| Patents for E21C 37 - Other methods or devices for dislodging with or without loading (1,249) |
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| 10/18/2001 | CA2628887A1 Apparatus for assembling a liner |
| 10/03/2001 | CN1072353C Apparatus for breaking hard material |
| 10/03/2001 | CN1072302C Digging method and system for controlled fragmentation and removing of material |
| 09/25/2001 | US6293355 Method of controlling rock drilling |
| 09/07/2001 | WO2001065199A1 Cartridge shell and cartridge for blast holes and method of use |
| 09/04/2001 | US6283844 Tool component |
| 09/04/2001 | US6283555 Plasma blasting with coaxial electrodes |
| 08/28/2001 | US6279477 Destroying apparatus and method, and holding member for use in that method |
| 07/04/2001 | EP0796384B1 Drilling process and device |
| 05/30/2001 | EP0927297B1 Blasting device |
| 05/09/2001 | CN2429630Y Drawing expansion bar |
| 04/18/2001 | CN1064658C Non-gunpowder blasting composition |
| 04/13/2001 | CA2323256A1 Breaking or splitting or fracturing of rock |
| 02/22/2001 | DE19939000A1 Hydraulic hammer drill has a deflection unit with a twisting flow channel at the hydraulic pressure inflow or the return line to reduce pressure swings and/or pressure bursts |
| 02/15/2001 | WO2001011308A1 Three dimensional multi-phase tunneling method and equipments thereof |
| 02/15/2001 | CA2381231A1 Three dimensional multi-phase tunneling method and equipments thereof |
| 01/18/2001 | WO2001004565A1 Blast hole plug |
| 01/03/2001 | CN1060248C Method for excavating a working face |
| 12/27/2000 | EP1062406A1 Process and device for splitting stones |
| 12/26/2000 | US6164388 Electropulse method of holes boring and boring machine |
| 12/07/2000 | CA2310883A1 Method and apparatus for fracturing brittle materials by thermal stressing |
| 11/29/2000 | EP1055489A2 Process for determing the operational life and state of a hydraulic impact assembly |
| 11/29/2000 | CN2408238Y Anti-explosion stemming machine for mine |
| 11/23/2000 | DE19923680A1 Verfahren zur Ermittlung der Betriebsdauer und des Einsatz-Zustands eines hydraulischen Schlagaggregats, insbesondere Hydraulikhammer, sowie Vorrichtung zur Durchführung des Verfahrens Method for determining the operating time and the use of state of a hydraulic percussion device, in particular hydraulic hammer, and device for carrying out the method |
| 11/22/2000 | EP1053386A1 Feed apparatus for feeding capsular cartridges into drilled hole |
| 11/21/2000 | US6148730 Method and apparatus for controlled small-charge blasting by pressurization of the bottom of a drill hole |
| 11/14/2000 | US6145934 Discharge destroying method, discharge destroying device and method of manufacturing the same |
| 11/14/2000 | US6145933 Method for removing hard rock and concrete by the combination use of impact hammers and small charge blasting |
| 11/01/2000 | CN2403895Y Injection air-control mine charging machine |
| 10/26/2000 | DE19917946A1 Ignition method for explosive material using fluid jet cutting is based on determination of which thermodynamic, kinematic and dynamic conditions lead to ignition |
| 10/18/2000 | CN1057583C Method for crushing overhead coal |
| 10/11/2000 | CN1269735A Breaking apparatus |
| 09/26/2000 | US6123394 Hydraulic fracturing of ore bodies |
| 09/19/2000 | CA2153292C Method for excavating a working face |
| 09/14/2000 | WO2000054003A1 Small charge blasting apparatus including device for sealing pressurized fluids in holes |
| 09/14/2000 | WO2000054002A1 A method and apparatus for pressure wave suppression in small-charge blasting |
| 09/14/2000 | WO2000054001A1 A method and apparatus for fly rock control in small charge blasting |
| 09/14/2000 | WO2000054000A1 Slide assembly having retractable gas-generator apparatus |
| 09/14/2000 | CA2365680A1 Small charge blasting apparatus including device for sealing pressurized fluids in holes |
| 09/14/2000 | CA2365678A1 A method and apparatus for pressure wave suppression in small-charge blasting |
| 09/14/2000 | CA2365675A1 A method and apparatus for fly rock control in small charge blasting |
| 09/14/2000 | CA2365671A1 Slide assembly having retractable gas-generator apparatus |
| 09/06/2000 | EP1033797A2 Pulse power system |
| 09/06/2000 | EP1033551A2 Electro-power impact cell for plasma blasting |
| 08/23/2000 | EP1029151A1 Method and device for crushing rock |
| 08/23/2000 | CN1055738C Method for automation of coal mining at declined gallery |
| 08/15/2000 | US6102484 Controlled foam injection method and means for fragmentation of hard compact rock and concrete |
| 08/09/2000 | EP0850349A4 Method, apparatus and cartridge for non-explosive rock fragmentation |
| 06/21/2000 | EP1010466A1 Breaking apparatus |
| 06/21/2000 | EP1009912A1 Method of controlling rock drilling |
| 05/25/2000 | DE19852583A1 Mobile Vorrichtung zum Zerkleinern von Steinen o. dgl. Mobile device for crushing stones o. The like. |
| 05/25/2000 | DE19849953C1 Raw material is blasted from a stratum, e.g. for open-cast mining of limestone, by placing compressible material at the blasting hole bottom to attenuate wave propagation transverse to the blasting direction |
| 05/17/2000 | EP1001093A1 Mobile apparatus for crushing stones or the like |
| 05/03/2000 | EP0811105B1 Plasma blasting probe assembly |
| 04/19/2000 | EP0824625B1 Method and apparatus for blasting hard rock |
| 04/19/2000 | CN1251165A Breakdown Device |
| 03/14/2000 | US6035784 Method and apparatus for controlled small-charge blasting of hard rock and concrete by explosive pressurization of the bottom of a drill hole |
| 03/08/2000 | EP0843774A4 Method for controlled fragmentation of hard rock and concrete by the combination use of impact hammers and small charge blasting |
| 01/20/2000 | WO2000003120A1 Power element |
| 01/05/2000 | EP0969263A1 Breakdown device |
| 12/14/1999 | US6000479 Slimhole drill system |
| 12/07/1999 | US5996708 Percussion tool |
| 12/01/1999 | EP0740737A4 Method and apparatus for plasma blasting |
| 11/16/1999 | US5984027 Engine-driven breaker |
| 10/12/1999 | US5964303 Process and a device for establishing drilling holes |
| 09/22/1999 | CN1229453A Blasting device |
| 08/04/1999 | EP0753096A4 Controlled fragmentation of hard rock by pressurization of the bottom of a drill hole |
| 07/29/1999 | WO1999037878A1 Slimhole drill system |
| 07/22/1999 | WO1999036674A1 Feed apparatus for feeding capsular cartridges into drilled hole |
| 07/22/1999 | WO1999036669A1 Process and device for splitting stones |
| 07/21/1999 | CN2329764Y Coal-face flooding hole sealing device |
| 07/14/1999 | CN1222949A Destroying apparatus and method, and holding member for use in that method |
| 07/07/1999 | EP0927297A1 Blasting device |
| 06/30/1999 | CN1043918C Hydraulic mining excavator |
| 06/09/1999 | EP0921270A1 Underground augering machine by electrical crushing, excavator, and its excavating method |
| 05/20/1999 | WO1999024694A1 Method and device for crushing rock, manipulator to be used in such a device, assembly of a housing and a wire conductor placed therein, and assembly of a housing and a means placed therein |
| 05/19/1999 | EP0916786A1 Destroying apparatus and method, and holding member for use in that method |
| 05/14/1999 | WO1999022900A1 Apparatus and method for breaking solid insulator with electric pulse |
| 04/27/1999 | US5896938 Portable electrohydraulic mining drill |
| 03/24/1999 | CN2311750Y Explosive jet-flow cutter for stone crude material exploitation |
| 03/18/1999 | WO1999012648A1 Breaking apparatus |
| 03/10/1999 | EP0900635A2 Tool guiding on a pnematic driven percussion device |
| 03/05/1999 | CA2212094A1 Hydraulic hand-held scaling bar |
| 02/24/1999 | CN1208810A Equipment for blasting rock type materials |
| 02/18/1999 | DE19728727C1 Schlag- und/oder Bohrhammer mit Leerlaufkupplung Impact and / or hammer drill with one-way clutch |
| 02/13/1999 | CA2212993A1 Method and apparatus for fracturing rock or similar material |
| 01/19/1999 | US5860481 Fluid-operated striker assembly with automatic stroke length variation |
| 01/14/1999 | WO1999001260A1 Paving breaker and/or hammer drill with a neutral gear clutch mechanism |
| 01/07/1999 | EP0888851A2 Drilling - and/or percussion apparatus |
| 12/23/1998 | EP0885703A1 Discharge hydraulic pressure destroying method |
| 12/17/1998 | WO1998057034A1 Method of controlling rock drilling |
| 12/15/1998 | CA2146940C Underground hydraulic mining method and apparatus |
| 12/08/1998 | US5845854 Method of solid insulator destruction |
| 12/03/1998 | WO1998054425A1 Destroying apparatus and method, and holding member for use in that method |
| 11/11/1998 | CN1198812A Method and apparatus for controlled small-charge blasting of hard rock and concrete by explosive pressurization of the bottom of a drill hole |
| 11/11/1998 | CN1198794A Method for controlled fragmentation of hard rock and concrete by the combination use of impact hammers and small charge blasting |
| 10/21/1998 | EP0872317A1 Discharge destroying method, discharge destroying device and method of manufacturing the same |
| 10/01/1998 | WO1998043039A1 Breakdown device |
| 09/08/1998 | US5803551 Method apparatus and cartridge for non-explosive rock fragmentation |
| 09/08/1998 | US5803550 Method for controlled fragmentation of hard rock and concrete by the combination use of impact hammers and small charge blasting |