Class 102/311 - Patterned blasting

Subclass of Class 102 - Ammunition and explosives
Definition: Subject matter wherein there is a blasting charge at each
No. of patents: 34
Last issue date: 05/15/2012

Number	Title	Issue Date
8176848	Electronic blasting system having a pre-fire countdown with multiple fire commands A system and method for conducting a firing sequence including a master device and a plurality of electronic pyrotechnic devices, wherein the master device broadcasts, multiple times, a fire command to the plurality of electronic pyrotechnic devices, the electronic ...	05/15/2012
7681500	Method for logging a plurality of slave devices A method for logging a plurality of slave devices is suggested, comprising the following steps: a) connecting a plurality of slave devices each having an identity and a pyrotechnic charge to an electrical conduit; b) after step a), connecting a logging device compri...	03/23/2010
7650841	Positional blasting system A blasting system facilitates the actuation of a plurality of programmable detonators according to a desired blasting pattern, to cause the discharge of a plurality of associated charges, by downloading to the detonators blasting information that can be automaticall...	01/26/2010
7617775	Multiple slave logging device A multiple slave logging device, or “logger” for use in a system such as an electronic blasting system. The logger is able to communicate with multiple slave devices connected to it, and preferably also is able to communicate with a slave device connected indivi...	11/17/2009
7331291	Self-supporting air tube for blasting A self-supporting air tube for blasting and method of blasting rock using the air tube. The air tube includes an air bladder, a pair of support wings and an inlet. The air bladder has a diameter smaller than that of a blasting hole and extends longitudinally. The su...	02/19/2008
7299734	Synchronously/synergeticly timed fuse procedure or process A synchronous or synergeticly timed fuse is installed into ordnance (bombs, artillery shells, depth charges etc.), the ordnance is delivered to a target area and a simultaneous (synchronous), or a synergetic (not neccessarily synchronous yet the energies add togethe...	11/27/2007
7146913	Shaped charge tubing cutter A shaped charge detonation booster comprises a tubular wall body of substantially constant outside diameter for enclosing an axial primer path that terminates with an enlarged main cavity volume. Preferably, the main cavity is positioned within the juncture plane of...	12/12/2006
7103510	Logging of detonator usage A method of logging use of a non-electric detonator, which comprises recording identity data associated with the detonator at the time the detonator is being loaded in a blasthole, recording consumption of the detonator, and relating the identity data associated wit...	09/05/2006
6945174	Method for connecting ignitors in an ignition system Errors may occur in a detonating system that consists of several detonating circuits when the connection—the logging-on—of detonators is effected to the buses of a logger which in turn is connected to a blaster. Connecting is effected, particularly in opencast-m...	09/20/2005
6941870	Positional blasting system A blasting system facilitates the actuation of a plurality of programmable detonators according to a desired blasting pattern, to cause the discharge of a plurality of associated charges, by downloading to the detonators blasting information that can be automaticall...	09/13/2005
6772105	Blasting method Methods for evaluating drill pattern parameters such as burden, spacing, borehole diameter, etc., at a blast site are disclosed. One method involves accumulating the burden contributed by successive layers of rock and matching the accumulated rock burden to a target...	08/03/2004
6766744	Incendiary device The various embodiments provide an incendiary device utilizing a multiple hollow core-burner technique that facilitates producing large diameter cuts through steel targets. To facilitate this result, the various embodiments incorporate a multiple-core burning design...	07/27/2004
6615739	Aerodynamic projectiles and methods of making the same The invention provides aerodynamic projectiles that include a projectile shell having an aerodynamic structure and a controlled center of gravity, which exhibit improved aerodynamics and resulting accuracy, and which are suitable for non-lethal uses. Meth...	09/09/2003
6532874	Method of blasting bench of rock with improved blasting efficiency and reduced blasting nuisance The present invention relates to a blasting method of rock, by which blasting nuisances can be reduced and blasting efficiency increased. The method utilizes a blasting mechanism comprising the steps of: successively drilling a plurality of blasting holes...	03/18/2003
6527345	Method for excavating a tunnel rock face by drilling a pattern of lifter and line holes A method for excavating a tunnel rock face by drilling a pattern of lifter holes and line holes. The line holes ensure the grade or slope of the excavation meets specification while reducing the need for cleaning out the face. A longitudinal band of lifte...	03/04/2003
6523449	Perforating gun A technique includes arranging perforating charges of a perforating gun into groups of adjacent perforating charges. Each perforating charge of each group is aligned in a direction associated with the group. The groups are oriented to form a phasing for t...	02/25/2003
6371219	Oilwell perforator having metal loaded polymer matrix molded liner and case A shaped charge is provided which includes features enhancing its manufacturability. In a described embodiment, an oilwell perforator is provided which includes a case and a liner, at least one of which is a molding. The molding has a metal loaded polymer...	04/16/2002
5714712	Explosive initiation system A detonation system especially useful for initiating a plurality of substantially simultaneous seismic detonations includes an electric trunkline circuit disposed on the surface of a firing site containing boreholes, within which booster charges having re...	02/03/1998
5388521	Method of reducing ground vibration from delay blasting A formation is blasted with one or more arrays of elongated, chemical, explosive charges so as to produce relatively low levels of ground vibration. The orientation and velocity of propagation of explosion in each charge and the velocity of propagation of...	02/14/1995
5386778	Process for visualization of a blast wave A process for visualization of a blast wave, which is the shock wave resulting from an explosive charge, is practiced by observing disturbance contours on a liquid-air cloud and interpreting resulting graphical and calculated data to evaluate matters rela...	02/07/1995
5375524	Blasting connector system and method of use A Blasting Connector System (10) for use in a conventional blasting environment, wherein the system comprises a plurality of structurally similar and compatible components which include a Cap Connector (20), a Male Jumper (30), a Female Jumper (40), a Ser...	12/27/1994
5253585	Explosive pipe crimping method and devices A main charge of explosive is positioned symmetrically about a passageway-forming tubular member, such as a well pipe assembly. The charge is outwardly and radially spaced from the member and is coupled thereto by a dense medium, such as soil, which is ad...	10/19/1993
5159149	Electronic device An electronic detonator system 10 comprises a remote RF transmitter 11 and a transportable housing 12 comprising means 13 for charging energy storage means in the detonator 15 and means 14 for programming delay time means in the detonator. The programming...	10/27/1992
4976199	Blasting system and its method of control A blasting system wherein the actuation of detonators at a plurality of blast holes is controlled by firing one or more test blasts and, at each blast hole, monitoring the resulting shock wave to derive data which is used to determine time delay criteria ...	12/11/1990
4966416	Fragmentation of an underground ore body The invention provides a process for converting subterraneous ore overlain by an adjacent formation of porous rock into an enclosed zone of fragmented ore by first blasting a void space in the porous rock and secondly explosively expanding the ore into th...	10/30/1990
4793258	Time fuze for unpredictably-detonating scatter ammunition A time fuze or detonating device for unpredictably-detonating scatter ammunition, which is activatable through the intermediary of an electrical trigger signal. The time fuze or triggering device is equipped with a cyclical counter which, in dependence up...	12/27/1988
4406226	Non-electric delay blasting method A non-electric delay blasting method is provided which comprises the use of single trunk line of detonating cord having a series of detonating relays, all of the same delay period, connected at spaced intervals along its length. Branch lines of detonating...	09/27/1983
4349227	Mining system for in situ oil shale retorts A subterranean formation containing oil shale is prepared for in situ retorting by initially excavating a lower level drift adjacent a lower portion of an in situ oil shale retort site and excavating an air level void above the retort site. An undercut is...	09/14/1982
4290649	Method for explosively expanding a pillar for forming an in situ oil shale retort An in situ oil shale retort is formed in a subterranean formation containing oil shale, a horizontally extending void is excavated within the boundaries of the retort site leaving a zone of unfragmented formation above and/or below such a void, at least o...	09/22/1981
4281877	Rock bolting techniques for forming an in situ oil shale retort A subterranean formation containing oil shale is prepared for in situ retorting by forming a fragmented permeable mass of formation particles containing oil shale in an in situ oil shale retort site. Formation is initially excavated from the retort site f...	08/04/1981
4273050	Placement method for Q.D. charges using minimum diving time An apparatus for the simultaneous placement of a plurality of objects on a substantially horizontal surface is disclosed, said apparatus comprising a platform to position the objects, release mechanisms to releasably attach the objects to the platform and...	06/16/1981
4146272	Explosive placement for explosive expansion toward spaced apart voids A subterranean formation containing oil shale is prepared for in situ retorting by initially excavating a pair of spaced apart voids, leaving an intervening zone of unfragmented formation between the voids. The intervening zone has substantially parallel ...	03/27/1979
4037538	Device for firing an electric detonator A device for firing an electric detonator which comprises a pressure deformable sealed waterproof housing containing an electric energy source of ignition of a detonator and means responsive to the deformation of the housing for actuating the energy sourc...	07/26/1977
3972285	Object array placement device An apparatus for the simultaneous placement of a plurality of objects on a substantially horizontal surface is disclosed, said apparatus comprising a platform to position the objects, release mechanisms to releasably attach the objects to the platform and...	08/03/1976

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Class 102/311 - Patterned blasting