Verhelst
Damien Verhelst, Liege BE
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20150104295 | Piezoelectric Damper System for an Axial Turbomachine Rotor - The present application relates to a rotor of a compressor or axial turbomachine comprising a vibration-damping system equipped with piezoelectric transducers distributed circularly and connected to dissipative resonant electric circuits. The circuits are closed and are equipped with a resistor and a coil. The piezoelectric transducers are divided into two sets of alternated transducers, each set being connected to a passive RLC circuit. In order to ensure a pooling of capacitances and currents thereof, the piezoelectric transducers are connected in parallel. During operation, the rotor is subjected to a turning excitation and is likely to vibrate and to deform in accordance with a modal shape with diameters with orthogonal deformation waves. The number of transducers is equal to the quadruple of the number of diameters of the mode, so as to be able to utilize the symmetrical character of this mode with diameters. The grouping of the piezoelectric transducers that deform in the same way makes it possible to damp the piezoelectric transducers with identical means thus pooled. | 04-16-2015 |
20150176421 | Final-Stage Internal Collar Gasket Of An Axial Turbine Engine Compressor - The invention relates to an axial turbine engine guide vane assembly that comprises an annular row of blades which extend radially, an internal collar disposed at the internal ends of the blades. The internal collar comprises a circular gasket in elastomer or in silicon which is disposed on one of the upstream or downstream sides of said collar, so as to ensure airtightness with a sealing surface of the intermediate casing of the turbine engine. The internal collar comprises a cavity in which the gasket is housed, the cavity being integrally formed in the material of the internal collar and/or with the help of one or a plurality of added members. The invention allows the airtightness in the event of vibrations to be improved, while at the same time increasing the rigidity of the internal collar without increasing the production cost. The invention likewise relates to an axial turbine engine. | 06-25-2015 |
Frédérique José Paul Christian Marie Ghislain Verhelst, Nieuw Vennep NL
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20100180952 | CONTROLLED FORMATION OF HYDRATES - The invention relates to a method for reducing or avoiding deposition of a hydrocarbon hydrate on a surface that is in contact with a hydrocarbon flow which contains water, the method comprising controlling the nucleation of dry hydrocarbon hydrate crystals in the flow. The invention further relates to a method for transporting a hydrocarbon flow which contains a hydrocarbon hydrate and to a method for preparing a dry hydrocarbon hydrate. | 07-22-2010 |
Frédérique José Paul Christian Marie Ghislain Verhelst, Nieuw Vennep NL
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20100180952 | CONTROLLED FORMATION OF HYDRATES - The invention relates to a method for reducing or avoiding deposition of a hydrocarbon hydrate on a surface that is in contact with a hydrocarbon flow which contains water, the method comprising controlling the nucleation of dry hydrocarbon hydrate crystals in the flow. The invention further relates to a method for transporting a hydrocarbon flow which contains a hydrocarbon hydrate and to a method for preparing a dry hydrocarbon hydrate. | 07-22-2010 |
Jan Verhelst, Menen BE
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20090242714 | RAIL AND CLAMP MOUNTING SYSTEM - A mounting system for attaching accessories to surfaces. The mounting system comprises a rail and clamp that includes housing for a bolt having a shaft extending outwardly of the housing from a first surface thereof. A hook extends outwardly of a second surface of the housing to engage the rail. A blade also extends outwardly of the second surface to be received in a channel of the rail. The hook and blade exert pressure on the rail during rotation of a knob along the shaft of the bolt to tighten the blade against the rail for releasable connection of the clamp to the rail, the clamp being adapted for attachment of accessories. | 10-01-2009 |
Kurt Thierry S. Verhelst, Oud-Turnhout BE
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20150251963 | INORGANIC NUTRITIVE IRON COMPOSITION - The present invention relates to an inorganic liquid nutritive composition comprising at least one aqueous phase, a polyphosphate and at least one source of iron as micronutrient, having a P | 09-10-2015 |
Marian Verhelst, Beaverton, OR US
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20120062331 | SYSTEM, METHOD AND APPARATUS FOR AN OPEN LOOP CALIBRATED PHASE WRAPPING PHASE MODULATOR FOR WIDEBAND RF OUTPHASING/POLAR TRANSMITTERS - A device article and method for an open loop calibrated phase wrapping phase modulator. A tapped delay line may provide a coarse resolution for one or more phases of a signal. A phase multiplexer may receive one or more coarse phases from the tapped delay line and select a coarse phase to send to the digitally controlled delay line. A digitally controlled delay line may provide a fine resolution to the coarse phase from the phase multiplexer. | 03-15-2012 |
Marian K. Verhelst, Beaverton, OR US
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20120099630 | PROGRAMMABLE ENGINE HAVING A RECONFIGURABLE ACCELERATOR DATA PATH FOR TESTING AND CALIBRATION OF ANALOG FRONT ENDS IN RADIO DEVICES - Briefly, in accordance with one or more embodiments, a radio device comprises an analog front end comprising a radio to transmit and/or receive radio-frequency signals, and a programmable engine coupled to the analog front end. The programmable engine is capable of being programmed to perform one or more tests on the analog front end and includes a reconfigurable data path reconfigurable by the programmable engine to perform one or more tests on the analog front end. | 04-26-2012 |
20120166812 | METHOD, APPARATUS AND SYSTEM FOR SECURE COMMUNICATION OF RADIO FRONT END TEST/CALIBRATION INSTRUCTIONS - Techniques for a programmable engine to provide security mechanisms protecting information which is in support of testing and/or calibration a radio front end. In an embodiment, test/calibration information is to be communicated to, from or within the programmable engine for processing by a particular resource of the programmable engine. In another embodiment, test/calibration is exchanged along a dedicated hardware data path between a security module of the programmable engine and an execution module of the programmable engine, wherein any data exchanged in the dedicated hardware data path is only accessible from the dedicated hardware data path via one or both of the security module and the execution module. | 06-28-2012 |
Marian K. Verhelst, Mechelin BE
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20130173203 | HARDWARE-EFFICIENT ON-CHIP CALIBRATION OF ANALOG/RF THROUGH SUB-SAMPLING - A digital on-die-test engine (OTE) is disclosed to generate stimuli signals for an analog/RF circuit, where the OTE is embedded within the circuitry. The stimuli signals are injected into the circuit, feed through the circuit, and are received back into the OTE for analysis. The OTE includes an input subsystem to receive signals from various locations throughout the circuit. The received signals are sub-sampled before being tested. The OTE includes memory-aware and memory-less algorithms for testing the signals. The OTE is capable of changing the configuration of the circuit, where needed, following the tests. | 07-04-2013 |
Marleen Verhelst, Hove BE
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20090196964 | DEVICE AND METHOD FOR HEATING MULTIPLE PREPARED MEALS - A device and method for heating multiple prepared meals simultaneously, consisting of a heating unit ( | 08-06-2009 |
Paulus W.e. Verhelst, Venlo NL
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20120188569 | METHOD OF CREATING A PRINTABLE RASTER IMAGE FILE - A method of creating a printable raster image file from a PDL file, including interpreting the PDL file, thereby to create a display list; and applying raster image processing to the display list, thereby to create the printable raster image file in four separation colours (C, M, Y, K), wherein the raster image processing is performed in a Graphics Processing Unit (GPU) having three colour channels (R, G, B) and an alpha channel (A) for transparency, and the three colour channels and the alpha channel are mapped onto the four separation colours (C, M, Y, K). | 07-26-2012 |
Steven H.l. Verhelst, Palo Alto, CA US
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20100003735 | Mild Chemically Cleavable Linker System - A linker system is provided where a small molecule reactive group, e.g., an activity based probe which binds to certain enzymes at the active site, is linked through an aryl diazo linker to an affinity molecule such as biotin. The reactive group may comprise a number of functionalities known to react with a specific target to be studied. This enables the probe to be exposed to analytes, such as proteins and bind specifically to them to form a complex having an affinity molecule allowing immobilization of the bound analyte on an affinity column or other support, e.g. with streptavidin. Then, the linker is cleaved without causing removal of the affinity group or dissociation of the probe from the analyte. The linker is cleaved under mild reducing conditions, e.g., dithionite. The probe is synthesized along with the linker on a solid support. | 01-07-2010 |
Veronique Verhelst, Godarville BE
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20120196953 | Antimicrobial Quaternary Ammonium Organosilane Compositions - Antimicrobial granules comprise carrier particles agglomerated by a binding agent containing a quaternary ammonium organosilane. | 08-02-2012 |