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Class 417/195 - Specific material


Subclass of Class 417 - Pumps
Definition: Apparatus in which a claim includes a recitation of the
No. of patents: 19
Last issue date: 01/23/2007


NumberTitleIssue Date
7165948Ejector
A nozzle (41) is made of a sintered metal, and a pressure increasing portion (a mixing portion (42) and a diffuser (43)) is manufactured by plastic-forming a metal pipe. Accordingly, the nozzle (41) can be manufactured in a short time whi...
01/23/2007
7114525Method and apparatus for reduction of fluid-borne noise in hydraulic systems
Method and apparatus for eliminating turbulence-induced noise in a pulsation-absorbing flexible hose, as in a hydraulic power steering system containing a pressure fluid-feeding pump and a steering gear operated by the pressure fluid discharged from the pump. The ho...
10/03/2006
6633623Apparatus and methods for protecting a jet pump nozzle assembly and inlet-mixer
A jet pump for a nuclear reactor includes a riser and an inlet mixer having a set of nozzles and a mixing section for receiving coolant flow from the nozzles and suction flow from an annular space between the reactor vessel and the shroud core. To minimiz...
10/14/2003
6460784Liquid-gas jet apparatus
In the field of jet technology a nozzle of a liquid-gas jet apparatus for feed of an active liquid medium has a central channel and a peripheral annular channel and the total surface area of the outlet cross-section of the nozzle channels is determined fr...
10/08/2002
6352412Liquid-gas ejector
The interior surface of a mixing chamber of a liquid-gas ejector in the field of jet technology is made of a material having a critical surface wetting tension which does not exceed 75 dyne/cm. A liquid-gas ejector realized in accordance with the inventio...
03/05/2002
6250890Liquid-gas jet apparatus
The invention pertains to the field of jet technology and essentially relates to a nozzle for discharge of an ejecting liquid medium. The nozzle constitutes a collection of shaped channels. The central channel is coaxial to the mixing chamber, the other c...
06/26/2001
6146105Venturi pumping device
A venturi type pumping device including a body having a tubular through bore between a bore inlet end and a bore outlet end, a restriction in the bore acting to produce a reduction in pressure downstream from the restriction, a delivery device for the del...
11/14/2000
5667365Expandable mixing section gravel and cobble eductor
In a hydraulically powered pump for excavating and transporting slurries in hich it is immersed, the improvement of a gravel and cobble eductor including an expandable mixing section, comprising: a primary flow conduit that terminates in a nozzle that crea...
09/16/1997
5478209Jet barrel and hose fitting insert for a jet pump
A jet barrel and hose fitting insert are provided for a jet pump that supplies coating powder to a spray gun. The insert reduces the likelihood of impact fusion in the barrel and fitting. The insert comprises a cylindrical portion of small outside diamete...
12/26/1995
5222525Plastic diffuser
A non-metallic diffuser for use in a gas flow amplifier. The non-metallic diffuser is molded from a conductive moldable resin into a truncated cone. Embedded within the outer circumferential periphery of the diffuser, located near the inlet port, are nuts...
06/29/1993
4820131Venturi nozzle assembly construction in a shallow well pump casing
A shallow well centrifugal pump having a casing forming a fluid flow cavity and having a fluid intake end with a threadless bore and a suction inlet communicating with the cavity through the bore, and a diffuser disposed in the casing cavity and spaced fr...
04/11/1989
4759691Compressed air driven vacuum pump assembly
Compressed air driven vacuum pump assembly wherein the energy contained in compressed air is used to create a vacuum flow within a housing unit. Preferably, the modular housing unit includes a series of axially aligned air nozzles to provide a substantial...
07/26/1988
4753577Fluid powered retrievable downhole pump
A jet pump system including a pump body having a nozzle carrier, a pump housing, and a cross-over housing connected in axially alignment. A flow discharge housing extends from the cross-over housing up to near the nozzle carrier. An injector nozzle having...
06/28/1988
4632649Gas jet pump
A gas jet pump having a housing and a mixing nozzle holder which, in the area of their flange connection, form a mounting for a mixing nozzle. The mounting comprises on the one hand a clamping groove formed by both flanges in their parting plane, and on t...
12/30/1986
4562612Fluid-driven transducer vacuum tool
A fluid-driven transducer vacuum tool is disclosed in the preferred embodiment. Pressurized liquid or compressed gas passes through a nozzle tip which is enclosed in a casting. Because the cavities leading to the nozzle tip are of increasingly smaller dia...
01/07/1986
4400138Multiple jet eductor
An improved multiple jet eductor assembly is described consisting of two parts: (1) a manifold ring with a pressurized water inlet and a plurality, preferably four, of radially-spaced, forwardly- and convergingly-directed jet nozzles, and (2) a tube havin...
08/23/1983
4285638Jet pump nozzle assembly
A jet pump has a nozzle assembly within a pump body to direct power fluid into a venturi assembly for mixing with well fluid to be pumped. The nozzle assembly has a nozzle shell removably mounted in the pump body and a nozzle tip mounted securely to the n...
08/25/1981
4135861Jet pump with ceramic venturi
A jet pump has a nozzle for a power fluid, a Venturi for the power fluid and a well fluid, and a passage for the well fluid radially outside the Venturi and into the discharge of the nozzle. The power fluid aspirates the well fluid and the combined stream...
01/23/1979
3942962Pulse jet and venturi liner
A removably insertable liner of elastically deformable material sized to be disposed within and in interfacially engaged relation with the inner surface of a rigid venturi element....
03/09/1976
 
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