Patent application number | Description | Published |
20100192921 | FUEL PUMP, IN PARTICULAR FOR A FUEL SYSTEM OF A PISTON ENGINE - A fuel pump according to the invention includes a housing and a part, which is a moving part during operation and which bears on a housing region at least indirectly. It is proposed that the fuel pump includes a coating which is applied to the housing region on a side of the housing region which faces towards the moving part, and that the coating is composed of a plastic. | 08-05-2010 |
20110175440 | PRESSURE CONTROL VALVE ARRANGEMENT HAVING DIAPHRAGM VALVES FOR CONTROLLING A FLUID PRESSURE IN AN ABS BRAKE SYSTEM OF A VEHICALE, HAVING DIAPHRAGMS ARRANGED IN PARALLEL PLANES OR COPLANAR FASHION - A pressure control valve arrangement is described for controlling the fluid pressure in an ABS brake system of a vehicle in such a manner that, in the event of a tendency of individual wheels of the vehicle to lock, the brake pressure in associated brake cylinders can be adaptively adjusted, at least two diaphragm valves which have diaphragms loaded by spring elements, as well as at least one electromagnetic control valve which can be activated by an electronic control device for the pilot control of the diaphragm valves. Also described is a method for producing the pressure control valve arrangement. | 07-21-2011 |
20120175942 | PRESSURE CONTROL VALVE ARRANGEMENT HAVING A PRESSURE MEDIUM CHANNEL OF OVAL CROSS-SECTION - A pressure control valve arrangement is described for controlling a fluid pressure in an ABS brake system of a vehicle such that, in the event of a tendency of individual wheels of the vehicle to lock, the brake pressure in at least one associated brake cylinder can be adaptively adjusted, including: a housing in which is formed at least one pressure-medium-conducting pressure medium duct and in which is provided a diversion of the flow of the pressure medium within the pressure medium duct from a portion of the pressure medium duct leading in one direction into a portion of the pressure medium duct leading in another direction, in which the pressure medium duct is produced together with the housing by primary forming, and in which the cross section of the pressure medium duct is oval and the major dimension of the oval cross section and the central axis of the pressure medium duct are arranged in a common plane, and the minor dimension of the oval cross section is perpendicular to the plane. | 07-12-2012 |
20120175943 | PRESSURE CONTROL VALVE ARRANGEMENT HAVING AN ECCENTRICALLY MOUNTED DOUBLE MAGNET - A pressure control valve arrangement is described for controlling the fluid pressure in an ABS brake system of a vehicle so that, during a tendency of individual wheels of the vehicle to lock, the brake pressure in at least one assigned brake cylinder can be matched adaptively, a) two diaphragm valves and two electromagnetic control valves, activatable by an electronic control device, for the pilot control of the diaphragm valves being provided in the housing of the pressure control valve arrangement, b) the two electro-magnetic control valves having a double magnet with two magnet coils and also magnet armatures cooperating with solenoid valve seats and actuable by current being applied to the magnet coils, c) the housing having at least one pressure medium connection, connected to a service brake valve, for acting with pressure upon and/or relieving the pressure of the pressure control valve arrangement and also at least one working connection for connecting to the brake cylinder, characterized in that d) a plane of symmetry of the mid-axes of the magnet coils of the double magnet of the electromagnetic control valves is arranged parallel, and offset by the amount of an eccentricity, with respect to a mid-axis of the pressure medium connection. | 07-12-2012 |
20120175944 | PRESSURE CONTROL VALVE ARRANGEMENT HAVING COVERS THAT ARE PRODUCED AS A COMPLETELY INTEGRAL PART WITH TRANSVERSE CHANNELS BY PRIMARY SHAPING - A pressure control valve arrangement is described for controlling the fluid pressure in an ABS brake system of a vehicle in such a way that, while there is a tendency of individual wheels of the vehicle to lock, the brake pressure in at least one associated brake cylinder can be adaptively adjusted, wherein at least one diaphragm valve is accommodated in a housing of the pressure control valve arrangement, said diaphragm valve having a diaphragm as the valve body, which diaphragm can be acted upon by introducing a pressure medium into a control chamber that is covered on the outside of the housing by a respective cover produced by primary shaping, such as injection molding, in such a way that the control chamber is formed between the diaphragm and the cover, and wherein blind holes, which extend in the cover substantially perpendicularly to the plane of the cover, are formed in the cover, the blind hole opening of at least one of said blind holes leading into the control chamber, and the blind hole opening of at least one other of said blind holes leading into a pressure medium channel formed in the housing, and at least one and the other of said blind holes being fluidically interconnected by at least one transverse channel, characterized in that the transverse channel has an acute angle relative to the plane of the cover and opens at one end, by a transverse channel opening, into the control chamber or into the pressure medium channel, wherein the transverse channel opening at least partially overlaps the blind hole opening of one of the blind holes connected by the transverse channel. | 07-12-2012 |
20120181852 | PRESSURE CONTROL VALVE ARRANGEMENT HAVING PRESSURE MEDIUM GUIDING SURFACE INTEGRALLY FORMED ONTO A PROJECTION OF THE COVER - A pressure control valve arrangement for controlling a fluid pressure in an ABS brake system of a vehicle so that, while there is a tendency of individual wheels of the vehicle to lock, the brake pressure in at least one associated brake cylinder can be adaptively adjusted, including: a housing; and at least one diaphragm valve is accommodated in the housing, the diaphragm valve having a diaphragm as the valve body, which diaphragm can be acted upon by introducing pressure medium into a control chamber that is covered on the outside of the housing by a cover so that the control chamber is formed between the diaphragm and the cover, wherein at least one pressure medium channel carrying pressure medium is formed in the housing in the region of the cover, wherein at least one cover has at least one projection projecting into the pressure medium channel in the housing, a pressure medium guiding surface for directing the flow of the pressure medium carried in the pressure medium channel being formed on the projection. | 07-19-2012 |
Patent application number | Description | Published |
20080258346 | COMPOSITE POWDER, USE IN A SHAPING PROCESS, AND MOULDINGS PRODUCED FROM THIS POWDER - The present invention relates to a composite powder of polymer powder and porous glass beads, and to the use of this composite powder for shaping processes, and also to mouldings produced from this composite powder. | 10-23-2008 |
20080300353 | LASER SINTER POWDER WITH METAL SOAPS, PROCESS FOR ITS PRODUCTION, AND MOLDINGS PRODUCED FROM THIS LASER SINTER POWDER - A sinter powder containing a polyamide and metal soaps, in particular particles of a salt of an alkanemonocarboxylic acid. A process for laser sintering, and to moldings produced from the sinter powder. The moldings formed using the powder have advantages in appearance and in surface finish when recyclability in the selective laser sintering (SLS) process is taken into account. Moldings produced from recycled sinter powder have improved mechanical properties, in particular in the modulus of elasticity and tensile strain at break. | 12-04-2008 |
20090088508 | POWDERY COMPOSITION OF A POLYMER AND A FLAMEPROOFING AGENT CONTAINING AMMONIUM POLYPHOSPHATE, METHOD FOR THE PRODUCTION THEREOF, AND MOULDED BODY PRODUCED FROM SAID POWDER - The present invention relates to a powder which, in addition to a polymer, comprises a flame retardant based on ammonium polyphosphate, to the use of this powder for the layer-by-layer production of moldings, and also to moldings produced from this powder. The moldings constructed using the inventive powder have marked advantages with regard to their flammability, when comparison is made with conventional products, and this permits use in aircraft, for example. | 04-02-2009 |
20090236775 | COPOLYAMIDE POWDER AND ITS PREPARATION, USE OF COPOLYAMIDE POWDER IN A SHAPING PROCESS AND MOULDINGS PRODUCED FROM THIS COPOLYAMIDE POWDER - A task often encountered in very recent times is the rapid provision of prototypes. Particularly suitable processes are those based on pulverulent materials and in which the desired structures are produced layer-by-layer through selective melting and solidification. The invention provides the constitution, production and use of a copolyamide powder which was produced using the following monomer units: a) laurolactam or ω-aminoundecanoic acid, and also b) dodecanedioic acid, and either c) decanediamine or dodecanediamine, in shaping processes, and also to mouldings produced through a layer-by-layer process which selectively melts regions of a powder layer, using this specific powder. Once the regions previously melted layer-by-layer have been cooled and solidified, the moulding can be removed from the powder bed. The mouldless layer-by-layer processes for the production of components using the copolyamide powder result in simplified and more reliable conduct of the process and better recyclability. | 09-24-2009 |
20100324190 | POWDERY COMPOSITION OF A POLYMER AND A FLAMEPROOFING AGENT CONTAINING AMMONIUM POLYPHOSPHATE, METHOD FOR THE PRODUCTION THEREOF, AND MOULDED BODY PRODUCED FROM SAID POWDER - A pulverulent composition that is a powder containing at least one polymer, and at least one flame retardant that contains ammonium polyphosphate, the powder having a maximum particle size of ≦150 μm and a median particle size of from 20 to 100 μm. | 12-23-2010 |
20110118410 | COMPOSITE POWDER, USE IN A SHAPING PROCESS, AND MOULDINGS PRODUCED FROM THIS POWDER - The present invention relates to a composite powder which comprises polymer powder and porous glass beads, and to the use of this composite powder for shaping processes, and also to mouldings produced from this composite powder. | 05-19-2011 |
20110130515 | POLYMER POWDER COMPRISING A COPOLYMER, USE IN A SHAPING METHOD WHICH USES A NON-FOCUSED APPLICATION OF ENERGY AND MOULDED BODY THAT IS PRODUCED FROM SAID POLYMER POWDER - A molding produced by a layer-by layer process of selectively melting regions of a respective pulverulent layer via unfocused introduction of electromagnetic energy, using a polymer powder, where the powder has at least one thermoplastic random copolymer with an ISO 1133 MFR value of from 12 to 1 g/10 min. | 06-02-2011 |
20110252618 | APPARATUS FOR REDUCING THE SIZE OF THE LOWER CONSTRUCTION CHAMBER OF A LASER SINTERING INSTALLATION - An apparatus for the reduction in size of the lower construction chamber of a laser sintering installation is provided. Also provided is a method to reduce the size of the lower construction chamber of a laser sintering installation by insertion of the apparatus of the invention. The invention thereby provides for reduction in the demand for material for specific laser sintering requirements. In addition, a new degree of sintering process control is obtained when the apparatus contains heating or cooling units. | 10-20-2011 |
20120041132 | POLYMER POWDER COMPRISING POLYAMIDE USE THEREOF IN A MOULDING METHOD AND MOULDED BODY MADE FROM SAID POLYMER POWDER - A molding, produced by a layer-by-layer process in which regions of respective polymer pulverulent layers are selectively melted via introduction of electromagnetic energy, where the process employs a powder which comprises at least one homopolyamide prepared via polycondensation of diamines and dicarboxylic acids, wherein the homopolyamide has an enthalpy of fusion of at least 125 J/g and a recrystallization temperature of at least 148° C. | 02-16-2012 |
20120202012 | PROCESS FOR THE PRODUCTION OF A THREE DIMENSIONAL SYSTEM - A process for the layer-by-layer production of three-dimensional objects, through selective melting and solidification of pulverulent substrates is provided. According to the process the construction chamber is inertized with an inertizing gas which is of higher density than air. An apparatus for conducting the process is also provided. | 08-09-2012 |
20120315483 | POLYAMIDE-BASED POLYMER POWDER, USE THEREOF IN A MOLDING METHOD, AND MOLDED ARTICLES MADE FROM SAID POLYMER POWDER - The invention relates to a polymer powder for use in a layer-by-layer method in which areas of each powder layer are selectively fused by introducing electromagnetic energy. Said polymer powder contains: at least one AB-type polyamide produced by polymerizing lactams comprising 10 to 12 carbon atoms in the monomer unit or polycondensing the corresponding ω-amino carboxylic acids comprising 10 to 12 carbon atoms in the monomer unit and at least one AABB-type polyamide produced by polycondensing diamines and dicarboxylic acids, each of which comprises 10 to 14 carbon atoms in the monomer units, the AB-type polyamide containing up to 20 mole % of the AABB comonomer units and the AABB-type polyamide containing up to 20 mole % of the AB monomer units. The invention also relates to a method for producing such a powder, a layer-by-layer method for producing a molded article from such a powder in which areas of each layer are selectively fused by introducing electromagnetic energy, the selectivity being obtained using masks or by applying inhibitors, absorbers or susceptors or focusing the applied energy, and molded articles produced in said manner. | 12-13-2012 |
20130011660 | POWDER COMPRISING POLYMER-COATED CORE PARTICLES COMPRISING METALS, METAL OXIDES, METAL NITRIDES OR SEMIMETAL NITRIDES - Composite particles comprising core particles completely or partially coated with a precipitated polymer, where the d | 01-10-2013 |
20130101803 | APPARATUS FOR AVOIDING DEPOSITS ON OPTICAL COMPONENTS IN THE LASER SINTERING PROCESS - The present invention provides a process and an apparatus for the layer-by-layer production of three-dimensional objects, wherein material vapours formed during processing in the construction chamber are prevented from deposition on apparatus components by exposing the gases to deposition surfaces where the materials condense and deposit. | 04-25-2013 |
20130171416 | POWDER COMPRISING POLYMER-COATED INORGANIC PARTICLES - Composite particles comprising core particles completely or partially coated with a precipitated polymer, where the d | 07-04-2013 |
20130177766 | APPARATUS FOR LAYER-BY-LAYER PRODUCTION OF THREE-DIMENSIONAL OBJECTS BY ROTATING APPLICATION - The present invention relates to an apparatus for the layer-by-layer production of three-dimensional objects, to processes for layer-by-layer production, and also to corresponding shaped articles. | 07-11-2013 |
20130177767 | APPARATUS FOR LAYER-BY-LAYER PRODUCTION OF THREE-DIMENSIONAL OBJECTS - An apparatus for the layer-by-layer production of three-dimensional objects having a material application unit containing a doctor blade with an edge closest to the construction field having a non-continuous straight line. In one embodiment the blade may vibrate. A process for layer-by-layer production, wherein the construction field is completely coated with applied powder prior to irradiation is also provided. Three dimensional articles made according to the invention are also provided. | 07-11-2013 |
20130183493 | COMPONENT PROPERTIES THROUGH BEAM SHAPING IN THE LASER SINTERING PROCESS - An apparatus and method for the layer-by-layer production of three-dimensional objects wherein a powder layer is melted with a laser beam shaped such that the focus maximum power density is less than 50% greater than the average power density, is provided. Also provided are the corresponding mouldings. | 07-18-2013 |
20130183494 | COMPONENT PROPERTIES THROUGH OPTIMIZED PROCESS MANAGEMENT IN LASER SINTERING - A method for layer-by-layer production of a three dimensional object is provided. The method includes applying a layer of a polymer powder having a thickness; selectively irradiating portions of the polymer powder layer with a laser beam having an average power density and a focus maximum power density to melt and sinter the irradiated polymer powder; cooling the melted and sintered powder to obtain a solid mass having a shape; and repeating the application, irradiating and cooling operations until the three dimensional object is obtained; wherein a duty factor of the laser beam is greater than 60%. Also provided is an apparatus to carry out the method and a molding obtained therefrom. | 07-18-2013 |
20130183529 | POWDER COMPRISING POLYMER-COATED POLYMERIC CORE PARTICLES - The invention relates to powder, comprising composite particles comprising core particles completely or partially coated with a precipitated first polymer, where the core particles comprise a second polymer which differs from the precipitated first polymer, and where the ratio of the d | 07-18-2013 |
20130216836 | PROCESS FOR MELTING/SINTERING POWDER PARTICLES FOR THE LAYER-BY-LAYER PRODUCTION OF THREE-DIMENSIONAL OBJECTS - A process for melting/sintering powder particles for layer-by-layer production of three-dimensional objects wherein a layer of powder particles is irradiated by a nonlinear path of an electromagnetic radiation is provided. Also provided are an apparatus to conduct the process and three dimensional objects obtained by the process. | 08-22-2013 |
20130274435 | POLYMER POWDER WITH MODIFIED MELTING BEHAVIOUR - The present invention provides precipitated polymer powders based on a polyamide of the AABB type, obtained by the reprecipitation of the polyamides by at least partial dissolution followed by continuous cooling of the solution to below the precipitation temperature. The polyamides are prepared by polycondensation of diamines with dicarboxylic acids. The precipitated polyamides obtained are used in layer-by-layer shaping processes such as selective laser sintering. | 10-17-2013 |
20130316145 | PROCESS FOR LAYER-BY-LAYER PRODUCTION OF THREE-DIMENTIONAL OBJECTS - The present invention provides processes for the layer-by-layer production of three-dimensional objects using a powder material comprising polyamide PA613 and also to the moldings obtained according to the process. | 11-28-2013 |
20140079916 | PROCESS FOR THE LAYER-BY-LAYER PRODUCTION OF LOW-WARPAGE THREE-DIMENSIONAL OBJECTS BY MEANS OF COOLING ELEMENTS - An apparatus for the simultaneous layer-by-layer production of three-dimensional objects, containing a construction chamber with a height-adjustable construction platform, an apparatus for applying, to the construction platform, a layer of a material that can be hardened by exposure to electromagnetic radiation, and irradiation equipment. The irradiation equipment contains a radiation source emitting electromagnetic radiation, a control unit and a lens located in a beam path of the electromagnetic radiation, for irradiating sites within the layer that correspond to an object, in which a cooling element can be produced at the same time as the object. A process for the layer-by-layer production of a three-dimensional object in the apparatus, involves producing an object and a cooling element at the same time. | 03-20-2014 |
20140371364 | POLYMER POWDER WITH POLYAMIDE, USE IN A SHAPING PROCESS, AND MOLDINGS PRODUCED FROM THIS POLYMER POWDER - The present invention relates to a polymer powder which comprises nylon-11, and to the use of this powder for shaping processes, and also to moldings produced from this polymer powder. | 12-18-2014 |
20150251247 | METHOD AND DEVICE FOR PRODUCING THREE-DIMENSIONAL OBJECTS USING LASER TECHNOLOGY AND FOR APPLYING AN ABSORBER USING AN INKJET METHOD - The present invention relates to a process for the bonding of material for the production of three-dimensional objects by selective heating via a laser of wavelength from 100 to 3000 nm. The beam spot may be a focused or unfocused beam spot, or may indeed be spread, as is the case with the diode laser, where the bars may have a stacked arrangement. The selectivity of the melting process is achieved via the application of an absorber to certain subregions of a layer composed of a pulverulent substrate, and then heating of the absorber by laser radiation of wavelength from 100 to 3000 nm. The heated absorber transfers the energy present therein to its surrounding pulverulent substrate, which is melted thereby and, after cooling, has firm cohesive bonding. | 09-10-2015 |