Abstract: The present invention refers to a method of infiltrating enamel for the prevention and/or treatment of carious lesions comprising (a) exposing an enamel area to a conditioner comprising hydrochloric acid; (b) exposing the conditioned enamel area to an infiltrant; and (c) curing the infiltrant. The present invention further refers to a kit for carrying out the method of infiltrating enamel, which comprises a conditioner comprising hydrochloric acid and an infiltrant comprising at least one low viscous dental resin. Alternatively, the kit comprises ready-to-use means for carrying out the method of infiltrating enamel, e.g. application strips with delivery pads soaked with conditioner or infiltrant. The present invention also refers to a method for identifying an infiltrant by calculation of the penetration coefficient, and to an infiltrant identified by the method having a penetration coefficient of >50 cm/s or comprising a low viscous light curing resin having a penetration coefficient of >50 cm/s.

Abstract: A flat seal having at least one metallic layer is disclosed, wherein the at least one metallic layer at least partially comprises a profile having an undulated structure in the cross-section on the side of the metallic layer. The profile on the side opposite of the undulated structure has a contour in which rounded sections and those provided with edges alternate.

Abstract: An interface device for a communication network comprises a plurality of first communication nodes and a plurality of second communication nodes, wherein the interface device comprises a switching unit and a transmit-/receive aerial. The switching unit is capable of being coupled, so as to be able to communicate, to each of the first communication nodes and to each of the second communication nodes, and is configurable for transmitting a communication message between one of the first communication nodes and a second communication node, which may be unambiguously allocated to said first communication node. The switching unit may be coupled to the transmit-/receive aerial for wireless communication with each of the second communication nodes by way of the transmit-/receive aerial that may be shared for communicating with each of the second communication nodes.

Abstract: An interface device for a communication network comprises a plurality of first communication nodes and a plurality of second communication nodes, wherein the interface device comprises a switching unit and a transmit-/receive aerial. The switching unit is capable of being coupled, so as to be able to communicate, to each of the first communication nodes and to each of the second communication nodes, and is configurable for transmitting a communication message between one of the first communication nodes and a second communication node, which may be unambiguously allocated to said first communication node. The switching unit may be coupled to the transmit-/receive aerial for wireless communication with each of the second communication nodes by way of the transmit-/receive aerial that may be shared for communicating with each of the second communication nodes.

Abstract: The invention relates to a method for the diagnosis of a sensor in connection with control of a combustion engine. The method includes feeding fuel under pressure (p) to the engine, detecting the pressure (p) by means of the sensor, and controlling the air/fuel mixture based on to the operating state of the engine. The invention involves an intentional modification of both the pressure (p) and injection time period (tinj) during which fuel is fed to the engine. The modifications are selected in such a way that substantially no change in the fuel flow (F) to the engine is obtained. A check is performed to determine if the modifications of the pressure (p) and injection time period (tinj) result in any unallowable deviation in the operating state of the engine. If so, an indication that the sensor is defective is provided. With the invention, an improved diagnosis method for checking the functioning of a fuel pressure sensor is provided.

Abstract: The invention relates to a pneumatic spring arrangement (1) comprising at least the following components, namely a pneumatic spring lid (2), a pneumatic spring piston (3), pneumatic spring bellows (7), a vibration damper (11) with a rucksack module (14; e.g. an ADS module) and a protective collar (17) with a first connection area (B; inside diameter D1) and a second connection area (B′; inside diameter D2). The inventive pneumatic spring arrangement is characterized in that the inside diameters (D1 , D2) of the first (B) and the second (B′) connection area pertaining to the protective collar (17) have a size so that the protective collar can be slid over the ruck sack module (14). The excess free space within the second connection area (B′) of the protective collar (17) can be filled with an adapter element (18) in a compensating manner.

Abstract: Methods for testing leakage in a tank system are disclosed including sealing the tank system, creating a pressure variation in the sealed tank system, measuring the pressure values in the sealed tank system at predetermined time intervals for a measuring period, and comparing the shape of a curve formed by the measured pressure values to a predetermined curve for the system, whereby if that comparison exceeds a predetermined limit value, the leakage test is disregarded. Apparatus for carrying out such testing is also disclosed.