| Patents for E21C 37 - Other methods or devices for dislodging with or without loading (1,249) |
|---|
| 07/13/2006 | US20060152066 Crushing structure of crusher |
| 06/27/2006 | CA2187750C Controlled fragmentation of hard rock by pressurization of the bottom of a drill hole |
| 06/06/2006 | CA2495143C Thermal rock fragmentation application in narrow vein extraction |
| 05/30/2006 | US7052092 Drillhole blasting |
| 05/30/2006 | CA2180312C Tool component |
| 05/26/2006 | WO2006054079A1 System and method for drilling a borehole |
| 05/18/2006 | US20060105695 Anchored mine ventilation structure |
| 05/17/2006 | EP1657521A1 Expanding system using plasma discharge |
| 05/11/2006 | WO2006049544A1 Boom arrangement for a scaling device and scaling device |
| 05/11/2006 | US20060096487 Element for initiating propellant |
| 05/11/2006 | CA2584056A1 Boom arrangement for a scaling device and scaling device |
| 04/25/2006 | US7032978 Crushing method using large boreholes in underwater rock |
| 04/20/2006 | DE202005008394U1 Pneumatic snap link fitting for hand-held tool e.g. spade terminates in a conical tip |
| 04/20/2006 | DE202005008392U1 Pneumatically operated spade has a compressed air supply through a tube separated from spade blade by motion dampening mechanism |
| 03/21/2006 | US7014271 Apparatus for detecting the state of rotation of cutting rollers of a shield tunneling machine |
| 03/15/2006 | EP1336074B1 Drillhole blasting |
| 03/02/2006 | WO2006023998A2 Pulsed electric rock drilling, fracturing, and crushing methods and apparatus |
| 03/02/2006 | CA2821140A1 Pulsed electric rock drilling, fracturing, and crushing methods and apparatus |
| 03/02/2006 | CA2581701A1 Pulsed electric rock drilling, fracturing, and crushing methods and apparatus |
| 02/23/2006 | US20060038437 Electrohydraulic boulder breaker |
| 02/01/2006 | CN1727639A Mining and driving method combined splitter with hydraulic breaking hammer |
| 02/01/2006 | CN1727637A Rock splitter in use for non-blasting mining and tunnecting |
| 01/24/2006 | US6988775 Scrapping method of building and scrapping machine |
| 01/18/2006 | CN2752439Y Power-assisted coal petrography drilling machine |
| 01/17/2006 | US6986552 Hardened rotary cutting tip |
| 01/04/2006 | CN2750041Y Electric coal winning machine |
| 01/04/2006 | CN1717533A Thermal rock fragmentation application in narrow vein extraction |
| 11/30/2005 | EP1281039A4 Cartridge shell and cartridge for blast holes and method of use |
| 11/08/2005 | US6962395 Non-rotatable protective member, cutting tool using the protective member, and cutting tool assembly using the protective member |
| 11/03/2005 | US20050242654 Continuous extraction of underground narrow-vein metal-bearing deposits by thermal rock fragmentation |
| 11/03/2005 | DE19852583B4 Mobile Vorrichtung zum Zerkleinern von Steinen o. dgl. Mobile device for crushing stones o. The like. |
| 10/26/2005 | EP1461511B1 Element for initiating propellant |
| 10/13/2005 | WO2005095758A1 Discharge crushing method for crushing object to be crushed, method of excavating horizontal tunnel using discharge crushing method, and method of excavating vertical shaft |
| 10/12/2005 | CN1681597A Crushing structure of crusher |
| 09/27/2005 | US6948573 Rock breaker tool |
| 09/22/2005 | US20050206216 Drum turning mechanism for continuous miners and longwall shearers |
| 09/21/2005 | CN2727399Y Hydraulic control mechanism of hand-held mining rig |
| 09/08/2005 | US20050194832 Crushing method using large boreholes in underwater rock |
| 09/07/2005 | CN1664248A Crushing method using large boreholes in underwater rock |
| 08/30/2005 | US6935702 Crushing apparatus electrode and crushing apparatus |
| 08/11/2005 | US20050173966 Non-rotatable protective member, cutting tool using the protective member, and cutting tool assembly using the protective member |
| 07/27/2005 | EP1427911B1 Method for automatic generation of a drill pattern |
| 07/06/2005 | EP1550507A1 Crushing structure of crusher |
| 07/05/2005 | US6913320 Thermal rock fragmentation application in narrow vein extraction |
| 06/29/2005 | EP0969263B1 Breakdown device |
| 06/28/2005 | US6912356 Method and apparatus for fracturing brittle materials by thermal stressing |
| 06/23/2005 | US20050134103 Method of and apparatus for breaking rock |
| 06/16/2005 | WO2005054628A1 Boring machine having differential global positioning system receiver for underwater rock and boring method thereof |
| 06/09/2005 | US20050121230 Boring machine having differential global positioning system receiver for underwater rock and boring method thereof |
| 06/08/2005 | CN1624290A Boring machine having differential global positioning system receiver for underwater rock and boring method thereof |
| 06/07/2005 | US6901621 Scaling bar |
| 05/24/2005 | CA2138052C Breaking up of rock and the like |
| 05/18/2005 | CN2700560Y Hand-held hydraulic drilling rig for mining |
| 05/11/2005 | CN1614194A Drilling machine for actuating liquid and breaking rock by explosive explosion high-pressure gas |
| 04/28/2005 | WO2005038147A2 Scaling assembly |
| 04/28/2005 | US20050088033 Rock breaker tool |
| 04/14/2005 | WO2005033474A1 Blasting method and blasting accessory |
| 04/14/2005 | US20050077777 Scaling assembly |
| 04/14/2005 | CA2541346A1 Blasting method and blasting accessory |
| 03/29/2005 | CA2392798C Percussive striking electric tool device |
| 02/01/2005 | US6848748 Mining system with drilling, loading, conveyor, and support |
| 01/20/2005 | US20050012381 Thermal rock fragmentation application in narrow vein extraction |
| 01/18/2005 | CA2180661C Method and apparatus for plasma blasting |
| 01/13/2005 | US20050010385 Blasting method |
| 01/11/2005 | CA2120059C Apparatus and process for bonding wear pieces to the useful extremities of heavy construction vehicles |
| 12/29/2004 | WO2004113822A1 Method for carrying out drilling-and-blasting works in watered lands |
| 12/02/2004 | US20040237826 Protection of blast holes |
| 10/26/2004 | CA2104940C Portable mechanized mine scaling tool |
| 10/06/2004 | EP1463918A1 Method of and apparatus for breaking rock |
| 10/06/2004 | EP1463871A1 Activated stemming device |
| 09/29/2004 | EP1461511A1 Element for initiating propellant |
| 08/03/2004 | US6772105 Blasting method |
| 07/27/2004 | CA2343862C Blasting mat assembly |
| 07/13/2004 | US6761416 Method and apparatus for a plasma-hydraulic continuous excavation system |
| 07/06/2004 | US6758288 Rotary-percussion electrical tool |
| 06/23/2004 | EP1053386B1 Feed apparatus for feeding capsular cartridges into drilled hole |
| 06/16/2004 | EP1427911A1 Method for automatic generation of a drill pattern |
| 06/10/2004 | WO2004048753A1 Thermal rock fragmentation application in narrow vein extraction |
| 06/03/2004 | US20040104216 Method and apparatus for fracturing brittle materials by thermal stressing |
| 05/27/2004 | WO2003060290B1 Activated stemming device |
| 05/27/2004 | US20040100140 Thermal rock fragmentation application in narrow vein extraction |
| 05/27/2004 | US20040099445 Drillhole blasting |
| 05/26/2004 | CA2412792A1 Thermal rock fragmentation application in narrow vein extraction |
| 05/18/2004 | US6737981 Apparatus for converting measurement signals into digital signals, the signals having been initiated in a piezo sensor by the impacts of a hydraulic percussion device |
| 05/06/2004 | WO2003057996A3 Method and apparatus for a plasma-hydraulic continuous excavation system |
| 04/22/2004 | CA2409464A1 Device for breaking rocks and the like without explosives |
| 03/25/2004 | WO2004024332A1 Crushing structure of crusher |
| 03/23/2004 | US6708619 Cartridge shell and cartridge for blast holes and method of use |
| 02/26/2004 | DE19923680B4 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 |
| 02/19/2004 | WO2004015243A1 Device for breaking boulders |
| 02/18/2004 | CN2603849Y Emulsion hydraulic drill for coal measures |
| 02/12/2004 | US20040026983 Monolithic point-attack bit |
| 02/12/2004 | US20040026548 Crushing apparatus electrode and crushing apparatus |
| 02/11/2004 | CN2603200Y Multi-position drilling machine for mine |
| 02/11/2004 | CN1474930A Drillhole blasting |
| 01/29/2004 | WO2004009958A1 Apparatus and method for collecting underground hydrocarbon gas resources |
| 01/22/2004 | US20040012005 Scaling bar |
| 01/15/2004 | US20040007911 Apparatus and method for fracturing a hard material |
| 01/07/2004 | CN2597666Y Hand-held electric coal cutting machine |
| 01/06/2004 | US6672674 Longwall mining with blasting |