Abstract: The invention relates to a stereolithography apparatus comprising: a container for a fluid material curable by radiation, a substrate plate, an actuator means for generating a relative movement between the container and the substrate plate, and an irradiation device for selectively irradiating the material arranged in the container. According to the invention, the actuator means and the irradiation device are mounted on a frame assembly, and the container and the substrate plate are combined to form an assembly and the assembly consisting of the container and the substrate plate is jointly inserted into the frame assembly, detachably secured therein by means of an attachment means and to be jointly removed from the frame assembly.

Abstract: The invention relates to a stereolithography apparatus comprising: a container for a fluid material curable by radiation, a substrate plate, an actuator means for generating a relative movement between the container and the substrate plate, and an irradiation device for selectively irradiating the material arranged in the container. According to the invention, the actuator means and the irradiation device are mounted on a frame assembly, and the container and the substrate plate are combined to form an assembly and the assembly consisting of the container and the substrate plate is jointly inserted into the frame assembly, detachably secured therein by means of an attachment means and to be jointly removed from the frame assembly.

Abstract: The invention relates to an apparatus for contactless temperature measurement of a melting charge located in a melting crucible 2 inside a melting furnace, in particular a furnace for precision casting, by means of a pyrometer 5 with an optical system 8 and at least one sensor 6 optically connected to said optical system 8, wherein said optical system 8 can be directed by means of a sight glass 18 onto at least one section of the melting crucible 2. In order to reduce soiling caused by smoke gas deposits on the sight glass, a tube is provided which is connected at its upper end to the sight glass 18, extends into a melting chamber 11 of the melting furnace and can be pointed in the direction of the melting crucible 2.

Abstract: A process for the production of green ceramic preforms for dental parts involves introducing a model into ceramic slip in a slip container for coating the model. Ceramic slip is controllably drawn off from the slip container and the coated model removed. An apparatus for producing green ceramic preforms includes an opening in the slip container through which flow of the ceramic slip is controllable. The green ceramic preform may be used to produce a dental part. Conduit means are so arranged on the slip container that ceramic slip can be controlledly drawn off out of the slip container through the conduit means.

Abstract: The invention relates to an apparatus for contactless temperature measurement of a melting charge located in a melting crucible 2 inside a melting furnace, in particular a furnace for precision casting, by means of a pyrometer 5 with an optical system 8 and at least one sensor 6 optically connected to said optical system 8, wherein said optical system 8 can be directed by means of a sight glass 18 onto at least one section of the melting crucible 2. In order to reduce soiling caused by smoke gas deposits on the sight glass, a tube is provided which is connected at its upper end to the sight glass 18, extends into a melting chamber 11 of the melting furnace and can be pointed in the direction of the melting crucible 2.

Abstract: An operational check of the safety unit or the safety circuit takes place within the delay time of the relay, assigned to each motor, caused by the pick-up delay or the release delay. Also, the control unit can be equipped such with at least one safety component and/or safety circuit for controlling the control unit that an operational check of the control unit takes place between the operation of an operating element of the hand switch and the starting of the motor or motors. The operating time and the release time of the relay may be delayed by a suitable component so that sufficient time is available for the operational check.

Abstract: The invention concerns an apparatus 1 for carrying out a melting and casting operation in the fine casting art comprising a melting crucible 2 for receiving melting charge, a heating device 3 for heating the melting charge in the melting crucible 2, and a pyrometer 8 for ascertaining the temperature of the melting charge. In order to improve the quality of the products manufactured with such an operation the invention provides that the apparatus 1 is provided with a control device 4 for controlling the melting and casting operation in dependence on the ascertained melting charge temperature, wherein the control device 4 has a database 16 with a plurality of selectable, respectively melting charge material-specific parameter sets PS1, PS2, PS3 each with one or more parameters for configuring the pyrometer 8.

Abstract: An electric-motor drive having a control unit, which can be operated by a hand switch and contains a control bar, and, in addition, being equipped with a safety unit or a safety circuit, is to be designed such that the first-fault safety requirement is met which is demanded by the electric appliance standard, so that an operator or a user will not be endangered when, as a result of a failure or a defect of an electric or electronic component, a required switching operation can no longer be triggered, or that, in the event of a failure of an electric or electronic component, the electric-motor device cannot be started.

Abstract: A multiple electrical connector comprising a terminal strip having a bore extending therethrough, a pair of conductor sockets mounted back to back on the terminal strip at the bore and an electrical terminal attached to the terminal strip. One of the pair of conductor sockets has a post and the other has a post receiving bore with the post and the post receiving bore aligned with the terminal strip bore and with each other. The connector socket post extends through the terminal strip bore and into the post receiving bore of the other of the connector sockets with the socket post riveted to the other connector socket.

Abstract: For a conductor-connecting element for connecting electrical conductors, in which element contact with electrical conductors is made with the aid of insulation-displacement contacts in the guide ducts of a conductor-guiding part, it is proposed that the conductor-guiding ducts be constructed in a conductor-guiding part in such a way that deflection of the electrical conductors takes place at different levels or sequentially, as a result of which the insulation-displacement contacts make contact with the electrical conductors one after another so that a distinct reduction in the expenditure of force is achieved. An insulation-displacement contact formed to receive electrical conductors with different diameters may be used.

Abstract: For a sealing insert of a cable gland it is proposed that the sealing insert be provided with a peripheral step which is adapted to a peripheral step in the pressure screw and that the sealing insert be provided on its outer diameter on the cable insertion side with a conical bevel which is adapted to the conical bevel of the pressure screw, the angle of the bevel of the pressure screw being designed to be more acute relative to the longitudinal axis.

Abstract: A tension-relieving assembly for electrical and/or optical conductors of a cable, wherein the conductors, which are guided in parallel in the cable, are held in a cable-guiding part and are inserted in conductor-guiding ducts in a conductor-guiding part, and wherein the axes of the conductors in the cable-guiding part and in the conductor-guiding part are offset relative to one another. The conductor-guiding part is provided, at the lead-in end for the conductors, with an annular collar, and a central peg is disposed in the annular collar. The cable-guiding part is constructed, at the conductor exit end, with a stepped recess, such that when the cable-guiding part and conductor-guiding part are joined together, the central peg is pressed between the conductors and forces the conductors outwards against the inner contour of the stepped recess in the cable-guiding part.