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Patent Searching and Data


Matches 201 - 250 out of 1,305

Document Document Title
WO/1996/041141
A differential pressure transducer includes a pair of interior chambers (12, 14) separated by supported, nominally planar electrically conductive diaphragm (16). A magnetic assembly is positioned on at least one chamber wall opposite an ...  
WO/1996/037764
A selectively pressured housing apparatus comprising a body, a wall member, an aperture, and a mounting seat. The body has a chamber therein extending along a first axis, is open at a first axial end and a second axial end, and has a por...  
WO/1996/027123
First capacitance pressure sensor (70A, B) has a fusion bonded single crystal structure (sapphire with cavity). Second one (70A, B) has an elongated and thick single crystal structure. Third one (70A, B) uses the electric field emanating...  
WO/1996/019371
Device for eliminating sudden pressure changes in an air-conditioned or ventilated vehicle. The vehicle comprises an inlet (3) for external air and an outlet (5) for internal air, the inlet being connected to a suction tube (2) drawing t...  
WO/1996/006338
A pressure transmitter apparatus having a unitary body portion (16), separate diaphragms and flange elements (14) and disposed within the body, a first and second normally vertical pressure passages. The first and second pressure passage...  
WO/1996/001414
A media-isolated differential pressure sensor apparatus and corresponding method combines a first signal (207, 209) provided by a first pressure sensor (101), indicative of a difference between a first pressure and second pressure applie...  
WO/1995/024625
A fool-proof valve battery useful as a connecting module for a differential pressure measurement transducer has first and second inlet connections (1, 2) for connecting to a differential pressure source (+p, -p), first and second outlet ...  
WO/1995/008759
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/1994/021992
The invention relates to a pressure difference measurement converter with an inner housing divided into two parts transversely to its longitudinal axis, between the two housing sections of which is clamped a central diaphragm bearing a p...  
WO/1994/017383
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/1994/005988
A pedestal mount capacitive pressure sensor (10) is supported in a housing (11) and used to sense fluid pressures to provide air pressure data relating to the performance of air vehicles. The capacitive sensor uses a thick base plate (40...  
WO/1993/024818
A two-wire transmitter includes a pressure sensor (5; 160) comprising first (11; R¿9?, R¿10?) and second (13; R¿11?, R¿12?) sensing means each having an impedance value which varies with pressure being measured and with a predetermin...  
WO/1993/022643
A method and apparatus for measuring differences between forces, pressures, and combinations thereof. One or more force or pressure deformable members, preferably metal bellows, are internally connected by rigid linkage which is in turn ...  
WO/1993/021506
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/1993/017313
The invention relates to a pressure difference sensor with a semiconductor measuring diaphragm which is clamped between two bearers of insulating material to form an inner chamber; each of the bearers is fitted with a flat electrode on t...  
WO/1993/008479
A two wire transmitter (12) responsive to a pressure differential sensor (30) includes a fixed module (28) and a removable module (26). The fixed module (28) is adapted for connection to an analog removable module (26) having a compensat...  
WO/1992/017757
A pressure sensing transmitter (10) is provided that has high overpressure protection. The transmitter (10) includes a housing (12) having a first cell(14), a second cell (16), a sensing chamber (18), first and second pressure signal rec...  
WO/1992/017756
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...  
WO/1992/015850
In a two wire transmitter (10), a capacitive sensor (5) senses differential pressure and provides a differential pressure signal based on the differential pressure sensed. The differential pressure signal varies with variations in static...  
WO/1992/010731
A pressure transmitter (10) has a pressure transducer (12) in a transmitter housing (14). The transmitter housing (14) includes a groove or a notch (20) defining a flexure closely proximate a housing outer rim (24). The outer rim (24) re...  
WO/1991/015743
An industrial machine such as a civil engineering machine and a construction machine, comprising a hydraulic system in a driving system thereof, wherein conditions of pressure in respective portions of the hydraulic system are detected a...  
WO/1991/005232
A capactive ratioing oscillator circuit utilizing a prior art pressure capsule, but through modification of the stable variable oscillator circuit achieves a digital output which varies with the square root of the capacitance ratio C35 C...  
WO/1991/000415
An apparatus is disclosed for the accurate measurement of pressure changes. That apparatus has a reference accumulator (10) and a differential pressure transducer (50). The reference accumulator (10) stores a pressure representative of t...  
WO/1990/011503
This invention relates to a differential pressure gauge utilized for measuring the difference between fluid pressures at two positions spaced apart from each other in a longitudinal direction of a fluid conduit line in the internal space...  
WO/1990/004701
A solid state pressure sensor (35) utilizes a brittle diaphragm (36) made of a material such as silicon, which is mounted between base plates of glass (37, 38), and which deflects in response to pressure. The base plates (37, 38) of glas...  
WO/1989/006350
The present invention concerns a differential pressure meter for measuring differential pressure between two different points. As taught by the invention, the meter comprises two vertical, substantially transparent tubes (1, 2), said tub...  
WO/1988/007185
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/1988/002107
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/1988/001049
A deflecting diaphragm differential pressure sensor (10) is formed so all electrical elements (30A-30D) and connections (34B) from external circuitry to the sensor (10) are isolated from the pressure media. The deflecting, pressure sensi...  
WO/1988/000335
A cell for sensing differential pressures has a single brittle material diaphragm (63, 93, 102) mounted on support plates (50, 75, 120, 130) positioned on opposite sides of the diaphragm (63, 93, 102). The diaphragm surfaces (43C, 77C, 1...  
WO/1987/003088
A corrosion proof differential pressure transducer includes a central disk (12) and two thin diaphragms (14, 16) mounted close to but spaced from the disk on both sides thereof, with the diaphragms being intercoupled to move together. Th...  
WO/1986/002447
A pressure sensing cell construction (10) comprises a pair of plates (42, 43) which are joined together around the periphery, to form a first chamber (45). A second chamber (52), preferably identically constructed to the first chamber (4...  
WO/1985/004474
A differential pressure sensor (10) senses a difference in pressure between a first input (low) pressure (12) or "reference pressure" and a second input (high) pressure (14) and provides a differential sensor signal representative of the...  
WO/1985/002676
A transducer (10) for sensing pressure has a first (60) and a second (62) pressure chamber for sensing pressure and a center stop (20) which has two substantially flat faces (52, 54), each face cooperating with an associated sensor diaph...  
WO/1985/002677
A transducer (10) has a first (22) and second (24) sensing diaphragm configured such that a first pressure (P1) is applied to the first diaphragm (22) and a second pressure (P2) is applied to the second diaphragm (24) and wherein both di...  
WO/1984/000532
An automatic pressure sensitive regulation assembly and process for use with a non-mechanical particulate solids flow apparatus (2). The automatic pressure sensitive regulation assembly comprises first and second pressurized fluid distri...  
WO/1983/004308
A pressure transducer for measuring the difference in pressures between two liquids, includes two very closely spaced plates (12 and 14), at least one of which (14) is a diaphragm, and opposed conductive coatings (18 and 20) on these two...  
WO/1983/004286
The method is applied to a turbomachine, particularly to a pump, and to a support for a pressure sensor of a gaseous or liquid fluid, particularly an electronic pressure pick-off. The pressure or differential pressure of the fluid (3) co...  
WO/1983/002004
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/1982/004125
Capacitive pressure transducer in which a sensing diaphragm (40) bearing an electrode (56) is mounted to flex in response to applied fluid pressure relative to a reference member (42) having an opposed electrode (64). A thin film or laye...  
WO/1982/002093
In a method for measuring the partial pressure of a gas in a medium that is not critical as to the selection of such medium, a load quantity is supplied to a material having a selectivity with respect to ions. The potential difference be...  
WO/1982/001250
A capacitance transducer has a central chamber (53, 55) with a conductive diaphragm (36) disposed therein to separate the chamber into at least two portions (53 and 55), at least one portion having an electrical conductor (61, 63) dispos...  
WO/1982/001041
The electropneumatic converter comprises a control part (10) responsive to a pressure difference, connectable to conduits (4, 5) of a pneumatic circuit and having a device with capillary tubes (12, 13) arranged in a casing (35) and parti...  
WO/1980/001318
The device (10) includes a housing (12) defining a primary chamber (26). The primary chamber (26) has a first end (28), a second end (30) and an axis (32) extending between the two ends. A movable member (34, 62) is supported in the prim...  
JP2013257225
To provide a pressure transmitter improved in hydrogen blocking effect and reduced in susceptibility to the influence of hydrogen permeation by appropriately designing the fixed structure of a diaphragm coated with a hydrogen blocking fi...  
JP2013234959
To provide a pressure sensor capable of downsizing a frame while protecting gauge resistor formation surfaces.Two sensor chips (11, 12) respectively include diaphragms (23, 33) and gauge resistors (24, 34) formed on surfaces (20, 30) opp...  
JP2013190343
To reduce generation of stress due to restraint of a sensor diaphragm to secure expected proof pressure.Of an area S1 of a peripheral part 11-2c of stopper members 11-2 facing one surface of a sensor diaphragm 1-1, an area S1a on the out...  
JP2013190325
To provide a differential pressure transmitter which achieves further miniaturization of a body by decreasing a diameter of a pressure sensing diaphragm without causing problems such as hydrogen permeation and cracks.A sensor chip 11 is ...  
JP2013185917
To increase the total number of sensor pairs satisfying specifications of measurement accuracy determined to different output, and to decrease the number of sensor single bodies which are waisted by finding no pair.For example, if a phys...  
JP2013185970
To obtain desired frequency characteristics while reducing a detection error or oscillation by disturbance.A pressure sensor includes a detection circuit for detecting a difference between an output of a first pressure fluctuation sensor...  

Matches 201 - 250 out of 1,305