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WO/2000/028192 |
A method of controlling velocity of an armature of an electromagnetic actuator as the armature moves from a first position towards a second position is provided. The electromagnetic actuator includes a coil and a core at the second posit...
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WO/2000/026736 |
A constant flow valve includes a housing (1) containing a fluid flow passageway (10), a resiliently-biased piston (18) located in said passageway and mounted for movement in response to changes in the differential fluid pressure across t...
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WO/2000/020940 |
A method and system for controlling the rate of fluid flow. A flow restrictor (28) having known pressure drop and flow rate characteristics provided in a passage (26) through which the fluid, preferably a gas, flows. An upstream pressure...
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WO/2000/011532 |
A versatile flow rate controller comprises an orifice (8) exchangeable depending on the required opening for a different fluid and a different flow rate range, a control valve (2) on the upstream side, a pressure detector (6) between the...
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WO/2000/011530 |
The present invention provides adjustable control valves (10) for controlling flow from a fluid supply. The valves (10) of the present invention can accurately regulate a wide range of flow rates and require a relatively small amount of ...
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WO/2000/011531 |
An orifice plugging sensor for a flow-rate controller having an orifice, comprising a memory (M) in which is stored reference pressure decrease data Y(t) about the upstream-side pressure P¿1? measured when the flow rate is changed from ...
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WO/2000/010065 |
A flow regulator (246) comprises a housing (252) defining a chamber therein and including an inlet port (248) and an outlet port (250). A piston assembly (254), including an orifice defining member (264) in which is formed an orifice (33...
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WO/2000/008364 |
The invention relates to an electric-control valve for regulating flow of fluid, wherein the water diaphragm front and rear chambers are provided between the inlet and the outlet conduits. The main stream of water flows from the inlet co...
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WO/2000/007651 |
A control member (10) for a valve (12). The valve (12) has an inlet (16), an outlet (18) and a primary flow path therebetween. The control member (10) is rotatable to alter a control flow area (24) of the primary flow path. The amount of...
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WO/2000/003314 |
The invention concerns a device constituting a converter of pneumatic or hydraulic energy into electric power, consisting of a pneumatic or hydraulic motor driven by a fluid under pressure and associated with an electric generator connec...
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WO/2000/001969 |
A valve arrangement for controlling a fluid flow, especially for a relatively large system, such as a heating or water supply system, has a main valve (2) controlled by differential pressure, and an adjustable pilot valve (7) in a pilot ...
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WO/1999/063412 |
A gas supply equipment comprising a gas control valve (2), an orifice accommodating valve (9) provided downstream of the control valve (2), a pressure detector (3) provided between the control valve (2) and the orifice accommodating valv...
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WO/1999/054557 |
A method for controlling the displacement of a variable displacement hydraulic pump (12) to produce a desired flow of fluid is disclosed. The method includes the steps of: determining that the machine (100) is being operated in a digging...
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WO/1999/053388 |
In one aspect the invention is disclosed as a fluid and/or pressure regulator (110) incorporating a (preferably spring) diaphragm (140), or a diaphragm having an outlet aperture, while a further aspect of the invention discloses the regu...
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WO/1999/046652 |
A fluid valve for controlling flow of a fluid from an upstream region to a downstream region includes a housing having a fluid exit, a fluid entry member having a sidewall, and a shut-off member associated with the housing. The sidewall ...
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WO/1999/045447 |
A fluid valve (44) for controlling the flow of a fluid from an upstream region (76) to a downstream region (28) includes a housing (10) and a piston (30) slidably disposed within the housing. The piston includes a fluid inlet (36) for re...
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WO/1999/044740 |
An apparatus for varying the rate of flow of a fluid in a pathway by the use of deformable valves and clamps which change their size, position, state or function on application of heat and/or pressure is described. A disposable chemical ...
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WO/1999/040350 |
The invention concerns a flow control valve (1) with an inlet connection (26), an outlet connection (12) having between them a throttling arrangement (2, 3) comprising a first throttle and a second throttle, the second throttle (5, 9) be...
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WO/1999/038552 |
An implantable drug infusion device which features an improved flow regulator which permits the flow rate to be independent of reservoir pressure within a given pressure range. The flow regulator features a membrane having a hole, the me...
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WO/1999/038057 |
A fluid supply apparatus comprising a pressure flow controller for controlling the rate of flow of fluid, a fluid selector valve for opening/closing the fluid passage on the secondary side, and a fluid supply controller for controlling t...
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WO/1999/036844 |
An arrangement is disclosed for controlling fan motors (18) in fan-powered terminal units (10) which permit the air flow of the terminal units to be factory preset and reset using a voltmeter. The fan motor is responsive to the pulse wid...
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WO/1999/021067 |
The present invention provides a technique for controlling fluid flows through a mass flow controller ('MFC') device (10) in different directions. The technique includes a device (10) having a novel control valve assembly design for sele...
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WO/1999/018405 |
Method and device for controlling a process gas (10) during drying of a product in a drying chamber, in which the process gas is brought into contact with the product so that a substance, for instance water, is taken up by the process ga...
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WO/1999/011943 |
The invention relates to a regulator for adjusting the medium flow from a medium supply to at least one hydrostatic or aerostatic pocket of a bearing arrangement, a threaded spindle nut or a guide. Said regulator comprises a housing and ...
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WO/1999/010791 |
A fluid flow control valve and method for operating which maintains the rate of flow of fluid therethrough at a substantially constant rate regardless of variations in pressure of the fluid flowing therethrough. The fluid flow control va...
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WO/1999/009463 |
A pressure type flow rate control apparatus to be used in a gas supply system for semiconductor manufacturing equipment, which calculates a flow rate (Q = KP¿1?) by using a detected pressure P¿1? of a pressure detector (4) installed be...
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WO/1999/009324 |
An orifice for use in pressure type flow rate control unit which can be manufactured easily and inexpensively, and which has a linear relationship between pressure P¿1? upstream of the orifice and the flow rate over a wide range of pres...
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WO/1999/006891 |
A system for controlling the flow of a mixed phase fluid through a vessel such as a separator. A flow control device is located in at least an inlet to or an outlet from the vessel. Sensors are distributed about the vessel to sense chara...
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WO/1999/006893 |
A control for controlling an output of a system (10) of an automotive vehicle having an electric-operated control device (14) that controls an output of a system of the automotive vehicle in accordance with an electric control signal com...
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WO/1999/005408 |
A pressure regulator is associated with a solenoid-operated valve that may be operated by a pulse waveform at a fundamental frequency substantially greater than the frequency response of the valve mechanism. The pressure regulator causes...
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WO/1999/005409 |
A pressure regulator is associated with a solenoid-operated valve that is operated by a pulse waveform at a fundamental frequency substantially greater than the frequency response of the valve mechanism. This substantially attenuates sol...
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WO/1999/004615 |
A vapor delivery system for delivering a vapor-phase reactant to a chemical process reactor (26) at a substantially constant flow rate. The vapor delivery system includes a source of a reactant material (10), means for converting (14) th...
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WO/1998/057064 |
A peristaltic pump is provided with a housing, a pump head in the housing, and a receiving path defined along a housing and pump head for receiving tubing. Two spaced-apart temperature sensors are provided. One temperature sensor is loca...
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WO/1998/057242 |
The invention concerns a device (100) for controlling the flow of a granular product, said device being characterised in that it comprises: a chamber (9) forming a stator; rotating inside the stator, a hollow rotor (12) with its axis ort...
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WO/1998/054071 |
A powder/granule feeder comprising a cleaning material tank (1) having the inside thereof divided into an upper chamber (2), an intermediate chamber and a lower chamber (5) the intermediate chamber being divided into a left intermediate ...
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WO/1998/052874 |
A water treatment system (10) having dosing control for providing treated water having very low organic and ionic contamination, that can be accurately dispensed. The water treatment system (10) having dosing control includes a water inl...
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WO/1998/053233 |
An electromagnetic flow control apparatus (20) includes a fluid flow conduit (26), a magnetic membrane (21), and a plurality of discrete sources of selectably variable magnetic fields (22, 27'), such as electromagnets, arranged in an ord...
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WO/1998/050699 |
A system for automated filtration (24) of liquids for quantitative collection of desired filtrates or permeates (33) has a processor-controlled pump unit (25), which controls the rate of flow. The processor-controlled pump operates on da...
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WO/1998/048328 |
The present invention pertains to a device comprising an element for proportioning a fluid flow ($g(f)) from the inlet to the outlet of the proportioner (10), fitted with a membrane (12) with at least one opening (16) which acts as a res...
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WO/1998/048329 |
Disclosed is a proportioner for a fluid flow ($i($g(f))) from the inlet in a first proportioning element (10) to the outlet of a second proportioning element (10), characterized in that the first and second proportioning elements compris...
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WO/1998/048330 |
Disclosed is a device (10) for proportioning a fluid flow from the inlet to the outlet, fitted with a membrane (12) having one or more openings (16) which act as a resistance to the medium outflow, and with a built-in pressure sensor (14...
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WO/1998/047794 |
The invention relates to a regulating system for an industrial conveyor belt driven by at least one drive mechanism or an industrial device similar to a conveyor belt. According to the invention, bulk goods, such as excavated material or...
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WO/1998/047793 |
The invention relates to a conveying device for open-cast mines, comprising at least one conveyor belt driven by at least one drive mechanism, or a device similar to a conveyor belt. According to the invention, excavated material or raw ...
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WO/1998/038555 |
The flow of fluids from a low pressure range to a high pressure range can be efficiently controlled by using a pressure sensitive device which can economize fluid, such device being also provided with a check valve. The fluid saving devi...
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WO/1998/037343 |
A micro mass flow controller (10) has a sonic choked flow restriction (28) with an oscillatable valve (26) for repetitiously opening and closing the sonic choked flow restriction (28) in a time-modulated sequence to set or vary mass flow...
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WO/1998/037469 |
A device for controlling a liquid flow by means of a gas pressure. The device comprises a pressure chamber (5), in which an overpressure, an underpressure or atmospheric pressure may prevail. The pressure in said pressure chamber (5) can...
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WO/1998/036338 |
An apparatus (10) for varying the flow area of a conduit (12). The apparatus comprises a flap (14) mounted in said conduit (12) which is off-centre pivotally mounted to pivot in response to flow of fluid (F) through said conduit (12). Th...
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WO/1998/030943 |
A flow-responsive diverting valve (10) having a valving chamber (45), a fluid inlet (49) and two fluid outlets (43, 81). A magnet (55) is fixed on the valve body (25) and when fluid flows into the inlet (49) at the low flow rate, a valvi...
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WO/1998/029663 |
The flow control valve consists of a body (20) containing a 'bucket' shaped valve element (1) that moves in a bore (2). The valve element (1) has a discharge orifice (8) through which a needle valve (9) projects. Movement of the valve el...
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WO/1998/028670 |
The invention relates to a flow regulation fitting (1) for regulating volume flow in pipelines, characterized in that at least one sensor (6), integrated in a flow housing, detects the volume flow and is connected with an evaluation unit...
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