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Patent Searching and Data


Matches 601 - 650 out of 2,913

Document Document Title
WO/1995/002803A1
A fluidic oscillator (1) which is symmetrical about a longitudinal plane of symmetry (P) includes elements (10, 14, 16) for generating an oscillating two-dimensional fluid jet, an obstacle (24) with a cavity (40) impinged upon by the osc...  
WO/1995/000786A1
The invention relates to a servo-valve with a tongue-like piezo-ceramic flexible transducer which is firmly clamped at one end and can be moved at the other by the application of an electric voltage from a position blocking an air inlet ...  
WO/1994/029600A1
A transducer (10) which provides a regulated pneumatic output as a function of an electric control input includes a housing (16), a gas regulator (22), and a particle trap (51). The housing (16) has a passage (20) therein, the passage (2...  
WO/1994/028318A1
The present invention relates to a microvalve usable primarily as a pilot valve in pneumatic controls. The prior art solenoid valves used in this field can be miniaturised only at considerably high cost. The microvalve of the invention c...  
WO1994017538A3  
WO/1994/017538A2
A diode device (10) containing a microparticle polymer element (12) is disclosed. Also disclosed are mechanical switching devices that employ the microparticle polymer element.  
WO/1994/011640A1
A valve used to control the flow of fluid of a mangetorheological fluid, in which the mechanical properties of the magnetorheological fluid are varied by applying a magnet (1, 2, 3), is described. The valve can comprise a magnetoconducti...  
WO/1994/007607A1
The present invention provides a simple form of nozzle assembly for use in generating sprays from a fluid, which comprises a first member (11) having one or more nozzle outlets (14), one or more fluid inlets (16) and one or more channels...  
WO/1994/005516A1
A method for making a groove (205) of a precise width in a substrate (210). The groove may have any cross-sectional shape. The groove is formed by initially etching the substrate. The groove width (W) is then measured. The measured groov...  
WO/1994/004832A1
A micro-miniaturizable valve has a pressure compensating chamber (2), a first semi-active valve (3) arranged between the pressure compensation chamber (2) and a first fluid line (L1) and a second semi-active valve (4) arranged between th...  
WO/1994/000696A1
The microvalve of the invention is made up in layers of at least one lower part (11), a central part (12) and an upper part (13). The sealing ring (31) (closing member), the valve plate (29) (pressure equalisation area) and the diaphragm...  
WO/1994/000695A1
A magnetostrictive transducer has a magnetostrictive layer (2) arranged on a flexible element, for example a flexible rod (11). The flexible element (11) is deflected by an outer magnetic field. The thin magnetostrictive layer is compose...  
WO/1993/024237A1
Apparatus for generating a spray of liquid comprises a nozzle (56) for receiving a flow of liquid and for forming the liquid into a jet, and means (eg. a hydrodynamic whistle 34, 52) for generating vibrations in the jet using energy obta...  
WO/1993/023887A1
The combination of a gas depolarized electrochemical battery, i.e., a battery containing at least one cell, with one ore more tiny electrically activated, thermally responsive semiconductor microactuators, i.e., a "valve-on-a-chip", disp...  
WO/1993/022565A1
A hydrofluidic oscillator including a momentum exchange fluidic amplifier (10) coupled to a four-way reciprocal valve (12). The four-way valve is connected to control flow of hydraulic fluid from a source (42) thereof to a using apparatu...  
WO/1993/022626A1
A fluidic oscillator and a flow meter comprising a means (10, 14, 16) for forming an oscillating two-dimensional fluid jet, and an obstacle (22) having a main cavity (26) on which the oscillating jet impinges, and secondary cavities (34,...  
WO/1993/020351A1
A fluid controlling microdevice, such as a micropump or a microvalve, wherein a stepped portion (7) is provided on an intermediate base member (1) so that a height ratio of an upper chamber (8) to a lower chamber (9) which constitute par...  
WO/1993/010385A1
The object of the invention is to allow the smallest doses of substances to be supplied and shut off over a variable period of time in a very reliable manner and with stable operation. The new micromechanical valve essentially has three ...  
WO/1993/005885A1
A fluidic oscillator which is free of feedback passages has an oscillation chamber having a length greater than its width, a pair of mutually facing and complementary-shaped sidewalls (13, 14), planar top and bottom walls (141, 142), and...  
WO/1992/022763A1
A miniature actuating device (1), is disclosed, with a carrier (13), a diaphragm (11), a hollow space (15) being formed between the carrier (13) and the diaphragm (11) and an insulating layer (12) being arranged between them, and with tw...  
WO/1992/014199A1
A flow regulator (10) placed in a fluid path to passively compensate for variations in fluid pressure by deflection or movement. In one embodiment, a silicon micromachined housing (11) has a damper beam (20) cantilevered to the interior ...  
WO/1992/013200A1
The proposal is for a multilayer microvalve for switching or controlling fluid flows having an inlet and a shut-off component. The inlet is formed as at least one aperture in a first layer. The shut-off component takes the form of a seco...  
WO/1992/010686A1
Substantial alteration of the flow conditions in a fluid stream are effected by the application of controlled disturbances to the boundary of or within the stream by one or more piezoelectric actuators. The actuators have resonance frequ...  
WO/1992/008059A1
There is disclosed a vortex valve (1) comprising a housing defining a vortex chamber (3), the housing (2) having an inlet (6) through which liquid may enter the vortex chamber (3) in a manner to promote swirl within the vortex chamber (3...  
WO/1992/004569A1
A valve is formed from a silicon wafer (20). A position detector having a first electrical contact (54) formed on a glass support (32) mounted on the back face of the wafer (20), a second electrical contact fixed to the wafer (20) and a ...  
WO/1992/001160A1
A valve is formed by machining a silicon wafer (18) bonded to a glass wafer (2). This machining forms a membrane (44) and a sealing ring. Part of the surface of the membrane (44) and optionally the sealing ring are oxidised in order to i...  
WO/1991/012434A1
A multi-layered microvalve has an inlet connection (22), a return connection and an outlet connection (23, 24) which are produced by two-dimensional structuring of layers of material. The microvalve has a first stage (1) and a second sta...  
WO/1991/011623A1
A servovalve apparatus for use in fluid systems which comprises an elongate flexible valve element (60, 408) having a fixed end and a free, moveable end, and a conductive coil (42) which surrounds at least a portion of the valve element ...  
WO/1991/002594A1
A nozzle for jetting self-vibratory fluid stream, which comprises a main nozzle for forming a jet stream, side walls for producing eddies on the right and left sides of the jet stream while preventing the stream from sticking thereto, an...  
WO/1991/002169A1
A microvalve composed of multiple layers bonded together is distinguished by the fact that all layers are structured only from one side. Prior to bonding of a new layer to the preceding layer, the new layer is homogeneous or unstructured...  
WO/1991/001464A1
The body of the anti-return valve is formed within a silicon plate (1) machined by photolythographic processes. The plate (1) delimits a valve chamber (7) with two glass plates (2, 5) adhered to the respective sides of the plate (1). The...  
WO1990014940A3  
WO/1991/000464A1
A semiconductor microactuator (10, 310) has a silicon semiconductor substrate (12, 302) having suspension means (14, 304) connected thereto. The suspension means (14, 304) has a first layer of material (28, 328) having a first thermal ex...  
WO/1990/015933A1
A microvalve (10) with a multi-layer structure is proposed having a closing member (24) allocated to a valve seat (23) with a pressure equalisation surface (27) which acts on a sprung annular diaphragm (18) against a sprung surface (26)....  
WO/1990/014940A2
A method of producing a fluidic module from two or more pieces (B1, B2) of plastic material having an intermolecular bonded interface, comprises forming an interface surface (2) on each piece, forming at least one fluidic passageway (4) ...  
WO/1990/013750A1
A micromechanical actuator has a movable part, such as a membrane, bending beam or the like, which can be moved relative to a stationary part by a combination of electromagnetic and electrostatic forces. The manufacturing technology and ...  
WO/1990/010158A1
A fluidic circuit (10) having two oscillators (22, 24) which separately vent to a common volume (78) and receive pressurized fluid inputs along separate flow paths (54, 56) is provided with filters (80) positioned both upstream and downs...  
WO/1990/006587A1
A micromechanic manipulator has a substrate (1), heating elements and a manipulator arm (2) that works based on the principle of the bimaterial effect. Known bimaterial manipulators carry out perpendicular movements to the surface of the...  
WO/1990/006470A1
A micromachined miniature valve (10) used for gas chromatography has very low valve and interconnection dimensions to reduce the fluid volume inherent in other gas switching valves to thereby provide accurate measurements involving small...  
WO/1989/009477A1
A micromechanical device comprises an element whose position can be varied consisting of a bimaterial system and which can be placed and maintained in a predetermined position. The instantaneous position of the element is determined by m...  
WO/1989/003297A1
A method of producing a fluidic module from two or more pieces of plastic material having an intermolecular bonded interface, comprises forming an interface surface on each piece, forming at least one fluidic passageway in at least one o...  
WO/1987/007351A1
Micro-valve arrangement in which at least ten micro-valves (12) are arranged per square millimetre of a surface (14). The structure of these micro-valves (12), namely the inlet (26, 46), outlet (28, 48) and valve seating (34, 50) are mad...  
WO/1987/006201A1
A fluidic oscillator (20) is relatively short in length (under about 2.5 W where ''W'' is the width of the power nozzle) and has a leaky splitter (22) located proximate the center of the outlet flare (21) so as to divide the outlet into ...  
WO/1986/000030A1
Valves for controlling pressurised fluids and assemblies of similar valves connectable so a single pressurised fluid source to provide a variable supply. The basic valve comprises a body (1) having a fluid inlet (2) which is connected to...  
WO/1985/001133A1
An electric signal to pneumatic signal transducer (10) comprises a nozzle (12) that accepts an input pneumatic supply and expels a gas stream (20). A receiver (16) that is spaced from the nozzle (12) is positioned to recover at least a p...  
WO/1984/003335A1
Fluidic transducers of electrical signals from an electronic computer to accurately switch flow of a liquid to a utilization device. A liquid filled hollow channel (166 and 166') is accelerated along the flow axis thereof to produce a fl...  
WO/1982/002076A1
A fluid flow control element is constituted by a fluidic amplifier having an interaction region (11) shaped to provide side wills leading to a pair of fluid flow outlets (13, 14) The fluid flow inlet (10) for the fluidic amplifier has po...  
WO/1981/002258A1
A method and a device, Fig 1, for sealing an opening (15, 8, 10) between two zones in a fluidized bed and/or between the bed and its surrounding (22). In the bed particles (2) are intended to be maintained suspended by means of a carrier...  
WO/1981/001966A1
The liquid spray device includes an oscillator for producing a fan spray with liquid droplets of uniform size. The oscillator is constituted by a power nozzle (15), a pair of side walls (20, 21) forming a pair of vortex spaces (30, 31) o...  
WO/1981/001316A1
An improved load resolver (41) is provided of the type which receives a pair of generally unequal pressure signals (32, 34), and which resolves the pair of pressure signals (32, 34) by blocking the lesser and transmitting the greater. Ea...  

Matches 601 - 650 out of 2,913