| Patents for F42D 1 - Blasting methods or apparatus, e.g. for loading or tamping (4,148) |
|---|
| 09/14/1988 | CN87210427U Exploder without dead bomb |
| 09/13/1988 | US4770097 Mining method with no delay between shot initiator and firing |
| 09/13/1988 | CA1241872A1 Acoustically detonated explosively releasable link |
| 08/30/1988 | US4768127 Ignition system |
| 08/23/1988 | US4765246 Detonator and a charge adapted thereto |
| 08/16/1988 | CA1240554A1 Borehole stemming with a column of liquefiable and/or vaporizable chunks of solid material |
| 08/09/1988 | US4762067 Downhole perforating method and apparatus using secondary explosive detonators |
| 08/02/1988 | US4760791 Electrical sequential firing system |
| 07/26/1988 | US4759291 Through bulkhead explosive initiator for oil well usage |
| 07/26/1988 | CA1239550A1 Method for charging flowable explosives into upwardly extending boreholes |
| 07/19/1988 | US4757764 Nonelectric blasting initiation signal control system, method and transmission device therefor |
| 07/13/1988 | EP0274241A2 Blasting material supply system |
| 07/13/1988 | EP0274231A1 Method of electrically blasting a plurality of detonators and electric blasting apparatus for use in said method |
| 07/05/1988 | US4754705 Mechanical stemming construction for blast holes and method of use |
| 07/05/1988 | US4754703 Method of electrically blasting detonator and cordless detonator for use in said method |
| 06/28/1988 | US4753170 Polygonal detonating cord and method of charge initiation |
| 06/15/1988 | EP0271233A1 Non-electric detonators without a percussion element |
| 05/31/1988 | US4747201 Boosterless perforating gun |
| 05/10/1988 | US4742773 Blasting signal transmission tube delay unit |
| 05/05/1988 | WO1988002470A3 Method for detonating an explosive charge |
| 04/13/1988 | EP0263800A2 Detonator for a non-electric detonation system for blasting charges |
| 04/12/1988 | US4736796 Tamp hole plug system and method |
| 04/12/1988 | CA1235059A1 Redundant detonation initiators for use in wells and method of use |
| 04/07/1988 | WO1988002470A2 Method for detonating an explosive charge |
| 03/30/1988 | EP0261886A2 Delay circuit for electric blasting, detonating primer having delay circuit and system for electrically blasting detonating primers |
| 03/23/1988 | CN85103708B Short line differantial detonate ignitor |
| 03/15/1988 | US4730560 Combination blasting signal transmission tube connector and delay assembly |
| 03/15/1988 | CA1234205A1 Electrical sequential firing system |
| 03/02/1988 | EP0257748A2 Method for the electrical sequential initiation of a series of detonators |
| 03/02/1988 | CN87207860U Static detonate tube for skew, transverse and underwater filling hole |
| 02/24/1988 | EP0256613A2 Ignition system |
| 02/16/1988 | US4725991 Method for controlling blasting operations |
| 02/02/1988 | US4722281 Intermittent explosion apparatus and method of using such apparatus |
| 02/02/1988 | US4722279 Non-electric detonators without a percussion element |
| 01/12/1988 | US4718345 Primer assembly |
| 01/12/1988 | CA1231420A1 Process and apparatus for chronologically staggered initiation of electronic explosive detonating devices |
| 01/07/1988 | EP0251824A1 The electrical sequential initiation of explosions |
| 01/05/1988 | US4716832 For use in a perforating gun assembly |
| 01/05/1988 | US4716831 Detonating cord connector |
| 12/22/1987 | US4714018 Method and means for connecting fuses |
| 12/15/1987 | US4712477 Electronic delay detonator |
| 11/12/1987 | DE3714161A1 Zuendschnur Fuse |
| 11/04/1987 | CN85102321A Comprehensive rock-breaking technique for rock tunnel engineering |
| 10/14/1987 | EP0241151A1 Blasting apparatus |
| 10/13/1987 | US4699060 Detonation arrestor device for bulk explosive materials transfer |
| 10/13/1987 | US4699059 Explosive shock tube having lateral initiation properties |
| 10/13/1987 | CA1228019A1 Charge holder |
| 10/07/1987 | EP0240375A1 Device for connecting a fuse to an igniter |
| 10/01/1987 | DE3610149A1 Charge system and method for introducing deck charges, which consist of a plurality of explosive cartridges, into a drilled hole |
| 09/30/1987 | EP0239254A2 Detonator |
| 09/01/1987 | US4690058 Smooth wall blasting in rock |
| 08/19/1987 | CN87102234A Blasting technique with indirect energy |
| 08/11/1987 | US4685396 Method and apparatus for safer remotely controlled firing of ignition elements |
| 08/11/1987 | US4685395 Controlled inductive coupling device |
| 08/11/1987 | US4685375 Slurry |
| 08/05/1987 | CN86207638U Pneumatic positive pressure charging device for blast hole |
| 08/04/1987 | US4683797 For destroying mines in an enemy mine field |
| 07/22/1987 | CN86209599U Punching bullet for rock |
| 07/14/1987 | CA1224139A1 Pressure responsive explosion initiator with time delay and method of use |
| 07/02/1987 | WO1987003954A1 Non-electric blasting initiation signal control system, method and transmission device therefor |
| 07/01/1987 | CN86108595A 爆破方法及爆破用袋 Blasting and blasting bags |
| 06/25/1987 | DE3546393C1 Device for securing stemming cartridges |
| 06/16/1987 | US4674047 Integrated detonator delay circuits and firing console |
| 06/16/1987 | US4672895 Device for controlling the priming of a pyrotechnic device |
| 06/09/1987 | US4671178 Low energy fuses |
| 06/04/1987 | WO1987003360A1 Blasting method and blasting bag |
| 05/26/1987 | US4667599 Explosive cutting device with simultaneous detonation of opposite ends |
| 05/13/1987 | CN86107202A 间歇爆炸装置 Intermittent explosive devices |
| 05/12/1987 | US4664033 Pyrotechnic/explosive initiator |
| 05/05/1987 | US4662451 Method of fracturing subsurface formations |
| 04/29/1987 | EP0219820A2 Intermittent explosion apparatus |
| 04/28/1987 | US4660644 Inflatable rubber blasting hole plug |
| 04/21/1987 | US4658900 High energy firing head for well perforating guns |
| 04/21/1987 | CA1220842A1 Apparatus for initiating explosions and method therefor |
| 04/14/1987 | US4657089 Method and apparatus for initiating subterranean well perforating gun firing from bottom to top |
| 04/14/1987 | US4656944 Select fire well perforator system and method of operation |
| 03/25/1987 | CN85105789A Method to cut marble and granite, device to concentrate energy in hole and cutter |
| 03/18/1987 | EP0214182A1 Acoustically detonated explosively releasable link |
| 03/10/1987 | US4648471 Control system for borehole tools |
| 03/10/1987 | US4648470 Firing head for a tubing conveyed perforating gun |
| 03/04/1987 | EP0212111A1 Electronic delay detonator |
| 03/03/1987 | US4646640 Process and apparatus for chronologically staggered initiation of electronic explosive detonating devices |
| 03/03/1987 | CA1218736A1 Method and apparatus for blasting electrically detonating primers |
| 02/25/1987 | EP0211515A2 Apparatus for severing a wellhead |
| 02/10/1987 | US4641580 Circuit apparatus for operating fireworks ignition |
| 02/04/1987 | CN86105631A Apparatus for severing a wellhead |
| 02/03/1987 | USH207 Over-under destructive crossover circuit |
| 02/03/1987 | US4640370 Perforating gun for initiation of shooting from bottom to top |
| 01/15/1987 | WO1987000265A1 Detonator actuator |
| 01/15/1987 | WO1987000264A1 Detonator |
| 01/14/1987 | EP0208480A2 Detonator actuator |
| 01/14/1987 | EP0208416A1 Interconnecting low energy fuses |
| 01/13/1987 | US4636715 Digital display ohmmeter |
| 01/13/1987 | US4635734 Boosterless perforating gun and method of assembly |
| 01/07/1987 | EP0207749A2 Detonator |
| 01/02/1987 | DE3544088C1 Stemming cartridge |
| 12/30/1986 | US4632034 Redundant detonation initiators for use in wells and method of use |
| 12/30/1986 | EP0206946A1 Device for arresting an explosion during the transfer of bulk explosives |
| 12/23/1986 | US4630522 Acoustically detonated explosively releasable link |
| 12/16/1986 | US4628819 Disintegrating tamper mass |