| Patent Number |
Title Of Patent |
Date Issued |
| 7553458 |
Alcohol sensor using the work function measurement principle |
June 30, 2009 |
| An alcohol sensor having gas-sensitive layers made of polymers or inorganic oxides wherein a signal is read out by means of work function change which is produced in the form of a field-effect transistor. |
| 7459732 |
Gas-sensitive field-effect transistor with air gap |
December 2, 2008 |
| A gas-sensitive field-effect transistor may be formed from a substrate with a gas-sensitive layer and a transistor processed separately and then assembled. The substrate may be patterned to form spacers by which the height of an air gap between the transistor and the sensitive layer may |
| 7456969 |
Device and method for monitoring the oxygen concentration in an aircraft tank |
November 25, 2008 |
| The invention relates to a device for monitoring the oxygen concentration in an aircraft tank. The device includes an absorption measuring section equipped with a laser or laser diode (6), a photodiode (7), a temperature sensor (8) and a reflector (5) for carrying out laser spectroscopy |
| 7085033 |
Electrochromic color system |
August 1, 2006 |
| The invention relates to an intelligent color system that recognizes the ambient color and adapts its color accordingly according to the chameleon effect. The inventive system is obtained by combining an electrochromic color system with a semi-transparent array of photodetectors, for exa |
| 6969009 |
Injector, especially fuel injection valve, with a piezoelectric actor |
November 29, 2005 |
| The jacket surface of the piezoelectric actor body (1) is surrounded by an injector housing (9), maintaining an intermediate space and is cooled by direct contact with an inert fluid which does not conduct electricity (6), forming a fluid space in the injector housing (9) which is filled |
| 6967429 |
Power output stage for capacitive loads |
November 22, 2005 |
| A power output stage for capacitive loads includes: an energy storage inductance, having one end connected to a reference potential and an opposite end connected on the input side to a power supply connection and on the output side to a secondary energy storage capacitance; a prima |
| 6915678 |
Ozone sensor operating according to the work function measurement principle |
July 12, 2005 |
| An ozone sensor has an ozone-sensitive layer containing an ozone-sensitive material which is encapsulated in a polymer or in a polymer mixture or is coated by at least one polymer or polymer mixture. Advantages result from a longer service life of the ozone-sensitive materials which, bec |
| 6513364 |
Hydrogen sensor |
February 4, 2003 |
| A hydrogen sensor employs a hydrogen-sensitive semiconductor layer that is applied to a carrier substrate. The hydrogen-sensitive semiconductor layer includes a first and second semiconductor layers that consist of strontium titanate so as to compensate for temperature fluctuations in th |
| 6367350 |
Method and apparatus for stroke transmission |
April 9, 2002 |
| A stroke transmission apparatus includes a displaceable stroke element, a drive element and at least one lever, which is respectively seated on the drive element and can be applied to the stroke element and to a bearing, so that with a simultaneous seating of the lever on the stroke elem |
| 6353225 |
Method for the selective detection of gasses and gas sensor for carrying out this method |
March 5, 2002 |
| A method an apparatus uses the narrow-band measurement of the absorption of given spectral lines of a gas using laser light sources, so that the spectrally resolved measurement of individual absorption lines, and thus the selection of an individual gas component, is possible. A laser dio |
| 6311950 |
Fluid metering device |
November 6, 2001 |
| A fluid metering device that employs a sealing element for delivering a metered dose of a pressurized fluid. The sealing element includes a metal bellows sealing element or metal bellows that attaches to a valve needle and a housing. The metal bellows includes a number of corrugated elem |
| 6235243 |
Gas sensor array for detecting individual gas constituents in a gas mixture |
May 22, 2001 |
| A gas sensor array for detecting individual gas constituents in a gas sensor, said array being composed of a carrier member of a non-conductive substrate having a plurality of individual sensor elements formed by semiconductor oxides being applied thereon in a planar arrangement and the |
| 6173912 |
Plate valve for the dosing of liquids |
January 16, 2001 |
| In a plate valve, particularly a cone spray valve, the valve gap, or respectively, seal gap (6) which is present in the open condition is not designed with parallel faces, but with cross-sectional areas which remain the same given increasing radius. This approach applies to a set from th |
| 6148842 |
Compensation element for the compensation of temperature-conditioned length changes of an object |
November 21, 2000 |
| The compensation element is compensating for temperature-conditioned length changes of an object. An injection valve that is fully functional in the entire range of the operating temperatures of a motor requires a device that compensates thermally conditioned length changes of the mechan |
| 6119952 |
Device and method for dosing fluid |
September 19, 2000 |
| A device and method for dosing fluid has a housing enclosing a lifting element and a primary drive hydraulically operable on the lifting element via a hydraulic chamber. The lifting element is disposed within a borehole with a leakage permitting fit. A fluid chamber in communication with |
| 6101865 |
Gas sensor |
August 15, 2000 |
| A porous Al.sub.2 O.sub.3 thick film covers the SrTiO.sub.3 layer of an oxygen sensor, said SrTiO.sub.3 layer being contacted by means of two Pt electrodes and deposited on an Al.sub.2 O.sub.3 substrate. The electrically insulating Al.sub.2 O.sub.3 layer bears a protective layer, whi |
| 6062533 |
Apparatus and method for valve control |
May 16, 2000 |
| A wall-controllable primary drive, for example a piezo actuator, guided in a first bore transfers its stroke motion-commutated onto a secondary-side lifter element guided in a second bore, transmitting said stroke by a piston-hydraulic stroke transmission on the basis of a hydraulic cham |
| 6012327 |
Gas sensor and method for manufacturing the same |
January 11, 2000 |
| A gas sensor and method for manufacturing a gas sensor is provided. In order to increase the selectivity and the sensitivity to a gas to be measured, a gas-sensitive gallium oxide layer of a gas sensor is coated with a filter layer that comprises silicon dioxide. In an alternative em |
| 5889198 |
Method for detecting and measuring CH.sub.4 with GA.sub.2 O.sub.3 sensor |
March 30, 1999 |
| A method for detecting CH.sub.4 with a Ga.sub.2 O.sub.3 sensor, and a method for measuring CH.sub.4 concentration with a Ga.sub.2 O.sub.3 sensor is provided. In order to solve the problem associated with the masking or disturbing effect alcohol has on the detection of methane with a gall |
| 5875764 |
Apparatus and method for valve control |
March 2, 1999 |
| An easily controllable primary drive (5) guided in a first bore (3), for example a piezo actuator, transmits its stroke by a piston-hydraulic stroke transmission with a hydraulic chamber (2) onto a stroke element (70) of the secondary side guided in a second bore (4). The pressure in a |
| 5857662 |
Electrohydraulic stop device |
January 12, 1999 |
| A electrohydraulic stop device contains a piezoelectric actuator (P) which acts on two coupled hydraulic stroke transformers having identical transmission ratios. Essential components of the stop device are the pressure piston (DK) driven by the actuator (P), the lifting piston (HK) |
| 5850109 |
Magnetostrictive actuator |
December 15, 1998 |
| Drive elements whose physical volume is considerably smaller than piezoelectric actuators for comparable mechanical characteristics and actuation travels can be developed on the basis of the magnetostrictive material Tb.sub.x Dy.sub.1-x Fe.sub.2 (Terfenol). Despite these characterist |
| 5840255 |
Gas sensor |
November 24, 1998 |
| In order to avoid measurement signal drift, a gas sensor has a gas sensitive layer which is provided on its upper side with a measuring electrode structure and on its lower side with an electrically conductive layer. |
| 5824271 |
Gas sensor |
October 20, 1998 |
| A substrate carrying a first electrode and a second electrode, the first and second electrodes being disposed adjacent to one another, the first electrode being disposed between the substrate and a gas-sensitive component, the gas sensitive component comprising an n-type semiconductor, |
| 5767388 |
Methane sensor and method for operating a sensor |
June 16, 1998 |
| A sensor has a temperature in a range from 700.degree. to 850.degree. C. for detecting methane, and an oxygen-sensitive semiconducting metal oxide. A method for operating a gas sensor having two electrodes, an oxygen-sensitive semiconducting metal oxide conductively connecting the el |
| 5685485 |
Apparatus for apportioning and atomizing fluids |
November 11, 1997 |
| A device is provided which allows exact apportioning and controllable atomization of fuel as necessary for various operating conditions of an internal combustion engine. The apportioning ensues with an apportioning aperture that can be closed via a valve needle. Separately therefrom, the |
| 5635628 |
Method for detecting methane in a gas mixture |
June 3, 1997 |
| A method and apparatus for detecting methane in a gas mixture that may contain commonly used solvents including alcohols and acetones is provided which measures a change in electrical resistivity, electrical conductivity or relative permeability caused by the presence of methane gas at a |
| 5540047 |
Method for reducing the nitrogen oxide concentration in the exhaust of an internal combustion en |
July 30, 1996 |
| The method reduces the nitrogen oxide concentration in the exhaust of an internal combustion engine. A noticeable reduction in the NO.sub.x emission of a diesel motor can be achieved by applying the Selective Catalytic Reduction (SCR) method. In this method, ammonia is injected into |
| 5505073 |
Sensor having a sensor element arranged in a housing |
April 9, 1996 |
| A sensor assembly for sensing gaseous or fluid medium such as sensing oxygen within exhaust gas of an automobile. The assembly provides a sensor element within a housing mounted within a S-shaped flow channel between a medium entry aperture and exit aperture. A shield is provided upstrea |
| 5430428 |
High-temperature sensor made of metal of the platinum group |
July 4, 1995 |
| A rapid temperature sensor formed of a metal from the platinum group is provided. The rapid temperature sensor includes a substrate over which a platinum resistive layer is provided. A double layer, forming a passivation layer, is provided over the platinum resistive layer to prevent |
| 5251470 |
Housing for fast exhaust gas sensors for a cylinder-selective lambda measurement in an internal |
October 12, 1993 |
| A housing for a fast exhaust gas sensor for cylinder-selective lambda measurements in an internal combustion engine comprises a hollow-cylindrical housing having at least two slot shaped openings that are arranged rotationally symmetrical over the circumference of the wall of the hou |
| 5228333 |
Pressure and heat-flow sensor for the combustion chamber of internal combustion engines |
July 20, 1993 |
| Integrated design of a combustion pressure sensor (11, 12, 13, 14) and combustion heat-flow sensor (21) which is suitable for determining a physical variable of the combustion process of an engine. |
| 5199641 |
Fuel injection nozzle with controllable fuel jet characteristic |
April 6, 1993 |
| A fuel injection nozzle for a combustion engine not only has a valve for alternately opening and closing the nozzle, but also has a part which undergoes alternating stroke movement, either longitudinally or transversely. The alternating stroke movement changes the opening angle of th |
| 5157412 |
Laser beam-induced color printing |
October 20, 1992 |
| Laser-induced color printing with means with which the printing color of a micro-capsule to be impinged by the laser beam (12) is identified. These means are a fluorescence transformer material as a constituent of the content of the micro-capsules (3) or an additional white light ray wit |
| 5085197 |
Arrangement for the detection of deficiencies in a tank ventilation system |
February 4, 1992 |
| With the present tank ventilation system formed of a fuel tank, an active carbon filter, a control unit, a lambda probe, a tank ventilation valve and a flow sensor it is possible to recognize defects at the connecting lines and the ventilation valve immediately. For the recognition of th |
| 4831259 |
Pyrodetector suited for movement-selective and direction-selective detection |
May 16, 1989 |
| A pyrodetector, which is both movement selective and directional selective, has preferably a foil supporting detector elements relative to a concave mirror which may have a spherical curve surface, a spherical-parabolic curve surface or a curve surface between a spherical surface and a |
| 4778770 |
Process for making sensor elements in a retaining frame for a pyrodetector |
October 18, 1988 |
| A sensor element arrangement for a pyrodetector has a concave mirror with a sensor element arranged at a focus of the concave mirror and further sensor elements arranged laterally therefrom. Electrodes of both polarities are present on each side of the film, these electrodes being re |
| 4751388 |
Sensor element in a retaining frame for a pyrodetector and method for the manufacture thereof |
June 14, 1988 |
| A sensor element arrangement for a pyrodetector has a concave mirror with a sensor element arranged at a focus of the concave mirror and further sensor elements arranged laterally therefrom. Electrodes of both polarities are present on each side of the film, these electrodes being re |
| 4716294 |
Pyrodetector for the detection of a body entering into its detection area |
December 29, 1987 |
| A pyrodetector having a concave mirror containing a sensor element arranged in a focus thereof. The sensor element is on a film and is distinguished by a compact structure. The concave mirror is formed of a body having a rectangular cross-section, of a reflector part, and of sidewalls |
| 4423347 |
Positioning element with a piezo-ceramic body |
December 27, 1983 |
| An electrically actuated positioning element system utilizes a positioning element formed of piezo-electrical bodies each formed of a plurality of lamellae having electrodes. The lamellae have a length substantially greater than their thickness and upon application of an electrical volta |
| 4371778 |
Electric heating device employing PTC heating element for preheating of heating oil |
February 1, 1983 |
| A heating device for preheating heating oil flowing through a pipe has a heat conduction body to which a plate-shaped ceramic PTC resistance heating element is connected in heat exchange-relationship. The heating element has a thickness in the range of 0.5 to 2 millimeters, a Curie t |
| 4331861 |
Positive temperature coefficient (PTC) resistor heating device |
May 25, 1982 |
| A heating device has a PTC resistor plate as the heating element and is covered with an insulating body. Between the heating element and the insulating body, on each of opposite surfaces of the heating element, ductile metal layers, preferably aluminum, are provided under a permanent |
| 4292499 |
Electronic calcification indicator for flow heaters heated by PTC resistors |
September 29, 1981 |
| A system is disclosed for indicating when a flow heater used for vaporization of water and heated by PTC resistors as heating elements therein must be decalcified. Within the flow heater a PTC resistor element is located at a water entry and also at a water exit region. A main PTC he |
| 4230935 |
Immersion heater |
October 28, 1980 |
| An immersion heater is disclosed having a heating member with a small thickness and comprised of PTC thermistor material. The heating member has the same heat contact between each of its two major surfaces and the medium to be heated. A Curie temperature T.sub.C and a specific resistance |
| 4223208 |
Heater with a ferro-electric ceramic heating element |
September 16, 1980 |
| A heater is disclosed having a PTC thermistor heating element rigidly wedged in an intermediate space of the member to be heated by use of at least one wedge-shaped member. The wedge-shaped member has a surface which is at least the size of the heating elment so an optimum heat transmiss |
| 4177375 |
Heating device having an optimized heating element of PTC thermistor material |
December 4, 1979 |
| A heating device is disclosed having a disc-shaped heating element consisting of PTC thermistor material typically operated by a network voltage of 220 volts. The PTC thermistor material has a cut-off control property at a desired cut-off temperature so as to minimize further heat ri |
