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| Number | Title | Issue Date |
| 4936059 | Abrasive swivel assembly and method An abrasive swivel assembly for providing a rotating, particle-laden fluid stream and, ultimately, a rotating particle-laden fluid jet is disclosed herein. This assembly includes a tubular arrangement for providing a particle-free stream of fluid, a swive... | 06/26/1990 |
| 4854091 | Abrasive swivel assembly and method An abrasive swivel assembly for providing a rotating, particle-laden fluid stream and, ultimately, a rotating particle-laden fluid jet is disclosed herein. This assembly includes a tubular arrangement for providing a particle-free stream of fluid, means f... | 08/08/1989 |
| 4806869 | An above-ground arrangement for and method of locating a discrete in ground boring device A technique for locating the position of a boring device within the ground with respect to a particular reference location along an above ground path directly over the intended course to be taken by the boring device is disclosed herein. This technique ut... | 02/21/1989 |
| 4780064 | Pump assembly and its method of operation An overall pump assembly for smoothly pumping a compressable liquid from a supply is disclosed herein along with two intensifiers which form part of the assembly and a control arrangement for driving the intensifiers in specific phase relationship to one ... | 10/25/1988 |
| 4697769 | Method and apparatus for controlling bound vortices in the vicinity of lifting surfaces The lift generated by delta wings is due primarily to large vortices associated with the flow separation near the leading edge. The invention includes a perturbation device to control the separation shedding of those vortices and manipulate their frequenc... | 10/06/1987 |
| 4679826 | High pressure hose fitting A high pressure hose fitting which includes a crimpable sleeve for use over a hose and a conical ferrule that separates the cord layer of the hose from the inner linings and clamps the cord layer ot the sleeve. A housing enclosed the fitting and provides ... | 07/14/1987 |
| 4669783 | Process and apparatus for fragmenting rock and like material using explosion-free high pressure shock waves A technique for fragmenting rock or other relatively hard and/or compact material without the use of explosives is disclosed herein. In accordance with this technique, an elongated, blind opening is provided in the rock or other material to be fragmented ... | 06/02/1987 |
| 4669760 | Swivel fitting arrangement for use in a pressurized fluid line A swivel fitting arrangement for use in a pressurized fluid line, especially a high pressure, high flow rate line, is disclosed herein and utilizes first and second adjacent sections of the line in coaxial and unconnected relationship to one another so as... | 06/02/1987 |
| 4665944 | On-off dump valve This invention relates to a high pressure valve of the dump type. The valve body contains a slideable, hollow spool with ports connecting its interior and exterior. When the valve is in the on position, all ports are located in the pressurized portion of ... | 05/19/1987 |
| 4660773 | Leakproof high pressure nozzle assembly A nozzle assembly comprising a tubular sleeve, a nozzle and a nozzle body. The nozzle and nozzle body are held in an assembled relation with their bores aligned by the tubular sleeve which encircles them. The sleeve provides a seal between the nozzle asse... | 04/28/1987 |
| 4649963 | Ultra-high pressure hose assembly An ultra-high pressure hose assembly capable of withstanding sustained internal fluid pressures exceeding 60,000 psi is disclosed herein and consists essentially of an innermost tubular core, a plurality of successive tubular layers and an outer containme... | 03/17/1987 |
| 4648215 | Method and apparatus for forming a high velocity liquid abrasive jet A method and apparatus for producing a coherent stream of high velocity abrasive laden liquid. The method includes allowing the particles to assume the direction and velocity of a high velocity jet of liquid. This method also allows concentration of parti... | 03/10/1987 |
| 4536135 | High pressure liquid piston pump A piston and a cylinder within a pump housing cooperate with the inner walls of the housing to form a high-pressure reservoir surrounding the cylinder to provide a continuous compressive force thereon to prevent tensile stresses in the cylinder during pum... | 08/20/1985 |
| 4437525 | Hand held water drilling apparatus A hand held fluid jet drilling apparatus is described. The drill includes an elongated drill stem with a fluid jet nozzle on one end and a motor on the other end. High pressure fluid is supplied to the drill from an external power pack which also produces... | 03/20/1984 |
| 4435902 | Articulated boom water jet cutting apparatus A fluid jet cutter using an articulated boom support system is disclosed. The cutter utilizes a support system which allows rotational translation in all three axes. The boom system allows displacement of the cutter over a broad area. A jet catcher is att... | 03/13/1984 |
| 4401345 | Hydraulic borehole mining system A hydraulic underground mining system for operating through a small diameter borehole into a subterranean body. An elongated mining tool includes a liquid jet nozzle that is movable in a vertical direction along the length of the mining tool for forming a... | 08/30/1983 |
| 4392655 | High-pressure seal with controlled deflection under pressure A seal for a movable shaft which extends from a cavity within a high-pressure vessel maintains a uniform gap between the shaft and the seal body at high pressures to form an effective seal while providing adequate clearance between the shaft and the seal ... | 07/12/1983 |
| 4371001 | Check valve assembly A check valve assembly adapted for connection to a high pressure reciprocating pump cylinder, comprising valve body means, inlet check valve means and outlet check valve means. The valve body means has an inlet end adapted for connection to the pump cylin... | 02/01/1983 |
| 4313570 | High pressure cutting nozzle with on-off capability An ultra high pressure water jet cutting nozzle is disclosed which comprises a lightweight poppet valve assembly coupled by a lost motion connection to a valve actuator. The poppet valve assembly seals directly to the jet-forming element of the nozzle ins... | 02/02/1982 |
| 4306627 | Fluid jet drilling nozzle and method A fluid jet drilling nozzle and associated drilling method. The nozzle is adapted to be connected to a source of high pressure fluid and to be rotated about a rotation axis, and comprises a body formed so that it partially encloses a cavity, which cavity ... | 12/22/1981 |
| 4124359 | Electrostatic precipitator An electrostatic precipitator is disclosed comprising a series of parallel collector electrode plates of similarly corrugated form, with the continuously curved and successive crests and valleys of the corrugations of each plate positioned in opposition t... | 11/07/1978 |
| 4081892 | Method of making composite structure A method of forming a composite structure having precision surface openings, such as an air foil through which air can be drawn in for boundary layer control. A metallic face sheet is bonded to a base member that is formed with elongate channels which are... | 04/04/1978 |
| 4081200 | Method and apparatus to remove structural concrete By the action of water jetted against the concrete in systematically controlled manner under ultra-high pressures (i.e. above 25,000 psi) areas of structural concrete are removed to required depths through the one or more levels of aggregate involved effi... | 03/28/1978 |
| 4029440 | High pressure fluid intensifier and method A pressure intensifying apparatus to deliver a very high pressure stream of water through a nozzle. There is a single working piston having two pressure surfaces of a relatively large area, the working piston being connected to two high pressure pistons e... | 06/14/1977 |
| 4026322 | Reciprocating pump check valve assembly A valve assembly especially adapted for use with very high pressure reciprocating pumps. The main components are coaxially aligned. A main high pressure passage extends through the center of the assembly and has check valves at opposite ends thereof. One ... | 05/31/1977 |
