Having Electrical Indication Patents (Class 374/188)
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Patent number: 11682812Abstract: A method includes stacking unit cells in a stacking direction. Each unit cell includes an electrode structure, a separator structure, and a counter-electrode structure. The electrode structure includes an electrode current collector and an electrode active material layer, and the counter-electrode structure includes a counter-electrode current collector and a counter-electrode active material layer. The electrode and counter-electrode structures extend in a longitudinal direction perpendicular to the stacking direction, and an end portion of the electrode current collector extends past the electrode active material and the separator structure in the longitudinal direction.Type: GrantFiled: March 31, 2022Date of Patent: June 20, 2023Assignee: Enovix CorporationInventors: Michael J. Armstrong, Daniel J. Noelle, Robert S. Busacca, Bruno A. Valdes, Robert K. Rosen, Murali Ramasubramanian, Ashok Lahiri, Robert M. Spotnitz
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Patent number: 11008215Abstract: A complementary metal-oxide-semiconductor (CMOS) micro electro-mechanical system (MEMS) microphone and a method for fabricating the same are disclosed. Firstly, a CMOS device including a semiconductor substrate, a first oxide insulation layer, a doped polysilicon layer, a second oxide insulation layer, a patterned polysilicon layer, and a metal wiring layer from bottom to top. The metal wiring layer is formed on the second oxide insulation layer. The patterned polysilicon layer includes undoped polysilicon. Then, a part of the metal wiring layer is removed to form a metal electrode and the semiconductor substrate is penetrated to have a chamber and expose the first oxide insulation layer, thereby forming a MEMS microphone.Type: GrantFiled: November 26, 2019Date of Patent: May 18, 2021Inventor: Chuan-Wei Wang
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Patent number: 8899829Abstract: A temperature-sensitive label is described. The temperature-sensitive label has a temperature-sensitive system having a filiform shape memory member that has a first end portion having a terminal part fixedly secured to a first contact member, a second end portion having a terminal part restrained by a second contact member in a non-permanent way, and a central curved portion. The central curved portion is in the martensitic phase while the first and second portions are in the austenitic phase at a same environmental temperature above a critical threshold temperature to be monitored by the label such that in case of exposure to a temperature lower than the preset critical threshold temperature the end portions of the filiform shape member perform a phase transition, from austenitic phase to martensitic phase, which causes its irreversible disengagement from the restraint formed by the second contact member.Type: GrantFiled: February 20, 2013Date of Patent: December 2, 2014Assignee: SAES Getters S.p.A.Inventors: Francesco Butera, Stefano Alacqua, Luca Fumagalli
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Publication number: 20140334526Abstract: A temperature-sensitive label is described. The temperature-sensitive label has a temperature-sensitive system having a filiform shape memory member that has a first end portion having a terminal part fixedly secured to a first contact member, a second end portion having a terminal part restrained by a second contact member in a non-permanent way, and a central curved portion. The central curved portion is in the martensitic phase while the first and second portions are in the austenitic phase at a same environmental temperature above a critical threshold temperature to be monitored by the label such that in case of exposure to a temperature lower than the preset critical threshold temperature the end portions of the filiform shape member perform a phase transition, from austenitic phase to martensitic phase, which causes its irreversible disengagement from the restraint formed by the second contact member.Type: ApplicationFiled: February 20, 2013Publication date: November 13, 2014Inventors: Francesco Butera, Stefano Alacqua, Luca Fumagalli
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Publication number: 20140177675Abstract: A temperature sensing system comprises a conductive tube, a shape memory alloy (SMA) element, and a detector. The SMA element is disposed to create an electrical contact with the electrical tube when subjected to at least a critical temperature, and the detector is configured to identify an alarm condition when the conductive tube and the SMA element form a closed electrical circuit.Type: ApplicationFiled: December 20, 2013Publication date: June 26, 2014Applicant: Kidde Technologies, Inc.Inventors: Paul Rennie, Beth A. Dutson, Paul D. Smith, Robert G. Dunster
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Patent number: 8500034Abstract: An integrated solid-state temperature controller that is mountable to an object the temperature of which is controlled by the solid-state temperature controller, or is mountable in a space in which the temperature is controlled by the solid-state temperature controller. The solid-state temperature controller able to withstand and continue to operate in extremes of temperatures at which the object or space is controlled, and able to withstand and continue to operate in extremes of temperatures of the object or space when the temperature is not being controlled.Type: GrantFiled: September 30, 2009Date of Patent: August 6, 2013Assignee: Engenity LLCInventor: Richard S. Garber
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Publication number: 20120211684Abstract: A detector (3) is provided that is independent of outside energy, for a release device, for which detector no battery and no external power supply is provided, and that generates a signal at a defined temperature, a thermal release element (3.2), at least one piezo element (3.1) and a coupling element (11) being arranged such in a bracket/housing (3.3) that as a result of a change in state of the thermal release element (3.2) by the coupling element (11) exerts a mechanical pressure on the piezo element (3.1) so that an electric signal is generated. A valve for a release device is also provided.Type: ApplicationFiled: February 16, 2012Publication date: August 23, 2012Applicant: MINIMAX GMBH & CO. KGInventor: Chrysafis Zlatintsis
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Publication number: 20120076172Abstract: The present invention provides a micro-electro-mechanical-system (MEMS) temperature sensor that employs a suspended spiral comprising a material with a positive coefficient of thermal expansion. The thermal expansion of the suspended spiral is guided to by a set of guideposts to provide a linear movement of the free end of the suspended spiral, which is converted to an electrical signal by a set of conductive rotor azimuthal fins that are interdigitated with a set of conductive stator azimuthal fins by measuring the amount of capacitive coupling therebetween. Real time temperature may thus be measured through the in-situ measurement of the capacitive coupling. Optionally, the MEMS temperature sensor may have a ratchet and a pawl to enable ex-situ measurement.Type: ApplicationFiled: September 28, 2010Publication date: March 29, 2012Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Jason P. Gill, David L. Harmon, Timothy D. Sullivan
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Publication number: 20110044373Abstract: A fiber-optic temperature sensor with a cantilever beam including two different material strips with different thermal expansion coefficients, the cantilever beam having a reflective surface on an end of the cantilever beam, an optical fiber probe including a transmitting multimode optical fiber and at least one receiving multimode optical fiber for receiving reflected light from the reflective surface. Temperature changes at the sensor are indicated by a change in reflected light coupled into the receiving multimode optical fiber due to lateral displacement of the edge of the reflective surface caused by bending of the cantilever beam. Some embodiments have additional reference receiving fibers for compensation for noise, changes in gap length, and other factors.Type: ApplicationFiled: February 2, 2010Publication date: February 24, 2011Applicant: The Government of the US, as represented by the Secretary fo the NavyInventors: Nicholas Lagakos, Joseph A. Bucaro
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Patent number: 7604398Abstract: Cumulative thermal exposures monitors and remote indicating cumulative thermal exposure monitors and system for reading the same are disclosed. The monitors have a thermally insulative housing with a cavity and a thermally-responsive member therein formed of shape memory material, which may be provided with a coating or sheath of insulative or shape memory polymer material, that gradually changes from a first shape to a second shape over a prescribed temperature range wherein the thermal capacity and insulative properties of the housing, cavity, and shape memory material transition temperature range are correlated relative to one another and calibrated to closely match a thermal decay profile (time-temperature profile) of the product being monitored. In remote indicating embodiments, the data can be retrieved remotely via RF transponder technology without directly viewing the monitor device.Type: GrantFiled: March 26, 2007Date of Patent: October 20, 2009Inventors: Jeffrey W. Akers, Gerald A. Coles, James Michael Zerkus
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Patent number: 7557721Abstract: The thermal detection and visual alarm unit includes a plurality of first expansion thermal detectors (17) with normally closed contacts that are connected in series with a first lamp (15) to form a first two-terminal circuit (21, 23), a plurality of second expansion thermal detectors (18) with normally open contacts connected in parallel, a second lamp (16) connected in series with the second thermal detectors to form a second two-terminal circuit (22, 24), the first and second thermal detectors forming a plurality of cells (19) each combining a first detector and a second detector having respective contact-opening or contact-closing temperatures that are substantially equal, each of the first and second two-terminal circuits being arranged for connection to the terminals of an electrical power supply (12).Type: GrantFiled: November 28, 2006Date of Patent: July 7, 2009Assignee: EurocopterInventor: Daniel Chaniot
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Publication number: 20090117269Abstract: An electrically conductive composite material includes metallic nanostrands distributed throughout a matrix constructed of a polymer, ceramic, or elastomer. The nanostrands may have an average diameter under four microns and an average aspect ratio over ten-to-one. Larger fibers may also be included to enhance electrical conductivity or other properties. The nanostrands and/or fibers may be magnetically oriented to enhance electrical conductivity along one direction. A pressure sensor may be formed by utilizing an elastomer for the matrix. Electrical conductivity through the composite material varies in proportion to deflection of the elastomer. A composite material may be applied to a surface as an electrically conductive paint. Composite materials may be made by cutting a blank of the nanostrands to the desired shape, inserting the matrix, and curing the matrix. Alternatively, a suspension agent may first be used to dispose powdered nanostrands in the desired shape.Type: ApplicationFiled: December 11, 2006Publication date: May 7, 2009Applicant: Metal Matrix Composites CompanyInventors: George Clayton Hansen, Lauren Hansen, William C. Jenkin
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Publication number: 20080025373Abstract: A temperature detecting device includes a heat receiving plate, a displacement transmitting part, a deforming part, a deformation generating part and a displacement detecting part. The heat receiving plate is restrained at its rim portion to generate a displacement of a central portion in its thickness direction with respect to the rim portion in accordance with the temperature of an atmospheric gas. The displacement transmitting part is displaced in accordance with the displacement of the central portion of the heat receiving plate. The deforming part is deformed by the displacement transmitting part. The deformation generating part maintains a distance between the rim portion of the heat receiving plate and the deforming part. The displacement detecting part detects a deformation of the deforming part and outputs an electric signal.Type: ApplicationFiled: April 17, 2007Publication date: January 31, 2008Applicant: DENSO CORPORATIONInventors: Inao Toyoda, Yukihiro Katoh
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Publication number: 20040190593Abstract: A temperature measuring device includes a temperature-responsive element that mechanically moves a first inductive assembly component relative to a second inductive assembly component in response to temperature changes. The movement of the first inductive assembly component relative to the second inductive assembly component generates a change in a local eddy current pattern that corresponds to the sensed temperature.Type: ApplicationFiled: August 26, 2003Publication date: September 30, 2004Inventors: Walter J. Ferguson, John H. Bailey
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Patent number: 6769803Abstract: A calibration device for performing a temperature calibration of the temperature in an oven, especially an oven adapted for thermal treatment of a dental product, includes at least one metallicType: GrantFiled: April 17, 2003Date of Patent: August 3, 2004Assignee: Ivoclar Vivadent AGInventors: Heinrich Feichtinger, Rudolf Jussel
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Patent number: 6617971Abstract: An alarm device for signaling when an object reaches a specified temperature. The alarm device includes a thermometer for detecting the temperature of the object. The device further includes a switch element which is closed when the thermometer indicates the specified temperature. The closed switch element triggers an alarm, such as a light or a buzzer, which will signal a person monitoring the temperature that the specified temperature has been reached.Type: GrantFiled: September 26, 2001Date of Patent: September 9, 2003Inventor: John Keller
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Patent number: 6086249Abstract: The invention concerns a method to reproduce and display the winding temperature of an electric power transformer by deriving the measured and displayed temperature from the temperature of the coolant cooling the power transformer and the temperature of an electric heater fed with a current proportional to the load of the power transformer. A thermometer system is used for measuring the temperature and comprises of a hollow sensor element (7) and a mechanical transducer (2) connected through a capillary tube (6) with said element (7) to actuate a mechanical display and comprising several switches, the mutually connected cavities of sensor element (7), capillary tube (6) and transducer (2) subtending a closed pressure chamber filled with a test medium of which the pressure changes in relation to pressure.Type: GrantFiled: November 21, 1997Date of Patent: July 11, 2000Inventor: Manfred Urich
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Patent number: 5816708Abstract: In the thermometer of the present invention a hollow sensing element (9) is connected by a capillary tube (18) to the hollow space of a Bourdon spring (19). The hollow sensing element (9), the capillary tube (18) and the mechanical measuring unit are filled with a substance whose pressure varies with temperature thus causing the Bourdon spring (19) to actuate a mechanical indicating device (5, 6). The capillary tube (18) or the hollow space of the mechanical measuring unit (2) has connected thereto an electric measuring unit (3) which comprises a measuring chamber (15) enclosed by a rigid casing (12), an electric pressure measuring cell (16) bounding the measuring chamber (16), and an electric measuring transducer (4) connected to the pressure measuring cell (16) for generating a transmittable signal.Type: GrantFiled: February 24, 1997Date of Patent: October 6, 1998Inventor: Manfred Urich
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Patent number: 5772327Abstract: For measuring and controlling the temperature of a splice portion between two optical fiber (1, 1') ends, during the splicing process when the material of the ends is heated to be fusioned, the time-dependency of the surface tension effect for viscous liquids is utilized. Then the fiber (1, 1') ends are placed for splicing with a relatively large lateral offset in the retainers (39) of a fiber splicer and are spliced by the heat of an electric arc generated between the welding electrodes (43). The heating of the fiber ends is continued, whereby the offset of the fiber ends will gradually decrease due to the surface tension. The offset is then measured at different times during the continued heating and from these determined values and the times when they were measured the temperature of the heated fiber end portions is determined. This temperature value may then be compared to a predetermined set value for control of the heating of the splice region.Type: GrantFiled: April 26, 1996Date of Patent: June 30, 1998Assignee: Telefonaktiebolaget LM EricssonInventor: Wenxin Zheng
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Patent number: 5680107Abstract: Thermally induced movement between stacked conical, pyramidal "cones" and segments of such cones can be used to provide alarm signals and control the distance between and orientation of objects. Preferably, each of the stacked cones must have a lesser characteristic of thermal change than the cone next most proximate to the base cone.Type: GrantFiled: October 7, 1994Date of Patent: October 21, 1997Inventor: Yoram Curiel
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Patent number: 5366292Abstract: For use in a measuring and analysis instrument, a sensor including a sensor element responsive to changes in a quantity to be measured by the instrument. The sensor element is formed from a deformation heat-recoverable material having a predetermined range of temperatures in which recovery occurs. The sensor may include a control mechanism for maintaining the temperature of the sensor element substantially within the predetermined range. The sensor element forms a part of a circuit including a power source, and the control mechanism may include apparatus for selectively heating the sensor element. The sensor element is operatively connected to a signal device for sensing a physical characteristic of the sensor element and generating signals corresponding to the characteristic sensed. The signal device may include a temperature sensor, a force sensor, or a light sensor.Type: GrantFiled: February 1, 1990Date of Patent: November 22, 1994Assignee: Leybold AGInventor: Guenter Voss
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Patent number: 5255981Abstract: A temperature sensor has a body whose thermal expansion is evaluated in the event of a change in temperature, there being deposited on the body a layer which has a layer structure containing less than 8% by weight of phosphorus, preferably containing up to 3% by weight of phosphorus, up to 2% by weight of an element of main group IV or main group V, in particular antimony, and up to 5% by weight of a transition metal element, in particular cobalt. The percentages by weight resulting from the sum being increased up to 100% with nickel. The layer modifies the magnetic flux in a coil arrangement comprising at least one coil. This change in the magnetic flux in the coil arrangement is evaluated and the change in the magnetic flux being detected as a change in the inductance. The change in length of the body and the change in temperature are deduced therefrom.Type: GrantFiled: January 29, 1993Date of Patent: October 26, 1993Assignee: Mercedes-Benz AGInventors: Edmund Schiessle, Khaldoun Alasafi, Ralf Gutohrlein
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Patent number: 5207766Abstract: Vibrations of a body are measured by attaching a vibrating element to the body, directing a beam of electromagnetic energy onto the vibrating element and collecting reflected electromagnetic energy from the vibrating element. The magnitude of the reflected electromagnetic energy is processed to determine vibration and/or temperature of the body. The magnitude of the reflected light is preferably a function of second degree of the position of said vibrating element. Processing said magnitude of reflected electromagnetic energy is preferably done by a Fourier series up to a second harmonic.Type: GrantFiled: July 31, 1991Date of Patent: May 4, 1993Assignee: Consiglio Nazionale Delle RicercheInventors: Giuliano Conforti, Andrea A. Mencaglia, Mario Brenci, Anna G. Mignani
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Patent number: 4929090Abstract: A temperature indicating label includes a rectangular, insulative panel scribed on its faces with intersecting grooves in which electrodes of a galvanic reaction are bedded. One of the electrode sets is consumed in the course of electrolytic reaction and when consumed will expose the electrolyte admixed with a dye. A switching circuit selectively steps in sequence across the consummable electrodes while another portion of the circuit selects the other electrodes in accordance with temperature.Type: GrantFiled: October 24, 1988Date of Patent: May 29, 1990Inventor: Isabelle Grahm
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Patent number: 4893945Abstract: A temperature sensor having a heat sensing portion including silicone rubber having thermal expansion and contraction characteristics which are linear with respect to changes in temperature, and a responsively operating portion adapted to operate by thermal expansion and contraction of the silicone rubber. The silicone rubber expands as the ambient temperature around the heat sensing portion rises, and the silicone rubber contracts as the ambient temperature decreases. The operating portion operates in response to this expansion or contraction, thereby detecting the temperature change.Type: GrantFiled: July 10, 1987Date of Patent: January 16, 1990Assignee: Nibex Co., Ltd.Inventors: Teruo Okano, Tomomi Nagata
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Patent number: 4699519Abstract: A grain temperature monitor for use with one or more grain bins, the monitor including one or more temperature sensors, an analog sensor indicator unit, and a non-analog sensor indicator unit. The analog sensor indicator unit provides a signal when one or more of the temperature sensors senses a temperature in the monitored grain that equals or exceeds a predetermined reference temperature. In addition, an operator controllable switch can be manipulated to determine the approximate temperature of the highest sensed temperature. The non-analog sensor indicator unit provides a visual indication as to which of the temperature sensors then currently senses the highest temperature, without regard as to whether such sensed temperature exceeds the predetermined temperature threshold or not.Type: GrantFiled: June 24, 1986Date of Patent: October 13, 1987Assignee: Performance Technology, Inc.Inventor: Gleelynn W. Persson
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Patent number: 4690570Abstract: A C-shaped failure detector for steam traps includes a curved temperature sensitive bi-metal strip positionable against the external surface of a steam or condensate pipe, and two thermally insulative arms, one extending from each end of the strip. The contiguous surface area between the bi-metal strip and pipe varies with the pipe surface temperature, resulting in an amplified response, both in expansion and contraction. A threaded rod is pivotally mounted to one of the arms, and a sleeve threadedly engages the free end of the rod and extends freely through an opening in the other arm. The sleeve is rotated on the rod to selectively position the sleeve with respect to the second arm. The arms move angularly toward or away from each other responsive to temperature changes in the bi-metal strip.Type: GrantFiled: May 19, 1986Date of Patent: September 1, 1987Inventor: Donald W. Wall
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Patent number: 4586383Abstract: A pressure gauge includes a cylindrical member having a flexible plate covering one end. Center flex of the plate is used to measure the force applied by fluid pressure. A low pressure transducer electrically measures the applied force. Pressure is transmitted from the flexible plate to the transducer by hydraulic fluid enclosed in the cylinder by a plastic boot. The boot is sealed to the cylinder by a sweat fit between the cylinder and a coaxial collar. The range of forces that can be measured is controlled by the thickness and diameter of the plate. In addition to pressure, the gauge can be used to measure temperature and orifice opening, and provide an indication of volumetric flow of the fluid.Type: GrantFiled: September 13, 1982Date of Patent: May 6, 1986Inventor: George W. Blomquist
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Patent number: 4541735Abstract: A thermal sensing element containing a heat responsive material having a very high negative coefficient of thermal expansion. The heat responsive material contained therein is a methanol saturated copolymer of hexafluoropropylene and vinylidene fluoride. This thermal sensing element can detect minute temperature changes and can be packaged in a compact container for use in applications where space is limited.Type: GrantFiled: December 24, 1984Date of Patent: September 17, 1985Assignee: General Motors CorporationInventor: Ismat A. Abu-Isa
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Patent number: 4537518Abstract: A temperature sensing unit produces an output signal commensurate with temperature, the output signal serving as a basis for discriminating a temperature above a predetermined threshold temperature as well as a rising temperature gradient over a predetermined period of time. When means for effecting the discrimination operation senses both conditions, a temperature measuring unit begins measuring temperature on the basis of an input from the temperature sensing unit. When said measurement begins, the measuring unit raises the resolution of temperature information from the sensing unit.Type: GrantFiled: March 23, 1984Date of Patent: August 27, 1985Assignee: Terumo Kabushiki KaishaInventor: Masakazu Murase
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Patent number: 4466295Abstract: Photoelastic sensing means, and more particularly photoelastic sensing means capable of providing high sensitivity for measuring pressure, force, displacement, acceleration or inertial force, proximity, temperature and other measurands. The photoelastic sensing means comprises a thin photoelastic member of transparent material having closely spaced top and bottom outer surfaces with peripheral edges and an edge surface extending between the peripheral edges of the other surfaces. Light flux is provided to the edge surface of the member at a first region for transmission by the member along a path to a second region at the edge surface where it is received and detected. The spacing between the top and bottom outer surfaces of the member is relatively small compared to the length of the path of the light flux in the member. The member is supported to produce bending stresses in the member in a direction transverse to the path of the light flux in the member with the application of force to the member.Type: GrantFiled: September 20, 1982Date of Patent: August 21, 1984Assignee: TRW Inc.Inventor: Laurence N. Wesson
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Patent number: 4461584Abstract: A temperature sensing unit produces an output signal commensurate with temperature, the output signal serving as a basis for discriminating a temperature above a predetermined threshold temperature as well as a rising temperature gradient over a predetermined period of time. When a discriminator senses both conditions, a temperature measuring unit begins measuring temperature on the basis of an input from the temperature sensing unit. When the measurement begins, the measuring unit raises the resolution of temperature information from the sensing unit.Type: GrantFiled: September 15, 1982Date of Patent: July 24, 1984Assignee: Terumo Kabushiki KaishaInventor: Masakazu Murase
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Patent number: 4444517Abstract: An electronic clinical thermometer which includes a temperature sensing element for sensing body temperature and converting the sensed body temperature into a corresponding electrical signal, a measuring unit for converting the electrical signal into a digital signal, an arithmetic unit for computing body temperature on the basis of the digital signal, a display unit for displaying the computed body temperature, a battery for supplying each of these loads with electric power, and a magnetic reed switch, having a break-type contact, connected between the battery and the load. The electronic clinical thermometer, in combination with a carrying case, includes a magnet which opens the switch contact of the magnetic reed relay when the thermometer is placed in the case.Type: GrantFiled: September 14, 1982Date of Patent: April 24, 1984Assignee: Terumo Kabushiki KaishaInventor: Masakazu Murase
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Patent number: 4396301Abstract: A system for sensing or detecting changes in and accumulating data relating to variable quantities or conditions, for example temperature, is disclosed. In one instance, the system sensor is a mercury tube thermometer modified with conductors or contacts embedded in the glass walls of the mercury tube. As the temperature rises, the conductive material rises and performs a switching function with the embedded contacts closing an electrical circuit to which the contacts are connected. The circuit components include plurality of logic gates the inputs of which are connected to the switching contacts in a manner such that their outputs are singularly true in a sequence corresponding to the direction of temperature change. In another instance the sensor is a bimetallic strip, coil or thermal Bourdon tube and an arm or pointer needle mounted on an end of the strip or tube rotates in response to changes in the temperature being sensed.Type: GrantFiled: July 15, 1981Date of Patent: August 2, 1983Assignee: Thiokol CorporationInventor: Alfred B. Stucki
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Patent number: 4345471Abstract: A light source for forming an optical path extending across a closed vessel and a light receiving unit for receiving light from the light source are disposed outside the closed vessel. A portion to have its temperature measured as lies in the closed vessel is provided with a temperature detecting device which consists of a temperature sensor and a light interceptive plate. The temperature sensor is formed to be downwardly convex by sticking two members of different coefficients of thermal expansion one over the other (the member of the larger coefficient of thermal expansion being arranged over the member of the smaller coefficient of thermal expansion). The light interceptive plate is arranged over the member of the larger coefficient of thermal expansion. When the portion to have its temperature measured has reached a predetermined temperature, the temperature sensor inverts the downwardly convex state into an upwardly convex state.Type: GrantFiled: May 9, 1980Date of Patent: August 24, 1982Assignee: Hitachi, Ltd.Inventors: Fumihiro Endo, Toshio Ishikawa, Jun Ozawa, Yuzuru Kamata, Shigeo Shiono