Strain Gauge Patents (Class 73/726)
  • Patent number: 10746621
    Abstract: A pressure sensing system includes a pressure transducer, a pressure manifold, and a heater assembly. The pressure transducer is configured to measure pressures at one or more locations of a vehicle engine. The pressure manifold is configured to cover a face of the pressure transducer and provide an interface for transferring air or gas generated at the one or more locations of the vehicle engine. The heater assembly is configured to heat one or more portions of the pressure transducer and one or more portions of the pressure manifold and maintain a temperature of each of the pressure transducer and the pressure manifold above a predetermined temperature level.
    Type: Grant
    Filed: August 10, 2017
    Date of Patent: August 18, 2020
    Assignee: BAE Systems Controls Inc.
    Inventors: William J. Gehm, Raymond J. Boyd, Glenn T. Diego, Robert J. Kunz, Clive A. Morris, Stephen L. Pero
  • Patent number: 10422714
    Abstract: Technologies are generally described that relate to managing and/or generating sensor data. An example method may include receiving output data generated by a pressure sensor. The method may also include determining surface data, indicative of a surface type associated with a force applied to a surface of the pressure sensor, based on the output data. Furthermore, the method may include adjusting the output data based on the surface data to facilitate generating adjusted output data indicative of an adjusted pressure value generated by the pressure sensor.
    Type: Grant
    Filed: December 8, 2015
    Date of Patent: September 24, 2019
    Assignee: EMPIRE TECHNOLOGY DEVELOPMENT LLC
    Inventor: Yang-Won Jung
  • Patent number: 10222281
    Abstract: A force detection apparatus includes a substrate and a force transmission block. The substrate includes: a high-sensitive mesa gauge that is provided on a main surface, extends in a first direction to produce a relatively large change of an electric resistance in accordance with compressive stress, and includes a top surface; a low-sensitive mesa gauge that is provided on the main surface, extends in a second direction to produce a relatively small change of an electric resistance, and includes a top surface; and a mesa lead that is provided on the main surface, extends in a third direction, and includes a top surface. The force transmission block contacts the top surface of the high-sensitive mesa gauge and the top surface of the low-sensitive mesa gauge, and is non-contact with at least a part of the top surface of the mesa lead.
    Type: Grant
    Filed: March 24, 2015
    Date of Patent: March 5, 2019
    Assignee: DENSO CORPORATION
    Inventors: Kentaro Mizuno, Rie Taguchi, Shoji Hashimoto, Yoshie Ohira, Takashi Katsumata, Kouhei Yamaguchi
  • Patent number: 10189707
    Abstract: A sensor device is constructed to maintain a high glass strength to avoid the glass failure at low burst pressure, resulting from the sawing defects located in the critical high stress area of the glass pedestal as one of the materials used for construction of the sensor. This is achieved by forming polished recess structures in the critical high stress areas of the sawing street area. The sensor device is also constructed to have a robust bonding with the die attach material by creating a plurality of micro-posts on the mounting surface of the glass pedestal.
    Type: Grant
    Filed: April 27, 2017
    Date of Patent: January 29, 2019
    Assignee: Continental Automotive Systems, Inc.
    Inventors: Xiaoyi Ding, James Nowicki
  • Patent number: 10100662
    Abstract: A mechanical device is provided for amplifying relative displacement between first and second mechanical structures operatively connected to opposite sides of a bearing. The relative displacement is caused by a thrust load on the bearing. The device includes a first bracket portion attachable to the first mechanical structure. The device further includes a compliant mechanism which extends from the first bracket portion to make contact with the second mechanical structure. The compliant mechanism is configured such that a measurement end of the mechanism moves in response to relative displacement between the first and second mechanical structures. The compliant mechanism is further configured such that the movement of the measurement end amplifies the relative displacement. The device further includes a sensor which measures the mechanically amplified movement of the measurement end.
    Type: Grant
    Filed: September 26, 2016
    Date of Patent: October 16, 2018
    Assignee: ROLLS-ROYCE plc
    Inventor: Stephen Gallimore
  • Patent number: 10054509
    Abstract: There is provided a pressure detection device (10) including: a pressure detection element (21) which receives pressure (P) so as to output a detection signal (Qi) corresponding to the pressure (P); and a processing circuit (30) which processes and outputs the detection signal (Qi) output from the pressure detection element (21), where on a circuit board (40) on which a conductor pattern is formed, an integrated circuit (IC1) including an analog circuit which uses a reference voltage (Vr) set to a predetermined voltage value as an operation reference and converts the detection signal (Qi) into a voltage waveform is mounted, and the processing circuit (30) includes an input circuit 50 which feeds the detection signal (Qi) to the integrated circuit (IC1) and a shield pattern (SHP1) which surrounds the region of at least a part of the input circuit (50) and to which the reference voltage (Vr) is applied.
    Type: Grant
    Filed: March 25, 2015
    Date of Patent: August 21, 2018
    Assignees: CITIZEN FINEDEVICE CO., LTD., CITIZEN WATCH CO., LTD.
    Inventors: Rikoku Nakamura, Masanori Yomoyama, Hitoshi Satsuta
  • Patent number: 10041851
    Abstract: Pressure sensors and their methods of manufacturing, where the pressure sensors have a small, thin form factor and may include features designed to improve manufacturability and where the method of manufacturing may improve yield and reduce overall costs.
    Type: Grant
    Filed: August 3, 2016
    Date of Patent: August 7, 2018
    Assignee: SILICON MICROSTRUCTURES, INC.
    Inventors: Holger Doering, Stephen C. Terry, Justin Gaynor, Omar Abed, Fernando Alfaro
  • Patent number: 9941223
    Abstract: Techniques for providing a tamper mechanism for semiconductor devices are disclosed herein. The techniques include, for example, providing at least one die and at least one strain gauge, orienting the at least one strain gauge to the die, forming an encapsulated semiconductor device by encapsulating the die and each strain gauge within a mold compound to maintain respective orientation, and measuring an initial strain value for the at least one strain gauge after forming the encapsulated semiconductor device.
    Type: Grant
    Filed: August 7, 2015
    Date of Patent: April 10, 2018
    Assignee: THE CHARLES STARK DRAPER LABORATORY, INC.
    Inventor: Maurice S. Karpman
  • Patent number: 9903789
    Abstract: A pressure sensor includes a diaphragm, a coupling portion coupled to the diaphragm, and two pressure receiving elements. Each pressure receiving element outputs an output signal that changes according to the temperature and the pressure applied to a pressure receiving surface and has an output characteristic that represents the relationship of the output signal to the pressure and the temperature. The two pressure receiving elements have the same output characteristics. The pressure receiving surface of one of the two pressure receiving elements is connected to the diaphragm through the coupling portion, and the pressure receiving surface of the other pressure receiving element is disconnected from the diaphragm. The pressure sensor outputs a signal that is in accordance with the difference between voltages of the two pressure receiving elements.
    Type: Grant
    Filed: October 14, 2015
    Date of Patent: February 27, 2018
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yoshiharu Takemoto, Yuji Nishibe, Kentaro Mizuno, Shoji Hashimoto
  • Patent number: 9702777
    Abstract: A detector is provided by coating a fluid conductive material on a flat portion of a diaphragm. The detector includes: a resistor element; resistor element electrodes, which are overlapped and connected with mutually opposed parts of the resistor element; and a linear conductor connected with the resistor element electrodes. The resistor element electrodes each include: a linear portion having a linear inner side facing an inner side of paired one of the resistor element electrodes; and peripheral portions defined at both ends of the linear portion, at least one of the peripheral portions being connected with the linear conductor. All of the linear portions are arranged so that inner sides are arranged mutually in parallel. The resistor element is connected with the linear portion. The peripheral portions are exposed without being connected with the resistor element.
    Type: Grant
    Filed: January 12, 2016
    Date of Patent: July 11, 2017
    Assignee: NAGANO KEIKI CO., LTD.
    Inventors: Kaori Miyashita, Eiji Takeda, Yuuji Nagai, Shinya Matsumura
  • Patent number: 9676618
    Abstract: A sensor device is constructed to maintain a high glass strength to avoid the glass failure at low burst pressure, resulting from the sawing defects located in the critical high stress area of the glass pedestal as one of the materials used for construction of the sensor. This is achieved by forming polished recess structures in the critical high stress areas of the sawing street area. The sensor device is also constructed to have a robust bonding with the die attach material by creating a plurality of micro-posts on the mounting surface of the glass pedestal.
    Type: Grant
    Filed: November 3, 2015
    Date of Patent: June 13, 2017
    Assignee: Continental Automotive Systems, Inc.
    Inventors: Xiaoyi Ding, James Nowicki
  • Patent number: 9417142
    Abstract: A low-cost, compact, high-precision axial force sensor is provided. The axial force sensor includes a pair of parallel pressing plates and a strain gauge sandwiched therebetween. The strain gauge includes a plurality of strain-sensitive resistive elements around its periphery, and is provided with a spacer that transmits a pressing force from the pressing plates to some of the strain-sensitive elements but blocks the pressing force to the rest of the strain-sensitive elements. The output signal of the strain-sensitive elements blocked from the pressing force provide an accurate baseline to compare the output signal of the strain-elements subjected to the pressing force. The spacer has a uniform pattern of open and closed portions. On the strain gauge, the strain-sensitive elements are provided at both the open and closed portions of the spacer.
    Type: Grant
    Filed: April 30, 2013
    Date of Patent: August 16, 2016
    Assignee: A&D Company, Limited
    Inventors: Tatsuo Ichige, Masaaki Banno, Tomoyuki Ishimori
  • Publication number: 20150128714
    Abstract: A pressure transducer for a hammer union installation includes a lower body capable of withstanding the stresses of the hammer union installation. The lower body includes a cylindrical wall, a diaphragm, and a pressure port for exposing the diaphragm to pressure. The pressure transducer also includes one or more transducer elements mounted on the diaphragm that are operable to provide a signal related to pressure. A cap is received by the cylindrical wall and is slidable along the wall. The cap includes comprising an antenna for transmitting the signal. A spring is arranged in the lower body for dampening forces applied to the cap.
    Type: Application
    Filed: October 20, 2014
    Publication date: May 14, 2015
    Inventor: Robert Austin Moss
  • Publication number: 20150088008
    Abstract: According to one embodiment, a pressure sensor includes a support, a film unit supported by the support, having an upper surface, and capable of being deformed, and a first sensing element provided on the upper surface. The first sensing element includes a first magnetic layer, a second magnetic layer provided apart from the first magnetic layer and a first intermediate unit including a first intermediate layer including a portion provided between the first and second magnetic layers. The first magnetic layer extends in a first direction parallel to the upper surface, and a first major axis length of the first magnetic layer is longer than a first minor axis length. The second magnetic layer extends in a second direction parallel to the upper surface and crossing the first direction, and a second major axis length of the second magnetic layer is longer than a second minor axis length.
    Type: Application
    Filed: August 27, 2014
    Publication date: March 26, 2015
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Yoshihiko FUJI, Hideaki FUKUZAWA, Michiko HARA, Tomohiko NAGATA, Akio HORI, Shiori KAJI, Yoshihiro HIGASHI, Akiko YUZAWA
  • Patent number: 8984949
    Abstract: A pressure sensor measuring element for a pressure sensor operates to detect pressure in a combustion space of an internal combustion engine. The pressure sensor measuring element includes a separating diaphragm, a plunger for the transmission of deflections of the separating diaphragm to a force measuring element, and with a sleeve which receives the plunger. The sleeve is closed by the separating diaphragm at a first end intended to face the combustion space and is designed to hold the force measuring element at the opposite second end. Accordingly, the pressure sensor measuring element can be produced more cost-effectively. Furthermore, the plunger can be produced in one piece with the separating diaphragm as a diaphragm/plunger unit, and the sleeve and the diaphragm/plunger unit can be formed from the same metal material.
    Type: Grant
    Filed: June 10, 2010
    Date of Patent: March 24, 2015
    Assignee: Trafag AG
    Inventors: Ulrich Staiger, Peter Dias-Lalcaca, Peter Hauri, Dieter Zeisel
  • Patent number: 8943896
    Abstract: A pressure transducer using a ceramic diaphragm which is not easily damaged so that there is no risk of leakage of a target medium to be measured, having a superior mass-production capability and a reduced volume and enabling low-price by simplifying a flexible cable and a printed circuit board (PCB) to connect the transducer and a signal processing chip. The pressure transducer includes the ceramic diaphragm formed as a rectangular planar ceramic diaphragm and having a surface having formed thereon a pattern made of an electrically conductive material and strain gages; a base plate configured to face the surface of the ceramic diaphragm having formed thereon the pattern; and an adhesive layer configured to be formed along edges of a contacting surface of the ceramic diaphragm and the base plate so as to bond the ceramic diaphragm and the base plate and form a space for the strain gages.
    Type: Grant
    Filed: October 10, 2012
    Date of Patent: February 3, 2015
    Assignee: Auto Industrial Co., Ltd.
    Inventors: Kyong M. Park, Si-Dong Kim
  • Publication number: 20150000416
    Abstract: A fluidic chip device configured for processing a fluid, wherein the fluidic chip device comprises a plurality of layers laminated to one another, wherein at least a part of the layers comprises a patterned section of an alternating sequence of bars and fluidic channels for conducting the fluid under pressure, the patterned section being configured for being displaceable in response to the pressure, and a pressure detector responding to the displacement of the patterned section by generating a detector signal being indicative of a value of the pressure.
    Type: Application
    Filed: September 15, 2011
    Publication date: January 1, 2015
    Applicant: Agilent Technologies, Inc.
    Inventors: Martin Baeuerle, Konstantin Choikhet
  • Patent number: 8863578
    Abstract: A pressure gauge mounted to a pump or a back pressure regulator in an HPLC, SFC, or SFE system provides improved solvent exchange and improved measurement precision. A through hole having an inside diameter of 1.0 mm is made in a hexagonal member similar in shape to a pipe joint. A part of the hexagonal member is cut away to form a flat surface such that the distance to the outside periphery of the through hole is 0.5 mm to serve as a strain-measurement strain gauge attaching surface. One strain gauge is attached to the center of the strain-measurement strain gauge attaching surface, and two strain gauges are attached for temperature correction, one on the same surface as the strain-measurement strain gauge attaching surface and the other on an outside surface of the hexagonal member.
    Type: Grant
    Filed: September 29, 2011
    Date of Patent: October 21, 2014
    Assignee: JASCO Corporation
    Inventors: Takeshi Kanomata, Hiroaki Yamura
  • Publication number: 20140260649
    Abstract: A pressure sensor 100 may comprise a nylon socket 200, an upper PCB 320, a lower PCB 340, and a hex housing 400. The nylon socket 200 may include co-molded electrical pin conductors 230a, 230b, 230c extending axially from electrical connectors 240a, 240b, 240c defined within a top end of the nylon socket 200 to a bottom end of the nylon socket 200. The upper PCB 320 may have contacts configured to contact the electrical pin conductors 230a, 230b, 230c. The lower PCB 340 may be electrically coupled to the upper PCB 320 and to strain gauges 355 coupled to a diaphragm 360. The hex housing 440 may have an interior axial port 430 extending from a bottom of said hex housing 400 to a counterbore 440 for holding the diaphragm 360, thereby exposing a first side of said diaphragm 360 to the fluid within the axial port 430.
    Type: Application
    Filed: March 17, 2014
    Publication date: September 18, 2014
    Inventor: Steven Petrucelli
  • Publication number: 20140096615
    Abstract: A pressure transducer using a ceramic diaphragm which is not easily damaged so that there is no risk of leakage of a target medium to be measured, having a superior mass-production capability and a reduced volume and enabling low-price by simplifying a flexible cable and a printed circuit board (PCB) to connect the transducer and a signal processing chip. The pressure transducer includes the ceramic diaphragm formed as a rectangular planar ceramic diaphragm and having a surface having formed thereon a pattern made of an electrically conductive material and strain gages; a base plate configured to face the surface of the ceramic diaphragm having formed thereon the pattern; and an adhesive layer configured to be formed along edges of a contacting surface of the ceramic diaphragm and the base plate so as to bond the ceramic diaphragm and the base plate and form a space for the strain gages.
    Type: Application
    Filed: October 10, 2012
    Publication date: April 10, 2014
    Inventors: Kyong M. Park, Si-Dong Kim
  • Patent number: 8596133
    Abstract: A vertical pressure sensor having a fluid deforming pressure application unit, a sensor housing, a socket, a circuit board, a plurality of electrode terminals, and a plurality of electrical signal transmitting electrode rods. The pressure application unit includes a diaphragm to which strain gauges are attached. The socket surrounds a circumference of the diaphragm of the pressure application unit and includes a receiving passageway. The plurality of electrode terminals are provided at the upper end of the socket in a Wheatstone bridge circuit pattern. The plurality of electrode terminals protrude from the upper end of the socket to constitute an electrode tip. The circuit board connects to the plurality of electrode terminals to convert a pressure value into an electrical signal, and the plurality of electrode rods are connected to the circuit board to transmit the electrical signal outside.
    Type: Grant
    Filed: April 13, 2012
    Date of Patent: December 3, 2013
    Assignee: Tyco Electronics Amp Korea Ltd.
    Inventors: Chul-Sub Lee, Young-Deok Kim, Eul-Chul Byeon, Yong Hun Lee
  • Publication number: 20130312532
    Abstract: A pressure transducer comprising a corrosion resistant metal diaphragm, having an active region, and capable of deflecting when a force is applied to the diaphragm; and a piezoresistive silicon-on-insulator sensor array disposed on a single substrate, the substrate secured to the diaphragm, the sensor array having a first outer sensor near an edge of the diaphragm at a first location and on the active region, a second outer sensor near an edge of the diaphragm at a second location and on the active region, and at least one center sensor substantially overlying a center of the diaphragm, the sensors connected in a bridge array to provide an output voltage proportional to the force applied to the diaphragm. The sensors are dielectrically isolated from the substrate.
    Type: Application
    Filed: July 29, 2013
    Publication date: November 28, 2013
    Applicant: KULITE SEMICONDUCTOR PRODUCTS, INC.
    Inventor: NORA KURTZ
  • Publication number: 20130170669
    Abstract: According to one embodiment, a strain and pressure sensing device includes a semiconductor circuit unit and a sensing unit. The semiconductor circuit unit includes a semiconductor substrate and a transistor. The transistor is provided on a semiconductor substrate. The sensing unit is provided on the semiconductor circuit unit, and has space and non-space portions. The non-space portion is juxtaposed with the space portion. The sensing unit further includes a movable beam, a strain sensing element unit, and first and second buried interconnects. The movable beam has fixed and movable portions, and includes first and second interconnect layers. The fixed portion is fixed to the non-space portion. The movable portion is separated from the transistor and extends from the fixed portion into the space portion. The strain sensing element unit is fixed to the movable portion. The first and second buried interconnects are provided in the non-space portion.
    Type: Application
    Filed: June 28, 2012
    Publication date: July 4, 2013
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Hideaki FUKUZAWA, Tatsuya Ohguro, Akihiro Kojima, Yoshiaki Sugizaki, Mariko Takayanagi, Yoshihiko Fuji, Akio Hori, Michiko Hara
  • Patent number: 8393223
    Abstract: A pressure sensor micromachined by using microelectronics technologies includes a cavity hermetically sealed on one side by a silicon substrate and on the other side by a diaphragm that is configured to be formed under the effect of the pressure outside the cavity. The sensor includes at least one resistance strain gage fastened to the diaphragm and has resistance that varies as a function of the deformation of the diaphragm. The diaphragm is fastened to the resistance strain gages. The gages are located inside the sealed cavity. The diaphragm has an insulting layer deposited on a sacrificial layer and may cover integrated measurement circuits in the silicon substrate.
    Type: Grant
    Filed: January 26, 2007
    Date of Patent: March 12, 2013
    Assignee: Commissariat a l'Energie Atomique
    Inventors: Gilles Delapierre, Hubert Grange, Patrice Rey
  • Patent number: 8375798
    Abstract: An external pressure measuring device having a base and a tubing system bent with various radii. Pressure inside the bent tubing causes the tubing to move in such a way that can be measured and can provide an indication of internal pressure.
    Type: Grant
    Filed: June 16, 2009
    Date of Patent: February 19, 2013
    Inventor: Robert C. Anderson
  • Patent number: 8359928
    Abstract: A pressure sensor of the present invention includes a substrate inside which a reference pressure chamber is formed, a closing body filled in a through-hole formed in the substrate such that the closing body penetrates through a portion between the surface of the substrate and the reference pressure chamber, and hermetically closes the reference pressure chamber, and a strain gauge provided inside the substrate between the surface of the substrate and the reference pressure chamber, and the electric resistance thereof being capable of changing by strain deformation of the substrate.
    Type: Grant
    Filed: March 10, 2011
    Date of Patent: January 29, 2013
    Assignee: Rohm Co., Ltd.
    Inventor: Goro Nakatani
  • Publication number: 20120291560
    Abstract: A pressure transducer comprising a corrosion resistant metal diaphragm, having an active region, and capable of deflecting when a force is applied to the diaphragm; and a piezoresistive silicon-on-insulator sensor array disposed on a single substrate, the substrate secured to the diaphragm, the sensor array having a first outer sensor near an edge of the diaphragm at a first location and on the active region, a second outer sensor near an edge of the diaphragm at a second location and on the active region, and at least one center sensor substantially overlying a center of the diaphragm, the sensors connected in a bridge array to provide an output voltage proportional to the force applied to the diaphragm. The sensors are dielectrically isolated from the substrate.
    Type: Application
    Filed: August 6, 2012
    Publication date: November 22, 2012
    Applicant: Kulite Semiconductor Products, Inc.
    Inventors: ANTHONY D. KURTZ, Nora Kurtz
  • Patent number: 8297126
    Abstract: A high pressure tank that has particular application for storing hydrogen gas on a vehicle for a fuel cell system. The tank includes a gas tight inner liner layer and a fiber bundle outer composite structural layer. A first strain gauge is provided in the outer layer and a second strain gauge is provided in the inner liner layer both proximate a transition between the layers. The strain gauges are calibrated relative to each other to identify the pressure where the inner liner layer begins to shrink and separate from the outer composite layer.
    Type: Grant
    Filed: June 9, 2010
    Date of Patent: October 30, 2012
    Assignee: GM Global Technology Operations LLC
    Inventor: Christoph Kuebel
  • Patent number: 8291769
    Abstract: A multipurpose transducer for an appliance using water, like a washing machine, a dishwasher or a hot-water tank converts physical parameters like water temperature, cleanness and pressure in said appliance into electric signals. It is provided with a temperature transducer (TT), a turbidity transducer (TurbT) and a pressure transducer (PT), all of them being fixed on an electrically insulating mounting support (MS). The pressure transducer (PT) is made as an uncompensated strain gauge in a thick film technology. The temperature transducer (TT) made as a termistor is also manufactured in the thick film technology. The multipurpose transducer (MPT) of the invention requires less work steps to be manufactured, mounted and connected in the appliance of said type than earlier transducers.
    Type: Grant
    Filed: December 29, 2008
    Date of Patent: October 23, 2012
    Assignee: Illinois Tool Works Inc.
    Inventor: Klemen Dobravec
  • Publication number: 20120240685
    Abstract: A gauge includes a housing and a fitting having an inlet, an internal flow path, and an outlet. A sensor is in fluidic communication with the internal flow path and measures a characteristic of a fluid in the flow path. A control unit is in electrical communication with the pressure sensor, receives an output from the pressure sensor and generates a command based on the output received. A stepper motor has a rotor shaft with an indicator needle operatively connected thereto, and is in electrical communication with the control unit. A power supply is in electrical communication with the pressure sensor, the motor and the control unit for supplying power thereto. The control unit transmits the command to the stepper motor, which receives the command from the control unit and drives the rotor shaft according to the command, displaying the sensed characteristic via the needle.
    Type: Application
    Filed: March 21, 2011
    Publication date: September 27, 2012
    Inventor: Bryan Alfano
  • Patent number: 8191426
    Abstract: A high temperature thin film strain gage sensor capable of functioning at temperatures above 1400° C. The sensor contains a substrate, a nanocomposite film comprised of an indium tin oxide alloy, zinc oxide doped with alumina or other oxide semiconductor and a refractory metal selected from the group consisting of Pt, Pd, Rh, Ni, W, Ir, NiCrAlY and NiCoCrAlY deposited onto the substrate to form an active strain element. The strain element being responsive to an applied force.
    Type: Grant
    Filed: June 5, 2008
    Date of Patent: June 5, 2012
    Assignee: Board of Governors for Higher Education, State of Rhode Island and Providence Plantations
    Inventors: Otto J. Gregory, Ximing Chen
  • Patent number: 8182435
    Abstract: An implantable intraocular pressure sensor system has a sealed geometric shape with an internal pressure at a first value. A strain gauge wire is embedded in a surface of the sealed geometric shape. When the surface is deflected by intraocular pressure, a measured resistance of the strain gauge wire indicates the intraocular pressure. The system also has a processor coupled to a power source and memory. The processor is configured to read the measured resistance and write values corresponding to intraocular pressure to the memory.
    Type: Grant
    Filed: May 4, 2009
    Date of Patent: May 22, 2012
    Assignee: Alcon Research, Ltd.
    Inventors: Bruno Dacquay, Matthew J. A. Rickard
  • Publication number: 20120082569
    Abstract: A pressure gauge mounted to a pump or a back pressure regulator in an HPLC, SFC, or SFE system provides improved solvent exchange and improved measurement precision. A through hole having an inside diameter of 1.0 mm is made in a hexagonal member similar in shape to a pipe joint. A part of the hexagonal member is cut away to form a flat surface such that the distance to the outside periphery of the through hole is 0.5 mm to serve as a strain-measurement strain gauge attaching surface. One strain gauge is attached to the center of the strain-measurement strain gauge attaching surface, and two strain gauges are attached for temperature correction, one on the same surface as the strain-measurement strain gauge attaching surface and the other on an outside surface of the hexagonal member.
    Type: Application
    Filed: September 29, 2011
    Publication date: April 5, 2012
    Applicant: JASCO CORPORATION
    Inventors: Takeshi Kanomata, Hiroaki Yamura
  • Patent number: 8127619
    Abstract: A semiconductor device includes a first sensor element in a first branch of a Wheatstone bridge and a second sensor element in a second branch of the Wheatstone bridge. The semiconductor device includes a first reference element in the first branch and a second reference element in the second branch. The semiconductor device includes a circuit configured to switch the first sensor element to the second branch and the second sensor element to the first branch.
    Type: Grant
    Filed: March 2, 2011
    Date of Patent: March 6, 2012
    Assignee: Infineon Technologies AG
    Inventor: Dirk Hammerschmidt
  • Patent number: 8033009
    Abstract: There is provided a method for producing a force sensor including: a force sensor chip; and an attenuator, in which the force sensor chip and the attenuator are joined at joint portions with a glass layer sandwiched therebetween. The method includes: a film forming step in which a glass film as the glass layer is formed on regions of the attenuator containing the joint portions or on regions of the force sensor chip containing the joint portions; and an anodic bonding step in which the force sensor chip and the attenuator are stacked as a stacked body in close contact with each other at the joint portions, and the glass film and the force sensor chip, or the glass film and the attenuator, are joined.
    Type: Grant
    Filed: August 23, 2007
    Date of Patent: October 11, 2011
    Assignee: Honda Motor Co., Ltd
    Inventors: Nariaki Kuriyama, Jun Sasahara, Tadahiro Kubota, Daisuke Okamura, Takeshi Ohsato
  • Patent number: 8033804
    Abstract: A device (20) comprising a pressure measurement surface (28) functionally attached to a proof body (22) and a rigid component (30), functionally attached to the proof body (22), the measurement surface (28) forming a surface of the rigid component (30). In addition, the device comprises a support (38), functionally separated from the proof body (22), of generally annular shape, housing the rigid component (30) and a flexible mass (40) radially inserted between the support (38) and the rigid component (30) such that the contour of the measurement surface (28) is bounded by the flexible mass (40), this flexible mass (40) adhering to the support (38) and to the rigid component (30).
    Type: Grant
    Filed: June 24, 2009
    Date of Patent: October 11, 2011
    Assignee: Michelin Recherche et Technique S.A.
    Inventors: Gérard Buvat, Henri Hinc, Frederic Pialot
  • Patent number: 8001844
    Abstract: A high-temperature pressure sensor element for power units includes a substrate, in which an interior space is developed, a deformable membrane, which separates the interior space from the exterior space in order to deform when the exterior pressure changes, and a strain measuring element, which is arranged on the membrane, for measuring the deformation of the membrane. The substrate, the membrane, and the strain measuring element are manufactured from the same high-temperature-stable material, such as an alloy. By way of example a nickel base alloy may be used. A component for a power unit, such as a turbine blade for an airplane or rocket engine, includes an integrated high-temperature pressure sensor element of this type.
    Type: Grant
    Filed: March 1, 2007
    Date of Patent: August 23, 2011
    Assignee: Astrium GmbH
    Inventors: Soeren Fricke, Gerhard Mueller, Alois Friedberger, Eberhard Rose, Thomas Ziemann, Ulrich Schmid, Dimitri Telitschkin, Stefan Ziegenhagen
  • Patent number: 7954994
    Abstract: A combined pressure and temperature sensor for recording the pressure and the temperature of a medium. The combined pressure and temperature sensor includes a sensor element in which at least one channel is developed for accommodating a temperature sensor and at least one channel is developed for recording a pressure. The at least one channel, for recording a pressure, opens out under a pressure sensor. The at least one channel for the temperature sensor runs centrically in the sensor element.
    Type: Grant
    Filed: November 9, 2006
    Date of Patent: June 7, 2011
    Assignee: Robert Bosch GmbH
    Inventors: Stefan Warth, Oliver Stoll, Christian Roesser, Markus Ledermann, Joerg Engelhardt
  • Patent number: 7926353
    Abstract: A semiconductor device includes a first sensor element in a first branch of a Wheatstone bridge and a second sensor element in a second branch of the Wheatstone bridge. The semiconductor device includes a first reference element in the first branch and a second reference element in the second branch. The semiconductor device includes a circuit configured to switch the first sensor element to the second branch and the second sensor element to the first branch.
    Type: Grant
    Filed: January 16, 2009
    Date of Patent: April 19, 2011
    Assignee: Infineon Technologies AG
    Inventor: Dirk Hammerschmidt
  • Patent number: 7918137
    Abstract: There is described a temperature compensation scheme for a pressure sensitive metal diaphragm transducer. The transducer employs a Wheatstone bridge fabricated from p-type piezoresistors. The Wheatstone bridge is glassed directly onto the metal diaphragm. As the temperature of operation increases, the diaphragm exhibits a temperature variation of the Modulus of Elasticity. The Modulus of the metal diaphragm decreases with increasing temperature. Because of this, the same pressure applied to the metal diaphragm causes it to deflect further, which in turns causes increased strain applied to the bridge. Because of this effect, the sensitivity of the transducer increases with increasing temperature. A resistor is now placed in series with the Wheatstone bridge. The resistor is in series with the biasing voltage and because the TCS of the diaphragm is of an opposite sign, the series resistor has an even higher TCR in series with the bridge.
    Type: Grant
    Filed: February 6, 2009
    Date of Patent: April 5, 2011
    Assignee: Kulite Semiconductor Products, Inc.
    Inventors: Anthony D. Kurtz, Joseph Van DeWeert, Boaz Kochman
  • Patent number: 7861596
    Abstract: An airflow detecting system includes a tubular structure having an inner surface defining an interior of the tubular structure, one open end and an opposite open end. The tubular structure is configured to receive and expel air through both the one end and the opposite end. The system further includes a flap connected to the inner surface of the tubular structure by a hinge. The flap is configured to impede airflow within the interior of the tubular structure upon the application of differential pressure across the two ends of the tubular structure. The system further includes a device attached to the flap in a position in which the device spans the hinge. The device is configured to measure a parameter associated with the movement of the flap in response to airflow within the interior of the tubular structure. Other embodiments and methods are further disclosed.
    Type: Grant
    Filed: January 28, 2009
    Date of Patent: January 4, 2011
    Assignee: American Power Conversion Corporation
    Inventor: John H. Bean, Jr.
  • Patent number: 7856886
    Abstract: A pressure sensor includes: a diaphragm having a pressure-receiving portion receiving a pressure and a thick portion adjacent to the pressure-receiving portion; and a pressure sensitive element having a first and a second ends facing each other. The pressure sensitive element extends in a direction intersecting the thick portion and the first end of the pressure sensitive element is bonded to a pressure-receiving surface of the pressure-receiving portion, and a central portion of a portion at which the pressure-receiving portion and the first end are bonded is positioned at a side closer to the second end of the pressure sensitive element than a center of the pressure-receiving portion.
    Type: Grant
    Filed: April 21, 2008
    Date of Patent: December 28, 2010
    Assignee: Epson Toyocom Corporation
    Inventor: Toshinobu Sakurai
  • Publication number: 20100319461
    Abstract: A multipurpose transducer for an appliance using water, like a washing machine, a dishwasher or a hot-water tank converts physical parameters like water temperature, cleanness and pressure in said appliance into electric signals. It is provided with a temperature transducer (TT), a turbidity transducer (TurbT) and a pressure transducer (PT), all of them being fixed on an electrically insulating mounting support (MS). The pressure transducer (PT) is made as an uncompensated strain gauge in a thick film technology. The temperature transducer (TT) made as a termistor is also manufactured in the thick film technology. The multipurpose transducer (MPT) of the invention requires less work steps to be manufactured, mounted and connected in the appliance of said type than earlier transducers.
    Type: Application
    Filed: December 29, 2008
    Publication date: December 23, 2010
    Applicant: ILLINOIS TOOL WORKS INC.
    Inventor: Klemen Dobravec
  • Patent number: 7823456
    Abstract: A pressure sensor is provided with a carrier (2), which in an inner region includes a membrane (4) on which at least one first measurement element (R1?) for detecting a pressure impingement of the membrane (4) is arranged. Additionally, at least one second measurement element (R3?) for detecting a pressure impingement of the membrane (4) is arranged on the membrane. The first measurement element (R1?) and the second measurement element (R3?) are arranged distanced differently far from the edge of the membrane. The output signals of the first and the second measurement element (R1?, R3?) are evaluated together in a manner such that the two measurement elements (R1?, R3?) detect a differential pressure acting on the membrane (4), and thereby compensate the influence of the system pressure acting on both sides of the membrane (4).
    Type: Grant
    Filed: March 17, 2009
    Date of Patent: November 2, 2010
    Assignee: Grundfos a/s
    Inventors: Jens Peter Krog, Casper Pedersen, Carsten Christensen
  • Publication number: 20100217541
    Abstract: An apparatus for measuring a static pressure inside a component is provided. The apparatus includes a housing coupled to the component, the housing includes a moveable component disposed therein, the moveable component operably extendable into the component and retractable from the component in response to the static pressure inside the component: and a sensor disposed in the housing and thermally protected from fluids inside the component, the sensor is configured to enable the determination of the static pressure inside the component.
    Type: Application
    Filed: February 23, 2009
    Publication date: August 26, 2010
    Applicant: GENERAL ELECTRIC COMPANY
    Inventor: James Anthony West
  • Patent number: 7775117
    Abstract: A combined wet-wet differential transducer and a gage pressure transducer located in the same housing, comprising a semiconductor chip which comprises a gage sensor chip on one section and a differential sensor chip on a second section. Lach sensor chip has a Wheatstone bridge comprising piezoresistors and is responsive to an applied pressure. The gage chip and the differential chip are placed in a header having a front section and a back section adapted to receive a first and second pressure, respectively. A central section adjoins the front and back sections to form an H shaped header. The sensors are in communication with first and second pressure ports such that the absolute sensor provides an output indicative of a pressure applied to a first port and the differential sensor provides an output indicative of the pressure difference between the first and second pressure ports.
    Type: Grant
    Filed: December 11, 2008
    Date of Patent: August 17, 2010
    Assignee: Kulite Semiconductor Products, Inc.
    Inventor: Anthony D. Kurtz
  • Publication number: 20100186517
    Abstract: An airflow detecting system includes a tubular structure having an inner surface defining an interior of the tubular structure, one open end and an opposite open end. The tubular structure is configured to receive and expel air through both the one end and the opposite end. The system further includes a flap connected to the inner surface of the tubular structure by a hinge. The flap is configured to impede airflow within the interior of the tubular structure upon the application of differential pressure across the two ends of the tubular structure. The system further includes a device attached to the flap in a position in which the device spans the hinge. The device is configured to measure a parameter associated with the movement of the flap in response to airflow within the interior of the tubular structure. Other embodiments and methods are further disclosed.
    Type: Application
    Filed: January 28, 2009
    Publication date: July 29, 2010
    Applicant: AMERICAN POWER CONVERSION CORPORATION
    Inventor: John H. Bean, JR.
  • Patent number: 7748276
    Abstract: A manufacturing method of a pressure sensor that includes a pressure detector having a bottomed cylindrical member with a bottom including a thin-wall portion and a strain detecting mechanism provided on one side of the bottom for detecting a strain of the bottom and a pressure-introducing joint for introducing the fluid to be measured into the bottomed cylindrical member is provided. The method includes: first welding for butt-welding an end of the cylindrical portion of the bottomed cylindrical member and an end of the pressure-introducing joint; and second welding for welding the pressure-introducing joint in parallel to a first weld bead formed by the first welding.
    Type: Grant
    Filed: September 5, 2008
    Date of Patent: July 6, 2010
    Assignee: Nagano Keiki Co., Ltd.
    Inventors: Yoshikazu Kaneko, Hiroshi Kodama, Hiroshi Wakabayashi
  • Publication number: 20100099008
    Abstract: A pressure sensor adapted to provide a high resolution at a low pressure and a high pressure of an operating range is provided. The pressure sensor includes a body having an interface sur ace, a membrane sealingly disposed in the cavity adjacent the interface surface, and a sensing element in communication with the membrane. A fuel cell system including the pressure sensor is also provided.
    Type: Application
    Filed: October 21, 2008
    Publication date: April 22, 2010
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
    Inventor: Harald Schlag
  • Publication number: 20100031752
    Abstract: The invention relates to pressure sensors that are micromachined using microelectronics technologies. The sensor provided by the invention comprises a cavity (V) hermetically sealed on one side by a silicon substrate (40) and on the other side by a diaphragm (58) that can be formed under the effect of the pressure outside the cavity, the sensor having at least one resistance strain gage (54, 56) fastened to the diaphragm and having resistance that varies as a function of the deformation of the diaphragm. The diaphragm, preferably made of silicon nitride, is fastened to the resistance strain gages. The gages are located beneath the diaphragm inside the sealed cavity (V). It is not necessary to recess the substrate to produce the cavity: the diaphragm is formed by depositing an insulting layer on a sacrificial layer, for example made of a polyamide; it may cover integrated measurement circuits in the silicon substrate.
    Type: Application
    Filed: January 26, 2007
    Publication date: February 11, 2010
    Inventors: Gilles Delapierre, Hubert Grange, Patrice Rey