GB2260752A - Cartridge dispenser - Google Patents
Cartridge dispenser Download PDFInfo
- Publication number
- GB2260752A GB2260752A GB9222087A GB9222087A GB2260752A GB 2260752 A GB2260752 A GB 2260752A GB 9222087 A GB9222087 A GB 9222087A GB 9222087 A GB9222087 A GB 9222087A GB 2260752 A GB2260752 A GB 2260752A
- Authority
- GB
- United Kingdom
- Prior art keywords
- reel
- dispenser
- cylinder
- explosive
- spindle
- 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.)
- Withdrawn
Links
- 239000002360 explosive Substances 0.000 claims abstract description 67
- 239000011111 cardboard Substances 0.000 claims abstract description 8
- 239000004033 plastic Substances 0.000 claims abstract description 6
- 229920003023 plastic Polymers 0.000 claims abstract description 6
- 239000002184 metal Substances 0.000 claims abstract description 5
- 229910052751 metal Inorganic materials 0.000 claims abstract description 5
- 239000002023 wood Substances 0.000 claims abstract 2
- 239000000203 mixture Substances 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 3
- 238000010276 construction Methods 0.000 claims description 2
- 230000014759 maintenance of location Effects 0.000 claims description 2
- 238000004806 packaging method and process Methods 0.000 description 15
- 239000000463 material Substances 0.000 description 8
- 238000003860 storage Methods 0.000 description 7
- 239000000839 emulsion Substances 0.000 description 3
- 239000011087 paperboard Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000002390 adhesive tape Substances 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 238000005474 detonation Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000000123 paper Substances 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- PAWQVTBBRAZDMG-UHFFFAOYSA-N 2-(3-bromo-2-fluorophenyl)acetic acid Chemical compound OC(=O)CC1=CC=CC(Br)=C1F PAWQVTBBRAZDMG-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 239000004035 construction material Substances 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000002939 deleterious effect Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 229920001903 high density polyethylene Polymers 0.000 description 1
- 229910001959 inorganic nitrate Inorganic materials 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D1/00—Blasting methods or apparatus, e.g. loading or tamping
- F42D1/08—Tamping methods; Methods for loading boreholes with explosives; Apparatus therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D85/00—Containers, packaging elements or packages, specially adapted for particular articles or materials
- B65D85/67—Containers, packaging elements or packages, specially adapted for particular articles or materials for web or tape-like material
- B65D85/675—Containers, packaging elements or packages, specially adapted for particular articles or materials for web or tape-like material wound in helical form
- B65D85/676—Containers, packaging elements or packages, specially adapted for particular articles or materials for web or tape-like material wound in helical form on cores
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H49/00—Unwinding or paying-out filamentary material; Supporting, storing or transporting packages from which filamentary material is to be withdrawn or paid-out
- B65H49/18—Methods or apparatus in which packages rotate
- B65H49/20—Package-supporting devices
- B65H49/26—Axial shafts or spigots
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H49/00—Unwinding or paying-out filamentary material; Supporting, storing or transporting packages from which filamentary material is to be withdrawn or paid-out
- B65H49/18—Methods or apparatus in which packages rotate
- B65H49/20—Package-supporting devices
- B65H49/32—Stands or frameworks
- B65H49/322—Enclosing boxes with supporting means for the package or reel during unwinding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
- B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
- B65H75/04—Kinds or types
- B65H75/08—Kinds or types of circular or polygonal cross-section
- B65H75/14—Kinds or types of circular or polygonal cross-section with two end flanges
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2701/00—Handled material; Storage means
- B65H2701/50—Storage means for webs, tapes, or filamentary material
- B65H2701/51—Cores or reels characterised by the material
- B65H2701/511—Cores or reels characterised by the material essentially made of sheet material
- B65H2701/5112—Paper or plastic sheet material
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Packaging Of Annular Or Rod-Shaped Articles, Wearing Apparel, Cassettes, Or The Like (AREA)
Abstract
A dispenser suitable for dispensing a continuous length explosive cartridge, or numerous cartridges joined together, comprises a cylinder 5, with flanges 7, carrying wound cartridge and being supported by bearings 3 in planar supports 2 within box 1. A box opening allows the cartridge, with detonators and detonating card, to be unwound and passed, for example, down a bore hole (Fig. 3). Spindle 6 is supported by the bearings. The dispenser may be made of wood, plastics or cardboard, with no metal. The box may enclose more than one reel. <IMAGE>
Description
EXPLOSIVES DISPENSER
This invention relates to an apparatus for storage, transportation and dispensing long lengths of explosive cartridge(s).
Dispensers for rolls of various materials are well known. Adhesive tape, string and paper towels are routinely dispensed from rolls. Australian patent AU-72750/87 describes a dispenser for dispensing sheet material from a roll. Wire is often supplied from a dispenser as described in US
Patent No. 4,978,085 and US Patent No. 3,989,203 and 4,485,984 describe creels for pile fabrics.
The dispensers of the prior art are characteristically adapted for supplying household items such as adhesive tape or hardware such as wire and cable. Such dispensers are not adapted for the safe storage, transportation and dispensing of explosive substances such as lengths of cartridged, non-rigid explosive.
The current invention was developed in order to safely, easily and inexpensively pack long length explosive cartridges for storage or transport and to provide a simple means for dispensing said long length explosive cartridges.
Explosive packaging must conform with the minimum safety requirements set out by legislation as well as protecting the product from damage or deterioration and fulfill the requirements of the consumer. The Victorian Statutory Rules 1988 No.
272, Dangerous Goods (Explosives) Regulation 1988 and the Transport Code are typical of the types of legislation with which packaging and transport must comply.
Apart from the statutory requirements for safe explosives packaging, manufacturers and suppliers desire that their explosives suffer no deterioration during transport and that they are easy and safe for the purchaser to unpack and handle.
In the packaging of explosive materials care is taken to avoid the use of metals, expecially iron or steel, due to the hazards of static electricity build up which can result in unexpected detonation.
Nails, staples and other closure devices made of metal are excluded from use in explosives packaging unless they are covered with a protective materials which adequately prevents contact between the explosive material and the metal.
Many plastics are excluded from use in direct contact with explosives in view of the hazards suchas static electricity build up.
Some components found in explosives compositions such as ammonium nitrate are highly corrosive and such properties also influence the materials used to package such compositions.
In certain explosives products the actual explosives materials is contained within cartridges which are typically cylindrical or similarly shaped wrappers. These wrappers are commonly paper or plastic film typically closed at the ends by clips.
For transport and storage such cylindrical cartridged explosives are usually packed into specifically designed plastic lined cardboard boxes.
The packaging of such cylindrical cartridges into boxes presents some packaging difficulties. It is common practice for explosive manufacturers to supply explosives cartridges of up to 200 mm diameter and 66 metres in length but greater diameters and lengths are possible. The packaging of such long length cartridges or plurality of short cartridges connected to make a long length cartridge, requires them being laid in loops in the box or carton. Whilst such cartridges are relatively flexible, looping them to fit into cartons or boxes can cause deleterious effects. For example, kinks caused by bending the cartridges may cause discontinuities in the explosive material which can result in poor propogation of the explosive front upon detonation.Furthermore, sharp bends or kinks in cartridges containing emulsion explosive compositions can result in so called "shock crystallization" of the inorganic nitrate salt(s) and loss of sensitivity and/or explosive strength of the explosives composition.
Many further problems exist with this sort of packaging. Spacial packing inefficiencies result from storing a loop in a box and with this form of storage the explosive is not secured in the carton and may suffer damage if it moves about during transportation. Jarring for example, can cause emulsion explosives to "shock crystallise" and splitting of the explosive wrapping can cause loss of containment of the explosive composition.
Removal of very long lengths of packaged explosive from a box is also very clumsy and inefficient.
Apart from the aforementioned statutory requirements and practical problems with packaging long lengths of packaged explosive, manufacturers and suppliers of explosives also seek to minimise packaging cost, weight and design complexity.
It has now been -found that the problems associated with packaging a length explosive cartridge can be lessened by the current invention.
According to the present invention there is provided a dispenser for dispensing a length of cartridged explosive which dispenser comprises:
a substantially box-shaped body defining a
chamber in which a reel of cartridged
explosive can be accommodated;
substantially planar vertical reel supports
located within said chamber at opposing faces
of said chamber each comprising an aperture
adapted to accommodate a bearing;
a reel comprising a cylinder, the axis of
which lies normal to the plane of the reel
supports, the ends of said cylinder being
adapted to seat a bearing;
and two bearings, each seated in opposing
ends of said cylinder, each bearing adapted
to one reel support thereby supporting said
reel between said reel supports so that said
reel may rotate while said reel support
remain stationary with respect to said
box-shaped body.
In a preferred embodiment the dispenser of the invention also comprises a spindle which passes essentially along the axis of the cylinder, each end of said spindle being seated in one of said bearings. Tn a particularly preferred embodiment the spindle which passes essentially along the axis of the cylinder has one fixed and one spring retention clip to hold said reel ends in said cylinder.
In a more preferred embodiment the reel of the dispenser also comprises flanges located at or near each end of said cylinder and adapted to retain a roll of cartridged explosive within the length of said reel.
In blasting operations a single long continuous cartridge may be used in the borehole but often numerous cartridges are attached together to form a long explosive cartridge. Cartridges are commonly attached together by taping them to each other or to detonating cord. Where used herein the term long length explosive cartridge is used to refer to either a single cartridge of more than 0.1 m length or numerous explosive cartridges which have been attached together.
The dispenser can be of any convenient construction materials which satisfy statutory requirements for packaging and transport of packaged explosives. In a preferred embodiment of the current invention the ends of the cylinder, the bearings and the optional spindle are plastic while the box shaped body, the reel supports and the cylinder and flanges are cardboard. In a particularly preferred embodiment the box shaped body is constructed of 5 mm thick corrugated cardboard, the reel supports are of 9 mm thick waxed double laminated corrugated cardboard, the flanges and cylinder are of 2 to 3 mm thick paperboard and the spindle, the ends of the cylinder bearings are plastic.
When empty of explosives it may be convenient if the dispenser can be converted into a condensed form for storage. Hence in a preferred embodiment of the current invention the box shaped body the reel supports, the cylinder the flanges, the bearings and the spindle can be disengaged from one another and the box shaped body folded flat. It is also preferable that the dispenser can be disassembled and re-assembled manually and without the need for tools.
Winding of long explosive cartridges onto a reel can be carried out manually however it is usually preferable that this be done automatically.
Typically in a production plant it would be preferable for the long explosive cartridge to be wound onto a reel immediately it is produced. In a preferred embodiment the reel of the current invention includes a hole in the end of the cylinder or flange which can engage a drive pin and another hole in the end of the cylinder or flange which can engage a locking pin, such that the reel can be attached by these two pins to a mechanism for rotating the cylinder in order to wind a long explosive cartridge onto the reel.
Preferred embodiments of the present invention will now be described by way of the following examples and with reference to the accompanying drawings in which:
Figure 1 is a plan view of a preferred
embodiment of the dispenser of the current
invention;
Figure 2 depicts the interrelationship
between the flanges, the cylinder, the
spindle and the bearings in a dispenser of
the present invention; and
Figure 3 depicts downhole loading using the
dispenser of the invention.
The invention depicted in Figure 1 includes a box shaped body (1), two reel supports (2), each having a recess in which may be located a bearing (3) which is seated in the end of the cylinder (4), a cylinder (5), a spindle (6) and flanges (7). The box shaped body would optimally include an opening through which the long explosive cartridge may pass or alternatively a side or flap which can be articulated to form an opening.
Figure 2 is a view of the preferred embodiment of the bearing (3) the end of the cylinder (4) the cylinder (5), the spindle (6) and optional flanges (7). It will be obvious to the person skilled in the art that the bearing can be of any convenient shape such that it allows the reel to rotate relative to the reel supports. In a preferred embodiment the bearing is flanged and relatively broad to adequately support the reel on the reel supports.
The invention described is suitable for use in the process of loading a borehole. Figure 3 shows cartridges (1), detonators (2) and detonating cord (3) located in boreholes (4). In the loading process a length of detonating cord (3) to which is taped a number of explosive cartridges is pulled by its free end from the dispenser (7) such that it unwinds from the reel (8) and is passed manually from the dispenser into a borehole (4). Once the borehole is loaded, the detonating cord can be attached to the exploder box (5).
Dispensers of the present invention have the advantage of being capable of low cost of construction and may be assembled and disassembled without the aid of tools. Dispensers of the current invention also have the advantage that in the disassembled form they can be packed relatively flat and is thus easily and conveniently transported.
Moreover, dispensers of the current invention may also be adapted to comply with the statutory regulations for packaging and transport of explosives. The dispenser may also be suitable for dispensing continuous lengths of explosive cartridges with or without detonating cord attached.
It will be apparent to the skilled artisan that further embodiments are possible. For example, more than one reel could be located in the box shaped body. This could be useful where, for example, explosives of different diameter or type are required to be dispensed together.
Alternatively, one or more of the reels may be wound with detonating cord or similar elongate explosive accessory.
Dispensers of the current invention are suitable for the storage, transport and dispensing of cartridged explosive formulations and/or elongate explosive accessory such as detonating cord.
The attributes and preferred embodiment of the invention is further revealed by the following non-limiting example.
Example
An example dispenser was constructed, loaded with a long explosive cartridge and submitted for testing according to the requirements of Packaging
Group 2 of the Australian Code of Transport for
Explosives and Dangerous Goods.
The explosive dispenser was constructed according to the following specifications. The box shaped body of the dispenser was constructed from 5 mm thick corrugated cardboard complete with collar and 100 pm thick plastic liner measuring 900 mm x 740 mm. The internal dimensions of the box were 440 mm x 440 mm x 250 mm. The reel supports consisted of double laminated, waxed, corrugated cardboard, approximately 9 mm thick and 425 mm x 425 mm square. The bearings were situated in a 75 mm circular hole cut in the centre of the reel supports. The cylinder was constructed from 3 mm thick paperboard and was of 127 mm diameter and 210 mm in length. The flanges were constructed of 2.4 mm thick paperboard, were 400 mm diameter. The bearing, ends of the cylinder and spindle were all constructed of PVC. The spindle was 25 mm diameter, 250 mm long and hollow, having a 2 mm wall thickness.
The explosives dispenser was loaded with a 35 m long, 25 mm diameter cartridge of emulsion explosive. According to the testing requirements, each of 5 boxes were independently dropped from a 1.2 m height such that they landed on one of their flat sides or a corner. The explosive dispenser fulfilled the requirements of the testing that there be no damage arising from drop testing that would be liable to affect the safe transport of the explosive.
Claims (13)
1. A dispenser for dispensing a length of cartridged explosive said dispenser comprising:
a substantially box-shaped body defining a
chamber in which a reel of cartridged
explosive can be accommodated;
two substantially planar vertical reel
supports located within said chamber at
opposing faces of said chamber each
comprising an apperture adapted to
accommodate a bearing;
a reel comprising a cylinder, the axis of
which lies normal to the plane of the reels
supports, the ends of said cylinder being
adapted to seat a bearing;
and two bearings, each seated in opposing
ends of said cylinder, each bearing adapted
to engage one reel support thereby supported
said reel between said reel supports so that
said reel may rotate while said reel supports
remain stationary with respect to said
box-shaped body.
2. A dispenser according to claim 1 wherein said dispenser also comprises a spindle which passes along the axis of said cylinder, each end of said spindle being seated in one of said bearings.
3. A dispenser according to claim 2 wherein said dispenser comprises a spindle which passes along the axis of said cylinder having one fixed and one spring retention clip which hold the reel ends in said cylinder.
4. A dispenser according to claims 1 to 3 which additionally comprises reel flanges are located at or near each end of the cylinder.
5. A dispenser according to claim 4 wherein the reel includes two holes for inserting a locating pin and a drive pin.
6. A dispenser according to any of claims 1 to 5 which can be dismantled without the use of tools to its elements consisting of the box shaped body, the reel supports, the cylinder, the reel ends, the spindle and the bearings.
7. A dispenser according to any of claims 1 to 6 which excludes metal from its construction.
8. A dispenser according to any of claims 1 to 6 in which each element is entirely constructed from wood or plastic or cardboard.
9. A dispenser according to any of claims 1 to 6 which is adapted to accommodate more than one reel of cartridged explosive.
10. A cartridged explosive composition packaged in a dispenser as defined according to any of claims 1 to 9.
11. A cartridged explosive composition or explosive accessory packaged in a dispenser as defined according to any one of claims 1 to 9.
12. A dispenser substantially as herein described with reference to the Figures 1 to 3.
13. A method of dispensing long explosive cartridges substantially as herein described.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AUPK911791 | 1991-10-25 |
Publications (2)
Publication Number | Publication Date |
---|---|
GB9222087D0 GB9222087D0 (en) | 1992-12-02 |
GB2260752A true GB2260752A (en) | 1993-04-28 |
Family
ID=3775776
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB9222087A Withdrawn GB2260752A (en) | 1991-10-25 | 1992-10-21 | Cartridge dispenser |
Country Status (2)
Country | Link |
---|---|
CA (1) | CA2080306A1 (en) |
GB (1) | GB2260752A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2715147A3 (en) * | 1994-01-19 | 1995-07-21 | Tubest Sa | Assembly for storing and paying out elongated element |
EP0716032A1 (en) * | 1994-12-09 | 1996-06-12 | AT&T Corp. | Boxed pay-out reel for optic fiber cable or wire or the like |
WO2000017084A1 (en) * | 1998-09-21 | 2000-03-30 | Via Ison Limited | Packaging of sheet metal coils |
WO2005036095A2 (en) * | 2003-10-13 | 2005-04-21 | Detnet International Limited | Detonator assembly |
CN109059688A (en) * | 2018-08-15 | 2018-12-21 | 贵州大学 | It is a kind of with support function and to facilitate fixed engineering explosion bus cable device |
US11835329B2 (en) | 2018-06-29 | 2023-12-05 | Olitek Pty Ltd | Mining vehicle |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB203028A (en) * | 1922-05-26 | 1923-08-27 | Albert Edward Isted | An improved domestic device for winding and holding wool |
GB229855A (en) * | 1924-02-21 | 1925-03-05 | Archibald Turner | Improvements in reel holders for strip and like material |
GB341983A (en) * | 1929-10-29 | 1931-01-29 | William Theodore Barnes | Improvements in or relating to boxes for holding rolls of fabric |
GB1031871A (en) * | 1964-06-30 | 1966-06-02 | South River Metal Products Co | Wire packaging and handling device |
-
1992
- 1992-10-09 CA CA 2080306 patent/CA2080306A1/en not_active Abandoned
- 1992-10-21 GB GB9222087A patent/GB2260752A/en not_active Withdrawn
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB203028A (en) * | 1922-05-26 | 1923-08-27 | Albert Edward Isted | An improved domestic device for winding and holding wool |
GB229855A (en) * | 1924-02-21 | 1925-03-05 | Archibald Turner | Improvements in reel holders for strip and like material |
GB341983A (en) * | 1929-10-29 | 1931-01-29 | William Theodore Barnes | Improvements in or relating to boxes for holding rolls of fabric |
GB1031871A (en) * | 1964-06-30 | 1966-06-02 | South River Metal Products Co | Wire packaging and handling device |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2715147A3 (en) * | 1994-01-19 | 1995-07-21 | Tubest Sa | Assembly for storing and paying out elongated element |
EP0716032A1 (en) * | 1994-12-09 | 1996-06-12 | AT&T Corp. | Boxed pay-out reel for optic fiber cable or wire or the like |
WO2000017084A1 (en) * | 1998-09-21 | 2000-03-30 | Via Ison Limited | Packaging of sheet metal coils |
WO2005036095A2 (en) * | 2003-10-13 | 2005-04-21 | Detnet International Limited | Detonator assembly |
WO2005036095A3 (en) * | 2003-10-13 | 2005-07-14 | Detnet South Africa Pty Ltd | Detonator assembly |
US11835329B2 (en) | 2018-06-29 | 2023-12-05 | Olitek Pty Ltd | Mining vehicle |
CN109059688A (en) * | 2018-08-15 | 2018-12-21 | 贵州大学 | It is a kind of with support function and to facilitate fixed engineering explosion bus cable device |
CN109059688B (en) * | 2018-08-15 | 2020-11-27 | 贵州大学 | Winding displacement device with supporting function and convenient fixation for engineering blasting |
Also Published As
Publication number | Publication date |
---|---|
GB9222087D0 (en) | 1992-12-02 |
CA2080306A1 (en) | 1993-04-26 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |