Patent application number | Description | Published |
20090034140 | Circuit Arrangement for Providing a DC Operating Voltage - The invention relates to a circuit arrangement for providing an operating DC voltage from a mains voltage, more particularly to operating circuits comprising a clocked electronic converter. Such operating circuits are preferably used for lamps or other light sources. The present invention protects such circuit arrangements from transient mains overvoltages. As soon as a mains overvoltage occurs a diverter switch Th connects the voltage-sensitive switch S | 02-05-2009 |
20090160356 | Drive Circuit for a Switchable Heating Transformer of an Electronic Ballast and Corresponding Method - The drive signal for a switchable heating transformer of an electronic ballast should be capable of being produced in a simple manner. For this purpose, the invention provides for an oscillating inverter voltage, which has a variable inverter frequency, to be tapped off, for example, at the half-bridge center point. The inverter frequency is then preferably converted into a drive signal by a charge pump (C | 06-25-2009 |
20100102739 | CIRCUIT FOR CONTROLLING A FLUORESCENT LAMP, METHOD FOR OPERATING THE CIRCUIT, AND SYSTEM COMPRISING THE CIRCUIT - In various embodiments, a circuit for driving a fluorescent lamp is provided. The circuit may include a half bridge including a first switch and a second switch; a drive unit for driving the first switch and the second switch, it being possible for a predetermined state to be established using the drive unit, and it being possible for the driving of the first and the second switch to be modulated as a result of the predetermined state using the drive unit. | 04-29-2010 |
20100156299 | Ballast for a Discharge Lamp With Adaptive Preheating - The present invention relates to an electronic ballast for discharge lamps (LA) which have preheatable electrodes (E | 06-24-2010 |
20100202173 | CIRCUIT ARRANGEMENT COMPRISING A VOLTAGE TRANSFORMER AND ASSOCIATED METHOD - A method for operating a circuit arrangement is provided. The method may include coupling a second connection of a control device to a connection that provides an alternating signal during operation of the circuit arrangement; in the control device: generating a trigger signal for the control electrode of the mode switch that is correlated with the sum signal from the signal at the connection for providing an alternating signal and the control signal; and providing the trigger signal at the output of the control device. | 08-12-2010 |
20100237791 | ELECTRONIC BALLAST AND METHOD FOR OPERATING AT LEAST ONE FIRST AND SECOND DISCHARGE LAMP - An electronic ballast for operating at least two discharge lamps is provided, which may include a starting detection apparatus for detecting whether one of the discharge lamps has been started; wherein a drive circuit includes an input, which is coupled to a starting detection apparatus, wherein a threshold value entry apparatus is designed to enter a second threshold value for a setpoint value of a total current through at least two inductances, wherein the second threshold value has a smaller magnitude than a first threshold value; and wherein the drive circuit is designed to drive a first electronic switch and a second electronic switch taking into consideration the first threshold value as setpoint value prior to detection of the starting of a discharge lamp by the starting detection apparatus, and taking into consideration the second threshold value as setpoint value. | 09-23-2010 |
20110163692 | Circuit Arrangement and Method for Operating a Light Source - A method for operating at least one light source, in which an input voltage (U | 07-07-2011 |
20120112653 | Electronic ballast for operating at least one discharge lamp - An electronic ballast for operating at least one discharge lamp may include an input having a first and a second input connection for coupling to a DC supply voltage; a load circuit having an output; a constant-current transformer which includes a converter throttle, a converter diode and a converter switch, whereby the converter throttle is coupled serially between the first input connection and the load circuit; an activation circuit which is configured to activate the converter switch during operation with an HF signal; wherein at least one component across which a second voltage which is opposite in phase to the first voltage drops during operation is coupled between the internal and the external reference potential. | 05-10-2012 |
20120139435 | Method for Controlling a Voltage Transformer for Overvoltage Protection, Voltage Transformer and Operating Device having a Voltage Transformer - A method for controlling a voltage transformer for operating a switchable load having at least one inductance and a switch, which is activated by a digital control device. When the switch is closed, a magnetizing current flows through the inductance. When the switch is open, a demagnetizing current flows through the inductance. The method comprises the steps of measuring the demagnetizing time of the inductance and, when a maximum value of the demagnetizing time of the inductance is exceeded, storing such an ocurrence as a fault. The load is disconnected by the control device when a predetermined maximum frequency of faults is exceeded. | 06-07-2012 |
20120181945 | ELECTRONIC BALLAST AND METHOD FOR OPERATING AT LEAST ONE DISCHARGE LAMP - In various embodiments, ballast for a discharge lamp includes input and output connections; inverter with bridge circuit with electronic switches and control device for controlling electronic switches, wherein switches are connected in series between input connections, wherein one electronic switch is coupled to first input connection and second electronic switch to second input connection, wherein a bridge midpoint is between electronic switches; including a current measuring device for measuring second electronic switch current; lamp choke series-connected between bridge midpoint and first output connection; capacitor parallel-connected with one of electronic switches; and coupling capacitor; wherein control device is coupled to current measuring device and renders an electronic switch conducting, if negative threshold value is exceeded when electronic switch is rendered nonconducting; or if negative threshold value of current through electronic switch is not exceeded after another electronic switch is rendered nonconducting, wherein control device increases first frequency in second case. | 07-19-2012 |
20120235577 | ELECTRONIC CONTROL GEAR FOR OPERATING AT LEAST ONE LED AND/OR AT LEAST ONE DISCHARGE LAMP - An electronic control gear for operating at least one of at least one LED and at least one discharge lamp is provided. It may include a first terminal for coupling to a phase of an AC voltage supply; a second terminal for coupling to the neutral conductor of the AC voltage supply; a control input for coupling in a control signal of a control apparatus; a first output for coupling to the LED; a second output for coupling to the discharge lamp; a first driver circuit for the LED; a second driver circuit for the discharge lamp; an evaluation apparatus for evaluating the control signal at the control input, the evaluation apparatus comprising a microcontroller, which activates said driver circuits depending on the control signal, wherein a first capacitance is coupled between the second terminal and the control input. | 09-20-2012 |
20120242243 | CIRCUIT ASSEMBLY FOR OPERATING AT LEAST ONE DISCHARGE LAMP - A circuit assembly for operating a discharge lamp is disclosed having DC input terminals, a bridge circuit to implement a first bridge midpoint, an output coupling the discharge lamp thereto and a shunt resistor with a tapping point and a device for detecting overload operation. A device for ignition control of the discharge lamp, having an input for supplying a measurement signal and a switch control device is provided connected to the device for detecting overload operation and the ignition control device. The switch control device is designed to modify control signals for at least a first and second electronic switch as a function of the output signals of the device for detecting overload operation. | 09-27-2012 |
Patent application number | Description | Published |
20090294333 | Centrifugal Separator - Disclosed is a centrifugal separator with an inlet channel for a flow containing coarse and fine particles, a first outlet channel for a flow containing predominantly coarse particles, a second outlet channel for a flow containing predominantly fine particles and a separator chamber with at least one separator device, wherein the separator chamber connects the inlet channel to the first outlet channel and the second outlet channel, and wherein the inlet channel, the separator channel and the two outlet channels form a flow path. To improve the degree of efficiency, as a first separator device, one or more separator pockets are arranged in the separator chamber, which project into the flow path. Also disclosed is a corresponding method for the separation of a flow containing coarse and fine particles. | 12-03-2009 |
20120272875 | Burner for Particulate Fuel - Disclosed is a burner for particulate fuel, in particular made of biomass, with a primary tube and a core tube arranged in the primary tube. The primary tube and the core tube form a primary tube gap and the primary tube gap is configured to guide a flow of particulate fuel and gaseous combustion means from an inlet-side end to an outlet-side opening of the primary tube. In order to prevent the drawbacks occurring when using coarse-grain particles, preferably biomass, as a fuel for dust firing, or at least to reduce them without having to accept an increased outlay for equipment and/or additional energy losses, at least one device is provided for centring the flow within the primary tube in the region of the outlet-side end of the primary tube. | 11-01-2012 |
20140134086 | Method and Multi-Component Nozzle for Reducing Unwanted Substances in a Flue Gas - A method is illustrated and described for reducing unwanted substances by injecting a reactant into a flue gas of a steam generator. In order that the reactant can also be used in larger steam generators and/or combustion chambers, a method is proposed, in which the reactant is injected into the combustion chamber of the steam generator via a reactant opening of a multi-component nozzle, in which an enveloping medium is injected into the combustion chamber through at least one enveloping medium opening arranged outside the reactant opening, and in which the enveloping medium at least partly envelops the reactant in the combustion chamber and in this way at least partly shields the reactant from the flue gas. | 05-15-2014 |
Patent application number | Description | Published |
20130199306 | METHOD FOR OPERATING A RESONANCE MEASURING SYSTEM - A method for operating a Coriolis mass flowmeter in which a simple and reliable detection of a multi-phase flow is implemented by determining at least one first measured value for at least one state variable that is dependent on the amplitude in a multi-phase medium, exciting the measuring tube with the oscillation generator to oscillate at a predetermined oscillation frequency and a first amplitude, and to oscillate with the excitation frequency and a second amplitude, detecting the resulting oscillation of the measuring tube and determining at least a second measured value for the state variable that is dependent on the amplitude in a multi-phase medium from the determined resulting oscillation, and using the deviation of at least one of the first measured value from at least a corresponding second value as an indicator for the presence of a multi-phase flow. | 08-08-2013 |
20130317760 | METHOD FOR OPERATING A RESONANCE MEASURING SYSTEM - A method for operating a Coriolis mass flow measuring device having at least one measuring pipe through which a medium flows, at least one vibration generator, at least a first vibration sensor, at least a second vibration sensor and at least a control and analyzing unit. The detection of measurement variables or diagnosis parameters is achieved with increased accuracy and security in that the control and analyzing unit calculates, at least indirectly and in a ratiometric manner, at least a derived secondary variable based on a primary measurement, wherein interested primary measurement signals are transmitted alternately to the control and analyzing unit via different measurement channels and wherein, based on the various values obtained from the different measurement channels regarding the primary measurement signals, compensation values of the transmitted primary measurement signals are calculated and used as a basis for the calculation of the derived secondary variable. | 11-28-2013 |
20130338943 | METHOD FOR OPERATING A RESONANCE MEASURING SYSTEM AND A RESONANCE MEASURING SYSTEM IN THIS REGARD - Methods and systems are provided for operating a resonance measuring system, including a Coriolis mass flow meter. The resonance measuring system includes an electrical actuating apparatus, an electromagnetic drive, and an oscillation element which interacts with a medium. The electrical actuating apparatus provides an electrical excitation signal that excites the electromagnetic drive. The electromagnetic drive excites the oscillation element to oscillation. A mathematical model of the resonance measuring system depicts the oscillation element and the parameters of the mathematical model are being identified excitation of the oscillation element. The identified parameters and quantities are used for operating the resonance measuring system. | 12-19-2013 |
20150045913 | METHOD FOR PARAMETERIZATION OF A FIELD DEVICE AND CORRESPONDING FIELD DEVICE - A field device and a method for parameterization of a field device are disclosed. The method includes transmitting a parameter value to the field device from a parameterization unit. The method also includes generating a feedback character string from the received parameter value by the field device and the transmitting feedback character string to the parameterization unit. The method further includes outputting the received feedback character string by the parameterization unit so that it is understandable for the user. | 02-12-2015 |
20150177192 | METHOD FOR OPERATING A RESONANT MEASUREMENT SYSTEM - Method for operating a resonant measurement system, especially a Coriolis mass flow meter, so as to be excitable in a linear operating range, the driving terminal current triggered by an electric excitation signal and the driving terminal voltage of the electromagnetic drive triggered by the electric excitation signal are measured. The driving power is determined from the driving terminal current and the driving terminal voltage, and if the driving terminal current exceeds a given maximum driving terminal current, and/or if the driving terminal voltage exceeds a given maximum driving terminal voltage and/or if the driving power exceeds a given maximum driving power, the electric excitation signal is limited to a threshold value such that the driving terminal current remains below the given maximum driving terminal current, and/or the driving terminal voltage remains below the given maximum driving terminal voltage, and/or the driving power remains below the maximum driving power. | 06-25-2015 |
20150219600 | METHOD FOR OPERATING A RESONANCE-MEASURING SYSTEM AND RESPECTIVE RESONANCE SYSTEM - A method for operating a resonant measurement system has at least one: adjustment device, electric actuation device, electromagnetic vibration generator, vibrating element, and vibration recorder. The adjustment device generates an output signal to trigger the electric actuation device, the electric actuation device provides an electric excitation signal to the electromagnetic drive, the electromagnetic drive excites the vibrating element to the same vibration in at least one normal mode, and the excited vibration is sensed by the vibration recorder and is output as an output signal. To approach, maintain and readjust a resonant point as an operating point of the resonant measurement system, the phase difference between the output signal of the vibration recorder and the adjustment device output signal is acquired, an adjustment deviation is calculated from a predefined phase difference and the acquired phase difference, and the adjustment deviation provided to the adjustment device as an input signal. | 08-06-2015 |
Patent application number | Description | Published |
20090120242 | Insulation stripping tool with displaceable knife carrier means - A pliers-type insulation stripping tool includes a pair of blade holders that are removably connected with the pull rod that longitudinally displaces the blades relative to the handle shell when a severed length of insulation is stripped from the insulated conductor. A resilient ejector arrangement in provided for ejecting from the handle shell the length of stripped insulation. In order to permit use of the insulation stripping tool with insulated conductors of various sizes and diameters, a blade depth adjusting device is provided for adjusting the distance between at least one of the blade holders and the associated clamping jaw. | 05-14-2009 |
20090126534 | Insulation stripping tool with striker means - An insulation stripping tool of the pliers-type includes an adjustable pull rod stop device for limiting the extent of travel of the longitudinally displaceable pull rod and the cutting and stripping blades connected thereto, thereby to produce only partial removal of a length of severed insulation layer from an insulated conductor. An adjustable conductor stop device is mounted on at least one of the cutting and stripping blade holders for limiting the extent to which the end of the insulated conductor is inserted into the open mouth of the stripping tool. A stationary scale is mounted on one of the handles adjacent the adjustable conductor stop device. | 05-21-2009 |
20090151522 | Hand grip shell for pliers-type tools - An accessory for pliers-type tools includes a shell that is removably connected with one or both levers of the tool to alter the size of the gripping portion of the tool to conform with the size of the user's hand. Each shell has a generally L-shaped configuration and an outer gripping surface which is arched, preferably in both longitudinal and latitudinal directions, to accommodate the user's hand. In addition, the levers include an opening adjacent to the gripping portion and the shells include a locking mechanism adapted to engage the lever within the opening to connect the shell with the lever. | 06-18-2009 |
20090158900 | Insulation stripping tool - A pliers-type insulation stripping tool includes an adjusting device for adjusting the cutting profile provided by the knife edges of a stack of parallel lamellar cutting blades pivotally connected at one end with a knife holder for independent pivotal movement about a first pivot axis parallel with the tool handle pivot axis. The adjusting device comprises a cylindrical support member that is mounted in the associated knife holder for rotation about an axis parallel with the first pivot axis. The circumferential surface of the support cylinder includes a plurality of segments that are selectively engaged by flat portions of the cutting blades, thereby to define different cutting profiles, respectively. The knife holder is connected for longitudinal displacement on one the clamping jaws of the tool handles, thereby to remove a severed length of the insulation layer from the insulated conductor. | 06-25-2009 |
20090188349 | Knife assembly for insulation stripping tools - A pliers-type insulation stripping tool includes a releasable fastening device for fastening a knife cassette to at least one of the knife carrier members that are longitudinally displaced by the pivotally connected tool handle members to remove a severed length of insulation from a longitudinally-arranged insulated conductor that is clamped between by the tool gripping jaws. A U-shaped resilient fastener spring wire has leg portions that are resiliently biased apart, at least one of the legs containing a laterally extending bulge portion that extends into a corresponding locking slot contained in a side wall of the knife cassette. To release and replace the knife cassette, the protruding free extremities of the leg portions of the spring wire are displaced together, thereby to remove the leg bulge portion from the slot contained in the cassette outer wall. | 07-30-2009 |
20090199682 | Hand grip operating means for an insulation-stripping tool - A pliers-type gripping tool includes a pair of gripping jaws, a pair of pivotally connected hand grip levers for operating the gripping jaws between an open separated condition and a closed gripping condition, and an adjusting device for varying one of the physical operating properties of the tool. In one embodiment, the hand grip levers are sectional, and the adjusting device includes an angle setting arrangement for determining the angular relationship of the sections, thereby to permit use of the tool to engage an object at a relatively inaccessible location. In a second embodiment, at least one of the levers includes a metal lever body member partially enclosed by a synthetic plastic shell member. An adjusting device controls the lateral relative positions of the lever body and shell members to adjust the effective thickness of the hand grips to correspond with the size of the hand of the user. | 08-13-2009 |
Patent application number | Description | Published |
20080315725 | Force Generator - A force generator is configured for attachment to a structure in order to controllably introduce vibrational forces into the structure in order to influence the vibration thereof. The force generator encompasses a flexural arm that is fastenable at least at one end to the structure; and an inertial mass that is coupled to the flexural arm remotely from the fastening end of the flexural arm; the flexural arm being equipped with at least one electromagnetic transducer, and a driving system being provided for the transducer, which system is set up such that by driving the transducer, it warps the flexural arm with the inertial mass and the transducer, and thereby displaces the inertial mass, in such a way that vibrational forces of variable amplitude, phase, and frequency are introducible into the structure. | 12-25-2008 |
20090079301 | Three-Dimensional Stack-Type Piezo Element and Piezoelectric Actuator Having Such a Stack-Type Piezo Element - A three-dimensional stack-type piezo element has at least one surface that is shaped perpendicular to layer planes of the stack, so that, at least in sections, it is not parallel to a stacking direction of the piezo element. | 03-26-2009 |
20130211630 | FORCE GENERATOR FOR MOUNTING ON A STRUCTURE - The invention relates to a force generator ( | 08-15-2013 |
20140132113 | ELECTRIC CIRCUIT WITH POWER AMPLIFIER FOR PIEZOELETRIC ACTUATORS - An electric circuit with one power amplifier (V | 05-15-2014 |
20140217235 | ACTUATOR ARRANGEMENT AND CONTROL SURFACE ARRANGEMENT, ESPECIALLY FOR AN AIRCRAFT - An improved actuator arrangement for operating a driven element with different actuators. The actuator arrangement comprises a first actuator that drives a driven element in a first direction via a first output member and a second actuator that drives the driven element in a second direction opposite to the first direction via a second output member. The first and second actuators are configured to work in a counter-acting manner to move the driven element in the first and second directions. An additional connecting and supporting device is connected between the first and second output members to support the output members to bear transversal forces transversal to the moving direction and/or to bear pre-load force for pre-loading the actuators. | 08-07-2014 |
20140233769 | DIAPHRAGM ARRANGEMENT FOR GENERATING SOUND - The invention relates to a diaphragm arrangement which is intended to be fitted to a structural component or fixing ring for the purpose of generating sound, having two piezo crystals which are fitted opposite one another on either side of an electrically conductive diaphragm which can oscillate, wherein the piezo crystals are each fastened to the diaphragm, which has a connection contact, in an electrically conductive and force-transmitting manner, and the piezo crystals are each electrically conductively connected to a contact plate on their opposite side. In this case, each contact plate has at least one contact strip which extends in the direction of the structural component and of which the end in each case has an electrical connection contact. The diaphragm arrangement can be excited by electrical voltages which can be applied to the three connection contacts. This produces a secure contact-connection during operation and the contact plates act as heat-conducting plates for dissipating heat from the piezo crystals. | 08-21-2014 |
20140265731 | FORCE GENERATOR FOR MOUNTING ON A STRUCTURE - A force generator for mounting on a structure in order to introduce vibrational forces in a controlled manner into said structure for affecting vibrations is provided. The force generator includes at least one spring arm on which a flexural arm having an inertial mass and extending in the direction toward the attaching point is fastened, and having at least one piezo transducer at both ends of the spring arm. The center of gravity of the inertial mass is disposed in the region of the center of the spring arm. Alternatively, two guide springs are disposed on both sides of the spring arm parallel thereto, in order to generate a vibrational motion, wherein the fastening point of the flexural arm comprises an unchanged orientation during the vibrational motion. | 09-18-2014 |
20140341737 | DEVICE FOR REDUCING STRUCTURAL VIBRATIONS OF AIRFOILS - A device for reducing structural vibrations of aerofoils in an aircraft comprises, in the region of the aerfoil tips, at least one force generator ( | 11-20-2014 |
20140345267 | FLUID VALVE ARRANGEMENT COMPRISING A BISTABLE FLUID VALVE - The invention relates to a fluid valve arrangement having a bistable fluid valve for at least one fluid line with a valve body which can be moved into two positions for two switching states, a pressure pulse generator being provided for valve switchover in the feed line for switching over a feed line and a return line between two flow lines, and the fluid valve comprising a reversing unit which has two chambers which are separated from one another by a bistable surface element, the two chambers being connected to the two flow lines and the bistable surface element being operatively coupled to the valve body in order to actuate it. As a result, a bistable fluid valve is provided which can be reversed by way of pressure pulses or pressure flanks and otherwise has no energy requirement. | 11-27-2014 |
20140345731 | BISTABLE FLUID VALVE - A bistable fluid valve is characterized by two valve chambers which are arranged adjacent to one another and are closed off with respect to one another by a partition and each have an inlet opening and an outlet opening situated opposite one another, by an S-shaped elastic strip element which extends through both valve chambers, is articulatedly mounted in the region of the partition and can assume two positions in which it sealingly closes off either one or the other outlet opening, and also by an actuation element which is fastened to the strip element and by means of which the strip element can be switched between the two positions. The fluid valve according to the invention comprises only a single movable component of very low mass, which can thus operate in a fast-reacting manner. | 11-27-2014 |
20150050514 | COATING METHOD, SURFACE LAYER STRUCTURE, AS WELL AS APPLICATIONS - A coating method for producing a function layer on mechanically loaded components or surfaces includes providing or applying a first material layer of a first material or substrate matrix having a mechanical flexibility higher than that of a second material on a substrate constituting the component or the surface, respectively, structuring the first material layer such that the material layer surface of the first material layer, which is opposite to the substrate, obtains a three-dimensionally moulded basic structure with projections and recesses, and coating the material layer surface of the first material layer with a second material layer of the second material in such a way that the second material layer adopts substantially the basic structure of the material layer surface with the projections and recesses. Also, surface layer structures can be produced by this method. | 02-19-2015 |
20150129720 | Device and Method for Deicing and/or Preventing Ice Formation and Profile Element and Aircraft Having Such a Device - In order to maintain a surface region of an aircraft free of ice in a particularly energy-efficient manner, a device for deicing and/or for preventing ice formation is provided on an aircraft. The device includes a heat emitting device for emitting heat at a surface region of the aircraft, the heat emitting device is designed to dissipate heat along a line in order to produce a predetermined breaking point or a predetermined breaking line or parting line in ice accumulating on the surface region. | 05-14-2015 |
20150183530 | Actuator Mounting Method and Method for Producing an Ice Protection Device as well as Mounting Device - An actuator mounting method for mounting at least one actuator involves providing a skin structure and at least one actuator, and fixing the at least one actuator to the inner surface of the skin structure. | 07-02-2015 |