Placing, Tamping, Or Priming Charge In Blast Hole Patents (Class 86/20.15)
  • Patent number: 9341532
    Abstract: A pressure sensing cable in one embodiment includes a polarization maintaining (PM) optic fiber having a length; and a Fiber Bragg Grating (FBG) pair formed in the PM optic fiber. The FBG pair includes a first FBG formed at a location along the length of the optic fiber. The first FBG defines a first wavelength range at which the first FBG is reflective. The FBG pair also includes a second FBG spaced a distance from the first FBG to define a FBG cavity extending between the first FBG and the second FBG. The second FBG defines a second wavelength range at which the second FBG is reflective. The first wavelength range of the first FBG and the second wavelength range of the second FBG at least partially overlap.
    Type: Grant
    Filed: March 24, 2014
    Date of Patent: May 17, 2016
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: William Albert Challener, Glen Peter Koste, Sachin Narahari Dekate, Sabarni Palit
  • Patent number: 9170081
    Abstract: There is provided an all-electric powered ANFO vehicle. The all-electric powered ANFO vehicle includes a support structure. This support structure includes a first and second section and a steering section. The support structure also includes a lift apparatus configured to deliver explosives to a mine face in a mine tunnel. A self-contained battery module is removably mounted on the support structure. A pair of wheel sets is coupled to the support structure, with each wheel set including two wheels. One wheel of each wheel set is rotably coupled on each side of the support structure. A motor is mounted on the support structure and is coupled to at least one wheel and the battery module. A motor controller, including a DC/AC inverter is coupled to the motor and the battery module.
    Type: Grant
    Filed: February 23, 2012
    Date of Patent: October 27, 2015
    Assignee: Oldenburg Group Incorporated
    Inventor: Stephen A. Rudinec
  • Publication number: 20150053105
    Abstract: A booster shell, comprising: an elongate body defining a chamber for an explosive composition, the body comprising an upper end and a lower end; an inlet at the upper end of the elongate body adapted to allow an explosive composition to be delivered into the chamber; a detonator receiving passage adapted to receive a detonator, the detonator receiving passage: (a) extending within the chamber from the upper end of the elongate body to the lower end of the elongate body; (b) being integrally formed with the elongate body; and (c) including a detonator stop at or near to the lower end of the elongate body; and a detonator lead guide adapted to receive the lead of a detonator, the detonator lead guide: (a) extending from the upper end of the elongate body to the lower end of the elongate body and (b) being integrally formed with the elongate body.
    Type: Application
    Filed: March 20, 2013
    Publication date: February 26, 2015
    Inventor: Bradley Kevin Beikoff
  • Patent number: 8950330
    Abstract: The present invention is directed to a mobile platform for the delivery of bulk explosives to a blast hole. One embodiment of the platform provides the ability to obtain weight information relating to the contents of a tank that is associated with the platform and that, in operation, contains either the bulk explosive or a constituent of the explosive. The platform comprises a vehicle with a frame, a tank, a load cell structure for connecting the frame and the tank and providing weight data relating to the contents of the tank, and a suspension system that prevents relative movement of the frame and the tank that could compromise the load cell structure. Another embodiment of the platform provides a tank for holding an explosive composition and a rotary shaft that supports a mixing blade that mixes the explosive composition within the tank. The platform further comprises bearing structure for supporting the rotary shaft that is located to deter any of the explosive composition from entering the bearing.
    Type: Grant
    Filed: June 4, 2011
    Date of Patent: February 10, 2015
    Inventor: Kevin H. Waldock
  • Patent number: 8850984
    Abstract: An explosive cartridge comprising: an explosive composition; a deactivating agent that is capable of desensitising the explosive composition; and a barrier element that prevents contact between the explosive composition and the deactivating agent and that is adapted to be at least partially removed on use of the explosive cartridge.
    Type: Grant
    Filed: January 30, 2009
    Date of Patent: October 7, 2014
    Assignees: Orica Explosives Technology Pty Ltd., Commonwealth Scientific and Industrial Research Organisation
    Inventors: Thomas Smylie, Richard John Goodridge, Deane Tunaley, Steven Kotsonis, Les Armstrong, Brad Beikoff, Alexander Bilyk, Zang Xiaoqing, Long Yu, Dong Yang Wu
  • Publication number: 20140238258
    Abstract: A colored pyrotechnic smoke-producing composition has an oxidizer, a fuel, a flame retardant, a dye, a coolant, and a binder. The oxidizer may be potassium chlorate. The fuel may be starch, dextrose, lactose, and/or sucrose. The coolant may be sodium bicarbonate or magnesium carbonate. The binder may be nitrocellulose or a halogen-free thermoplastic. The flame retardant may be one or more nitrogen-rich compounds. The composition may be in pelletized form or in the form of a solid charge. The composition may consist of on a mass basis oxidizer 20-35%, fuel 15-25%, flame retardant 5-15%, dye 27-40%, coolant 8-18%, and binder 1-2%. The invention may be a device consisting of a body filled with the composition and a first fire starter composition, and an attached squib igniter. The body may be a grenade. A process for producing the composition is also disclosed.
    Type: Application
    Filed: February 26, 2013
    Publication date: August 28, 2014
    Inventor: Lucian Stoenescu
  • Patent number: 8512489
    Abstract: Apparatus for storing and dispensing flowable explosive, the apparatus including an explosive pump for pumping flowable explosive into an explosive tank having a fluid pressure-actuated piston movable therein for expelling flowable explosive out of the explosive tank through a delivery hose fitted with an injector through which one or more additives from one or more additive tanks can he pumped by an additive pump.
    Type: Grant
    Filed: September 7, 2012
    Date of Patent: August 20, 2013
    Assignee: Orica Explosives Technology Pty Ltd
    Inventor: Marc Rancourt
  • Patent number: 8381654
    Abstract: A method of charging explosives in a substantially vertical blast borehole, with a loading density reduced in relation to that corresponding to the complete fill up of the borehole diameter. The method includes the step of introducing a charging hose in fluid connection with a nozzle into an end opening of the vertical blast borehole. The charging hose and nozzle are then moved along the blast borehole along a travel direction at a controlled rate. As the nozzle is being moved, an explosive emulsion is forced though the nozzle at a controlled pumping rate such that the emulsion is sprayed by the nozzle laterally relative to the travel direction, in an arc formation extending around an axis of the nozzle, which axis is parallel to the travel direction, and onto an inner wall of the blast hole. The pumping rate and the controlled moving rate are adjusted so as to form a coherent string of the explosive emulsion exiting from the nozzle, whereby the string only partially fills up the blast borehole diameter.
    Type: Grant
    Filed: November 6, 2009
    Date of Patent: February 26, 2013
    Assignee: Dyno Nobel Asia Pacific Pty Limited
    Inventor: Rauf Osterman
  • Patent number: 8282752
    Abstract: Apparatus for storing and dispensing flowable explosive, the apparatus including an explosive pump for pumping flowable explosive into an explosive tank having a fluid pressure-actuated piston movable therein for expelling flowable explosive out of the explosive tank through a delivery hose fitted with an injector through which one or more additives from one or more additive tanks can be pumped by an additive pump.
    Type: Grant
    Filed: January 23, 2009
    Date of Patent: October 9, 2012
    Assignee: Orica Explosives Technology Pty Ltd
    Inventor: Marc Rancourt
  • Patent number: 8261664
    Abstract: A system (10) for loading a flowable explosive into blast holes includes a mobile explosives supply unit (12) having at least one explosives feed line for feeding a flowable explosive from the supply unit (12) into a blast hole, a global positioning system (GPS) unit (14) operable to determine the position of a blast hole, and a blast hole identification processor (16) in communication with the GPS unit (14) operable to receive from the GPS unit (14) a blast hole co-ordinate position. The processor (16) is configured or programmed uniquely to identify the blast hole based on the co-ordinate position of the blast hole.
    Type: Grant
    Filed: May 13, 2008
    Date of Patent: September 11, 2012
    Assignee: AEL Mining Services Limited
    Inventors: Horst Wolfgang Friedrich Von Lengeling, Ewan James Sellers, Mauritz Kotze, Peter Robert Wight
  • Patent number: 8240520
    Abstract: A method and apparatus for extruding viscous materials is provided. A dispenser comprises a control mechanism(s), a material containing structure and ports adapted to be coupled to a portable high-pressure gas source. A user controls a flow of the high-pressure gas with a control mechanism such as a trigger. The gas moves a piston inside the material containing structure and displaces viscous materials, such as an explosive, out of the structure through an output port or an output port coupled to a nozzle. A transparent materials tube may be provided to facilitate visual monitoring of the material flow. Localized and system wide pressure is controlled by structural design, material application on a structural component or control mechanisms to mitigate or eliminate a possibility of unintended effects from extrusion of the material including explosion due to overly high pressures between components of the extruder system.
    Type: Grant
    Filed: April 2, 2008
    Date of Patent: August 14, 2012
    Assignee: United States of America as represented by the Secretary of the Navy
    Inventors: James Eric Scheid, Larry Boivin
  • Patent number: 7971534
    Abstract: The present invention is directed to a mobile platform for the delivery of bulk explosives to a blast hole. One embodiment of the platform provides a tank for holding an explosive composition and a rotary shaft that supports a mixing blade that mixes the explosive composition within the tank. The platform further comprises bearing structure for supporting the rotary shaft that is located to deter any of the explosive composition from entering the bearing.
    Type: Grant
    Filed: September 19, 2005
    Date of Patent: July 5, 2011
    Inventor: Kevin H. Waldock
  • Publication number: 20100107917
    Abstract: An explosive cartridge for generating an explosion in a blast hole, the explosive cartridge comprising a flexible casing for containing an explosive and a mechanism for expanding the casing in a first direction and for simultaneously contracting the casing in a second direction which differs from the first direction.
    Type: Application
    Filed: September 27, 2007
    Publication date: May 6, 2010
    Applicant: Montanuniversitat Leoben
    Inventor: Peter Moser
  • Publication number: 20090314177
    Abstract: A tamping device (10) for plugging an open end of a blasting hole used in a mine blasting application comprising an expandable sleeve (20) having a bore. The sleeve is configurable between circumferentially expanded and circumferentially retracted positions. An actuation member (40) having a head section (41) is at least partially locatable inside the expandable sleeve. The head section and the expandable sleeve are adapted in order for relative longitudinal movement between the head section and the expandable sleeve, to cause the sleeve to be manipulated from the retracted position to the expanded position.
    Type: Application
    Filed: June 19, 2008
    Publication date: December 24, 2009
    Inventors: George Laszlo, Moshe Josef
  • Patent number: 7258054
    Abstract: A method and apparatus for placement of continuous pre-split, gel explosive in an elongated borehole or cavity. An anchor is attached to one end of a selected length of continuous gel explosive. A suitable anchor is a flexible, plastic “pilgrim's hat” with a hole in the narrow, closed end. The size of the anchor depends on the width of the borehole; the flared skirt should be narrow enough to permit insertion of the anchor into the hole but wide enough to resist removal. One end of the explosive charge is pressed through the hole in the anchor. The remainder of the length of explosive is placed inside a tubular member, such as PVC pipe. The loaded pipe then is inserted into the borehole or cavity with the anchor leading. The pipe is used to push the anchor back into the hole to the desired depth. Then, the pipe is withdrawn. The flexible skirt on the anchor engages the sidewall of the borehole and thus resists removal with the pipe.
    Type: Grant
    Filed: March 4, 2004
    Date of Patent: August 21, 2007
    Assignee: UTeC Corporation, LLC
    Inventors: Paul S. Keeling, Brian F. Loader
  • Patent number: 7069862
    Abstract: A tool (12) has a body (14) with a barrel (18) having opposing threaded and fitted openings (30 and 28). An actuator pin tube (26), for slidably engaging an actuator pin (38) having a tip (40) opposing a retention head (42), extending from the fitted opening (30). A spring assembly (24), disposed in the barrel (18), has a hammer guide (44) engaged in the threaded opening (28) with a hammer (46) slidably engaged therein, a handle mechanism (55) disposed at one end and a spring retainer (52) disposed adjacent the other end of the hammer (46) before a hammerhead (51), and a spring (54) engaged between the hammer guide (44) and the spring retainer (52). A release mechanism (56) engages the hammer (46). A kit (108) containing the tool (12) and a method of operating the tool (12) involving drilling and cleaning a borehole, inserting a cartridge and tool therein, and detonating the load remotely using a pull cord.
    Type: Grant
    Filed: July 29, 2003
    Date of Patent: July 4, 2006
    Inventor: Carroll Bassett
  • Patent number: 6901865
    Abstract: Primer casing (1) comprising sleeve portion (5) and leading portion (5a), wherein sleeve portion (5) includes tabs (6) to retain primer (11) and blasthole engagement means (2), and wherein leading portion (5a) comprises nose cone (8). Engagement means (2) comprises an array of rigid, multiple projections that are hinged and movable between a retracted position and a blasthole engagement position. Explosive loading hose (13) locales within hose receiving sleeve (7) and can be used to push primer casing (1) into the desired location within the blasthole prior to filling the blasthole with bulk explosive. Methods of loading a blasthole comprising inserting primer (11) into primer casing (1) and positioning primer casing (1) at a desired location in a blasthole are also described and claimed.
    Type: Grant
    Filed: July 7, 2000
    Date of Patent: June 7, 2005
    Assignee: Orica Explosives Technology Pty. Ltd.
    Inventors: Steven Thomson, Anthony M. Palmer, Andrew D. Hunter
  • Patent number: 6722251
    Abstract: A method and apparatus for placement of continuous pre-split, gel explosive in an elongated borehole or cavity. An anchor is attached to one end of a selected length of continuous gel explosive. A suitable anchor is a flexible, plastic “pilgrim's hat” with a hole in the narrow, closed end. The size of the anchor depends on the width of the borehole; the flared skirt should be narrow enough to permit insertion of the anchor into the hole but wide enough to resist removal. One end of the explosive charge is pressed through the hole in the anchor. The remainder of the length of explosive is placed inside a tubular member, such as PVC pipe. The loaded pipe then is inserted into the borehole or cavity with the anchor leading. The pipe is used to push the anchor back into the hole to the desired depth. Then, the pipe is withdrawn. The flexible skirt on the anchor engages the sidewall of the borehole and thus resists removal with the pipe.
    Type: Grant
    Filed: October 31, 2002
    Date of Patent: April 20, 2004
    Assignee: UTeC Corporation, L.L.C.
    Inventors: Paul S. Keeling, Brian F. Loader
  • Patent number: 6591731
    Abstract: A method and apparatus for drilling and penetrating hard materials utilizes a high velocity gun system that fires multiple shots of a projectile and an energetic slurry at the surface of the material to be penetrated. The penetrating device includes one or more firing barrels that are loaded with a propellant, a projectile and an energetic (explosive) slurry, and are controlled to fire in a preselected firing sequence. The projectile enters the material to be penetrated generating a hole into which the energetic slurry is also fired. The energetic slurry detonates upon contact with the material causing an explosion that further fractures the material and which blows the material out of the hole. The process is repeated until a desired penetration depth is obtained.
    Type: Grant
    Filed: April 24, 2002
    Date of Patent: July 15, 2003
    Assignee: Apti, Inc.
    Inventor: Yeshayahu S. Goldstein
  • Patent number: 6564686
    Abstract: A method and apparatus for placement of continuous pre-split, gel explosive in an elongated borehole or cavity. An anchor is attached to one end of a selected length of continuous gel explosive. A suitable anchor is a flexible, plastic “pilgrim's hat” with a hole in the narrow, closed end. The size of the anchor depends on the width of the borehole; the flared skirt should be narrow enough to permit insertion of the anchor into the hole but wide enough to resist removal. One end of the explosive charge is pressed through the hole in the anchor. The remainder of the length of explosive is placed inside a tubular member, such as PVC pipe. The loaded pipe then is inserted into the borehole or cavity with the anchor leading. The pipe is used to push the anchor back into the hole to the desired depth. Then, the pipe is withdrawn. The flexible skirt on the anchor engages the sidewall of the borehole and thus resists removal with the pipe.
    Type: Grant
    Filed: August 11, 2000
    Date of Patent: May 20, 2003
    Assignee: UTeC Corporation, L.L.C.
    Inventors: Paul S. Keeling, Brian F. Loader
  • Patent number: 6557448
    Abstract: This invention relates to a method of delivering a water-based explosive by feeding a water-based explosive and a fluid non-explosive carrier into a tubular delivery member in order that the water-based explosive defines a plurality of bodies separated from each other by the carrier. The method further includes the step of feeding the bodies of water-based explosive separated by the carrier through the tubular delivery member to a point of delivery. The invention also relates to a system for delivering a water-based explosive especially to a system for carrying out the above method.
    Type: Grant
    Filed: June 12, 2001
    Date of Patent: May 6, 2003
    Assignee: Sasol Chemical Industries Limited
    Inventors: Mark Owen Delagey, Gary Ashley Austen, Derik Strydom
  • Publication number: 20030079601
    Abstract: A method and apparatus for placement of continuous pre-split, gel explosive in an elongated borehole or cavity. An anchor is attached to one end of a selected length of continuous gel explosive. A suitable anchor is a flexible, plastic “pilgrim's hat” with a hole in the narrow, closed end. The size of the anchor depends on the width of the borehole; the flared skirt should be narrow enough to permit insertion of the anchor into the hole but wide enough to resist removal. One end of the explosive charge is pressed through the hole in the anchor. The remainder of the length of explosive is placed inside a tubular member, such as PVC pipe. The loaded pipe then is inserted into the borehole or cavity with the anchor leading. The pipe is used to push the anchor back into the hole to the desired depth. Then, the pipe is withdrawn. The flexible skirt on the anchor engages the sidewall of the borehole and thus resists removal with the pipe.
    Type: Application
    Filed: October 31, 2002
    Publication date: May 1, 2003
    Inventors: Paul S. Keeling, Brian F. Loader
  • Patent number: 6520089
    Abstract: A method for setting and igniting a charge of explosives for geological investigations, comprising the following steps: a hole (14) is drilled in the ground (12) which is to be investigated; an explosion chamber (22) is hollowed out, whereby said explosion chamber has an expanded form in relation to the bore hole (14) at the end of said bore hole (14); an ignition element (34) and an explosive container (36) containing an explosive in a protective blister (54) surrounding the ignition element are lowered down into the explosion chamber (22); the explosive (42) is pressed out of the explosive container (36) into the explosive chamber (22) and the ignition element (34) is ignited In comparison with conventional methods, the inventive method provides for a considerably smaller diameter of bore hole, whereby said bore hole is substantially easier to drill.
    Type: Grant
    Filed: April 12, 2002
    Date of Patent: February 18, 2003
    Assignee: DYNAenergetics GmbH & Co. KG
    Inventors: Aurellius Avanci, Pierre Corre, Rolf Rospek
  • Patent number: 6502631
    Abstract: Reinforced borehole plugs useful in the presplitting and blast removal of earth formations, the improvements provided by the invention comprising inflatable devices intended to support stemming, explosives and the like at suspended locations within a borehole to produce desired blast results. The borehole plugs of the invention comprise inflatable sport balls such as are used on playgrounds as toys and which are reinforced according to the invention to maintain inflation within a borehole, a characteristic which playground balls can only inconsistently provide. The borehole plugs of the invention are preferably inflatable through use of valve structures which permit pumping of an inflating fluid into the plugs once the plugs are respectively suspended at desired locations within boreholes prior to filling the boreholes in whole or in part with stemming and/or explosives and the like.
    Type: Grant
    Filed: June 4, 2001
    Date of Patent: January 7, 2003
    Inventor: Daniel F. Fitzgibbon
  • Patent number: 6405628
    Abstract: A method and apparatus for drilling and penetrating hard materials utilizes a high velocity gun system that fires multiple shots of a projectile and an energetic slurry at the surface of the material to be penetrated. The penetrating device includes one or more firing barrels that are loaded with a propellant, a projectile and an energetic (explosive) slurry, and are controlled to fire in a preselected firing sequence. The projectile enters the material to be penetrated generating a hole into which the energetic slurry is also fired. The energetic slurry detonates upon contact with the material causing an explosion that further fractures the material and which blows the material out of the hole. The process is repeated until a desired penetration depth is obtained.
    Type: Grant
    Filed: August 17, 1999
    Date of Patent: June 18, 2002
    Assignee: Apti, Inc.
    Inventor: Yeshayahu S Goldstein
  • Patent number: 6401588
    Abstract: A system and method are provided for delivering emulsion explosive compositions into a borehole by means of an oversized diaphragm pump, which provides a relatively constant flow rate for the pumped emulsion explosive composition thereby minimizing flow pulsations during delivery.
    Type: Grant
    Filed: February 17, 2000
    Date of Patent: June 11, 2002
    Assignee: Dyno Nobel Inc.
    Inventors: Kerry S. Atkinson, John B. Halander
  • Patent number: 6397754
    Abstract: A method and a device for charging boreholes (11) with explosives. One end of the charging hose (3) is introduced to a substantially predetermined distance from the bottom of the borehole. Subsequently, a pumpable explosive is pumped through the charging hose at a controlled rate and substantially simultaneously with the pumping of the explosive the charging hose is withdrawn from the borehole at a controlled rate. The explosive is caused to flow out from a nozzle (13), arranged on said end of the charging hose (3), in the form of a hollow cone (18) and at high pressure, so that the outflowing explosive is given increased viscosity and by virtue of the high outflow rate cohesively adheres to the entire cylinder-shaped wall portion (19) of the borehole (11), upon which the explosive impinges in connection with said outflowing. With the aid of a centering device (14), the nozzle (13) is centered in the borehole (11).
    Type: Grant
    Filed: November 18, 1999
    Date of Patent: June 4, 2002
    Assignee: Nitro Nobel AB
    Inventor: Hans Perlid
  • Patent number: 6397719
    Abstract: A method for loading and sensitizing a slurry explosive in a borehole or in a cartridge, where a gassing agent is added as a thin string inside the slurry explosive after the explosive has been pumped into a loading pipe, and wherein the slurry explosive and a gassing agent are mixed at the end of the loading pipe and sensitized in the borehole or the cartridge. Optionally the loading pipe is lubricated with water or a water solution to reduce the pump pressure.
    Type: Grant
    Filed: June 8, 2000
    Date of Patent: June 4, 2002
    Assignee: Dyno Nobel ASA
    Inventor: Jan Hans Vestre
  • Publication number: 20020035917
    Abstract: This invention relates to a method of delivering a water-based explosive by feeding a water-based explosive and a fluid non-explosive carrier into a tubular delivery member in order that the water-based explosive defines a plurality of bodies separated from each other by the carrier. The method further includes the step of feeding the bodies of water-based explosive separated by the carrier through the tubular delivery member to a point of delivery. The invention also relates to a system for delivering a water-based explosive especially to a system for carrying out the above method.
    Type: Application
    Filed: June 12, 2001
    Publication date: March 28, 2002
    Inventors: Mark Owen Delagey, Gary Ashley Austen, Derik Strydom
  • Patent number: 6210122
    Abstract: An explosive slurry is positioned in the interior of a pressure tank. A liquid is introduced into the interior of the pressure tank and into direct contact with the slurry. The slurry is forced out of the interior of the pressure tank to a position of utilization by the pressure of the liquid and without passing the slurry through a pump.
    Type: Grant
    Filed: June 4, 1999
    Date of Patent: April 3, 2001
    Assignee: Dyno Industrier ASA
    Inventor: Oddvar Brøndbo