| Patents for E21F 1 - Ventilation of mines or tunnels; Distribution of ventilating currents (2,288) |
|---|
| 07/17/2013 | CN103206235A Low-concentration short-distance closed gas emission device |
| 07/16/2013 | US8485873 Steel anchored reinforced mine seal |
| 07/11/2013 | US20130178143 Air baffles in railroad tunnels for decreased airflow therein and improved ventilation and cooling of locomotives |
| 07/10/2013 | CN203050794U Multi-Agent coal mine tunnel air quantity information monitoring system |
| 07/10/2013 | CN203050757U Air door interlocking mechanism |
| 07/10/2013 | CN203050756U Universal quick dispersing device for tunnel gas |
| 07/10/2013 | CN103195461A Application condition and method for achieving saving and clean production by replacing roadway with pipeline for ventilation |
| 07/09/2013 | CA2800880A1 Air baffles in railroad tunnels for decreased airflow therein and improved ventilation and cooling of locomotives |
| 07/03/2013 | CN203035263U Underground ventilation monitoring system |
| 07/03/2013 | CN203035236U Air washer used for carbon dioxide gas cylinder room of refuge chamber |
| 07/03/2013 | CN203035221U Locking device between underground air doors |
| 07/03/2013 | CN203035220U Plastic-coated cloth thermal-insulation wind cylinder |
| 07/03/2013 | CN203035219U Air-washer |
| 07/03/2013 | CN102191935B Water vapor rotating jet dust settling device for comprehensive driving working face |
| 06/26/2013 | CN203025544U On-line monitoring device of mine fan |
| 06/26/2013 | CN203022791U Mine return air heat energy utilizing device based on original diffusion tower |
| 06/26/2013 | CN203022790U Reconstructed composite structure by utilizing existing underground building or structure |
| 06/26/2013 | CN102444606B Fan frequency conversion control system and method for air pressure dynamic balance of mine stope |
| 06/26/2013 | CN102392671B Manufacturing method of mine blow dryer |
| 06/25/2013 | US8469781 Mine barrier survival system |
| 06/20/2013 | WO2013089412A1 System for maintaining the temperature in an underground tunnel |
| 06/20/2013 | WO2013086852A1 Downward air extraction system and method for tunnel air |
| 06/20/2013 | WO2013086850A1 Downward air extraction system and method for tunnel air |
| 06/19/2013 | CN203008950U Full-automatic scraper-trough conveyer groove dead wind preventing device |
| 06/19/2013 | CN203008949U Negative pressure ventilation device |
| 06/12/2013 | CN202995407U Coordinated control system of ventilating device for tunnel construction |
| 06/12/2013 | CN202991101U On-off control assembly for coal mine air door |
| 06/12/2013 | CN202991100U Electrical coupling automatic clutch assembly for coal mine air door |
| 06/12/2013 | CN202991099U Anti-reflux air distributor |
| 06/12/2013 | CN202991098U System utilizing power plant waste heat for mine ventilation and cooling |
| 06/12/2013 | CN202991097U Underground coal mine ventilation system |
| 06/12/2013 | CN202991096U Ventilation control system used for tunnel face |
| 06/12/2013 | CN202991095U Tunnel ventilating device electricity consumption managing device |
| 06/12/2013 | CN202991094U Integrated monitoring system of tunnel ventilating device |
| 06/12/2013 | CN202991093U Mine temperature-adjustable ventilating device |
| 06/12/2013 | CN103149932A Robot for preventing underground coal mine methane accumulation |
| 06/12/2013 | CN103148007A Mine ventilating fan control system capable of automatically adjusting air quantity |
| 06/12/2013 | CN103147796A Ventilation monitoring system for gas explosion prevention |
| 06/12/2013 | CN103147782A Linked air door bottom threshold |
| 06/12/2013 | CN103147781A Automatic ventilation system for tunnel construction |
| 06/12/2013 | CN103144645A Tunnel ventilation pipeline construction car |
| 06/12/2013 | CN102494435B Connecting device for mine return air heat exchanger and diffusion tower |
| 06/11/2013 | US8460074 Apparatus and method for providing breathable air to safe havens within a mine |
| 06/05/2013 | EP2598718A1 Method and system for tunnel ventilation in normal conditions and in conditions of fire |
| 06/05/2013 | CN202975782U Optical fiber temperature measurement-type automatic monitoring device for mine main ventilator |
| 06/05/2013 | CN202970755U Air door locking device for mine |
| 06/05/2013 | CN202970754U Shaft hot-air system |
| 06/05/2013 | CN202970753U Annular guardrail air distributor for hanging scaffold |
| 06/05/2013 | CN202970752U Harmful gas dispersing device |
| 06/05/2013 | CN202970205U Mechanical locking device |
| 06/05/2013 | CN103133029A Comprehensive prevention excavation working face one-ventilation three-prevention accident device |
| 06/05/2013 | CN102102535B Dual-power dual-fan integrated switch with preferred main power |
| 06/05/2013 | CN101743378B Mine seal with adhesive |
| 05/30/2013 | US20130137356 Method And System For Tunnel Ventilation In Normal Conditions And In Conditions Of Fire |
| 05/29/2013 | CN202954830U Automatic safety air door |
| 05/29/2013 | CN103122770A Device for comprehensively preventing one ventilation and three prevention accidents of stope face |
| 05/29/2013 | CN103122769A Intelligent unpowered tunnel ventilation device |
| 05/28/2013 | CA2628724C Hydraulically powered door and systems for operating same in low-temperature environments |
| 05/22/2013 | CN202946415U Mining explosion-proof type axial flow local fan |
| 05/22/2013 | CN202946197U Gas concentration real-time monitoring system of underground coal mine |
| 05/22/2013 | CN202946182U Mine pressure relief damper with enhanced air impact resistance |
| 05/22/2013 | CN202946181U Tunnel ventilation system based on shield tunneling machine |
| 05/22/2013 | CN202946180U Tunnel ventilation system suitable for underground public transit system |
| 05/15/2013 | CN202937292U Tunnel construction ventilating system |
| 05/15/2013 | CN202937291U Mining rigid air duct for explosion blocking and explosion insulation |
| 05/15/2013 | CN202937290U Cable trench ventilation device |
| 05/15/2013 | CN103104283A 'One ventilation and three prevention' equipment for comprehensively preventing accidents in driving face |
| 05/15/2013 | CN103104282A 'One ventilation and three prevention' equipment for comprehensively preventing accidents in driving face |
| 05/08/2013 | CN202926398U Mining voice sensor for open and-shut mode of air door |
| 05/08/2013 | CN202926368U Scale-adjusted air window |
| 05/08/2013 | CN202926367U Air duct switching device of double fans |
| 05/08/2013 | CN202926366U Large air quantity filter ventilation system used for tunnel rescue vehicle |
| 05/08/2013 | CN202926365U Mine ventilation air-increasing device |
| 05/08/2013 | CN202926157U Regulating shutter air window |
| 05/08/2013 | CN202926036U Air door locking device and air door locking system |
| 05/08/2013 | CN103097660A Method and system for tunnel ventilation in normal conditions and in conditions of fire |
| 05/08/2013 | CN103089288A Air door |
| 05/08/2013 | CN103089287A Adjustable working face dust simulation experiment device |
| 05/08/2013 | CN102182459B Method for recovering remaining triangle coal on two-winged stope by flexible shield support mining method |
| 05/01/2013 | CN202914122U Check door for coal mine hard air duct |
| 05/01/2013 | CN202914121U Air cylinder and air cylinder protective breathable mesh used in air cylinder |
| 05/01/2013 | CN202914120U 隧道通风装置 Tunnel ventilation |
| 05/01/2013 | CN202914119U Automatic control system for air current stability of coal face |
| 05/01/2013 | CN103075173A High-position inclined E-type ventilation system of coal face |
| 05/01/2013 | CN103075172A Original diffusion tower-based mine return air heat energy utilization device |
| 05/01/2013 | CN101550840B Natural dispersion air-discharge apparatus for road tunnel |
| 05/01/2013 | CN101550836B Natural dispersion air-discharge method for road tunnel |
| 04/25/2013 | DE102011116411A1 Smoke or fire protection cover for forming escape corridor in transportation tunnel, has retainer with deflection device, which deflects fire protection element so that element forms roof and sections of corridor in protection arrangement |
| 04/24/2013 | CN202900302U Pressure-resistant pressure-equalizing air door for mines |
| 04/24/2013 | CN202900301U Underground vehicle passing ventilation door |
| 04/24/2013 | CN103061794A Grate strip type temporary replacing device of vertical shaft explosion-proof door |
| 04/17/2013 | CN202882979U Power-assisting opening device for air door of high negative-pressure area |
| 04/17/2013 | CN202882978U Chain wheel type non-pressure air door |
| 04/17/2013 | CN202882977U Mining gas backflow-preventing air duct device |
| 04/17/2013 | CN202882976U Hard reducing air duct |
| 04/17/2013 | CN202882975U Steeply-inclined thick seam horizontal segmentation top coal caving gob-side entry retaining Z-shaped ventilating device |
| 04/10/2013 | CN202866860U Spring type damping device enabling air door to be easily opened |
| 04/10/2013 | CN202866859U Mine non-pressure air door spring-type automatic closing locking device |
| 04/10/2013 | CN202866858U Non-pressure ventilation door of film-covered bamboo plywood |
| 04/10/2013 | CN202866857U Bearing type hinge non-pressure air door |