Patent application number | Description | Published |
20080272098 | METHOD FOR ELECTRIC ARC JOINING - To refine a method for electric arc joining, in particular for M[etal] P[rotective] G[as] welding and/or for M[etal] P[rotective] G[as] soldering, of at least one object made of metal and/or at least one metal alloy under protective gas using at least one meltable electrode, at least one mixture made of argon, helium, and at least one active gas being supplied as the protective gas, in such a manner that arbitrary electric arc joining technologies, in particular M[etal] P[rotective] G[as] welding and/or M[etal] P[rotective] G[as] soldering, may be performed in parallel and/or in sequence using the supplied protective gas, it is suggested that the protective gas have
| 11-06-2008 |
20090014422 | Device and Method for Welding Workpieces - According to the invention a welding device for welding workpieces is provided. The welding device comprises a welding means for making a welding seam on workpieces and a cleaning nozzle in order to emit a cryogenic medium onto the surfaces of the workpieces in the area of their welding seam to be formed. The distance between the welding means and the nozzles is at least 5 cm. | 01-15-2009 |
20090236319 | METHOD FOR JOINING OBJECTS - A method for joining at least two objects by a joining means selected from resistance welding, resistance soldering and a magnetically impelled arc, in which the objects are brought into contact with one another in the area to be joined, such that the objects are joined to one another in a particularly stable and/or particularly homogenous fashion and oxidation of the area to be joined is reliably prevented. The respective base metal of the objects is fused at least in the contact area, and in that at least one inert gas and/or at least an inert gas mixture is supplied at least to the contact area of the objects such that the fusing of the respective base metal takes place under an inert gas atmosphere. | 09-24-2009 |
20100108646 | Method For Arc Welding With Consumable Electrode - Methods for arc welding unalloyed or low-alloy steels with consumable electrode under protective gas are suggested, in which the protective gas is a mixture comprising at least helium and an active gas as well as a further inert gas. In the general case, the proportion of the active gas in the total volume of the protective gas is to be in the range from more than 0.5% to approximately 1,5% and the proportion of helium in the total volume of the protective gas is to be more than 30%. In case an electrode having a lowered or medium Si content of approximately 0.2% to approximately 0.4% is used, the proportion of the active gas in the total volume of the protective gas is to be approximately 1% to approximately 5%. If an electrode with a low Si content of approximately 0.05% to approximately 0.1% is used, the proportion of the active gas in the total volume of the protective gas is to be approximately 3% to approximately 10%. | 05-06-2010 |
Patent application number | Description | Published |
20080239476 | Illuminating module and surgical microscope incorporating said illuminating module - An illuminating module ( | 10-02-2008 |
20090059359 | SECONDARY LIGHT SOURCE - A secondary light source is provided comprising a narrowband light source ( | 03-05-2009 |
20100188740 | Stereo Microscope System - An illumination system of a microscopy system comprises an actuator configured to change an angle of an illumination light beam and a mirror assembly, which is selectively positionable into the beam path of the illumination light beam. The mirror assembly may comprise an actuator configured to change an orientation of a mirror with respect to another mirror. | 07-29-2010 |
20120019777 | System and Method for Visualizing Objects - A method of visualizing objects using an optical system including an OCT system configured to obtain OCT data from voxels within a first volume having a first lateral extent includes obtaining position data indicative of a position of a predetermined portion of a movable instrument relative to the optical system and determining a first set of voxels from the voxels of the first volume based on the determined position such that at least 80% of the first set of voxels is located within a second volume having a second lateral extent with a size at least half the size of the first lateral extent. The method also includes obtaining OCT data of the first set of voxels, visualizing a representation of the OCT data of the first set of voxels, and repeating the steps of the method at a first repetition rate higher than 5 times per second. | 01-26-2012 |
20130083289 | Module for Transmitting a Light Beam and Surgical Microscope with Deflecting Element and Fundus Imaging System - The invention is directed to a module for transmitting a light beam ( | 04-04-2013 |
20140024949 | SURGICAL MICROSCOPY SYSTEM INCLUDING AN OCT SYSTEM - Receiver adapted for determining an estimation of interferences when receiving an OFDM signal made of packets, each packet comprising a first training field, a second training field, at least two header fields and data field, comprising:
| 01-23-2014 |
20140320805 | METHOD, OPHTHALMIC MEASURING SYSTEM AND COMPUTER-READABLE STORAGE MEDIUM FOR SELECTING AN INTRAOCULAR LENS - A method of determining at least one selection parameter for selecting an intraocular lens to be inserted into an eye; the method comprises reading, by a data processing system, data indicative of an axial position of at least a portion of an anterior surface of an at least partially empty capsular bag of the eye, relative to an optical axis of the eye. The method further comprises determining an axial position parameter, which is representative of the axial position of the portion of the anterior surface, depending on the data. The method further comprises determining the at least one selection parameter for selecting the intraocular lens depending on the determined position parameter. | 10-30-2014 |
20140362343 | MICROSCOPY SYSTEM FOR OBSERVING FLUORESCENCE IN OPHTHALMOLOGY - An ophthalmology microscopy system for observing fluorescence comprises an imaging system and an illumination system. The imaging system provides at least one optical imaging path producing a magnified multi-dimensional image of an object disposable in a focal plane of the imaging system, and comprises at least one optical observation filter. The illumination system provides an illumination beam path intersecting the focal plane of the imaging system at a variable angle of less than 90°. The microscopy system comprises first and second operating states. In the first operating state, radiation passing through the illumination beam path has at least in a section along the illumination beam path a spectrum free of a pass band of the observation filter. In the second operating state, radiation passing through the illumination beam path has a spectrum having a bandwidth of at least 200 nm in a range from 380 nm to 780 nm. | 12-11-2014 |
Patent application number | Description | Published |
20100127462 | PISTON RING WITH A MULTILAYER ASSEMBLY, AND A METHOD FOR THE PRODUCTION THEREOF - The present invention relates to a piston ring with improved running-in and wear behaviour as well as to a method for the production thereof. According to a first embodiment, the piston ring comprises a ring body ( | 05-27-2010 |
20110081540 | WEAR-RESISTANT COMPONENT - The present invention pertains to wear-resistant components for internal combustion engines, particularly piston rings, that feature a wear protection layer with iron base alloy on their surface that is subjected to wear and are characterized in that the components are manufactured of a coating powder by means of high-velocity flame spraying (HVOF) and the coating is single-phase, wherein the proportions of the elements Fe, Cr, B and C in the wear protection layer are 45-75 wt.-% Fe, 15-40 wt.-% Cr, 1-10 wt.-% B and 0.1-5 wt.-% C. The present invention furthermore pertains to a method for manufacturing wear-resistant components for internal combustion engines, particularly piston rings, according to the present invention. | 04-07-2011 |
20110101621 | WEAR-RESISTANT COMPONENT - The present invention pertains to wear-resistant components for internal combustion engines, particularly piston rings, especiallly piston rings that feature a wear protection layer with iron base alloy on their surface that is subjected to wear and are characterized in that they are manufactured of a coating powder by means of high-velocity flame spraying (HVOF), wherein the coating is single-phase and comprises the elements Fe, Cr, V and C, and wherein VC forms mixed crystals and also leads to a dispersion strengthening. The present invention furthermore pertains to a method for manufacturing wear-resistant components for internal combustion engines, particularly piston rings, according to the present invention. | 05-05-2011 |
20110109048 | METHOD AND DEVICE FOR PRODUCING A DISPERSION-HARDENED OBJECT THAT CONTAINS CARBIDE NANOPARTICLES - A method for producing a dispersion-hardened object which contains carbide nanoparticles comprises producing an object by means of a thermal spraying method, wherein downstream of the combustion chamber, the gas flow is supplied by means of a carrier gas with at least one precursor which reacts in the gas flow to form a carbide, or carbide nanoparticles are supplied via an external nanoparticle generator which is subject to a thermal load. It allows the production of a dispersion-hardened object such as, for example, a component for an internal combustion engine, for example a piston ring. The method is carried out by means of a thermal spraying device which, downstream of the combustion chamber, besides at least one line for supplying a thermal spray powder, further comprises at least one line for supplying a precursor by means of a carrier gas. | 05-12-2011 |
20110186003 | METHOD FOR PRODUCING A PISTON FOR AN INTERNAL COMBUSTION ENGINE AND PISTON FOR AN INTERNAL COMBUSTION ENGINE - In a method for producing a piston for an internal combustion engine, at least the region of the upper annular groove is at least partially recessed, an adhesion promoter layer containing aluminium is then applied, a wear-resistant layer is thermally sprayed onto said adhesion promoter layer and at least the upper annular groove is at least partially formed in said layers. The invention also relates to a piston for an internal combustion engine that comprises a base material, an adhesion promoter layer that contains aluminium and is applied to at least some regions of said material and a wear-resistant layer that is thermally sprayed onto said adhesion promoter layer. At least the upper annular groove is at lest partially formed in said layers. | 08-04-2011 |
20120067203 | SLIDING ELEMENT WITH EXPOSED FUNCTIONAL SURFACE - The invention relates to a sliding element, which comprises a support and a coating applied by means of thermal spraying on the support, wherein the coating comprises at least two phases and at least one of the at least two phases is recessed in respect of the other phase of phases. | 03-22-2012 |
20120103298 | METHOD AND DEVICE FOR PRODUCING A PISTON FRO AN INTERNAL COMBUSTION ENGINE AND PISTON FOR INTERNAL COMBUSTION ENGINE - The invention relates to a method for producing a piston for an internal combustion engine, wherein a section which in the finished piston has a cooling duct (14) and a piston ring groove is recessed at first, the later cooling duct is then covered, and finally material for accommodating the piston ring is applied, and which is characterized in that the later cooling duct is covered by a wire material which is provided in a length, greater than necessary for one single piston. A device for producing a piston for an internal combustion engine with an at first recessed section that in the finished piston has a cooling duct (14) and a piston ring groove, has a device for attaching a cover on the cooling duct and a device for providing wire material having a length greater than necessary for one single piston. A piston for an internal combustion engine has a cooling duct (14) and a reinforcement material for accommodating a piston ring as well as a cover material between the cooling duct (14) and the reinforcement material, wherein the cover material is made of wire material continuously unwinding from a roll. | 05-03-2012 |
20120126487 | SLIDING MEMBER HAVING A THERMALLY SPRAYED COATING AND METHOD FOR PRODUCING SAME - A sliding member for an internal combustion engine includes: a substrate and a coating obtainable by thermally spraying a powder, having the element proportions of 55 to 75 wt % of chromium, Cr; 3 to 10 wt % of silicon, Si; 18 to 35 wt % of nickel, Ni; 0.1 to 2 wt % of molybdenum, Mo; 0.1 to 3 wt % of carbon, C; 0.5 to 2 wt % of boron, B; and 0 to 3 wt % of iron, Fe. | 05-24-2012 |
20120306158 | SLIDING ELEMENT HAVING ADJUSTABLE PROPERTIES - A sliding element, particularly a piston ring for an internal combustion engine, includes a substrate, and a wear-protection layer, obtained by thermal spraying of a powder comprising the element proportions
| 12-06-2012 |
20130181409 | PISTON RING HAVING A THERMALLY SPRAYED COATING AND METHOD FOR PRODUCING SAME - A method for producing a piston ring for an internal combustion engine includes providing, a substrate and applying a coating by means of thermal spraying of a powder including solid lubricants on the substrate, having the elemental proportions of 15-30% by weight of iron, Fe; 15-30% by weight tungsten, W; 25-35% by weight of chromium, Cr; 10-35% by weight of nickel, Ni; 1-5% by weight of molybdenum, Mo; 0.2-3% by weight of aluminum, Al; 3-20% by weight of copper, Cu; 1-10% by weight of carbon, C; 0.1-2% by weight of sulfur, S; and 0.1-2% by weight of silicon, Si. The resultant piston ring and coating are also provided. | 07-18-2013 |