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7277267 Multi-layer capacitive transducer  
A capacitive transducer of multi-layer construction includes two rotor plates supported by flexible springs, the plates being spaced apart and rigidly connected by a stem. One rotor plate my be...
7203052 Method of fabricating MEMS tunable capacitor with wide tuning range  
A MEMS tunable capacitor and method of fabricating the same, includes a plurality of fixed charge plates on a substrate, the plurality of fixed charge plates having a same height, being arranged in...
7134785 Capacitance temperature sensor and temperature measuring device  
A capacitance temperature sensor in which temperature is measured by detecting capacitance of a parallel plate condenser which comprises a dielectric material comprising strontium titanate single...
7085121 Variable capacitance membrane actuator for wide band tuning of microstrip resonators and filters  
A device for varying the capacitance of an electronic circuit is disclosed. The device comprises a flexible membrane located above the electronic circuit, a metal layer connected to the flexible...
7055341 High efficiency cooling system and heat absorbing unit  
The cooling system allows the liquid coolant discharged from the pump to flow into the evaporation chamber. The liquid coolant passes through the atomizer. Minute droplets of the atomized coolant...
7046497 Multi-layer capacitive transducer  
A capacitive transducer of multi-layer construction includes two rotor plates supported by flexible springs, the plates being spaced apart and rigidly connected by a stem. One rotor plate my be...
7042699 Vacuum variable capacitor  
A vacuum variable capacitor is includes of a vacuum container which is formed by sealing both end of a cylindrical insulator with a fixed-side end plate and a movable-side end plate, a movable...
7042698 MEMS tunable capacitor with a wide tuning range and method of fabricating the same  
A MEMS tunable capacitor and method of fabricating the same, includes a plurality of fixed charge plates on a substrate, the plurality of fixed charge plates having a same height, being arranged in...
7031137 Variable micro-capacitor with a high ratio and a low operating voltage  
A MEMS micro-capacitor having a variable capacity is disclosed. The MEMS micro-capacitor has at least one fixed electrode ( 3 ) positioned on one surface of a substrate ( 1 ); bending means with...
7030463 Tuneable electromagnetic bandgap structures based on high resistivity silicon substrates  
Electrically tunable electromagnetic bandgap (“TEBG”) structures using a ferroelectric thin film on a semiconductor substrate, tunable devices that include such a TEBG structure, such as a...
6975499 Vacuum variable capacitor with energization and heat shielding bellows  
A vacuum variable capacitor includes an energization bellows arranged in a vacuum vessel and having ends mounted to a movable-electrode support plate and a movable side-end plate, respectively, a...
6714400 Link for watch bracelet  
The invention concerns a particular link structure ( 1 ) for a wristwatch including decorative elements made of hard materials such as ceramics. The sintering step carried out during manufacturing...
6625004 Electrostatic actuators with intrinsic stress gradient  
An electrostatic actuator with an intrinsic stress gradient is provided. The electrostatic actuator comprises an electrode and an electrostatically actuated beam fixed at one end relative to the...
6433375 Tunable microwave devices  
An electrically tunable device, particularly for microwaves, includes a carrier substrate, conductors, and at least one tunable ferroelectric layer. Between the conductors and the tunable...
6268995 Double-bellows vacuum variable capacitor  
A vacuum variable capacitor includes a vacuum bellows for allowing a pressure differential between two volumes inside the capacitor, wherein one of the volumes may be a vacuum volume. The vacuum...
6215644 High frequency tunable capacitors  
A tunable capacitor having low loss and a corresponding high Q is provided. The tunable capacitor includes first and second substrates having first and second capacitor plates disposed,...
5788376 Temperature sensor  
A temperature sensor apparatus comprising: a capacitor with first and second conductors and a dielectric material between the conductors; a frequency generator coupled to the capacitor and...
5635812 Thermal sensing polymeric capacitor  
A thermal sensing polymeric device (110) such as a capacitor is fabricated from a layer of a copolymeric material (112) including polyvinylidene fluoride and a fluorinated ethylene. The fluorinated...
5574620 Electrical component resistant to damage by infrared radiation  
In an electrical component that contains materials that can physically and/or chemically change under the influence of heat (infrared) radiation required during processing of the component and...
5483414 Electrical impedance detector for measurement of physical quantities, in particular of temperature  
Electrical impedance detector for measurement of physical quantities, in particular of temperature. The detector comprises electrodes (11,14), between which the electrical impedance (C;R) that...
5407276 Diamond temperature and radiation sensor  
A temperature sensor comprises a body of insulating diamond material and a pair of spaced apart electrical contacts applied to the body. The body has a predetermined thickness between the contacts,...
5359491 Capacitive sensor comprising a conductive front surface for forming a capacitor plate, and a coaxial cable shielded by a mineral insulator  
The capacitive sensor comprises a sensor body which includes a housing, a conductive front surface and insulation means provided between the conductive surface and the housing; it also comprises a...
5349831 Apparatus for cooling heat generating members  
An apparatus for cooling heat generating members such as semiconductor devices on a multichip module. A discharge device discharges cooling liquid for contacting the heat generating members and...
4920450 Temperature dependent capacitor  
A temperature dependent capacitor formed from thermostatic bi-metallic strips is used to compensate the resonant frequency of a microstrip patch antenna array structure for dielectric constant...
4883366 Temperature sensor  
A temperature sensor includes a capacitor having electrodes between which a dielectric body having its dielectric constant variable depending on the variations of ambient temperature is interposed,...
4710550 Method of using a dielectric probe to monitor the characteristics of a medium  
A dielectric probe for use with conventional frequency and time domain impedance analyzers comprises two chemically resistant electrodes deposited in an interdigitated pectinate configuration on...
4639697 Temperature compensation circuitry  
A surface acoustic wave (SAW) device provides a phase shift and a first predetermined phase shift variation as a function of temperature. A passive network including a passive, reactive component...
4545254 Materials and methods for pressure and temperature sensors at cryogenic temperatures  
Capacitive pressure and temperature sensing devices for use at cryogenic temperatures are provided utilizing a quantum ferroelectric pyrochlore ceramic material as the dielectric. The ceramic...
4419310 SrTiO.sub.3 barrier layer capacitor  
Formulations for a variety of air sintered ceramic barrier layer capacitors are provided wherein from 0.3 to 1.7 mole % of donor material is added to a strontium titanate and the relative amounts...
4405080 Electronic temperature control from a mechanical temperature responsive means  
By means of a moveable insulating member that has two electrically conductive areas that are separated by a nonconductive area it is possible to build a mechanically controlled electronic...
4361799 Over-temperature sense and locate device  
The invention is an over-temperature sensor and locator utilizing a temperature sensitive cable comprising (1) an electrical conductor, (2) a dielectric, and (3) a solid, conductive polymeric,...
4348611 Ferroelectric or pyroelectric sensor utilizing a sodium nitrite layer  
A pyroelectric or ferroelectric sensing element consists of a substrate with a thin layer of sodium nitrite. Electrodes may be applied to both sides of the sodium nitrite layer, or, alternatively,...
4322775 Capacitive pressure sensor  
The disclosure relates to a capacitive pressure transducers which includes a flexible diaphragm. The flexibility of the diaphragm varies with temperature and thus different capacitance values...
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...
4213797 Radiant energy to electric energy converter  
Radiant energy is converted into electric energy by irradiating a capacitor including an ionic dielectric. The dielectric is a sintered crystal superionic conductor, e.g., lanthanum trifluoride,...
4195326 Predetermined temperature coefficient capacitor  
A screen printed capacitor to provide a predetermined temperature coefficient of capacitance. The capacitance device utilizes a common electrode with a uniform dielectric layer in conjunction with...
4164147 Temperature sensing apparatus  
A temperature sensor particularly adapted for use with digital displays or controls comprises an oscillator circuit coupled to a capacitor formed of ferroelectric material in order to provide a...
4109456 Ceramic capacitor  
A ceramic capacitor operatively connected to a piezoelectric oscillator for compensating for the temperature dependence of the oscillator frequency is provided for thereby optimizing the accuracy...
4084101 Apparatus for converting radiant energy to electric energy  
Radiant energy is converted into electric energy by irradiating a capacitor including an ionic dielectric having a dipole layer only on or near its surface. The dielectric is selected from the...
3808556 VARIABLE CAPACITOR, ESPECIALLY FOR TEMPERATURE-COMPENSATED ELECTRONIC TIMEPIECE  
An electronic watch or other timepiece has a clockwork driven by an electronic oscillator having a quartz crystal. A variable trimmer condenser is connected in parallel with this crystal for...
3792377 TEMPERATURE COMPENSATED QUARTZ OSCILLATOR CIRCUIT  
A quartz oscillator having a four-terminal quartz vibrator, two of the four terminals being connected with a compensating device for compensating the temperature coefficient of the quartz vibrator...
3774089 TEMPERATURE INDICATING APPARATUS USING OPPOSITELY VARYING CAPACITORS  
A temperature sensitive transducer element includes a structure having a cavity. Each of a pair of inwardly facing conductive surfaces defining the cavity forms a plate of a different one of a pair...
3759104 CAPACITANCE THERMOMETER  
A thermometer having a sensor formed by a three-terminal capacitor with a suitable temperature-sensitive dielectric interposed between the sensing electrodes, with the sensor being connected to a...
3728641 VARIABLE TEMPERATURE COMPENSATING CAPACITOR FOR CRYSTAL OSCILLATORS  
A temperature sensitive capacitor having a dielectric such as BaTiO 3 , wherein capacitance varies in response to temperature, is provided with means for manually changing the capacitance thereof...
3691841 TEMPERATURE COMPENSATOR  
A constant plate area and spacing capacitance temperature probe for insertion into a fluid stream which is non-responsive to changes in pressure or content of the fluid investigated. Means for...
3673305 CAPACITIVELY GRADED MODULAR POTHEAD FOR H-V CABLE  
Improved electrical insulating devices, preferably modular, including series connected capacitances provided by flat contacting alternated insulating and conducting elements. The insulating...
3657644 THERMODIELECTRIC RADIOMETER UTILIZING POLYMER FILM  
A thermodielectric radiometer employing a polymer film or a capacitor dielectric. The film is charged to a suitable voltage gradient and, when it is heated by absorbed radiation, it produces a...
3649891 CAPACITIVE CRYOGENIC THERMOMETER  
A capacitive device suitable for use in cryogenic temperature measuring. The dielectric material used in the capacitor is made from a composition in which strontium titanate, SrTiO 3 , has been...
3646412 CYLINDRICAL CAPACITORS WITH GAS DIELECTRICS  
In a cylindrical capacitor having a gaseous dielectricum the relation between the coefficient of expansion of the material of the inner cylinder of the capacitor and the gas pressure, which is held...
3614482 DC VOLTAGE INVERTER  
A capacitor operating at a temperature-autostabilized state, having a pair of exciting electrodes and a ferroelectric dielectric arranged therebetween. An AC generator is connected between the...
Matches 1 - 50 out of 150 1 2 3 >