Class 374/188 - Having electrical indication

Subclass of Class 374 - Thermal measuring and testing
Definition: Subject matter having electrical measurement of the mechanical
No. of patents: 29
Last issue date: 01/29/2008

Number	Title	Issue Date
7322744	Temperature measurement device 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 c...	01/29/2008
7012535	Battery operated warning sensor An alarm device for signaling when an object reaches a specified condition. The alarm device includes a sensor for detecting the condition of the object. The device further includes a switch element which is closed when the sensor indicates the specified condition. ...	03/14/2006
6769803	Calibration device for calibrating oven temperatures 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 metallic ...	08/03/2004
6617971	Battery operated temperature warning sensor 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 ...	09/09/2003
6086249	Method and apparatus for simulating and indicating the temperature of the winding of an electric power transformer 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 a...	07/11/2000
5816708	Mechanical-electrical combination thermometer 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 fill...	10/06/1998
5772327	Automatic fusion-temperature control for optical fiber splicers 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 liq...	06/30/1998
5680107	Temperature actuated spacing regulator and alarm 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 cha...	10/21/1997
5366292	Sensor formed from a deformation heat recoverable material having a predetermined range of temperatures in which recovery occurs and used for measuring a physical characteristic of a system 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 rang...	11/22/1994
5255981	Temperature sensor 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 t...	10/26/1993
5207766	Fiber-optic vibration sensor 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 reflecte...	05/04/1993
4929090	Temperature history indicatiang label 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 ...	05/29/1990
4893945	Temperature sensor 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 therm...	01/16/1990
4699519	Grain temperature monitor 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...	10/13/1987
4690570	C-shaped failure detector for steam traps 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 co...	09/01/1987
4586383	Electronic pressure gauge and flow meter 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 transm...	05/06/1986
4541735	Thermal sensing element using methanol saturated fluorocarbon elastomer as the heat responsive material 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. ...	09/17/1985
4537518	Electronic clinical thermometer 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 predeterm...	08/27/1985
4466295	Photoelastic sensing means 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 s...	08/21/1984
4461584	Electronic clinical thermometer 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 predeterm...	07/24/1984
4444517	Electronic clinical thermometer 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 di...	04/24/1984
4396301	Sensing device for detecting changes in variable quantities 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 ...	08/02/1983
4345471	Temperature measurement apparatus 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 vesse...	08/24/1982
4324137	Temperature sensor A temperature sensor including a casing and a core within the casing, where the core includes a bimetallic strip and a magnetically soft amorphous material secured to the strip. A change in temperature causes a deflection in the strip and hence a stress c...	04/13/1982
4279155	Bourdon tube transducer A bourdon tube transducer has included a bourdon tube with a conductive plate electrically separated from the bourdon tube and in parallel with the bourdon tube. As the pressure varies, so does the electrical reactance between the bourdon tube and the con...	07/21/1981
4276776	Temperature/pressure transducer A temperature or pressure gauge capable of providing a magnified output indication of a respective sensed temperature or pressure of a fluid. Overlapping surfaces are movable relative to one another in response to sensed changes in temperature or pressure...	07/07/1981
4196626	Flueric notch filter temperature or density sensor The temperature sensors shown utilize a constant frequency fluidic oscillr to excite resonance tubes, whose frequency response is a function of temperature. The outputs of these sensors control a fluidic amplifier, whose output is rectified and filtered ...	04/08/1980
3995488	Dielectric change sensing device A sensing head for use in the sensing of impedance changes includes a bridge circuit, a first diode and first resistor connected in series and a second diode and a second resistor connected in series. The first and second diodes are connected to a first j...	12/07/1976
3947692	Digital transducers A digital transducer comprises a container having two disparate materials therein defining an interface, the interface being movable through the container responsive to a force, or forces, applied to one, or both, of the materials. A plurality of sensors ...	03/30/1976

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Class 374/188 - Having electrical indication