Patent application number | Description | Published |
20100089727 | SWITCH ASSEMBLY, ELECTRIC CONSUMER AS WELL AS MACHINE TOOL - The invention relates to a switch assembly ( | 04-15-2010 |
20100141186 | ELECTRIC TOOL AND DEVICE SWITCH FOR AN ELECTRIC TOOL - The invention relates to a device switch for an electric tool, in particular a battery-operated electric tool. A power circuit for supplying power of a motor and an electronic circuit for monitoring the temperature, power and current is integrated into the device switch. The invention moreover relates to a method for monitoring an electric tool, in particular an electric tool with rechargeable battery operation. | 06-10-2010 |
20110063817 | SWITCH/CIRCUIT BOARD UNIT FOR INSTALLATION IN A HANDLE OF A HAND-HELD TOOL - A switch/circuit board unit and a hand-held tool equipped with such a switch/circuit board unit are proposed. The switch/circuit board unit is adapted for installation in a handle of the tool and has a switch and a circuit board. The switch/circuit board unit also has a mechanical coupling element for producing a rigid mechanical coupling between the switch and circuit board. The rigid coupling that the coupling element produces between the switch and circuit board allows the arrangement of the switch and circuit board to be embodied as a unit, which can enable maneuvering before installation and permit a simplified installation, and in particular, it is possible to simplify a fastening of the switch and circuit board inside a housing of the tool, and in the accompanying installation of electrical connections, for example in the form of flexible cables, it is possible to avoid an incorrect placement or wedging of cables. | 03-17-2011 |
20130026857 | RESTART PROTECTION FOR BATTERY-OPERATED ELECTRICAL UNITS - A protective system for an electric unit operated by an installable battery pack includes: a control device configured to activate the electric unit in the case of the installed battery pack by operating a main switch; a contact device of the electric unit and a contact device of the battery pack including mutually complementary contact elements, which in each case form a first and a second interface for producing a first and a second electrical connection between the electric unit and the battery pack. In this instance, the contact devices are configured, during the installing of the battery pack, to produce the first electrical connection before the second electrical connection in time. | 01-31-2013 |
Patent application number | Description | Published |
20080255375 | Alkenylsuccinic Anhydrides Formed From Oligomers Of C4-To C8-Olefins And Maleic Anhydride, Processes For Their Preparation And Their Use - Alkenylsuccinic anhydrides obtainable by reaction of maleic anhydride with mixtures of oligomers having at least 12 carbon atoms which are obtainable by oligomerization of a hydrocarbon mixture which comprises at least two olefins having 4 to 8 carbon atoms over a catalyst which comprises a transition metal, processes for the preparation of the alkenylsuccinic anhydrides and their use as sizes in the production of paper, board and cardboard. | 10-16-2008 |
20090073801 | PROCESS AND DEVICE FOR PRODUCING FINELY DIVIDED LIQUID-LIQUID FORMULATIONS, AND THE USES OF THE LIQUID-LIQUID FORMULATIONS - Process for producing finely divided liquid-liquid formulations and apparatus for producing the same, comprising | 03-19-2009 |
20090139677 | AQUEOUS ALKYLKETENE DIMER DISPERSIONS - Aqueous alkyl ketene dimer dispersions which comprise at least 15% by weight of an alkyl ketene dimer and at least one water-soluble cationic starch, aluminum sulfate and at least one condensate of naphthalenesulfonic acid and formaldehyde or lignin sulfonic acid or in each case salts thereof, the dispersions comprising, based in each case on alkyl ketene dimer, from 2 to 50% by weight of aluminum sulfate, and in which the dispersions additionally comprise from 0.1 to 5% by weight of a saturated carboxylic acid having 1 to 10 carbon atoms, benzenesulfonic acid, p-toluenesulfonic acid and/or a mineral acid at an aluminum sulfate content of from 2 to 15% by weight, and the use of the dispersions as engine size and surface size for paper and paper products. | 06-04-2009 |
20090188054 | Aqueous polymer dispersions containing alkenyl succinic acid anhydrides, methods for the production thereof, and use of the same - Aqueous alkenylsuccinic anhydride-containing polymer dispersions which are obtainable by miniemulsion polymerization of hydrophobic monoethylenically unsaturated monomers in the presence of alkenylsuccinic anhydrides, processes for the preparation of such polymer dispersions by polymerizing hydrophobic monomers by a miniemulsion polymerization method in the presence of at least one alkenylsuccinic anhydride and, if appropriate, an alkyldiketene, and use of the resulting aqueous alkenylsuccinic anhydride-containing polymer dispersions as engine and surface sizes for paper and for imparting water repellency to leather, natural and/or synthetic fibers and textiles. | 07-30-2009 |
20150148231 | MIXTURES FOR REDUCING NITROUS OXIDE AND/OR AMMONIA EMISSION FROM SOILS - The present invention relates to an agrochemical mixture for reducing nitrous oxide and/or ammonia emission from soils, comprising: | 05-28-2015 |
Patent application number | Description | Published |
20080307153 | Method and device for reorganizing data in a memory system, in particular for control devices in motor vehicles - A method for reorganizing performance quantity data in a segment of a non-volatile memory. The method encompasses the tasks or operations of generating a cohesive data block at an address space of a working memory, of performance quantity data from a first segment of the non-volatile memory and/or from the working memory, and of copying the data block to a predefined address space of the first or a second segment of the non-volatile memory in a block write operation, the performance quantity data of the data block in essence being written to the predefined address space simultaneously in the block write process. | 12-11-2008 |
20080307159 | Method and control device for operating a non-volatile memory, in particular for use in motor vehicles - A method for the consecutive writing of performance quantity data to a non-volatile memory, in particular in a control device in a motor vehicle. The method encompasses the operations of determining a write address, which defines an address space for the writing of a performance quantity datum to be written, the address space being directly contiguous with a memory area occupied by a previously written performance quantity datum, and of writing the performance quantity datum to be written, to the address space of the non-volatile memory defined by the write address. In the determination operation, the write address corresponds directly to an address datum assigned to the most recently written performance quantity data, which is stored in a referencing datum in the non-volatile memory, or it is determined therefrom with the aid of an address offset that is independent of the size of the previously written performance quantity data. | 12-11-2008 |
20090019213 | Method and control unit for operating a non-volatile memory, in particular for use in motor vehicles - A method for operating a nonvolatile memory, wherein the nonvolatile memory is configured to read out an erased data pattern when reading out a memory area that has not been written in, and performing the operations or tasks of setting a memory area for storing operating variable data that are to be written, providing operating variable data to be written in the nonvolatile memory, checking whether the operating variable data to be written correspond to the erased data pattern of the memory area set, writing the operating variable data in the determined memory area if the operating variable data that are to be written are different from the erased data pattern, and if the operating variable data that are to be written correspond to the erased data pattern, preventing writing the operating variable data in the determined memory area. | 01-15-2009 |
Patent application number | Description | Published |
20110163695 | POWER SUPPLY UNIT AND METHOD FOR CONTROLLING A POWER SUPPLY UNIT - A power supply unit is provided which comprises an AC/DC conversion unit with an input to which an input voltage is coupled and an output to which a DC bus voltage is coupled. The power supply unit furthermore comprises a DC bus capacitor which is coupled to the output of the AC/DC conversion unit. The power supply unit furthermore comprises at least one sub-power supply unit receiving the DC bus voltage as input for providing at least one power supply. The power supply of the at least one sub-power supply unit or part of the load is at least reduced or switched off if the input voltage falls below a predetermined threshold value. | 07-07-2011 |
20110164339 | SURGE PROTECTION CIRCUIT - A surge protection circuit for a circuit having a rectification module. The surge protection circuit includes a first diode, a second diode, a capacitor and a discharge device. The anode of the first diode is connected to a first input of the rectification module, and the anode of the second diode is connected to a second input of the rectification module. The cathodes of the first and second diodes are both connected to the first plate of the capacitor. The second plate of the capacitor is connected to the negative output of the rectification module. The capacitor is configured such that it is consistently charged to substantially the peak value of a supply voltage during normal operation between surge events. The discharge device is connected to the first plate of the capacitor and is configured to discharge the capacitor when the voltage across the capacitor is in excess of the peak of the maximum value of the normal supply voltage and not discharge the capacitor when the voltage across the capacitor is not in excess of the peak of the maximum value of the normal supply voltage. | 07-07-2011 |
20110188270 | CIRCUIT - A circuit comprising a power factor correction stage having a DC input, a ground input, a DC output and a ground output; a capacitor; a diode; and discharge means. A first terminal of the diode is connected to an input of the power factor correction stage, a second terminal of the diode is connected to the first plate of the capacitor; and the second plate of the capacitor is connected to the other input of the PFC stage. The discharge means is connected to the capacitor and is configured to discharge the capacitor such that it contributes to the output of the PFC stage when the level of a signal at the input of the PFC stage falls below a threshold value. | 08-04-2011 |
20110188273 | POWER FACTOR CORRECTION STAGE - A power factor correction stage comprising: an input terminal configured to receive an input signal; an output terminal configured to provide an output signal; a first converter stage and one or more further converter stages, wherein each of the converter stages is connected to the input terminal and the output terminal, and each converter stage comprises a switch; and a controller configured to operate the switches of the converter stages. The controller is configured to operate the switch of the one or more further converter stages at a period of time after operation of the switch of the first converter stage for a current switching cycle, wherein the period of time corresponds to a proportion of the switching frequency for an earlier switching cycle that does not correspond to substantially the period of the earlier switching cycle divided by the number of converter stages. | 08-04-2011 |
20110193612 | METHODS OF CONTROLLING A SYNCHRONOUS RECTIFIER - Consistent with an example embodiment, there is a method of controlling a synchronous rectifier having an input signal having oscillations therein and a switch which is switchable between an open state and a closed state. The method comprises filtering the input signal to produce a filtered signal, comparing the filtered signal with a reference value, and opening the switch in response to the comparison, in which the filtering is active filtering. | 08-11-2011 |
20110261599 | CONTROLLER FOR A POWER CONVERSION CIRCUIT - A power conversion controller for controlling the operation of a switch in a power conversion circuit, wherein the power conversion controller is configured to operate the switch according to: a variable frequency mode of operation for switching frequencies greater than a minimum threshold value; and a fixed frequency mode of operation at a switching frequency equal to the minimum threshold value. | 10-27-2011 |
20110317459 | CONTROLLER FOR A POWER CONVERSION CIRCUIT - A power conversion controller for controlling the operation of a switch in a power conversion circuit. The switch having a “time-on” property and a “clamping frequency” property, in use. The power conversion controller comprises a detector configured to detect one or more operational parameter values of the power conversion circuit, and a clamping frequency adjuster configured to adjust the clamping frequency of the switch in accordance with the one or more detected parameter values in order to maintain the “time-on” property of the switch above a minimum threshold value. | 12-29-2011 |
20140218048 | NOISE SENSOR - The present invention relates to a noise sensor for an alternating or direct current power supply. The sensor comprises a noise sensing unit and a noise separator. The noise separator is configured to receive first, second and third input signals and provide a first output signal representative of the common mode noise and a second output signal representative of the differential mode noise. The noise sensing unit comprises a first capacitive element, a second capacitive element, a first resistive element and a second resistive element. | 08-07-2014 |
20150117066 | SWITCHED MODE CONVERTER AND METHODS OF CONTROLLING SWITCHED MODE CONVERTERS - A method is disclosed of controlling a switched mode converter comprising a switch and for providing power to device having a load, comprising: in response to the load exceeding a first threshold, operating in a first mode, being a CCM; in response to the load exceeding a second threshold and not exceeding the first threshold, operating in second mode, being a BCM without valley skipping wherein the switching frequency increases with decreasing load; in response to the load exceeding a third threshold and not exceeding the second threshold, operating in a third mode, being a BCM with valley skipping, wherein the switching frequency depends on the load and the number of valleys skipped and is between a fixed upper and a lower switching frequency limit; and in response to the load not exceeding the third threshold, operating in a fourth mode, being a BCM with valley skipping, wherein the switching frequency depends on at least the load, and is between an upper and a lower switching frequency limit wherein the upper switching frequency limit decreases with decreasing load. A switched mode converter controlled by such a method is also disclosed. | 04-30-2015 |