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| Number | Title | Issue Date |
| 4174759 | Rotary drill bit and method of forming bore hole Means for emitting high-pressure jets of fluid such as water, and mechanical rock breaking wheels, are positioned on a rotary drill bit for cooperatively cutting an axially extending bore hole through earth material. A center core opening is cut into the ... | 11/20/1979 |
| 4168752 | Flexible conduit for effecting lateral channelling in coal or oil shale beds There is provided in accordance with the invention apparatus and a method for boring holes through carbonaceous deposits. The method involves the step of introducing combustion-supporting gases such as air under pressure through the apparatus installed in a we... | 09/25/1979 |
| 4144942 | Method of setting a pile without noise or vibration and apparatus therefor This invention relates to a method of setting a pile without causing any noise or vibration. A hollow pile is erected along a leader fixed on the ground, a screw auger is inserted through the hollow center of the pile, the screw auger is hung on the leade... | 03/20/1979 |
| 4140346 | Cavity mining minerals from subsurface deposit Cavity mining minerals from a subsurface deposit by hydraulically jetting and disintegrating a mineral deposit locally, and transporting lumps and particles to the surface via a borehole.... | 02/20/1979 |
| 4129335 | Fluid jet method and device for breaking hard material A hard compact material, such as rock, is broken by directing a high velocity jet of fluid, such as water, into a drill hole in the material to be broken. The jet is generated by a nozzle and is directed into the drill hole through a tubular member, which... | 12/12/1978 |
| 4126194 | Rock bit with extended pickup tube A three cone rock bit includes an improved circulation system for drilling fluid which increases the horizontal flow vector of the fluid adjacent the bottom surface of the hole being drilled. A pair of nozzles, located near the hole perimeter and between ... | 11/21/1978 |
| 4124162 | Shroud for a submerged jet cutting nozzle A shroud for a submerged jet cutting nozzle is described which separates the jet from surrounding fluid environment and enhances the cutting effect.... | 11/07/1978 |
| 4119160 | Method and apparatus for water jet drilling of rock Rock drilling method and apparatus utilizing high pressure water jets for drilling holes of relatively small diameter at speeds significantly greater than that attainable with existing drilling tools. Greatly increased drilling rates are attained due to j... | 10/10/1978 |
| 4114705 | Rock drilling tool having pulsed jets In rock drilling utilizing mechanical destruction of the rock and circulation of drilling fluid for removing debris from the cutting face, the drilling fluid is directed on to the cutting face in the form of two opposed pulsed jets, the cycles of which ar... | 09/19/1978 |
| 4106577 | Hydromechanical drilling device A hydromechanical drilling tool which combines a high pressure water jet drill with a conventional roller cone type of drilling bit. The high pressure jet serves as a tap drill for cutting a relatively small diameter hole in advance of the conventional bi... | 08/15/1978 |
| 4103971 | Method for breaking rock by directing high velocity jet into pre-drilled bore A hard compact material such as rock is broken by directing a high velocity jet of relatively incompressible fluid, such as water, into a hole which is drilled in the material to be broken. The jet is generated by a nozzle in alignment with the hole and i... | 08/01/1978 |
| 4084648 | Process for the high-pressure grouting within the earth and apparatus adapted for carrying out same This invention concerns with a high pressure grouting process. For lateral cutting of earth in the ground, a high speed core water jet, having its injection velocity equal to at least a half of the sonic one and surrounded by an air ring jet is used. For ... | 04/18/1978 |
| 4079890 | Device for building up high pulse liquid pressures A device intended for building up high pulse liquid pressures may find suitable application in the mining industry and can be advantageously used in constructions of hydro-power installations. The device comprises a cylinder accommodating a two-step pisto... | 03/21/1978 |
| 4077481 | Subterranean mining apparatus Apparatus for subterranean slurry drilling and mining of granular ore, such as phosphates, with a combined drilling and mining apparatus. The apparatus includes a tool string having a drilling head and mining head that are selectively interchangeable on i... | 03/07/1978 |
| 4077671 | Subterranean drilling and slurry mining method Method for subterranean slurry drilling and mining of granular ore, such as phosphates, with a combined drilling and mining apparatus. The apparatus for performing the method includes a tool string having a drilling head and mining head that are selective... | 03/07/1978 |
| 4074779 | Backwashing system for slurry pick-up used in hydraulic borehole mining devices A hydraulic borehole mining device is provided of the type wherein a pair of high pressure water jets located along the length of the device are used to cut the mineral to be mined and a slurry pick-up system used to transport the particles cut away by th... | 02/21/1978 |
| 4073351 | Burners for flame jet drill A burner in the form of a flame jet drill bit engine for liquid fuels is disclosed. The burner has particular utility in a flame jet drill and comprises an axially elongated body with a combustion chamber disposed therein. At least one flame jet nozzle is... | 02/14/1978 |
| 4067617 | Subterranean drilling and slurry mining Subterranean slurry mining with one or more mining nozzles which, during mining, directs a high pressure jet of liquid into a granular ore matrix to reduce the ore to a slurry which is thereafter pumped to the surface by an eductor pump including a high p... | 01/10/1978 |
| 4062403 | Pump-down sand washing tool An improvement in a pump-down tool for use in sand washing operations is provided. The pump-down tool includes a tubular member having a locomotive member positioned thereabout and a fluid passageway positioned therethrough and a sand washing tool positio... | 12/13/1977 |
| 4059166 | Subterranean drilling and slurry mining Subterranean slurry mining with one or more mining nozzles which, during mining, directs a high pressure jet of liquid into a granular ore matrix to reduce the ore to a slurry which is thereafter pumped to the surface by an eductor pump including a high p... | 11/22/1977 |
| 4049066 | Apparatus for reducing annular back pressure near the drill bit An apparatus adapted to be connected in a drill string is disclosed. It utilizes an axially located turbine which is driven by the mud flow through the drill string. The turbine is supported by a shaft and connected to an appropriate gear train. The gear ... | 09/20/1977 |
| 4047580 | High-velocity jet digging method The method of digging by piercing soil and rock with a jet of liquid discharged at high velocity from a nozzle together with high-velocity air jets discharged from another nozzle arranged concentrically around the liquid nozzle, characterized by the veloc... | 09/13/1977 |
| 4031971 | Jet nozzle drilling assembly A drilling assembly including a jet nozzle bit rotatable on a fluid supply shaft. The assembly includes a bearing housing protected by seals and vent ports to prevent fluid which has leaked between the fluid supply shaft and the jet nozzle bit from contam... | 06/28/1977 |
| 4027407 | Jet flow alternator A jet flow alternator for reversing the flow of a confined fluid stream which includes selectively controlled tubes to cause said stream to flow in either one of two directions under pressure.... | 06/07/1977 |
| 3952816 | Drilling system and method of pulling it up A drilling system includes a drill pipe and a cutting means located therein. A locking mechanism with said drill pipe is provided on said cutting means and is operatively connected with a spearhead engageable with an engaging mechanism of a pulling-up dev... | 04/27/1976 |
| 3938600 | Hydraulic mining nozzle-air lift device A hydraulic nozzle device for removing soil from the interior and below a hollow structure.... | 02/17/1976 |
