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Patent Searching and Data


Matches 601 - 650 out of 6,158

Document Document Title
WO/1996/025651A1
A pressure transducer delivers an electrical useful signal (Un) which is determined by the relative change in pressure with respect to a pressure event. Low-frequency variations in the output signal (Ux) of a sensor arrangement (1) which...  
WO/1996/018091A1
A manifold (10) includes a body having generally planar inlet surface (14). The inlet surface (14) includes a first inlet (16) and a second inlet (18) adapted for coupling to a pressurized process fluid. An outlet surface (22) on the man...  
WO/1996/016418A1
A capacitive absolute pressure sensor (10) includes a substrate (14) having an electrode (24) deposited thereon and a diaphragm assembly (12) disposed on the substrate (14). As pressure increases, the diaphragm (16) deflects, touches the...  
WO/1996/008704A1
A dome-shaped pressure vessel (36), contained in a pumping segment (10) for incorporation into a fluid delivery system, with an optimal shape for interfacing with a pressure sensing element (200), and which is capable of uniformly distri...  
WO/1996/005494A1
Insert for pressure transducers in connection with a dialysis machine. The insert (10) consists of a cup-shaped container with an inner filter unit (21) accessible via a cover (25) for connection (31) to an outer apparatus such as a drip...  
WO/1996/005493A1
A weld ring (30) for a pressure transmitter (11) welded to a corrosion resistant material (18) at one section (40) of the ring, and welded to a different material at a second section (42) of the weld ring (30). The sections (40, 42) of t...  
WO/1996/000888A1
An absolute pressure sensor subassembly includes a top cap bonded to a pressure sensor die and enclosing a reference vacuum. The subassembly is initially held in place within a housing by a vacuum or sublimeable solid adhesive while wire...  
WO/1995/033983A1
An improved fiberoptic pressure sensing system (8) is disclosed by tapering the tip end (14) of an optical fiber (12) or alternatively, by tapering or bundling a fiber or group of fibers (98) within a connector (92). By selectively-joini...  
WO/1995/024624A1
Pressure gauge for very high pressures and based upon a principle similar to the Bourdon tube, comprising a beam-shaped measuring element (10A) having an elongate cavity (12) lying eccentrically in the cross section of the measuring elem...  
WO/1995/017846A1
Calibration apparatus and method for calibrating a movable pressure sensor (18) include the use of a stop device (98) to establish a reference position outside the sensing movement range of a first sensor. While in vitro, a reference pre...  
WO/1995/008758A1
A two-wire transmitter (2) senses differential pressure, absolute pressure, and process temperature of a process fluid. The information can be used to provide an output representative of mass flow through a pipe (4). The transmitter (2) ...  
WO/1995/008759A1
A transmitter (10) provides an output indicative of pressure of process fluid. The transmitter (10) has a first body (14) with a passageway (32) filled with isolation fluid extending from a first port to a pressure sensor (16). A second ...  
WO/1994/025843A1
An isolator diaphragm (13) is formed and connected to a support member (16A) so it will withstand periodic high pressure cleaning. The isolator diaphragm (13) has a peripheral wall portion bonded to a planar support (26) surface and is f...  
WO/1994/017383A1
A pressure sensor has a substrate (21) and a layer (25) which defines together with the substrate a pressure sensor cavity (24). The layer has a diaphragm-like area (26) upon which an outer pressure may be applied. In order to create a m...  
WO/1994/014042A1
The output value of this sensor does not vary with temperature and so the nonlinearity of the output due to temperature change can be improved. The sensor comprises a housing (8) provided with a pressure detection chamber (3); a pressure...  
WO/1994/011719A1
The invention concerns a method of fabricating membranes mounted on a frame, the method including the following steps: (a) a membrane film is applied to a substrate in such a way that it can be detached from the substrate again, (b) the ...  
WO/1994/005986A1
A low range pressure sensor (10) includes a base plate of brittle material (12), and a diaphragm plate assembly (14) mounted on the base plate (12) and sealed around a periphery (16) to the base plate (12). Pressures are introduced to ca...  
WO/1993/022641A1
A device for measuring the pressure in an infusion tube (12), including a pressure sensor (20) and a housing (14) comprising at least one chamber (16) with one side defined by a deformable membrane (18) contacting the wall of the infusio...  
WO/1993/021506A1
A transmitter (8) with a flame arresting header (16) senses a pressure of a process fluid with a diaphragm (44) which is sealed to the header. The diaphragm (44) transfers the pressure of the process fluid acting on an outer surface of t...  
WO/1993/020865A1
A pressure monitor for directly measuring the pressure in a liquid in a catheter, comprising light emitting means (1), photo sensitive means (2), receiving the light from the light emitting means (1) and transforming the light received i...  
WO/1993/001481A1
An improved closed-end manometer which overcomes the problems associated with prior U-tube manometer devices. The invention comprises a small bore tube which is transparent or translucent at least along the measuring portion and which ma...  
WO/1993/001480A1
An isolator (10) for use in pressure transmitters comprises an isolating diaphragm (14) that is thin, and made of a suitable corrosion resistant metal, such as tantalum, and which must be anchored to an isolator housing (12) made of a su...  
WO/1992/022239A1
The present invention relates to a method for detecting the onsetof atherosclerosis and for detecting the degree of atherosclerosis. Accordingly, one aspect of the present invention correlates data obtained from arteries having a measure...  
WO/1992/021012A1
The invention concerns a method of measuring the pressure of a gas in a gas accumulator which can be connected up to a hydraulic-fluid circuit and in which the gas is separated from the fluid by a dividing element. When the dividing elem...  
WO/1992/017756A1
A metal thin film (58) bonds a semiconductor bonding region (54, 56) of a diaphragm layer (50) to a ceramic bonding region (44) of a high modulus support block (40). The arrangement isolates a pressure sensing diaphragm (60) from undesir...  
WO1991019156A3  
WO/1992/008121A1
True vapor pressure of liquid compositions, particularly multi-component compositions, is measured by a piston and cylinder apparatus (14) defining an expansible chamber (84) in which a sample of liquid is trapped, the chamber (84) is ex...  
WO/1992/008116A1
A central region (40) of an isolator diaphragm (30) used in a pressure transmitter, has a substantially flat shape at an undeflected position near room temperature and has a depressed shape at a deflected position at a colder temperature...  
WO/1991/019156A2
A device for measuring gas pressure inside cartridges has an essentially cylindrical housing (10) mounted on a base plate (13) and provided with a stepped bore (12a, 12b) in the axial direction that tapers in the direction of the shot an...  
WO/1991/004475A1
A transmitter (10) that provides an output indicating pressure difference between a line pressure and atmosphere outside the transmitter (10) is made intrinsically safe by coupling the sensor cavity (44) as well as other cavities (12, 13...  
WO/1990/006496A1
A Bourdon tube (20) pressure gauge (10) has a movement amplifying mechanism (32) comprising a pinion (30) of segment (25) shaped permanent bar magnets (29a) extending radially and terminating at a circular edge magnetically driven by a p...  
WO/1989/012809A1
A quad disk static pressure probe apparatus (10) including: a hollow stem member (15) having a plurality of static pressure ports (16) disposed on its periphery; an apertured collar unit (14) surrounding the stem member (15) and being in...  
WO/1989/011601A1
This invention relates to a coned disk spring which is used as a diaphragm and a keytop returning spring of a keyboard switch, or the like. The coned disk spring (D) of the present invention has a structure whose corrugated section descr...  
WO/1989/006512A1
An optical reflection hydrophonic probe is useful for determining the pressure-time behaviour of pressure waves in fluids. One end of an optical waveguide (glass fibre) dips into the fluid. The reflection of light at the tip of the glass...  
WO1988009490A3  
WO/1988/009490A2
Floating the diaphragm portion of a diaphragm sensor in the pressurizing fluid frees the diaphragm from exterior housing forces, and makes overall manufacture and replacement inexpensive. A diaphragm can be protected from exterior stress...  
WO/1988/007185A1
An isolator apparatus (12) for coupling pressure from a pressurized fluid carried in a conduit (40) to a pressure sensor (10A) in a pressure transmitter (10) having an isolation diaphragm (24), isolation fluid (54), and a pressure sealin...  
WO/1988/002107A1
A pressure transmitter (10) is coupled directly to an industry standard flange adapter union (40) having a standard bolt hole spacing. Small diameter isolator diaphragms (30, 31) are positioned on the transmitter case (11) at locations s...  
WO/1987/007947A1
A capacitive pressure sensor (47, 75, 100, 130, 170, 190) that is fabricated in a batch process affords isolation for the sensing element (12, 102, 134, 183) and leads from the pressure media and provides stress isolation as well. The pr...  
WO/1987/007948A1
A pressure transducer has a stress isolator layer (18) which permits the sensor (25) to be non-resiliently mounted (hard mounted) to a mounting surface (26) that in turn is subjected to strain. The strain of the mounting surface (26) ten...  
WO/1987/004789A1
Pneumatic pressure sensor of the kind where the pressure to be sensed acts on a diaphragm (50) which moves to control the exhaust of gas from a pressurized control chamber (20). The invention provides means for inhibiting or preventing t...  
WO/1986/003835A1
The pressure detector which generates electric signals is provided with sensor elements (11) carried by a membrane (12) which is deformable as a function of the pressure and which closes a reference pressure chamber (18) with respect to ...  
WO/1985/002001A1
The flexible tubular conduit comprises an inner pipe (1) made of flexible material providing for tighteness characteristics with rspect to the conveyed product, a first assembly of reinforcement armatures (2) providing for resistance cha...  
WO/1985/001578A1
A sensing instrument (24) is used for sensing atmospheric pressure and the output is connected in a method of operation to provide accurate measurement information. The instrument (24) comprises an enclosure (26) that has a shape exposed...  
WO/1983/003136A1
A closed pressure monitoring system (20) in which a pump (27) delivers gas on a supply line (22, 29) through a first accumulator chamber (30) to a load device (21) and returns the gas on a returnline (23, 28) through a second accumulator...  
WO/1983/002157A1
A temperature or pressure sensing element of the kind having an expansible capsule or bellows (1) connected a capillary tube (2) by way of an hermetic seal is fabricated by sealing the capillary tube (2), which may be of aluminium, stain...  
WO/1983/002004A1
Improved apparatus (16, 17) for conveying fluid pressures to a differential pressure transducer (14). The apparatus (16, 17) comprises a single flange (16) connected to and fluidly coupled to the differential pressure transducer for conv...  
WO/1983/000217A1
A strut mounted multiple static tube providing, as shown, multiple separate static pressure measuring systems and using one probe (10) with separate sets (23, 24 and 35, 36) of pressure sensing ports for each system. The probe (10) is de...  
WO/1982/003916A1
A pressure transducer (12) having a housing (14, 16), a pressure port (24) through said housing (14), a cylindrical recess (22) in said housing (14, 16) and communicating with said pressure port (24). A pair of nested bellows (50, 64) is...  
WO/1982/001997A1
A pressure diaphragm (10), wherein at least a portion of an elongate fluid channel (19) is formed diametrically across, and is open through (21) a flat raised surface (13) of a substantially rigid, disk-like body (11). A flexible membran...  

Matches 601 - 650 out of 6,158