| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 454168000 | MINE | 17 |
| 20100105308 | Optimized Mine Ventilation System - The optimized mine ventilation system of this invention supplements mine ventilation basic control systems composed of PLCs (Programmable Logic Controllers with human machine interfaces from vendors such as Allen-Bradley™, Modicon™ and others) or DCSs (Distributed Control System from vendors such as ABB™ and others) with supervisory control establishing a dynamic ventilation demand as a function of real-time tracking of machinery and/or personnel location and where this demand is optimally distributed in the work zones via the mine ventilation network and where the energy required to ventilate is minimized while totally satisfying the demand for each work zones. The optimized mine ventilation system operates on the basis of a predictive dynamic simulation model of the mine ventilation network along with emulated control equipment such as fans and air flow regulators. The model always reaches an air mass flow balance where the pressure and density is preferably compensated for depth and accounts for the natural ventilation pressure flows due to temperature differences. Model setpoints are checked for safety bounds and sent to real physical control equipment via the basic control system. | 04-29-2010 |
| 20100267324 | Airflow regulator - The invention provides an airflow regulator for a mine passage, comprising: a louver blade pivotable to a predetermined position, which is in a range from a closed position in which the louver blade restricts at least a portion of the passage to an open position in which air is readily able to flow in the passage; and a linkage mechanism for pivoting the louver blade wherein the linkage mechanism includes a biasing strut mechanism which is only activated to pivot the louver blade into the open position when a predetermined airflow is reached and biases the louver blade to its predetermined position after the airflow has reduced to less than the predetermined airflow. | 10-21-2010 |
| 20140094105 | Method And System For Fluid Flow Control In A Fluid Network System - A method of controlling fluid flow in a fluid network system by means of a plurality of fluid machines. The disclosure provides a simple empirical method of identifying network characteristics of the fluid network system used for providing the required fluid flow rate in the fluid network system utilizing minimal fluid machine power. The method includes the steps of determining a relation between a change in fluid machine speed and a corresponding change in fluid flow rate for each of the plurality of fluid machines empirically; determining a minimum total fluid machine power which provides a minimum required flow rate in the fluid network system based on a constraint involving the relation between the fluid flow rate and the corresponding fluid machine speed, and controlling a speed of the plurality of fluid machines such that the minimum total fluid machine power in the fluid network system is attained. | 04-03-2014 |
| 20140329453 | BLOWING CURTAIN FACE VENTILATION SYSTEM FOR EXTENDED CUT MINING USING PASSIVE REGULATOR - A ventilation system for an underground mine includes a blowing curtain, a passive regulator in a shape of an airfoil and an airflow ventilation source. The passive regulator is positioned in the air path adjacent a discharge end of the blowing curtain. | 11-06-2014 |
| 20150322787 | MINE VENTILATION SYSTEM AND METHOD - A mine ventilation structure including a support structure, a plurality of side panels and ceiling panels mounted on the support structure, and a cementitious sealing composition applied over at least one surface of the side or ceiling panels. A method of assembling an overcast in an intersection within a mine is also provided. | 11-12-2015 |
| 454169000 | With partition means (e.g., brattice, etc.) | 8 |
| 20080254733 | Airflow Regulator - A louvre-type airflow regulator ( | 10-16-2008 |
| 20140024304 | MINE VENTILATION DOOR WITH WINGS AND SLIDABLE OR POCKET PERSONNEL DOOR - A personnel access door assembly of an opposing wing of a mine ventilation door. The personnel access door includes a frame including a top portion, a bottom portion, a first post portion and a second post portion, the top frame portion and the bottom frame portion coupled to respective top and bottom ends of the first post and second post portions. The personnel access door further includes sets of trolley wheels affixed to the top or bottom of the frame to engage a top rail or bottom rail affixed on the opposing wing. | 01-23-2014 |
| 20140057544 | MINE STOPPING PANEL WITH END CAPS AND LOUVER CONNECTIONS - A mine stopping panel is disclosed. The panel includes first and second channel-shaped panel members having a telescoping sliding fit one inside the other. An elongate end cap fitted in the first panel member defines a cavity for receiving an end seal for sealing engagement with a mine surface. One or more louver connections between the first panel member and the end cap hold the end cap against movement relative to the first panel member when an extending force is applied to the end cap tending to telescopically extend the first panel member relative to the second panel member. | 02-27-2014 |
| 20140273791 | MINE AIRLOCK SYSTEM AND METHOD - The present disclosure is directed to systems and methods for facilitating the control of air through a mine passageway. In one example, there is provided a mine airlock. The mine airlock comprises a plurality of airlock doors. At least one of the airlock doors includes a frame including at least one door jamb and a lintel, a face leaf hingedly secured to the lintel, the face leaf having an upper section removably secured to a lower section; and a side leaf secured to the at least one door jamb. The face leaf forms a substantially airtight seal with the lintel and the side leaf in a closed position. | 09-18-2014 |
| 20150315911 | MINE VENTILATION STRUCTURE AND A DECK PANEL FOR SUCH A STRUCTURE - A mine ventilation structure is disclosed. The structure comprises a deck including a plurality of elongate sheet metal panels. Each panel is generally of inverted channel shape in transverse cross-section, having a top web and first and second sides extending down from the top web. The panels are connected by tongue-and-groove connections between adjacent sides of adjacent panels. A mine ventilation deck panel of desired construction is also disclosed. | 11-05-2015 |
| 454170000 | Flexible sheet | 3 |
| 20090197518 | MINE BARRIER SURVIVAL SYSTEM - A barrier survival system that isolates a safe volume within a mine or other confined structure and provides breathable air to one or more survivors within the safe volume who are awaiting rescue by generating oxygen, removing one or more toxins, carbon dioxide and carbon monoxide; and providing heat. | 08-06-2009 |
| 20100144264 | UNDERGROUND MINE VENTILATION CURTAIN OR BARRIER - A mine ventilation curtain ( | 06-10-2010 |
| 20150011147 | INFLATABLE VENTILATION LIFE CURTAIN - An inflatable ventilation curtain includes a curtain portion and an inflatable portion provided around a perimeter of the curtain portion. The inflatable portion includes an inner layer and an outer layer attached together, wherein the inner layer is provided immediately adjacent to the perimeter of the curtain portion and wherein the outer layer is provided around at least a part of an outer perimeter of the inner layer, thereby providing two distinct inflatable areas. | 01-08-2015 |
| 454171000 | Having inlet and outlet ductwork | 1 |
| 20120309283 | Underground Mine Ventilation System - This invention is a system for ventilating underground mines wherein each fan that ventilates a workplace or heading is installed behind a ventilation door in an access to a non-pressurised ventilation shaft (the intake vent shaft) and the air that returns from the workplaces and headings flows naturally to the surface. There are no surface ventilation fans and there is no separation of a primary and secondary ventilation circuit. | 12-06-2012 |
| 454172000 | Having inlet ductwork | 3 |
| 20140349562 | Change Over Station and Method - A change over station (COS) for persons in a hazardous environment includes a steel housing having only a single entrance door, a chamber, and an air lock portion. The COS includes a first elongate seat disposed in the chamber and a plurality of compressed air cylinders disposed in the seat. The COS includes plumbing connected to the air cylinders formed of gas lines and valves and an exhaust muffler including first, second and third air paths that provide air into the chamber. The third air path is door activated when the door is opened by a door activated switch. The COS includes a storage portion disposed in the housing having supplies, including water and SCSRs or SCBAs. A method for providing a protected environment to miners from a mine environment in a mine. | 11-27-2014 |
| 20160061033 | METHOD AND APPARATUS FOR PROVIDING CONTROLLED ATMOSPHERE IN MOBILE MINE REFUGES - A system, device and method for rapid delivery of clean air to occupants of a deployed mine refuge from a surface source after the refuge has been deployed and before the self-contained air has been consumed or before the temperature in the refuge has increased to hazardous levels in which a drilling rig is used to a borehole in close proximity to the mine refuge's underground location and a supply duct is lowered through the borehole to the underground mine near the refuge; upon hearing an alarm sounded by the system, a refuge occupant would exit the refuge, using existing personal breathing protection, to retrieve the duct and connect it to the mine refuge. | 03-03-2016 |
| 20160115790 | Hydraulic Gas Compressors and Applications Thereof - An compressor utilizing a flow of fluid down a vertical column to entrain air, or other gas, and compress it under the head of the flow. Compressed air is then separated from the flow in an air separation chamber at the bottom of the vertical column. In one application, the compressed gas is used to cool a deep underground mine. In another application, the system is used to separate chemical compounds from gaseous mixtures, such as the exhaust gases of fossil fuelled power plants. In a further application, the system is integrated into a domestic or commercial air conditioning system. The system can also be used as part of a minimum work vapour compression refrigerator. | 04-28-2016 |
