|
Match
|
Document |
Document Title |
|
|
7267505 |
Mine ventilation panel system
A panel system for making mine ventilation structures. The panel system comprises a plurality of elongate metal panels having flanges along sides thereof configured for overlapping one another when...
|
|
|
7232368 |
Mine ventilation
A mine air crossing includes opposite side walls and a deck extending from side wall to side wall. Each side wall includes a plurality of sections assembled side-by-side and interconnected by...
|
|
|
7182687 |
Air deflecting mine ventilation structure
A mine ventilation structure is incorporated at the intersection of first and second intersecting passages in a mine. The ventilation structure comprises a tunnel-forming construction (e.g., a pair...
|
|
|
7118472 |
Control system for pneumatically-powered door installation
A mine door installation has a frame installed in a mine passageway. At least one door leaf is mounted on the frame for swinging movement between open and closed positions. Movement of the door...
|
|
|
6955594 |
Mine door system including an air pressure relief door
A mine door of the present invention is adapted for installation in a mine passageway and includes a leaf adapted for swinging between a closed position and an open position. The leaf may be...
|
|
|
6938372 |
Pneumatically-powered mine door installation with hydraulic checking system
A mine door assembly has a frame. At least one door leaf is mounted on the frame for swinging movement between open and closed positions. Movement of the door leaf is powered by a pneumatic...
|
|
|
6846132 |
Mine stopping and braces therefor
A mine stopping installed in a mine passageway includes a plurality of elongate panels extending generally vertically in side-by-side relation from a floor to a roof of the passageway to at least...
|
|
|
6715961 |
Method of supporting mine walls and installing a mine stopping
A method of supporting opposite first and second walls of a mine passageway includes providing an elongate beam having opposite first and second ends and a longitudinal axis. The beam is configured...
|
|
|
6688813 |
Mine stopping and method of installing same
A portable wall section for incorporation in a mine stopping or for use as a mine permanent stopping or seal form, comprising vertically extensible panels secured in side-by-side relation, a...
|
|
|
6682263 |
Multiple tier stopping and method of constructing stopping
A mine stopping installed in a mine passageway includes a lower tier of elongate panels extending generally vertically in side-by-side relation from a floor of the passageway. Each panel of the...
|
|
|
6669551 |
Mine ventilation structure and deck panels therefor
A mine ventilation structure with a deck made up of panels of inverted channel shape modified to be of relatively light weight yet strong.
|
|
|
6594954 |
Mine door installation
A power mine door installation utilizing compressed air from the compressed air system available in the mine as the power source for a hydraulic door-operating mechanism.
|
|
|
6554699 |
Screening arrangement in a ventilation system
An arrangement for screening off a ventilated space ( 5 ) in a floor construction arranged on a subfloor ( 2 ) and having joists ( 6 ) that are supported by a plurality of level-adjusting spacer...
|
|
|
6457906 |
Mine stopping
A mine stopping installed in a mine passageway having air flowing through the passageway in a first direction includes a rigid wall extending across the passageway to close the passageway and an...
|
|
|
6450735 |
Method and equipment for ventilating underground workings
A method and kit for installing a stopping in a mine opening includes securely fixing in the mine opening a screen of a size of about 2 to 24 mesh, preferably about 10 to 20 mesh, most preferably...
|
|
|
6425820 |
Mine door power drive system
A mine door system including at least two doors positioned in a mine passageway in spaced relation forming an airlock. The doors include at least one leaf movable between open and closed positions...
|
|
|
6422790 |
Foam blocks for construction of mine tunnel stoppings
A light weight foam block being substantially rectangular in shape, having horizontal and/or vertical pairs of tongues and grooves around its perimeter enabling it to interlock with horizontally...
|
|
|
6419324 |
Method of sealing off a mine passageway
A method of sealing off a mine passageway. The method involves installing a plurality of vertical panels side by side across the passageway to form a stopping. The stopping has gaps between...
|
|
|
6402611 |
Hinged mine stopping
The hinged mine stopping has at least two panels joined by a hinge defining a wall adapted for forming an air tight seal in a mine passageway to improve mine ventilation. Each panel has a lower...
|
|
|
6379084 |
Mine stopping
A stopping system for use in mines. The stopping system includes a king post truss for reinforcing the stopping panels against excessive deflection due to a pressure differential across the...
|
|
|
6361430 |
Balanced ventilation doors
A pair of door-sections make up a mine ventilation door. The door-sections are hinged to the side-walls of the passage. One of the door-sections opens upstream and the other downstream, so one is...
|
|
|
6334738 |
Prefabricated metal overcast having a crushable lower section
A ventilation overcast comprises a frame member that defines a structure having a substantially inverted U-shape with first and second opposed side wall portions and a roof portion. A curtain...
|
|
|
6264549 |
Mine ventilation
A tunnel-forming overcast structure for incorporation in the installation of an overcast construction at the intersection of two intersecting passages in a mine, each passage constituting an airway...
|
|
|
6220785 |
Mine stopping, method of constructing same and panels thereof
A permanent mine stopping comprising two spaced-apart metal walls with a filling in the space therebetween keyed or adhesively bonded to the walls and having sufficient strength in tension to...
|
|
|
6164871 |
Mine stopping having a swinging door
A mine stopping comprising a wall extending across a passageway in a mine to close the passageway. The wall has an opening therein. A door is hinged adjacent the opening for swinging between a...
|
|
|
6129483 |
Prefabricated metal overcast having a crushable lower section
A ventilation overcast may comprise a plurality of support columns, each of which has an upper end and a lower end. A plurality of cross beams are connected between the upper ends of each of the...
|
|
|
6056638 |
Mine ventilation wall construction
A ventilation passage system for a mine having a main shaft from which several branch shafts may extend, wherein each shaft has a generally flat floor and ceiling, the system being constructed of a...
|
|
|
5879231 |
Mine ventilation structure
A mine ventilation structure used to block a passageway or to prevent mixture of ventilation air at the intersection of two passageways. The passageway has sidewalls and a ceiling. The ventilation...
|
|
|
5725327 |
Permanent mine bulkhead seal and method for constructing same
A water-resistant mine bulkhead or seal is provided in which two walls are constructed across the mine entry. One of the walls is constructed in layers. After a lower portion of the layered wall is...
|
|
|
5466187 |
Mine ventilation structure
A mine ventilation structure for installation at the intersection of first and second passageways in a mine. The ventilation structure defines a first passage communicating with the first...
|
|
|
5385504 |
Permanent ventilation seal
A mine seal is provided in which two walls are constructed across the mine entry. One of the walls is constructed in layers. After a lower portion of the layered wall is erected, a first layer of...
|
|
|
4601320 |
Industrial door
A pressure differential compensating door includes a curtain for closing a doorway having a first upper end, a second lower end and side edges and a curtain winding mechanism having the first end...
|
|
|
4516879 |
Foam slabs in mine tunnel stoppings
A stopping for use in improving underground mine ventilation comprising an assembly of wall elements, said wall elements comprising: (a) a plurality of rigid blocks, and (b) a plurality of...
|
|
|
4397224 |
Sheet metal attachment system and method for installation of mine brattices
A sheet metal attachment system and method for the installation of underground mine brattices of the type in which a gas impervious barrier of malleable sheet metal is retained on a peripheral...
|
|
|
4388779 |
Easy-to-open, pressure-resistant door assembly
Between regions of different air pressure, a door pivots on an axis located a substantial distance from the nearest edge; this edge moves inwardly as the door pivots about the door axis in a first...
|
|
|
4370003 |
Temporary gas seal for gas level drift of an in situ oil shale retort
A temporary gas seal is provided in a gas level drift of an in situ oil shale retort system which includes a production region having a panel of retorts producing gaseous and liquid products and an...
|
|
|
4265486 |
Apparatus for in-situ retorting
Apparatus for the in-situ retorting of carbonaceous deposits includes a plurality of retorts connected to a common exhaust tunnel effectively free of broken shale into which products of the...
|
|
|
4096702 |
Mine stopping device and method of constructing same
A mine stopping device and method of constructing same utilizing a plurality of laterally spaced substantially vertically disposed support members extending from the floor to the ceiling of a mine...
|
|
|
4055074 |
Window method for measuring leakage
A method of measuring fluid leakage around or through a barrier. In the preferred embodiment, the leakage measured was around a permanent mine stopping. To make the measurements a temporary test...
|
|
|
3972272 |
Mine brattice
A mine brattice for closing a mine tunnel against the passage of gas including a yieldable framework of lap jointed plate-like beam members having a peripheral configuration corresponding roughly...
|
|
|
3948057 |
Portable mine stopping device
A ribbed sheet of flowable material is positionable on the sides and roof of an air passage of a mine for sealing irregularities in the sides and roof and extends across the air passage to prevent...
|
|
|
3417568 |
Mine shaft bratticing
|
|
|
2817505 |
Mine escape tunnel
|
|
|
2738179 |
Mobile brattice machine and ramp for mines
|
|
|
2188694 |
Automatic mine trap door
|
|
|
1806602 |
Title is not available
|
|
|
1594921 |
Mine brattice
|
|
|
1575626 |
Safety apparatus for use in mines
|
|
|
1456808 |
Safety station for subterraneous passageways
|
|
|
1432972 |
Automatic mine door
|