Patent application number | Description | Published |
20090079101 | Densification Process of Ceramics And Apparatus Therefor - The present invention relates to an arrangement for sintering a ceramic body, the arrangement including: an applicator defining a monomode microwave heating chamber; a thermal insulation structure disposed within the chamber; a susceptor disposed within the thermal insulation structure having a lower microwave coupling temperature than the ceramic body; the ceramic body arranged adjacent to the susceptor; a magnetron; and a temperature measurement device. Related methods are also described. | 03-26-2009 |
20090246739 | Furnace for the thermal treatment of a dental firing object - A furnace for the thermal treatment of at least one dental firing object, comprising a housing, a firing chamber, a firing chamber base, a heating device, and at least one optical temperature detection element which can be used to detect a temperature in the firing chamber and is intended to enable a contactless temperature measurement of a dental firing object in a simple manner. This is achieved by virtue of the fact that the firing object is mounted on and/or in and/or below and/or alongside a firing aid situated in the firing chamber, and the optical temperature detection element detects the temperature of the firing aid. | 10-01-2009 |
20100025394 | Apparatus for heating moldings, in particular dental ceramic molding - The invention relates to an apparatus for heating moldings, in particular dental ceramic moldings, with the aid of microwaves or a magnetic field, the apparatus having a susceptor surrounding the molding, in particular according to the type of a container that is closed, said susceptor absorbing microwave radiation or being heated by a magnetic field and emitting heat to the molding. Further, a shielding for electrical and/or magnetic fields is arranged in the path between the microwave oven or the induction coil and the molding, in particular at the inner wall of the susceptor. | 02-04-2010 |
20100025395 | Apparatus for the heating of molding, in particular dental-ceramic moldings - This invention relates to a device for heating moldings, in particular dental ceramic moldings with the aid of a microwave generator that impinges a susceptor with microwave radiation, said susceptor being arranged between the molding and the microwave generator. Preferably, the susceptor at least partially forms both an inner ring and an outer ring, and the molding is arranged between the inner ring and the outer ring. | 02-04-2010 |
20100249305 | SLIP FOR THE PREPARATION OF DENTAL CERAMICS BY A HOT-MELT INKJET PRINTING PROCESS - Slip for use in a hot-melt inkjet printing process which contains (A) ceramic particles, (B) wax and (C) at least one radically polymerizable monomer, and use of the slip to prepare dental restorations. Furthermore, a process for the preparation of a green compact is described, in which the slip is moulded in layers to the geometrical shape of the green compact and subjected to a radical polymerization in order to obtain a cured green compact. | 09-30-2010 |
20120308837 | Process for the generative preparation of ceramic shaped bodies by 3D inkjet printing - Process for the generative preparation of a shaped body in which (a) ceramic slips are applied in layers to a support and cured, (b) a further layer is applied to the cured layer from step (a) and cured, (c) step (b) is repeated until a body with the desired geometric shape is obtained, (d) the body is then subjected to a chemical treatment or a heat treatment to remove the binding agent (debindering), and (e) the body from step (d) is sintered, wherein at least two differently composed ceramic slips are used in steps (a) and (b) for the preparation of the layers. | 12-06-2012 |
20130213955 | Apparatus For Heating Moldings - The invention relates to an apparatus for heating moldings, in particular dental ceramic moldings, with the aid of microwaves or a magnetic field, the apparatus having a susceptor surrounding the molding, in particular according to the type of a container that is closed, said susceptor absorbing microwave radiation or being heated by a magnetic field and emitting heat to the molding. Further, a shielding for electrical and/or magnetic fields is arranged in the path between the microwave oven or the induction coil and the molding, in particular at the inner wall of the susceptor. | 08-22-2013 |
20150258732 | METHOD FOR THE CONSTRUCTION OF A SHAPED BODY - The invention relates to a method for the construction of a shaped body from photopolymerizable material by using lithography-based generative production, in which a layer of liquid photopolymerizable material is defined on a production platform, and is polymerized in an exposure region having a predetermined contour, a further layer of photopolymerizable material is defined, the layer defined last is polymerized in an exposure region having a predetermined contour for the layer defined last, and the latter two steps are repeated until a shaped body having a predetermined shape has been formed by the sequence of cured layers with contours predetermined layer by layer, each exposure in an exposure region having a predetermined contour being carried out by controlled activation of individual exposure elements in a two-dimensional array of exposure elements, each exposure element being assigned an image element, wherein the exposure of the exposure region is carried out by a common light source and by a two-dimensional light intensity modulator which is illuminated by the light source and which has a grid of individually controllable intensity modulators, in such a way that each illuminated intensity modulator forms and exposure element that exposes an image element in the exposure region, wherein a two-dimensional matrix is compiled for each exposure step of a layer, each element of the matrix being assigned to an exposure element in the array of exposure elements and control instructions for this exposure element being obtained in the form of a time-dependent function which individually establishes the intensity profile of the radiation of the exposure element over the exposure step, characterized in that, if a component of the intensity variation common to all time-dependent function of the intensity profiles of all exposure elements to be activated exists as a general intensity variation in an exposure step, this general intensity variation is carried out by controlling the intensity of the light source in accordance with the general intensity variation. | 09-17-2015 |