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2023
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Invention
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Pressurized liquid driven downhole drilling machine with a device for soft start from a flush pos... |
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2021
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Invention
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Drive device for rotatable operation of a drill bit of a down-the-hole hammer. The invention rela... |
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Invention
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A drive device for rotatable operation of a drill bit of a down-the-hole hammer. The invention re... |
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2017
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Invention
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Retainer means for a drill bit and a method for such retainer means. A retainer means for the con... |
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2016
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Invention
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Method and a system for optimising energy usage at a drilling arrangement. The present invention ... |
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Invention
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A method and a system for optimising energy usage at a drilling arrangement. The present inventio... |
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Invention
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Gyro-based surveying tool and method for surveying. The present disclosure relates to a gyro-base... |
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Invention
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Damping device for a fluid-driven down-the-hole drill and a fluid-driven down-the-hole drill comp... |
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2015
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Invention
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Indexing hydraulic dth rock drill by intermittent pressure. The present invention concerns a down... |
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Invention
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Down-the-hole drill with parallel flows for rotation motor and hammer.. The present invention con... |
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2014
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Invention
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Arrangement and down-the-hole drilling equipment for angular setting of a drill string. An arrang... |
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Invention
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Arrangement and down-the-hole drilling equipment for angular setting of a drill string. The inven... |
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2013
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Invention
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Apparatus for drilling and lining a borehole. The invention concerns an arrangement at a drill fo... |
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2012
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Invention
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Method and arrangement to establish during down-the-hole drilling communication between the cavit... |
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2010
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Invention
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Arrangement for a down-the-hole hammer drill for use in soil consolidation through jet grouting. ... |
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2009
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Invention
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Drill bit for a down-the-hole drill. The invention concerns a drill bit, intended to be used with... |
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2003
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P/S
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drilling machines and equipment, namely machines and equipment for drilling earth; machines and e... |
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Invention
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Method and device for directional down-hole drilling. The invention concerns a method and a devic... |
