Class / Patent application number | Description | Number of patent applications / Date published |
299012000 | Mine safety | 10 |
20090134692 | METHOD AND APPARATUS FOR MONITORING GATEROAD STRUCTURAL CHANGE - A method and apparatus is provided for determining structural change in a mining operation. A first scan of gateroad surfaces is obtained and information of the scan profile is stored. At a later time a second scan of the gateroad surfaces is then obtained. Information of the scans can be registered and any difference noted. If the difference exceeds a threshold a warning can be provided indicating a gateroad structural change that may be hazardous. The scans can be made from a single sensor, or from multiple sensors ( | 05-28-2009 |
20120019045 | WATER SPRAY SYSTEM FOR CONTINUOUS MINER AND METHOD OF USE - A continuous miner has a number of specially located water sprays to form a curtain of water spray across at least a portion of the miner width and behind the cutting assembly of the miner to suppress dust that would otherwise be directed to the operator of the miner and cause the miner operation to be out of compliance with safety regulations. | 01-26-2012 |
20120119562 | MINE SAFETY SYSTEM - A mine safety system having at least a substantial portion of a mine conduit buried within a trench that is formed in the mine floor is provided. The mine safety system can be sturdy and durable in construction and in operation because a substantial pressure from a mine collapse is transferred to the surrounding earth or soil when the mine conduit is partially or fully buried in the mine floor. The mine safety system can be simply and inexpensively installed in newly constructed mines or retrofitted in existing mines. The mine conduit can be made of a lightweight plastic which can make handling of the conduit easier. Moreover, installation of the trench and the mine safety system is quicker and easier with use of a cutter drum that can form a curved trench bottom when the conduit is circular. | 05-17-2012 |
20130049436 | Refuge Chamber and Method - A refuge chamber for miners in a mine includes a skid. The chamber includes a tent that is disposed in the skid in an undeployed state which is expandable to a deployed state and extends from the skid to provide a protected atmosphere for the miners. A method for providing a refuge chamber for miners in a mine including the steps of opening a skid made of metal. There is the step of expanding a tent that is disposed in the skid in an undeployed state to a deployed state that extends from the skid to provide a protected atmosphere for the miners. | 02-28-2013 |
20140265523 | AERATED ROCK DUST - This technology relates to a method of forming an aerated material for application to the surfaces of mines to minimize dust formation. The aerated material is comprised of rock dust and a foaming agent which is mixed with water, and when properly mixed and applied to a mine surface, creates a dry cellular structure with little caking. | 09-18-2014 |
20140300174 | Refuge Shelter, Coupler and Method - A refuge shelter includes a container. The shelter includes a tent that is disposed in the container in an undeployed state. The tent includes an inflatable support structure which is inflatable from an undeployed state in the container to a deployed state, and a seal which seals the tent to the container in a deployed state. The support structure has a plurality of hoses interconnected by couplers. The hoses have an inside diameter of less than 5 inches. A gas flow apparatus. A refuge shelter for miners in a mine includes a container and a tent that is disposed in the container. The tent has a test support to which a sample of the external environment can be obtained from inside the tent when the tent is deployed. A method for providing a refuge chamber for miners in a mine. | 10-09-2014 |
20140319896 | DEVICE FOR ANCHORING A FALL RESTRAINT POST IN A SUPPORT STRUCTURE - The present invention concerns a device ( | 10-30-2014 |
20150115690 | PROCESS FOR APPLYING ROCK DUST TO A MINE WALL - Rock dust is applied to a coal mine wall for mine fire suppression in combination with a chemical foam containing a saturated fatty acid, preferably stearic acid, which imparts hydrophobic properties to the rock dust particles, avoiding agglomeration. The rock dust and foam containing a saturated fatty acid are combined by causing the rock dust and foam to flow through separate conduits to a combiner from which the resulting mixture is caused to flow through a nozzle for application to the mine wall. | 04-30-2015 |
20160186565 | METHOD FOR COOLING A REFUGE CHAMBER IN AN EMERGENCY SITUATION - A method for cooling a refuge chamber ( | 06-30-2016 |
20190145259 | METHOD FOR STEPWISE CONSTRUCTION OF PREFERENTIAL GAS MIGRATION PATHWAY AT STOPE IN COAL SEAM | 05-16-2019 |