Roba
Giacomo Stefano Roba, Monza (mi) IT
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20090071195 | DEVICE AND METHOD FOR MANUFACTURING A PREFORM FOR OPTICAL FIBRES BY CHEMICAL VAPOUR DEPOSITION - A method and device for manufacturing a preform for optical fibres through chemical deposition on a substrate for deposition arranged vertically is described, comprising a chemical deposition chamber including at least one gripping member rotatably mounted about an axis Z-Z and adapted to hold at least one end of at least one elongated element constituting a substrate for chemical deposition for the formation of a preform for optical fibres. The chamber includes, moreover, at least one burner which is mobile along a direction Z substantially parallel to said axis Z-Z and adapted to deposit, on said at least one elongated element, a chemical substance for the formation of a preform and at least one suction element for collecting exhaust chemical substances, said at least one suction element being arranged on the opposite side to said at least one burner with respect to said axis Z-Z and being mobile along said direction Z. Said at least one suction element is advantageously positioned at a different height (preferably lower) with respect to that of said at least one burner to optimise the fluid dynamic conditions inside the chemical deposition chamber. | 03-19-2009 |
20090325111 | METHOD AND BURNER FOR MANUFACTURING A GLASS OPTICAL FIBRE PREFORM BY VAPOUR DEPOSITION - A method is disclosed for feeding a flow of gas to a burner for manufacturing an optical fibre preform, said burner comprising: a plurality of coaxial tubes, each two adjacent coaxial tubes defining an annular channel between themselves; an annular gas distribution chamber at one extremity of said annular channels and in fluid communication therewith, said annular distribution chamber being delimited in the radial direction by an inner and an outer surface; said method comprising introducing the flow of gas into the distribution chamber so that the direction of its radially outermost portion is tangential to the radially outer surface of the distribution chamber. The method allows obtaining a better gas velocity distribution in said annular channels. A burner for performing said method is also disclosed. | 12-31-2009 |
Giacomo Stefano Roba, Milano IT
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20090205374 | Method and Apparatus for the Production of Optical Fibers With Reduced Polarization Mode Dispersion - A method and apparatus for manufacturing an optical fiber includes the steps and/or means of: drawing a fiber from a heated preform by applying a pulling force to the fiber; spinning the fiber while it is drawn, wherein the step of spinning the fiber includes the sub-steps of winding the fiber on a spin roller by a winding arc, such that a friction force is generated between the fiber and the spin roller resulting from the winding arc and from the pulling force; axially displacing the spin roller such that the fiber is caused to roll over the spin roller surface by the friction force. | 08-20-2009 |
Giacomo Stefano Roba, Monza (milano) IT
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20090080851 | Radiation curable coating composition for optical fiber with reduced attenuation loss - The present invention relates to a radiation curable coating composition comprising a radiation curable oligomer comprising a backbone derived from polypropylene glycol and a dimer acid based polyester polyol, wherein said coating composition, when cured, is having: | 03-26-2009 |
20140163132 | RADIATION CURABLE COATING COMPOSITION FOR OPTICAL FIBER WITH REDUCED ATTENUATION LOSS - The present invention relates to a radiation curable coating composition comprising a radiation curable oligomer comprising a backbone derived from polypropylene glycol and a dimer acid based polyester polyol, wherein said coating composition, when cured, is having: | 06-12-2014 |
Marcos Andres Roba, Ciudad Autonoma De Bs.as AR
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20120256391 | Load transfer device for seed distribution systems in seeders and fertilizer machines - A load transfer device for seed and fertilizer distribution systems in seeders and fertilizers improving adaptation of seed distribution systems to the different ground irregularities, comprising | 10-11-2012 |
Marcos Andres Roba, Province Buenos Aires AR
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20140102738 | SURFACE TOPOGRAPHY OF AGRICULTURAL MACHINERY TOOLS THAT INTERACT WITH THE SOIL AND AGRICULTURAL TOOL WITH MODIFIED SURFACE TOPOGRAPHY - A substantial reduction in traction force demand can be achieved for agricultural tools with modified surface topography comprising dimples arranged in a parallelogram (hexagonal) pattern, the morphological unit of which is an equilateral triangle. | 04-17-2014 |
Marcos Andrés Roba, Pcia De Buenos Aires AR
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20150129256 | SCARIFIER FOR DEEP STRIP-TILLAGE - Scarifier for deep strip-tillage, that after a single trip allows the soil to be in adequate conditions for planting or sowing, operating with a great energy efficiency, contributing to an improvement in the production environment. The scarifier comprises a plurality of tillage units (a), spaced apart and located parallel to each other, and wherein each tillage unit (a) comprises a support structure ( | 05-14-2015 |
Stefano Giacomo Roba, Milan IT
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20100043953 | PROCESS AND APPARATUS FOR MANUFACTURING AN OPTICAL CABLE - An optical cable is manufactured in a single continuous process starting directly from at least an optical preform, by means of a fiber/cable integrated manufacturing line including a fiber(s) drawing assembly for the production of one or more optical fibers from respective optical preforms, and a cabling assembly for producing the optical cable from the optical fiber(s), the cabling assembly comprising a fiber buffering assembly for the application of a loose or tight coating to the optical fiber(s), and a strengthening and sheathing sub-assembly for applying one or more reinforcing and protective layers to the buffered optical fiber(s). | 02-25-2010 |
Thierry Roba, Houston, TX US
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20130197962 | MULTIPLE-LEVEL TREATMENT FOR OPTIMIZING ONE OR MORE FLUID SEPARATION UNITS - The invention relates to the optimized management of one or more fluid production units, especially those involving fluid separation treatment, comprising: a) a data collection step, the data being on one or more values of current parameters defining a current operating point of the production unit, on a future production demand and on at least one optimization criterion; and b) a computation step for computing one or more parameters defining a new operating point of the unit, at least in accordance with this demand. The computation step b) comprises at least: 1) an estimation of at least one optimum solution for defining the new operating point; and 2) a validity test carried out on this optimum solution, at least in accordance with an analysis of the transition of the production unit from the current operating point to the new operating point. | 08-01-2013 |
Thierry Roba, Boneffe BE
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20100211221 | Method For Controlling A Cryogenic Distillation Unit - A method for controlling a cryogenic distillation unit, for example an air separation unit or a unit for separating a mixture having hydrogen and carbon monoxide as its main components is presented. | 08-19-2010 |