Patents
Sitemap › F42 - Ammunition; Blasting › F42D - Blasting › F42D 1 - Blasting methods or apparatus, e.g. for loading or tamping
Patents for F42D 1 - Blasting methods or apparatus, e.g. for loading or tamping (4,148)
04/1992
04/21/1992US5105743 Method and device for introduction of explosives into drill holes
04/21/1992CA1299017C Detonator
04/15/1992EP0415913B1 Improvements in or relating to explosives
04/15/1992CN1060354A Timing apparatus
04/15/1992CN1060353A Explosive zoning for rock mass and zoning method
04/08/1992CN1060148A Mining electronic millisecond ignitor
04/02/1992WO1991017970A3 Low level blasting composition and method of blasting same
04/01/1992CN2100598U Deep-hole pneumatic charge device
03/1992
03/31/1992US5099763 Method of blasting
03/24/1992US5098163 Controlled fracture method and apparatus for breaking hard compact rock and concrete materials
03/03/1992US5092245 Explosive stemming device
03/03/1992US5092237 System using an electropyrotechnic device intended to trigger the operation of a gas generator
02/1992
02/26/1992EP0471694A1 A method and apparatus for charging waterlogged boreholes with explosives material
02/25/1992US5090321 Detonator actuator
02/20/1992WO1992002709A1 Controlled fracture method and apparatus for breaking hard compact rock and concrete materials
02/19/1992EP0471622A1 Transfer apparatus adapted for transferring an explosive train through an externally pressurized secondary explosive bulkhead
02/18/1992US5088411 Apparatus for igniting detonating primer with the aid of electromagnetic wave
02/18/1992CA1295884C Method of electrically blasting detonator and cordless detonator for use in said method
02/11/1992US5086702 Modular blasting system
01/1992
01/29/1992EP0468838A1 Ignition system for a pyrotechnical composition
01/11/1992CA2046541A1 Methods and apparatus for disarming and arming explosive detonators
01/09/1992WO1992000498A1 Piezoelectrical igniter
12/1991
12/17/1991CA1293202C Fuse tube with reinforcing element
12/16/1991CA2044559A1 Method and apparatus for selectively activating well tools from the surface
12/10/1991US5071496 Sensitive semifluid expolsve activated by a detonator for use in bore holes having pressure resistant closures
12/10/1991US5070789 Electric exploding bridge wire initiators
12/10/1991US5070788 Methods and apparatus for disarming and arming explosive detonators
12/04/1991EP0459883A2 Apparatus for arming, testing and sequentially firing a plurality of perforators
12/03/1991US5069129 Igniting apparatus for explosive substances
12/03/1991US5069108 Blasting device for unblocking mine raises
11/1991
11/28/1991WO1991017970A2 Low level blasting composition and method of blasting same
11/27/1991EP0458178A2 Autonomous acoustic detonation device
11/22/1991CA2041743A1 Autonomous acoustic detonation device
11/17/1991CA2042671A1 Low level blasting composition and method of blasting same
11/05/1991US5062485 Variable time delay firing head
10/1991
10/29/1991US5060573 Detonator assembly
10/16/1991EP0250582B1 Non-electric blasting initiation signal control system, method and transmission device therefor
10/13/1991CA2040230A1 Modular blasting system
10/02/1991CN1055094A Method and apparatus for calibrated electronic timing circuit
10/01/1991US5052489 Apparatus for selectively actuating well tools
09/1991
09/24/1991US5050503 Selectively aimable warhead initiation system
09/10/1991US5046567 Adiabatically induced ignition of combustible materials
09/10/1991US5046425 Layers
09/04/1991CN2084052U Step type fuze connector
09/03/1991CA1288503C Method of electrically blasting a plurality of detonators and electric blasting apparatus for use in said method
08/1991
08/28/1991EP0443221A1 Method and apparatus for a calibrated electronic timing circuit
08/28/1991CN1054132A Delay train ignition buffer
08/27/1991US5042594 Apparatus for arming, testing, and sequentially firing a plurality of perforation apparatus
08/22/1991WO1991012485A1 Method of reducing the overloading of a borehole and explosive composition used therefor
08/21/1991EP0442814A2 Safe arm system for a perforating apparatus having a transport mode, an electric contact mode and an armed mode
08/19/1991CA2010376A1 Method and apparatus for a calibration electronic timing circuit
08/13/1991US5038682 Electronic device
08/07/1991CN2082395U Emulsification explosive pouring machines
07/1991
07/30/1991US5035286 Methods and apparatus for field blasting of earth formations using inflatable devices for suspending explosives in boreholes
07/30/1991CA1286914C Primer assembly
07/17/1991EP0436548A1 System for bracing an explosive charge in a borehole
07/16/1991US5031538 Delay train ignition buffer
07/03/1991EP0434883A1 Electronic detonators-exploder system for high-reliable stepped detonation
07/02/1991US5027708 Safe arm system for a perforating apparatus having a transport mode an electric contact mode and an armed mode
06/1991
06/18/1991US5024158 Detonators containing two blsasting caps joined side-by-side for simultaneous ignitiion
06/12/1991CN1052186A Directional cutting explosion technology
06/11/1991US5023556 Sensor circuit response to different fluid conductivities and having time delay feature
06/11/1991US5022326 Asynchronous explosive logic safing device
06/11/1991CA1284768C Firing head for a tubing conveyed perforating gun
06/05/1991EP0429512A1 Safety switch for explosive well tools
06/04/1991US5020435 Elongate tubular detonator, propogating a gaseous percussion
05/1991
05/30/1991WO1991007637A1 Remote detonation of explosive charges
05/29/1991EP0429229A2 Igniting apparatus for explosive substances
05/16/1991CA2003166A1 Remote detonation of explosive charges
05/14/1991US5014622 Blasting system and components therefor
05/07/1991US5012741 Initiator for a transmission tube
04/1991
04/23/1991US5009163 Non-electric signal transmission device connection, method and apparatus therefor
04/23/1991US5009162 Explosive logic resolver network
04/16/1991US5007661 Safety apparatus
04/16/1991US5007345 Method and apparatus for charging waterlogged boreholes with explosives
04/16/1991US5007344 Dual firing system for a perforating gun
04/04/1991WO1991004455A1 Method for making cavities in hard ground
04/03/1991EP0420673A2 Timing apparatus
03/1991
03/26/1991US5001981 Signal transmission tube for initiation of explosives
03/26/1991CA1282047C System for supplying blasting media to a media blasting system
03/19/1991US5000261 Inflatable devices for suspending explosives in boreholes
03/19/1991CA1281635C High temperature high pressure detonator
03/13/1991EP0415913A1 Improvements in or relating to explosives.
03/12/1991US4998963 Explosive logic clock
03/12/1991US4998478 Connection device for blasting signal transmission tubing
03/12/1991US4998477 Detonation transfer apparatus for initiating detonation of an insensitive detonating cord utilizing an initiating compound, flyer and shock reflector
03/12/1991CA1281233C Method and means for connecting fuses
02/1991
02/27/1991CN1049557A Blasting device with safe dust removing and low cost features
02/21/1991WO1991002212A1 System for bracing an explosive charge in a borehole
02/21/1991DE3703791C1 Multiple blasting charge ignition system - has explosive transfer channel and directional initiating channels
02/05/1991US4989516 Safe/arm explosive delay path
01/1991
01/22/1991US4986183 Method and apparatus for calibration of electronic delay detonation circuits
01/15/1991US4984519 Delay circuit for use in electric blasting system
01/09/1991EP0406337A1 Electronic device and mode of operation.
12/1990
12/27/1990EP0404644A1 Electropyrotechnic device for triggering the functioning of a gas generator
12/27/1990EP0403640A1 Method and apparatus for detonating explosives
12/20/1990CA2019304A1 Electropyrotechnical system device for the sequential firing of a bank of gas generators
12/12/1990CN2067394U Ring-threading induction initiating pellet
12/11/1990US4976199 Blasting system and its method of control
12/04/1990US4974514 Explosive safety junction
1 ... 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42