Class 338/36 - Fluid- or gas pressure-actuated

Subclass of Class 338 - Electrical resistors
Definition: Subject matter wherein the condition sensed is fluid or
No. of patents: 73
Last issue date: 10/07/2008

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Number	Title	Issue Date
7432795	Pressure sensor header having an integrated isolation diaphragm A pressure sensor header for a pressure transducer includes a header shell having a sensor cavity formed therein, a sensor element disposed in the sensor cavity, a fluid medium disposed in the sensor cavity, an isolation diaphragm closing the sensor cavity, and a jo...	10/07/2008
7369032	Method of joining a pressure sensor header with an associated transducer element A pressure transducer assembly including: a pressure sensor header; a transducer assembly member; and a joining arrangement disposed at an interface of the header and the transducer assembly member, for joining the header with the transducer assembly member, the joi...	05/06/2008
7334484	Line pressure measurement using differential pressure sensor A pressure sensor assembly for sensing a pressure of a process fluid includes a sensor body having a cavity formed therein to couple to a process fluid pressure. A deflectable diaphragm in the cavity deflects in response to the first and second process fluid pressur...	02/26/2008
7308830	Pressure sensor fault detection A diagnostic system for a pressure sensor having a cavity configured to receive on applied pressure is provided. The cavity has a first and a second wall. A deflectable diaphragm is positioned in the cavity and configured to form a first and a second capacitance wit...	12/18/2007
7270012	Semiconductor device embedded with pressure sensor and manufacturing method thereof The method for promoting the size reduction, the performance improvement and the reliability improvement of a semiconductor device embedded with pressure sensor is provided. In a semiconductor device embedded with pressure sensor, a part of an uppermost wiring is us...	09/18/2007
7262693	Process field device with radio frequency communication A field device for use in an industrial process control or monitoring system includes terminals configured to connect to a two-wire process control loop. The loop carries data and provides power to the field device. RF circuitry in the field device is provided for r...	08/28/2007
7233226	Method of producing a platinum temperature sensor A Platinum temperature sensor comprises a ceramic substrate and a platinum thin-film resistor applied to said ceramic substrate, a ceramic cover layer and a connecting layer generated from a ceramic green layer by pressure and temperature treatment. The ceramic cove...	06/19/2007
7212096	Pressure sensor header having an integrated isolation diaphragm A pressure sensor header for a pressure transducer includes a header shell having a sensor cavity formed therein, a sensor element disposed in the sensor cavity, a fluid medium disposed in the sensor cavity, an isolation diaphragm closing the sensor cavity, and a jo...	05/01/2007
7194375	Pressure sensor A pressure sensor 11 is provided with a connecter housing 30 having a pressure sensing element 20 arranged on an end surface thereof, a sensor housing 40 constructed to have the connecter housing 30 inserted thereinto, a pressure c...	03/20/2007
7170389	Apparatus for tantalum pentoxide moisture barrier in film resistors The present invention discloses a method of manufacturing a thin resistor with a moisture barrier by depositing a metal film layer on a substrate and depositing a layer of tantalum pentoxide film overlaying the metal film layer. The present invention also includes a...	01/30/2007
7005695	Integrated circuitry including a capacitor with an amorphous and a crystalline high K capacitor dielectric region The invention comprises integrated circuitry and to methods of forming capacitors. In one implementation, integrated circuitry includes a capacitor having a first capacitor electrode, a second capacitor electrode and a high K capacitor dielectric region received the...	02/28/2006
6995419	Semiconductor constructions having crystalline dielectric layers The invention includes semiconductor constructions. In one implementation, semiconductor construction includes a first conductive material. A first layer of a dielectric material is over the first conductive material. A second layer of the dielectric material is on ...	02/07/2006
6953721	Methods of forming a capacitor with an amorphous and a crystalline high K capacitor dielectric region The invention comprises integrated circuitry and to methods of forming capacitors. In one implementation, integrated circuitry includes a capacitor having a first capacitor electrode, a second capacitor electrode and a high K capacitor dielectric region received the...	10/11/2005
6696964	Device for monitoring the filling of a bag A device for monitoring the filling of a bag (10) comprises a resistor element to be mounted on the outside surface of the bag, the resistor element being a flexible potentiometer (20), the resistance whereof being changed by bending of the potentiometer ...	02/24/2004
6570485	Transducer packaging assembly for use in sensing unit subjected to high G forces A transducer packaging assembly for use in a sensing unit subjected to high forces of acceleration includes a base having a cavity. A pressure sensitive semiconductor die is bonded to a large backplate having a shape so that it nestles into the cavity but...	05/27/2003
6313729	Semiconductor device A semiconductor component is fashioned of a chip carrier comprising an approximately planar chip carrier surface on which chip carrier surface a semiconductor chip with a pressure sensor is secured, and composed of electrode terminals penetrating the chip...	11/06/2001
6211772	Semiconductor composite sensor A semiconductor composite sensor using a plurality of semiconductor piezoresistive gauge elements connected in series. The piezoresistive elements are separated so that a high potential terminal of one of the resistive elements having the same resistance ...	04/03/2001
6201467	Pressure sensor component and production method The pressure sensor component has a chip carrier with an approximately planar chip carrier surface. A semiconductor chip with an integrated pressure sensor is placed on the chip carrier surface. A pressure-detecting surface area of the pressure sensor is ...	03/13/2001
6046667	Pressure transducer with porous material for media isolation A pressure transducer which has a housing containing a sensing element and a noncorrosive fluid in contact with the sensing element. A porous material isolates the fluid from a harsh liquid or a liquid containing solids while allowing transmission of the ...	04/04/2000
5999082	Compensated oil-filled pressure transducers A pressure transducer employing a metal isolation diaphragm. A volume of oil is located between the metal diaphragm and a silicon sensor received in a base member. In order to reduce errors at very low pressure caused by the oil exerting a tension on the ...	12/07/1999
5973590	Ultra thin surface mount wafer sensor structures and methods for fabricating same A semiconductor sensor device including a semiconductor diaphragm member having a top surface coated with an oxide layer; P+ sensor elements fusion bonded to the oxide layer at a relatively central area of the diaphragm; P+ finger elements fusion bonded t...	10/26/1999
5891751	Hermetically sealed transducers and methods for producing the same A reduced size, hermetically sealed semiconductor transducer and methods for fabricating the same. In a preferred embodiment, the transducer comprises a transducer wafer including a diaphragm which deflects upon the application of a force thereto. At leas...	04/06/1999
5812047	Offset-free resistor geometry for use in piezo-resistive pressure sensor An improved resistor and connection region structure in which the geometries of the connection regions for a pair of radial resistors correspond to the connection region geometries for a pair of tangential resistors, thus inherently eliminating the need f...	09/22/1998
5760675	Piezoresistive device and fabrication method thereof Disclosed is the method of producing a piezo-device utilizing an ultra-thin Mo-C film as a piezoresistive material for a general class of improved piezo-device with the high sensitivity and the weak temperature dependence....	06/02/1998
5594405	Pressure transducer with pressure sensitive conductor A pressure transducer has a cylindrical body with a thread formed on at least part of the outer surface. A resistance element is wound in the thread and an internal bore receives pressurized fluid. The resistance element is strained by application of pres...	01/14/1997
5581226	High pressure sensor structure and method A high pressure sensor structure (11, 111, 211) includes a housing (12, 112, 212) having an upper cavity portion (13, 113, 213) and a lower cavity portion (16, 116, 216). A diaphragm (18, 118, 218) separates the upper cavity portion (13, 113, 213) from th...	12/03/1996
5541570	Force sensing ink, method of making same and improved force sensor An improved carbon-free force sensitive ink for a force sensor. The ink when deposited and dried can function at temperatures of up to 350° F. and pressures of up to 10,000 psi. The preferred ink includes a thermoplastic polyimide binder, conductive part...	07/30/1996
5483994	Pressure transducer with media isolation and negative pressure measuring capability A pressure sensor die is provided with a flexible membrane and a plunger which combine to amplify a low pressure signal while also providing media isolation between a fluid being measured and the internal components of a pressure sensor. One embodiment of...	01/16/1996
5353003	Force sensor A force sensor is provided which incorporates a pressure transducer disposed within a housing structure. A force transmitting means, such as a shaft slidable within an opening, is provided to communicate force from an external source to a diaphragm of a p...	10/04/1994
5329271	Semiconductor strain sensor A semiconductor strain sensor includes a silicon substrate, a strain resistive element and electrodes. The silicon substrate has a deformable portion which is deformed when stress is applied to it. The strain resistive element is formed on the deformable ...	07/12/1994
5264820	Diaphragm mounting system for a pressure transducer A pressure transducer for measuring high differential pressure media in a harsh environment where a diaphragm assembly is mounted to an intermediate support number which is mounted to a main support member where the high pressure media impinges on the dia...	11/23/1993
5231508	Hall effect gauge with magnetically-sensitive variable-resistance element A signaling gauge may utilize a magnetically actuated variable resistor made up of a plurality of noncaptivating, magnetically actuated switch elements, each of which is mounted in an influence zone of a path of a magnet carried on an arm of a condition s...	07/27/1993
5079954	Vacuum gauge The present invention provides a vacuum gauge having two integrated circuits connected in a half bridge circuit to register subatmospheric gas pressure from a change in thermal gas conductivity. One of the integrated circuits serves to generate an electri...	01/14/1992
5068635	Stress sensor having deformable ceramic hollow member A stress sensor for detecting a stress, including a ceramic hollow member, a pair of support members for supporting the ceramic hollow member, and at least one resistor provided on the ceramic hollow member. The ceramic hollow member is deformable accordi...	11/26/1991
5065129	Pressure sensor and method for calibrating pressure sensors A precision pressure sensor in the form of a load cell has a mounting ring closed at one end by an end wall which has axially outwardly facing dead-end holes therein to form sensor beams each having an axially outwardly facing plane surface to which strai...	11/12/1991
5045830	Hydraulic actuating apparatus A hydraulic actuating apparatus includes a cylindrical case having a fitting at one end connectable to a source of pressurized oil, the fitting having a passage for communication with the pressurized oil, a slider slidably carried by the cylindrical case,...	09/03/1991
5004996	Hydraulic actuating apparatus A hydraulic actuating apparatus for sensing hydraulic pressure and producing an output signal representative of the sensed hydraulic pressure includes a base portion, a case, and a variable resistor unit. A slider is movably connected to the variable resi...	04/02/1991
4965697	Solid state pressure sensors Solid state pressure sensors based upon aluminum gallium arsenide devices are disclosed. One embodiment uses a TEGFET as a hydrostatic pressure sensor. By adjustment of the gate voltage, it is possible to vary the operating conditions of the sensor, so as...	10/23/1990
4952904	Adhesion layer for platinum based sensors The marginal adhesion of platinum to silicon nitride is a serious issue in the fabrication of microbridge mass air flow sensors. High temperature stabilization anneals (500°-1000° C.) are necessary to develop the properties and stability necessary for e...	08/28/1990
4947150	Pressure sender A pressure sender is provided with a variable electrical resistance corresponding to a sensed pressure, to be placed in series with a voltage source and a pressure gauge. The pressure sender is diaphragm-actuated, which diaphragm controls the positioning ...	08/07/1990

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Class 338/36 - Fluid- or gas pressure-actuated