Roelof
Roelof Breken, Gorinchem NL
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20090000159 | TOOTH SYSTEM - A tooth system for use in an earthmoving device, includes a tooth and an adapter onto which the tooth is mounted in a detachable fashion, the tooth including a longitudinally extending tooth web, a longitudinally extending tooth base and a longitudinally extending tooth head at a distance from the tooth base, the tooth base and tooth head also extending transversely with respect to the web. The adapter includes an adapter base intended to be fixed onto an earthmoving device, such as onto the teeth bars of a draghead, and an adapter head, a longitudinally extending undercut cavity being defined between the adapter base and the adapter head, wherein the tooth base is slidably fitted within the undercut cavity and wherein the adapter head is slidably fitted between the tooth base and the tooth head for mounting or dismounting the tooth with respect; to the front end of the adapter. | 01-01-2009 |
Roelof Doornebosch, Deventer NL
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20130276776 | METHOD FOR PRODUCING AN ABSORBER FOR A SOLAR COLLECTOR, AND A SOLAR COLLECTOR - A method for producing a solar heat absorber for a solar collector, the solar heat absorber having a fluid inlet and a fluid outlet. The method includes the steps of providing a first and a second substantially flat metal plate, laser welding the plates together at least along a perimeter of the plates, providing at least a circumferential weld while pressing the plates together, placing the welded plates in a press that provides its pressure at the weld or welds and the press applying a pressure of at least 200 tons per m | 10-24-2013 |
Roelof Lettinga, Amsterdam NL
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20090177531 | SYSTEM AND METHOD FOR CATEGORY-BASED CONTEXTUAL ADVERTISEMENT GENERATION AND MANAGEMENT - A computer-implemented system and method for category-based contextual advertisement generation and management are disclosed. The system in an example embodiment includes an advertisement processor to allocate a first display region for displaying a combination of variable revenue ads and fixed price ads, the variable revenue ads and the fixed price ads being category-based, sort the variable revenue ads based in part on a user entered variable revenue value, and sort the fixed price ads based on a rotation. | 07-09-2009 |
20090177546 | SYSTEM AND METHOD FOR CATEGORY-BASED CONTEXTUAL ADVERTISEMENT GENERATION AND MANAGEMENT - A computer-implemented system and method for category-based contextual advertisement generation and management are disclosed. The system in an example embodiment includes an advertisement processor to allocate a first display region for displaying a combination of variable revenue ads and fixed price ads, the variable revenue ads and the fixed price ads being category-based, sort the variable revenue ads based in part on a user entered variable revenue value, and sort the fixed price ads based on a rotation. | 07-09-2009 |
Roelof Remijn, Ph'S-Gravendeel NL
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20110131714 | CONSUMABLE PRODUCT DISPENSING SYSTEM AND METHOD - A consumable material includes a specific concentration of a chemical additive. The consumable material is held in a dispensing system includes a sensor that detects the concentration of the chemical additive within the consumable material. A controller compares the detected concentration of the chemical additive and if the proper concentration is not detected, the system prevents the dispenser from releasing the consumable material. | 06-09-2011 |
Roelof Thiewes, Drenthe NL
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20160123584 | BURNER CONTROL SYSTEM - A burner control system for improving burner performance and efficiency. The system may determine fuel and air channel or manifold parameters. Determination of parameters may be performed with a sensor connected across the air and fuel channels. A signal from the sensor may control the parameters which in turn affect the amounts of fuel and air to the burner via a controller. Parameter control of the fuel and air in their respective channels may result in more accurate fuel and air ratio control. One or more flow restrictors in fuel and/or air bypass channels may further improve accuracy of the fuel and air ratio. The channels may be interconnected with a pressure or flow divider. Byproducts of combustion in the exhaust, temperatures of gas and air, flame quality and/or other items may be monitored and adjusted with control of the fuel and air ratio for optimum combustion in the burner. | 05-05-2016 |
Roelof Thiewes, Odoorn NL
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20100297568 | DEVICE FOR PROVIDING A GAS/COMBUSTION AIR MIXTURE FOR A GAS BURNER - The invention relates to a device for providing a gas/combustion air mixture for a gas burner, comprising a fan ( | 11-25-2010 |
20140080075 | BURNER CONTROL SYSTEM - A burner control system for improving burner performance and efficiency. The system may determine fuel and air channel or manifold parameters. Determination of parameters may be performed with a sensor connected across the air and fuel channels. A signal from the sensor may control the parameters which in turn affect the amounts of fuel and air to the burner via a controller. Parameter control of the fuel and air in their respective channels may result in more accurate fuel and air ratio control. One or more flow restrictors in fuel and/or air bypass channels may further improve accuracy of the fuel and air ratio. The channels may be interconnected with a pressure or flow divider. Byproducts of combustion in the exhaust, temperatures of gas and air, flame quality and/or other items may be monitored and adjusted with control of the fuel and air ratio for optimum combustion in the burner. | 03-20-2014 |
20160076767 | SYSTEM AND APPROACH FOR CONTROLLING A COMBUSTION CHAMBER - A system for controlling activity in a combustion chamber. The system does not necessarily need to be mechanically adjusted and yet may provide precise control of a fuel air mixture ratio. A sensing module of the system may have a mass flow sensor that relates to air flow and another sensor that relates to fuel flow. Neither sensor may need contact with fuel. Fuel and air to the system may be controlled. Pressure of the fuel and/or air may be regulated. The sensors may provide signals to a processor to indicate a state of the fuel and air in the system. The processor, with reliance on a programmed curve, table or the like, often based on data, in a storage memory, may regulate the flow or pressure of the fuel and air in a parallel fashion to provide an appropriate fuel-air mixture to the combustion chamber. | 03-17-2016 |
Roelof Van De Belt, Best NL
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20100188196 | CURABLE LIQUID COMPOSITION CURED FILM AND ANTISTATIC LAMINATE - The present invention relates to A curable liquid composition comprising 0.5-20 wt % of conductive particles, 0.4-10 wt % of a curable compound having at least two polymerizable groups, 15-50 wt % of water, 5-50 wt % of a solvent D and 30-80 wt % of a solvent E, wherein solvent D is an alcohol or a keton and solvent E is an organic compound comprising one hydroxy group and one ether group, wherein the organic compound comprises between 3 and 8 carbon atoms, which forms an azeotrope with water. | 07-29-2010 |
20100311859 | DISPERSION OF NANOPARTICLES IN ORGANIC SOLVENTS - The invention relates to a dispersion of antimony or indium doped tinoxide nanoparticles in an organic solvent, comprising a) 5-75 wt % of nanoparticles having a mean average size between 1 and 100 nm. b) a solvent comprising a hydroxyl group and an ether group. c) a water content of less then 15 wt %. d) a dispersant content of less then 0.1 wt %. The invention also relates to a method of making such a dispersion, by I. Making a mixture of an aqueous dispersion of antimony or indium doped tinoxide particles having an average size between 1 and 100 nm, a solvent comprising a hydroxyl group and an ether group, which forms an azeotrope with water, and a grafting compound. II. Heating the mixture under stirring at a temperature between 20 and 150° C. III. At least partially removing the solvent/water mixture. IV. Optionally adding more solvent. V. Repeating steps III and IV till the water content of the obtained dispersion is less then a desired value and the concentration solid is between 5 and 70 wt %. | 12-09-2010 |
Roelof Van Den Hoff, Rockingham AU
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20120017884 | PORTABLE CAMPFIRE - A campfire ( | 01-26-2012 |
Roelof Van Ginkel, Amsterdam NL
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20090012333 | Process of Preparing Glycolaldehyde - The invention provides a process of preparing glycolaldehyde by reacting formaldehyde with hydrogen and carbon monoxide in the presence of a catalyst composition which is based on, a) a source of rhodium, and b) a ligand of general formula R | 01-08-2009 |
Roelof Wijnaendts Van Resandt, Odenheim DE
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20110273688 | METHOD AND DEVICE FOR IMAGING A RADIATION-SENSITIVE SUBSTRATE - A method and apparatus for imaging a radiation-sensitive substrate, wherein a programmable template is projected onto the radiation-sensitive substrate using coherent radiation having a wavelength at which the substrate is radiation sensitive. An overall image of the programmable template having an image grid is displaced simultaneously by an acoustic-optical or electro-optical deflection unit such that multiple projections impinge on the substrate at different positions such that a fine partial grid is created in the image grid on the substrate. | 11-10-2011 |