge system is thus provided which allows an operator to assemble a charge before insertion into a hole.
  • the interlocking formations have the further advantage that they are easily engageable by a complementary shaped cartridge extraction tool (not shown).
  • a complementary shaped cartridge extraction tool (not shown).
  • the tool can be inserted into the hole to engage the end of the cartridge and withdraw it from the hole. This is especially useful where misfires have occurred.
  • the cartridges provided by the invention can be configured to individually comply with regulations and assembled to user requirements immediately prior to use.
  • the system (30) can have cartridges (30, 31) of different shapes and these need not be provided with interlocking formations at both ends.
  • an end cartridge (30) is chisel shaped at one end (33) and provides a socket (not shown) at the opposite end (34) which receives a complementary spigot (35) provided by a connecting element (36) having a pair of oppositely disposed such spigots (35) separated by a flange (37).
  • the other of the spigots is shown inserted into a complementary socket (not shown) in the end (37) of a cartridge (31 ) forming part of the body of the unit.
  • the cartridge (31) also has a socket (not shown) at its opposite end (39) to the spigot (35) for receiving a spigot of a further connector element (not shown) or an end cap (40).
  • the chisel shaped end (33) on the end cartridge (30) assists in preventing the expulsion of particulate stemming material filling a hole when ignited and can be fitted to a charge made up of a number of cartridges forming the body of the unit.
  • the spigots (35) of connecting element (36), and that of the end cap (40), have a series of rearwardly inclined circumferential teeth (41) which operatively engage complementary teeth in a socket to prevent removal of a spigot from a socket.
  • the sides of the spigots (35) and sockets have a flattened surface (43) which ensures that parts can only have one angular orientation.
  • cartridges could contain any suitable gas producing substance or stemming material or could even be empty where a void is desired. Also, the cartridges could themselves form part of an igniter which fits into larger cartridges.
  • each cartridge could be fitted with an igniter and igniters could be made to be removable from the cartridges.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

L'invention concerne un système de cartouches possédant au moins deux cartouches (21, 22) dotées de formations de verrouillage (24) permettant aux cartouches d'être assemblées extrémité à extrémité au moyen d'un élément (25) de connexion pourvu de formations (24A) de verrouillage complémentaires.
PCT/IB2002/002520 2001-07-02 2002-07-01 Systeme dote de cartouches explosives connectables WO2003004960A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ZA01/2678 2001-07-02
ZA200102678 2001-07-02

Publications (1)

Publication Number Publication Date
WO2003004960A1 true WO2003004960A1 (fr) 2003-01-16

Family

ID=25589126

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2002/002520 WO2003004960A1 (fr) 2001-07-02 2002-07-01 Systeme dote de cartouches explosives connectables

Country Status (1)

Country Link
WO (1) WO2003004960A1 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7210409B2 (en) * 2003-02-03 2007-05-01 Johnson Hi-Tech (Australia) Pty. Modular explosives cartridge and novel spider construction
WO2008092282A1 (fr) * 2007-02-02 2008-08-07 Mattson Inter Tool Gmbh Cartouche de tir des mines et procédé de tir
US7628806B2 (en) 2003-08-20 2009-12-08 Boston Scientific Scimed, Inc. Stent with improved resistance to migration
WO2011117337A1 (fr) * 2010-03-24 2011-09-29 Dynaenergetics Gmbh & Co. Kg Système de cartouches pour charges explosives encartouchées
US8960093B2 (en) 2011-04-12 2015-02-24 Dynaenergetics Gmbh & Co. Kg Igniter with a multifunctional plug
EP2802840A4 (fr) * 2012-01-13 2016-01-06 Los Alamos Nat Security Llc Procédé de fracturation géologique et structure géologique fracturée en résultant
WO2016053428A3 (fr) * 2014-06-25 2016-09-01 Los Alamos National Security, Llc Système de fracturation explosif à multiphases
WO2019070110A1 (fr) * 2017-10-03 2019-04-11 Fabriser, S.A. De C.V. Contenant pliable pour explosions, antistatique capable de se comprimer partiellement et ses accessoires

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2887953A (en) * 1955-03-08 1959-05-26 Mager Herbert Explosive cartridge
FR1216794A (fr) * 1959-05-17 1960-04-27 A Pomeon & Cie Ets Dispositif d'assemblage de tubes notamment des cartouches explosives pour sondages et autres
FR1217461A (fr) * 1959-02-24 1960-05-04 Colonne explosive
FR1261504A (fr) * 1960-06-22 1961-05-19 Cartouche pour tir sismique
US3195928A (en) * 1960-06-07 1965-07-20 Wasagchemie Ag Coupling for pipes and the like

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2887953A (en) * 1955-03-08 1959-05-26 Mager Herbert Explosive cartridge
FR1217461A (fr) * 1959-02-24 1960-05-04 Colonne explosive
FR1216794A (fr) * 1959-05-17 1960-04-27 A Pomeon & Cie Ets Dispositif d'assemblage de tubes notamment des cartouches explosives pour sondages et autres
US3195928A (en) * 1960-06-07 1965-07-20 Wasagchemie Ag Coupling for pipes and the like
FR1261504A (fr) * 1960-06-22 1961-05-19 Cartouche pour tir sismique

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7210409B2 (en) * 2003-02-03 2007-05-01 Johnson Hi-Tech (Australia) Pty. Modular explosives cartridge and novel spider construction
US7628806B2 (en) 2003-08-20 2009-12-08 Boston Scientific Scimed, Inc. Stent with improved resistance to migration
WO2008092282A1 (fr) * 2007-02-02 2008-08-07 Mattson Inter Tool Gmbh Cartouche de tir des mines et procédé de tir
US8028624B2 (en) 2007-02-02 2011-10-04 Mattson Inter Tool Gmbh Rock-blasting cartridge and blasting method
WO2011117337A1 (fr) * 2010-03-24 2011-09-29 Dynaenergetics Gmbh & Co. Kg Système de cartouches pour charges explosives encartouchées
US8960093B2 (en) 2011-04-12 2015-02-24 Dynaenergetics Gmbh & Co. Kg Igniter with a multifunctional plug
EP2802840A4 (fr) * 2012-01-13 2016-01-06 Los Alamos Nat Security Llc Procédé de fracturation géologique et structure géologique fracturée en résultant
WO2016053428A3 (fr) * 2014-06-25 2016-09-01 Los Alamos National Security, Llc Système de fracturation explosif à multiphases
US10480301B2 (en) 2014-06-25 2019-11-19 Triad National Security, Llc Multi-phasic explosive fracturing system
WO2019070110A1 (fr) * 2017-10-03 2019-04-11 Fabriser, S.A. De C.V. Contenant pliable pour explosions, antistatique capable de se comprimer partiellement et ses accessoires
US11236974B2 (en) 2017-10-03 2022-02-01 Fabriser, S.A. De C.V. Anti-static, folding container for blasting operations, which can be partially compressed, and associated accessories

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