Detail Of Resistive Sensor Patents (Class 374/185)
  • Publication number: 20020136263
    Abstract: A temperature sensing probe assembly (2) for use with a heater (4), such as a radiant electric heater, comprises a tube (16) of ceramic material secured to a metal support bracket (20). The support bracket (20) is adapted to be secured to the heater (4) at a peripheral region (8A) of the heater and such that the tube (16) extends at least partly across the heater. The tube (16) has received therein at a first end (40) thereof an electrical component (38) having an electrical parameter which changes as a function of temperature. The component (38) has electrical leads (42, 44) electrically insulated from each other and extending along the tube and from the tube at a second end thereof. The support bracket (20) incorporates a tubular metal portion (28) which securely receives the tube (16) therein.
    Type: Application
    Filed: March 19, 2002
    Publication date: September 26, 2002
    Inventor: Peter Ravenscroft Wilkins
  • Publication number: 20020131477
    Abstract: An insulator 6 for holding electrode wires 4 is provided between a thermistor element 3 and a sheathed pin 5 which is a wiring, and the electrode wires 4, which are inserted into hole portions 6a of the insulator 6, are held therein not bonded to the insulator, whereby the vibration resistance of the electrode wires of the thermistor element is improved so that breaking of the electrode wires is prevented.
    Type: Application
    Filed: March 11, 2002
    Publication date: September 19, 2002
    Inventor: Atsushi Kurano
  • Patent number: 6431750
    Abstract: A lightweight elongate flexible temperature probe includes several temperature sensors embedded inside multiple layers of a thin film polyimide or polyester in which two of the layers are thin film copper etched to form conductors to the sensors. The conductors are in abutting electrical contact with the sensors.
    Type: Grant
    Filed: December 14, 1999
    Date of Patent: August 13, 2002
    Assignee: Sierra Lobo, Inc.
    Inventors: Mark S. Haberbusch, Marian Felder, Alan J. Chmiel
  • Patent number: 6419388
    Abstract: A medical thermometer for measuring the temperature of a patient comprises a metal tip (2) with an outer contact surface (3) for contacting the tissue of a patient. A temperature sensor (4) mounted within the metal tip (2) is used to produce a signal which represents the temperature of the metal tip (2). The temperature is displayed on a display (5). The metal tip surrounds a substantially hollow cavity (8) and is of a length (L) which is at least three times, preferably five times larger than the diameter of the metal tip (2). The metal tip (2) is free from additional heating means.
    Type: Grant
    Filed: August 27, 2001
    Date of Patent: July 16, 2002
    Assignee: Microlife Intellectual Property GmbH
    Inventor: Yung Ku Lee
  • Patent number: 6421626
    Abstract: The present invention is a temperature sensor which is based on the actual temperature coefficients of a device in the circuit, rather than a predetermined threshold voltage that varies across different devices. This temperature sensor includes a circuit which determines the temperature of a device. More particularly, CMOS circuit is provided which uses a current source to generate charge and discharge voltages applied to a capacitor. These voltages are dependent on the temperature coefficient of a resistor in the current source. The charge and discharge times are then used to determine a frequency which is dependent on the temperature coefficient of the resistor. Thus, the temperature is sensed based on the output frequency of the circuit. Additionally, the present invention includes a mechanism which allows the temperature sensor to be activated or deactivated as needed.
    Type: Grant
    Filed: November 6, 1998
    Date of Patent: July 16, 2002
    Assignee: STMicroelectronics, Inc..
    Inventor: Rong Yin
  • Publication number: 20020090019
    Abstract: A temperature sensor is provided which includes a measurement element, which changes its electrical resistance when the temperature changes. The measurement element is located in a protective sleeve, which may be provided with openings. A terminal-side area of the measurement element including its terminals and the surrounding area of the protective sleeve is potted in a temperature-resistant, electrically nonconductive material. The terminals are connected directly to two conductors within a jacketed tube.
    Type: Application
    Filed: December 11, 2001
    Publication date: July 11, 2002
    Inventors: H. -Arno Marto, Heiner Lehmann, Erich Berdel
  • Publication number: 20020090020
    Abstract: A temperature detecting structure for electronic thermometer includes a thermometer shell having a tubular front extension end, two conductors arranged in parallel in the shell, a solid temperature tip fixedly fastened to the thermometer shell to close its tubular front extension end, and a chip connected to the conductors and fixedly mounted inside the solid temperature tip to directly receive heat from the solid temperature tip.
    Type: Application
    Filed: January 10, 2001
    Publication date: July 11, 2002
    Applicant: Mesure Technology Co., Ltd.
    Inventor: Chu-Yih Yu
  • Patent number: 6406181
    Abstract: A temperature sensor, in particular for a gas sensor, has at least one printed conductor, where a temperature-dependent change in a resistance of the printed conductor is detected and analyzed. The printed conductor has at least one section made of a solid electrolyte.
    Type: Grant
    Filed: March 10, 2000
    Date of Patent: June 18, 2002
    Assignee: Robert Bosch GmbH
    Inventors: Bernd Mueller, Thomas Brinz, Bernd Schumann
  • Publication number: 20020071475
    Abstract: A temperature sensor incorporating flexible circuit technology. A flexible circuit sensor subassembly is composed of a flexible printed circuit substrate on which is printed a sensor circuit. In a preferred example the flexible circuit sensor subassembly, the sensor circuit has a sensor at a distal end, as for example a surface mount device (SMD) thermistor, a plurality of trace pads at a proximate end, and an interconnecting conductive trace between each trace pad and the sensor. A crimp terminal is respectively crimped onto each trace pad to provide a flexible circuit sensor assembly, wherein the crimp terminals are configured as needed for interfacing with an external circuit. The location of the sensor may be selectively located anywhere on the conductive traces to thereby easily size the probe length of the flexible circuit sensor subassembly to suit a any particular application and fit into any housing. A housing id molded over the flexible circuit sensor assembly.
    Type: Application
    Filed: December 7, 2000
    Publication date: June 13, 2002
    Inventors: Timothy M. Betzner, David P. O'Connell, Peter J. Straub, Michael J. Boehm
  • Publication number: 20020048308
    Abstract: A device for determining the temperature in the interior of a vehicle (12) comprises a temperature sensor (30) for arrangement behind a wall (18) adjacent the interior, and a processing unit (82) receiving the measuring signal from the temperature sensor (30) and outputting an output signal representing the temperature in the interior (10) of the vehicle (12). Further, it is provided with a thermal conductor element (36, 36′) for sensing the temperature of the air in the interior (10) in the region close to the wall, the thermal conductor element (36, 36′) being in thermally conductive contact with the temperature sensor (30) and being provided to extend up to or close to the wall (18) or through an opening (38) in the wall (18).
    Type: Application
    Filed: October 5, 2001
    Publication date: April 25, 2002
    Inventors: Otto Knittel, Hans-Dieter Roehling, Bernd Stich
  • Patent number: 6361207
    Abstract: An electrical termination system (100) includes a monolithic electrical termination device (101) for providing an electrical termination to an electrical circuit. The device (101) includes a ceramic substrate (106) supporting an RF termination resistor element (102) and a thermistor element (104) and providing a fast temperature conducting path therebetween. A ceramic cover (105) and the ceramic substrate (106) provide an enclosure enclosing the RF termination resistor element (102) and the thermistor element (104). The thermistor element (104) senses a temperature corresponding to the RF termination resistor element (102) and provides a signal representative of the temperature sensed by the temperature sensor element (104).
    Type: Grant
    Filed: June 4, 1999
    Date of Patent: March 26, 2002
    Assignee: Florida RF Labs, Inc.
    Inventor: Donald A. Ferguson
  • Patent number: 6354736
    Abstract: An RTD having a thin film HfN resistor formed on a substrate for temperature detection in accordance with the resistance of the HfN resistor. The RTD is a two lead device having high accuracy and a wide temperature range from 20 to 1400 degrees Kelvin. The substrate has bonding pads or contact strips connected to the resistor and processing electronics. An SiN thin film passivation layer is formed on the resistor and substrate. Two leads connect the bonding pads or contact strips to processing electronics and an indicator.
    Type: Grant
    Filed: March 24, 1999
    Date of Patent: March 12, 2002
    Assignee: Honeywell International Inc.
    Inventors: Barrett E. Cole, Steven R. Weeres, James O. Holmen
  • Patent number: 6341892
    Abstract: A resistance thermometer probe comprising a temperature sensor and a housing around the temperature sensor. The housing having a temperature sensing tip for placement of the temperature sensor and a stem to enable the temperature sensing tip to reach into otherwise inaccessable positions. The stem being generally cylindrical in shape and the temperature sensing tip being an integral extension of the stem but is reduced in both diameter and wall thickness to minimize thermal capacity and to maximize heat conduction. The probe also has electrically conductive wire leads to connect the temperature sensor to an ohmmeter. Fine granular glass particles and molecular sieve are placed in the empty space left after the temperature sensor and conductive wires have been inserted into the housing. The particles provide mechanical support to the temperature sensor, and reduces convection.
    Type: Grant
    Filed: February 3, 2000
    Date of Patent: January 29, 2002
    Inventor: George Schmermund
  • Publication number: 20020006155
    Abstract: For detecting the temperature of a fluid, particularly a flowing liquid or gaseous medium, in the hollow space of a housing, a temperature-measuring element is provided that can be connected to an evaluation device via a plug arrangement and is arranged in a protective tube of a sensor housing, which is closed on one side, and with a connection piece firmly affixed thereto. The protective tube projects at least with its tip into an opening of the hollow space that is sealed off from the outside atmosphere using an elastic O-ring. The temperature-measuring element is arranged in the region of the tip of the protective tube on one end of a longitudinally extending circuit board and is connected via strip conductors to the plug arrangement that leads to the outside. The plug arrangement is surrounded by a screw sheath of the sensor housing, which is firmly connected to the protective tube and is provided with a threading that projects into the housing of the hollow space for the purpose of mounting.
    Type: Application
    Filed: June 29, 2001
    Publication date: January 17, 2002
    Applicant: Heraeus Electro-Nite International N.V.
    Inventors: Karl-Heinz Wienand, Matthias Muziol
  • Publication number: 20010053172
    Abstract: For measuring temperature of a fluid flowing in a tube, a temperature measuring device is provided with an electric temperature sensor which is securely attached to a tube section so as not to shift in an axial or radial direction. The temperature sensor is applied mechanically fixed on strip conductors on the outer side of the tube section by a thermally and electrically good-conducting paste. The sensor is protected against the outside by a hollow housing, preferably sheath-shaped, surrounding the tube section with a spacing. A connection cabel, electrically and mechanically firmly connected with the sensor, is guided out of the sheath-shaped housing through an opening.
    Type: Application
    Filed: June 18, 2001
    Publication date: December 20, 2001
    Applicant: Heraeus Electro-Nite International N.V.
    Inventors: Ullrich Sakowsky, Matthias Muziol
  • Patent number: 6305841
    Abstract: A temperature sensor includes a thermistor element housed in a metal cap and a mineral insulated cable for acquiring signals from said thermistor element wherein the mineral insulated cable employs a ventilation composition that provides stable thermistor element resistance characteristics. Thermistor element is equipped with thermistor section including an oxide semiconductor, and electrode wires extending from thermistor section for acquisition of thermistor signals, and is arranged on the end of mineral insulated cable and housed in metal cap. The mineral insulated cable employs a composition in which electrically conducting core wires connected to electrode wires are insulated and held in a metal outer cylinder by insulating powder filled into the outer cylinder. A ventilation quantity of at least 5×10−4 ml/(MPa sec) is secured within outer cylinder at normal temperature.
    Type: Grant
    Filed: September 17, 1999
    Date of Patent: October 23, 2001
    Assignee: Denso Corporation
    Inventors: Matsuo Fukaya, Junichi Nagai
  • Publication number: 20010026577
    Abstract: A sensor for temperature measurements has a temperature-dependent measuring element, which is arranged in one end of a quartz glass tube facing the measurement, wherein a connection line of the measuring element is guided to the outside through the other end of the quartz glass tube. The quartz glass tube is itself surrounded by a protective tube made of stainless steel, which is closed off at its end facing the measurement by a rotationally symmetric formed body, preferably a sphere made of stainless steel. A spacer made of electrically insulating material, preferably mica, is provided between the formed body or sphere and the measuring element.
    Type: Application
    Filed: March 28, 2001
    Publication date: October 4, 2001
    Applicant: Heraeus Electro-Nite International N.V.
    Inventor: Matthias Muziol
  • Patent number: 6297723
    Abstract: A low cost high-performance temperature sensor that can be manufactured of a thin-film temperature detecting element with high yield. The temperature sensor has a metal cylinder (10); a ceramic substrate (2) placed in the metal cylinder and a temperature detecting element (3) and film electrodes (94) connected with the output of the temperature detecting element (3); an inorganic filer (95) for absorbing stress to hold the ceramic substrate (2) inside the metal cylinder (1); and a cap (6), provided on one end of the metal cylinder (1), for protecting the temperature detecting element (30) on the ceramic substrate (2). One end of the ceramic substrate is fixed to a first end of a terminal (27) which is U-shaped, and the terminal includes an expansion and contraction absorbing portion (20) between a first and second end.
    Type: Grant
    Filed: December 27, 1999
    Date of Patent: October 2, 2001
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Rihito Shoji, Takashi Tamai, Katsunori Matsubara, Kiyoshi Saitou
  • Patent number: 6293699
    Abstract: There is disclosed a method for continuously monitoring temperature at multiple locations within a controlled temperature unit (CTU) using RTDs that can be removed and reinserted. The key to the method is the collection of data using an RTD fixed in a phenolic thermowell, which in turn is inserted through a polytetrafluoroethylene-coated sleeve in the wall of the CTU. The temperature information is transmitted from a data module to an interfaced computer system where it may be presented to the operator in a graphical, tabular or text format or stored in memory. The temperature probes are easily removable so as to facilitate calibration without disruption of the contents of the CTU and can be consistently replaced in the same location within the CTU.
    Type: Grant
    Filed: October 26, 1999
    Date of Patent: September 25, 2001
    Assignee: Merck & Co., Inc.
    Inventors: Fred J. Bailey, Mark Pinder, Carl W. Holz
  • Patent number: 6272735
    Abstract: In order to present a temperature sensor which works stable also in a high temperature condition showing only a small deviation in the resistance value of thermistor, the invented temperature sensor comprises a heat resisting cap (5) made of a metal, a thermistor (1) housed inside the heat resisting cap (5) and at least more than one lead wire (4) which is electrically connected with the thermistor (1) and is pulled out of said heat resisting cap (5), said heat resisting cap (5) being formed with an alloy containing Ni—Cr as the main ingredient.
    Type: Grant
    Filed: June 3, 1999
    Date of Patent: August 14, 2001
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Hiroki Moriwake, Nobuharu Katsuki, Tsuyoshi Tanaka, Katsunori Matsubara, Takashi Tamai
  • Patent number: 6264363
    Abstract: A novel temperature sensor having a radial-type thermistor and a method of fabrication thereof are disclosed. A pair of electrode wires 22 are embedded in a spaced relation from each other substantially in parallel to the axis 21a of a cylindrical thermistor 21, and have an end 22a thereof led out toward an end 21b of the cylinder of the thermistor 21. A pair of core wires (signal lines) 31 arranged in spaced relation from each other substantially in parallel to the cylinder axis 21a are led out from the outer cylinder 33 of a two-core pipe 30 and are connected to an end 22a of each electrode wire 22. The wires 22, 31 are overlapped in such a manner that the diagonal K1 connecting the electrode wires 22 crosses the diagonal K2 connecting the signal lines 31 on the cylinder axis 21a, and coupled to each other by laser welding.
    Type: Grant
    Filed: July 22, 1999
    Date of Patent: July 24, 2001
    Assignee: Denso Corporation
    Inventors: Sotoo Takahashi, Junichi Nagai
  • Patent number: 6257760
    Abstract: A method is provided for determining the temperature of a semiconductor fabrication process in which a resistivity versus temperature calibration curve for a superlattice structure is created. A plurality of similar superlattice structures which include alternating layers of a conductor and a semiconductor may be annealed at different temperatures. The resistivity of each superlattice structure may then be measured after the superlattice structures have been cooled to room temperature in order to form the calibration curve. A similar superlattice structure may then be subjected to the temperature at which the semiconductor fabrication process is typically performed, causing the resistivity of the superlattice structure to change. Based on the resulting resistivity of the superlattice structure, the calibration curve may be used to determine the process temperature of the superlattice structure during the fabrication process.
    Type: Grant
    Filed: December 2, 1999
    Date of Patent: July 10, 2001
    Assignee: Advanced Micro Devices, Inc.
    Inventors: Bradley M. Davis, Shengnian Davis Song, Sey-Ping Sun
  • Patent number: 6250803
    Abstract: A method of measuring temperature of momentary anneals in the temperature range of around 900° C. is disclosed. The method comprises the steps of providing a substrate of doped polysilicon or single crystal silicon, applying a blocking layer on a portion of the substrate, selectively forming silicide on the substrate adjacent opposite ends of the blocking layer to define a resistor, subjecting the resistor to a momentary anneal in the temperature range around 900° C., and measuring interfacial resistance between the silicide and the substrate after the annealing step, the resistance correlating to anneal temperature.
    Type: Grant
    Filed: June 8, 1999
    Date of Patent: June 26, 2001
    Assignee: International Business Machines Corporation
    Inventors: Arne W. Ballantine, Glen L. Miles
  • Patent number: 6236320
    Abstract: A temperature determining apparatus produces a predetermined reference voltage from an operating voltage supplied thereto from the outside, divides the reference voltage with a pair of resistance values having different temperature-resistance characteristics to produce a first divided voltage and divides the reference voltage with a pair of resistance values having the same temperature-resistance characteristic to produce a second divided voltage, and compares the first and second divided voltages to determine a threshold temperature. Since the reference voltage is constant as long as an ambient temperature is not changed even when the operating voltage is changed, the first and second divided voltages are not changed depending on the operating voltage, thereby allowing the determination of an ambient temperature with favorable accuracy in a wide range of operating voltages.
    Type: Grant
    Filed: February 25, 2000
    Date of Patent: May 22, 2001
    Assignee: NEC Corporation
    Inventor: Hisanori Senba
  • Patent number: 6232618
    Abstract: A temperature-dependent measuring resistor is connected to a reference resistor in series, wherein this series connection is flowed through by a constant impressed current. A connection point located between the two resistors is connected to the N-input of a first feedback differential amplifier, whose P-input is supplied with direct current voltage tapped from a voltage divider. During a temperature increase in the area of the measuring resistor, the potential increases at the output of the first differential amplifier, which delivers the constant impressed current and is connected to the measuring resistor, while the potential at the output of the differential amplifier falls when the temperature falls. The temperature-dependent voltage signal that is output at the differential amplifier is supplied in subtracting connection to the P-input of an after-connected second differential amplifier, whose output is connected to a measurement unit for measuring the voltage characteristic of the temperature.
    Type: Grant
    Filed: December 22, 1998
    Date of Patent: May 15, 2001
    Assignee: Heraeus Electro-Nite International N.V.
    Inventors: Karlheinz Wienand, Andreas Müller
  • Patent number: 6190040
    Abstract: A cable and interconnect design including a substrate containing discrete sensors in a plurality of cavities or a plurality of thin film sensors deposited throughout the substrate surface. The discrete sensors are bonded within each cavity and potted with a potting compound. Each sensor has leads joined to filaments by an interconnect system. Thin film sensor leads on the substrate connect to a signal transmitting cable by the interconnect system. The filaments are coated and converge at a strain relief coupled to the substrate. The cable, having flat and round portions, includes an array of flat signal transmitting cables arranged side by side in the flat portion and stacked one on top of the other in the round portion. Each signal cable contains a plurality of the filaments bonded together. A pair of ribbons extend along the length of the array of cables. The ribbons and array of cables are bonded together with film to form the flat portion.
    Type: Grant
    Filed: May 10, 1999
    Date of Patent: February 20, 2001
    Assignee: Sensarray Corporation
    Inventors: Wayne G. Renken, Mei H. Sun
  • Patent number: 6164819
    Abstract: In order to present a temperature sensor which works stable also in a high temperature condition showing only a small deviation in the resistance value of thermistor, the invented temperature sensor comprises a heat resisting cap (5) made of a metal, a thermistor (1) housed inside the heat resisting cap (5) and at least more than one lead wire (4) which is electrically connected with the thermistor (1) and is pulled out of said heat resisting cap (5), said heat resisting cap (5) being formed with an alloy containing Ni--Cr as the main ingredient.
    Type: Grant
    Filed: July 28, 1997
    Date of Patent: December 26, 2000
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Hiroki Moriwake, Nobuharu Katsuki, Tsuyoshi Tanaka, Katsunori Matsubara, Takashi Tamai
  • Patent number: 6159386
    Abstract: A temperature-dependent measuring resistance with rapid response time is at least partially arranged on an electrically insulating surface of a ceramic substrate, wherein a portion of the conductor path spans a recess situated in the substrate in a bridge-like manner, and the remaining portion of the conductor path in the edge area of the substrate adjacent to the recess is provided with connection contact fields. The conductor path comprises a platinum or gold layer, wherein the conductor path is partially provided with a cover layer of glass, and wherein the connection contact fields are exposed. In a further embodiment, the conductor path is arranged together with the connection contact fields either on a screen-printed glass membrane or on a thin film membrane applied in a PVD process, which covers the surface of the ceramic substrate and spans the recess. The cover layer is likewise selectively applied by screen printing in case there is a glass membrane.
    Type: Grant
    Filed: June 10, 1999
    Date of Patent: December 12, 2000
    Assignee: Heraeus Electro-Nite International N.V.
    Inventors: Karlheinz Wienand, Karlheinz Ullrich, Margit Sander, Stefan Dietmann
  • Patent number: 6152597
    Abstract: A thin, conformable apparatus for monitoring functions of a power source is disclosed that includes at least one dielectric layer upon which are one or more devices selected from a group consisting of a thermistor, data lines, power conductors, and connectors. This assembly, in various configurations of its parts, attaches internally or externally to power sources that may include a "smart battery." When attached to a part or to an entire power source, said apparatus may connect that power source to its host, and other external devices, for example a charger, monitor, or power supply, whereby allowing simultaneous and concurrent data or power to flow between at least two of said devices.
    Type: Grant
    Filed: June 26, 1998
    Date of Patent: November 28, 2000
    Inventor: Patrick H. Potega
  • Patent number: 6130414
    Abstract: Systems and methods for controlling the temperature or other characteristic of semiconductor processing tools by measuring current flow to the tool is provided. In one embodiment, a current sensor is provided for measuring current flow to the heat source and generating an electrical signal proportional to the current flow. The current sensor includes a noise filter for reducing noise in the electrical signal induced by stray emf signals present around the processing tool. A controller, responsive to the electrical signal generated by the current sensor, is provided for controlling the processing tool. In this manner, the controller can, for example, allow for early detection of heat source failures or degradation. When such a condition is detected, the controller may, for instance, signal an audible or visual warning or shut down the processing tool.
    Type: Grant
    Filed: August 19, 1998
    Date of Patent: October 10, 2000
    Assignee: Advanced Micro Devices, Inc.
    Inventor: Anthony J. Toprac
  • Patent number: 6130598
    Abstract: The invention relates to a temperature detecting apparatus and an automobile using the same, and is intended to improve the heat response characteristic.
    Type: Grant
    Filed: January 8, 1997
    Date of Patent: October 10, 2000
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Nobuharu Katsuki, Tsuyoshi Tanaka, Katsunori Matsubara, Takashi Tamai, Hiroki Moriwake
  • Patent number: 6127915
    Abstract: A high temperature platinum resistance thermometer and a method of producing such a thermometer. Both a sensor frame and a protective tube are made of mon-crystalline synthetic sapphire, which has a melting point of about 2050.degree. C. and effectively prevents vaporized metal from transmitting through it. The thermometer is thus effectively operated at a high temperature up to about 1500.degree. C. The thermometer is also provided with platinum wires capable of measuring insulating resistance, thus effectively compensating for measuring errors caused by such an insulating resistance.
    Type: Grant
    Filed: March 24, 1999
    Date of Patent: October 3, 2000
    Assignee: Korea Research Institute of Standards and Science
    Inventors: Kee Sool Gam, Yong Gyoo Kim, Kee Hoon Kang
  • Patent number: 6113263
    Abstract: A contact-type thermometer which is supported by fixing a contact plate having a supporting bar on both sides of an annular elastic member that is formed by connecting both sides of an elastic sheet. A temperature sensitive portion is arranged between the annular elastic member and the contact plate to hold a portion attached to the contact plate of the annular elastic member and the opposite side using the support. In addition, clearance fixing the supporting bar into a guide hole that is long from side to side in a holder such that the contact plate contacts an object to be temperature measured in parallel. The elastic force acting on the back of the contact plate under the condition of the elastically deforming annular elastic member becomes slightly flat, wherein the contact plate does not float more than a distance to the surface of the object to be temperature measured, so the temperature can be accurately measured.
    Type: Grant
    Filed: May 12, 1998
    Date of Patent: September 5, 2000
    Assignee: Anritsu Meter Co., Ltd.
    Inventor: Yoshinobu Satoh
  • Patent number: 6099164
    Abstract: The invention is directed to a thermistor created using a monocrystalline form of a nickel-manganese-oxide cubic spinel and methods of using same as a sensor in an electrical circuit.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: August 8, 2000
    Assignee: Thermometrics, Inc.
    Inventors: Carol Zwick Rosen, John Carter, Jr.
  • Patent number: 6082895
    Abstract: A thermistor including a pill assembly, a connector body, and an adhesive sealant. The pill assembly includes a thermistor pill and a conductive lead operably attached thereto. The conductive lead extends through the connector body. The adhesive sealant bonds with both the connector body and the conductive lead proximate to where the conductive lead extends through the connector body.
    Type: Grant
    Filed: September 18, 1998
    Date of Patent: July 4, 2000
    Assignee: General Electric Company
    Inventor: Alan J. Janicek
  • Patent number: 6076965
    Abstract: A nickel-cobalt-manganese oxide monocrystal having a cubic spinel structure over a broad concentration range of manganese/cobalt/nickel, including the entire possible range of manganese to nickel ratios, provided that the resulting monocrystal has a cubic spinel structure. A flux method is described for producing the monocrystals. Also disclosed are sensors, based on the monocrystals, having desirable electrical properties In particular, the sensors of the present invention are highly accurate temperature sensors or thermistors having high sensitivity, good reproducibility and improved aging characteristics. Performance of a sensor based on the monocrystal permits the preparation of a thermistor standard which can be used to evaluate the performance of ceramic devices.
    Type: Grant
    Filed: June 17, 1997
    Date of Patent: June 20, 2000
    Assignee: Therometrics, Inc.
    Inventors: Carol Zwick Rosen, Donald G. Wickham
  • Patent number: 6074091
    Abstract: A remote temperature sensing system (10) for a scanning mirror (7). The system (10) includes a sensor which detects heat radiated by the mirror and provides a signal in response thereto. In the illustrative implementation, the system (10) includes a thermistor mounted within a housing. The housing is contoured to maximize the receipt of thermal energy thereby. A mounting assembly maintains the thermistor a predetermined nonzero distance from the scanning mirror (7). The invention includes a shroud (12) mounted on the mirror (7) for shielding the thermistor and a support tube connected to the thermistor housing on a first end and to a base on the second end thereof. The support tube is adapted to remain stationary within the shroud as the scanning mirror and the shroud rotate due to the scanning of the mirror. Wires are connected to the thermistor on a first end thereof and are wrapped around the support tube.
    Type: Grant
    Filed: February 7, 1997
    Date of Patent: June 13, 2000
    Assignee: Raytheon Company
    Inventors: Steven G. VanDyk, Walter Balinski, Ronald J. Choo, Paul E. Bortfeldt
  • Patent number: 6059453
    Abstract: A temperature probe for measuring temperatures in a fluid contains a temperature responsive electrical element partially encased by a sapphire encasement. The sapphire encasement and the electrical element are further partially encased by a ceramic encasement that is exposed to the fluid. The ceramic encasement is permeable to certain gases to which the sapphire encasement is impermeable. A series of seals in the temperature probe prevents fluid from exiting through the temperature probe if the ceramic encasement and sapphire encasement are breached.
    Type: Grant
    Filed: April 20, 1998
    Date of Patent: May 9, 2000
    Assignee: Rosemount Inc.
    Inventors: Konrad Kempf, Werner Doring
  • Patent number: 6036361
    Abstract: An improved medical thermometer is disclosed that provides an accurate estimate of a patient's temperature in substantially reduced time as compared to prior thermometers of this kind. This improved performance is achieved by configuring the thermometer to include a hollow, thin-walled metallic probe tip sized for secure attachment to the remote end of an elongated base. This defines an elongated cavity within the probe tip, and a thermistor is bonded to the probe tip within that cavity. The cavity is configured to be substantially longer in the direction of the probe's longitudinal axis than it is in a transverse direction, to inhibit the conduction of heat along the probe tip to the elongated base. The temperature of the thermistor, therefore, closely follows the temperature of any surface that contacts the metallic tip.
    Type: Grant
    Filed: March 26, 1999
    Date of Patent: March 14, 2000
    Assignee: Welch Allyn, Inc.
    Inventors: Thomas K. Gregory, Kerry O. Banke, John A. Mossman, John W. Stevenson, Edward D. Suszynski
  • Patent number: 6027246
    Abstract: Monocrystalline nickel-cobalt-manganese-copper oxide having a cubic spinel structure over a broad range of concentration ratios of manganese/cobalt/nickel/copper, including methods of producing such monocrystals, particularly those having a quaternary cubic spinel structure. Sensors having desirable electrical properties are disclosed, which sensors comprise at least a portion of such monocrystals. In particular, such sensors are highly accurate temperature sensors or thermistors having high sensitivity, good reproducibility and improved aging characteristics.
    Type: Grant
    Filed: December 16, 1997
    Date of Patent: February 22, 2000
    Assignee: Thermometrics, Inc.
    Inventors: Carol Zwick Rosen, Donald G. Wickham
  • Patent number: 6022142
    Abstract: A method of measuring a substrate temperature includes the steps of: forming a first lamination of different metals on a substrate; subjecting the substrate to a heat treatment; measuring a sheet resistance of the substrate after the heat treatment; and estimating a temperature of the substrate during the heat treatment from a correlation between sheet resistances and heat treatment temperatures, the correlation being prepared in advance by subjecting preparatory substrates each having a second lamination having the same structure as the first lamination to heat treatments at a plurality of predetermined heat treatment temperatures and by measuring the sheet resistance of each second lamination layer after the heat treatment. The substrate temperature during heat treatment can be estimated easily without intervening the actual manufacture process by a temperature measuring process.
    Type: Grant
    Filed: April 28, 1997
    Date of Patent: February 8, 2000
    Assignee: Yamaha Corporation
    Inventor: Satoshi Hibino
  • Patent number: 5999081
    Abstract: A temperature measurement system provides improved thermal sensors, including thin film and wire wound RTD's having fast and accurate measurement response times. Thermal sensor housing materials are matched to those of the material being measured, thereby minimizing the use of interface potting materials that would otherwise impose a thermal gradient. A screw-in mounting stabilizes a connection between the housing and the material being measured. Double and triple shielded thermal devices are provided to filter RFI and EMI. Improved surface measurements of high temperatures are obtained by incorporating a thermal mass into thermocouple housing designs. Additionally, a unique stain relief is disclosed.
    Type: Grant
    Filed: November 29, 1996
    Date of Patent: December 7, 1999
    Assignee: Marchi Associates, Inc.
    Inventors: John H. Hannigan, Raymond F. Crews
  • Patent number: 5975758
    Abstract: Disclosed herein is a method and sensor for easily detecting the thermal history (or the change in state by heat) of a specimen. The sensor is made up of a pair of electrodes 1, 1, a diffusion layer 2 of insulating material disposed between the electrodes, and an electrically conductive metal 3. The electrodes are electrically isolated from each other in the beginning. As the sensor experiences heat history, the electrically conductive metal diffuses into the diffusion layer 2, thereby changing the resistance of the diffusion layer. When in use, the sensor is placed in or near the atmosphere to which the specimen is exposed. In response to the change of the specimen by heat, the electrically conductive metal 3 diffuses into the diffusion layer 2 to such an extent that the electrical resistance across the electrodes extremely decreases after a certain period of time. Thus it is possible to detect the deterioration or life of the specimen by monitoring the change in electrical resistance of the sensor.
    Type: Grant
    Filed: June 23, 1997
    Date of Patent: November 2, 1999
    Assignee: Kabushiki Kaisha Toyota Chuo Kenkyusho
    Inventors: Koji Yokota, Yoshimi Kizaki, Yoshiyuki Sakamoto, Tomoyoshi Motohiro
  • Patent number: 5936513
    Abstract: The invention relates to the growth of nickel-iron-manganese oxide monocrystals having a cubic spinel geometry. Methods of their growth and sensors constructed with same are also described.
    Type: Grant
    Filed: August 22, 1997
    Date of Patent: August 10, 1999
    Assignee: Thermometrics, Inc.
    Inventors: Carol Zwick Rosen, Donald G. Wickham
  • Patent number: 5910189
    Abstract: It is aimed to present a liquid level detector that can be assembled by simply stacking component parts one upon another, without using any soldering work at all. In the liquid level detector, a thermistor (7) is placed on an electrode (2a) of element holder (2) and is pressed by an electrode (3a) of a terminal (3), a coil spring (4) is inserted around the terminal (3) for the electrode (3a) to press the thermistor (7). An insulator (5), with which a terminal member (6) is calked together in advance, is placed to a fitting portion (2c) of the element holder (2), and then the entire assembly is inserted from the opening into a metal case (1), so that the opening is closed with the insulator (5) calked by a fitting portion (1a) of case (1) and the fitting portion (2c) of element holder (2) aligned to an indention (5c) of insulator (5).
    Type: Grant
    Filed: February 12, 1998
    Date of Patent: June 8, 1999
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Kotaro Suzuki, Kikuo Kainou
  • Patent number: 5823680
    Abstract: A temperature sensor includes a ceramic substrate, and a sensing resistor containing platinum is embedded in the ceramic substrate. Electric current can be applied to the sensing resistor through the lead. The voltage of the sensing resistor can be detected through the second lead. Another resistor for dividing voltage is electrically connected to the sensing resistor, the resistor is trimmed by laser irradiation so as to adjust its electrical resistance value such that upon applying electric current having a certain value onto the sensing resistor an output voltage having a predetermined value is generated. Heat generated by the laser irradiation to the resistor does not affect an electrical resistance value of the resistor as much as that of the sensing resistor, thereby improving precision of the temperature sensor. The sensing resistor avoids contact with the atmosphere.
    Type: Grant
    Filed: March 11, 1997
    Date of Patent: October 20, 1998
    Assignee: NGK Insulators, Ltd.
    Inventors: Nobuhide Kato, Nobukazu Ikoma
  • Patent number: 5775811
    Abstract: A temperature sensor which can achieve accurate temperature measurement in a magnetic field and accurate temperature measurement over a broader temperature range and, further, provides a temperature sensor which, in the correction of a temperature characteristic on a resistance value of the present temperature sensor, can reduce, to a minimal possible extent, an error between a value found from an approximation equation and a measured value, includes a cylindrical type sensor including a temperature-sensitive device having a micro-crystalline semiconductor thin film formed over an insulating substrate and four electrodes connected to the thin film, a cylindrical container made of a nonmagnetic metal and holding the temperature-sensitive device, together with a helium gas, hermetically sealed therein and four conductors hermetically mounted at the bottom of the container and connected to the corresponding electrodes of the temperature-sensitive device, with the micro-crystalline semiconductor thin film 2 being
    Type: Grant
    Filed: August 6, 1996
    Date of Patent: July 7, 1998
    Assignee: Anritsu Corporation
    Inventors: Jun Hiraoka, Setsuo Kodato
  • Patent number: 5749656
    Abstract: The present invention generally includes a thermal sensor assembly for a vehicle application including an insert molded part having a thermistor/wire sub-assembly and terminal that are assembled with a "F" crimp and resistance welded that are insert molded to a pre-mold or connector that has a shut-off plate seal on the terminal's insulation crimp. The invention provides a more robust package that is resistant to vibration, insulates the terminals from shorting and permits further handling of the sub-assembly without damage to the terminals. Further, the thermistor can be very small and a very small wire can be used to connect the terminal to the thermistor element. Because a smaller thermistor can be utilized, a much smaller probe tip can be design into the thermal sensor assembly. The insert molded part can either be a preform for press-fit applications or a male sensor connector for applications requiring a metal housing.
    Type: Grant
    Filed: August 18, 1997
    Date of Patent: May 12, 1998
    Assignee: General Motors Corporation
    Inventors: Michael James Boehm, Peter John Straub, Richard Darrell Kirkwood
  • Patent number: 5741074
    Abstract: A Linear Integrated Sensing Transmitter Sensor for measuring and reporting temperature has a housing defining a cavity therethrough, a resistance temperature within the housing, and a transmitter disposed within the housing connected to the resistance temperature detector for providing a current which is a linear function of the temperature sensed by the resistance temperature detector. The transmitter further includes an excitation current means for applying an excitation current to the resistance temperature detector, a converter means for converting a detected voltage to a current, and a feedback means for adjusting a feedback current to maintain the voltage as a linear function of the temperature sensed.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: April 21, 1998
    Assignee: Thermo Electrioc Corporation
    Inventors: Theodore P. Wang, Michael G. Allen, Rienk Oldenkamp
  • Patent number: 5735606
    Abstract: A platinum temperature sensor showing excellent sensitivity to heat. The sensor comprises an insulating substrate having a support portion at one end of the substrate. A heat-generating portion is formed by a platinum film circuit at the other end of the substrate. A coating made from a material having a low thermal conductivity is formed on the support portion of the insulating substrate to suppress dissipation of heat from the support portion. A first heat-insulating gap is created between an end portion of the platinum film circuit and the heat-generating portion. A second heat-insulating gap is created between the platinum film circuit and the coating.
    Type: Grant
    Filed: February 14, 1996
    Date of Patent: April 7, 1998
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Hiroji Tani, Teppei Kubota