Abstract:
Temperaturfühler mit einem Fühlerrohr und einem darin angeordneten Fühlerstab, wobei das Fühlerrohr und der Fühlerstab unterschiedliche Wärmeausdehnungskoeffizienten aufweisen, und wobei das eine Ende des Fühlerstabes an einem Endstück im Bereich des freien Endes des Fühlerrobres abgestützt und das andere Ende des Fühlerstabes als Betätigungsglied einer Schaltkontakt-Einheit ausgebildet ist, bei welchem vorgesehen ist, daß das Endstück (38) des Fühlerrohres (15, 15', 15") durch eine das freie Ende des Fühlerrohres (15, 15', 15") abschließende Rohrkappe (39) gebildet ist, die unlösbar mit dem Fühlerrohr (15, 15', 15") verbunden ist, und daß das eine Ende des Fühlerstabes (16) an der dem Inneren des Fühlerrohres (15, 15', 15 ") zugekehrten Innenseite der Rohrkappe (39) abgestützt ist.
Abstract:
Disclosed is a method for producing a metal-ceramic substrate. According to said method, a metal layer (3, 4) is applied to at least one face of a ceramic substrate or a ceramic layer (2) by means of a direct bonding process, and the metal-ceramic substrate or partial substrate is aftertreated in a subsequent step at a gas pressure (aftertreatment pressure) ranging approximately between 400 and 2000 bar and an aftertreatment temperature ranging approximately between 450 and 1060° C.
Abstract:
Electrical bushing, in particular for pressure applications, with a housing with at least one housing passage and with at least one electrical conductor, which is passed through the housing passage, protrudes at both ends on two housing sides, which are spaced apart from one another, out of in each case one opening of the housing passage out of the housing and is fixed in the housing by means of a tightly sealing material which fills at least the majority of the housing passage.
Abstract:
The invention relates to a heating element for electric hot plates, particularly for glass ceramic plates, which is provided in the form of elongated strips (1) having a length LR, a height hR and a thickness sR, is made of an electrically conductive material having a specific resistance PR, and which, when in an operational position, is placed on end on a thermally insulating support. The strip (1) has, on the side facing the support, tabs (3) having a height hS and a width bS, which intermesh with the support by a meshing depth e of a portion of the height hS. Gaps (4) having a height hS and a width bF are formed between said tabs (3) and create aerating gaps over the distance height hS minus the meshing depth e. In order to obtain a predetermined resistance RN corresponding to a desired nominal output PN of the heating element, the height hR of the strip (1) is dimensioned according to the resistance RT with regard to a defined measurement length Lm and/or according to the average thickness sm of the strip.
Abstract:
Die Erfindung bezieht sich auf einen neuartigen Kühler zur Verwendung als Wärmesenke für elektrische oder elektronische Komponenten, insbesondere Bauelemente, Schaltkreise und Module, wobei der Kühler (1,1a,1 b) wenigstens eine Kühlerfläche für elektrische oder elektronische Komponenten (2) bildet und zumindest teilweise aus mehreren stapelartig übereinander angeordneten und flächig miteinander verbundenen Kühlerlagen (5-8) besteht, von denen zumindest einige Lagen (7,8) derart strukturiert sind, daß sie im Inneren des Kühlers (1,1a,1b) zwischen wenigstens einem Einlaß (3,3a,10) und wenigstens einem AusIaß (4,4a,11) für ein Kühlmedium bzw. wärmetransportierendes Medium wenigstens eine zumindest zweidimensionale Kühlerstruktur mit sich zumindest in zwei Raumachsen verzweigenden Strömungswegen für das Kühlmedium bilden.
Abstract:
The present invention relates to the use of a process for hydrogen production in which at least a part of a hydrocarbonaceous feed gas (a) is passed into a reformer (c), wherein the feed gas is contacted in the reformer with a catalyst and the feed gas is converted to hydrogen and solid carbon, for the direct production of a hydrogenous gas at filling stations for sale to a consumer, and also to a reactor (d) for hydrogen production.
Abstract:
A mould for producing an article to be formed therein is provided wherein the mould matrix material contains at least one type of carbon fibres. The mould matrix material comprises a phenolic resin. Thereby, a high operating temperature of the mould matrix material and a wear resistant mould can be achieved. Hence, use of the mould in a series production becomes possible. Preferably, the mould matrix material comprises carbon nano fibres.
Abstract:
The invention relates to a CCVD method for producing tubular carbon nanofibers on a support by catalytically depositing carbon out of the vapor phase. The inventive method is characterized in that a catalyst layer, which is deposited without current and which is based on nickel or cobalt, is applied to the support at least in places. Said catalyst layer is thermally activated before depositing carbon out of the vapor phase in a reducing atmosphere.