Abstract: The present invention relates to a sun visor for a motor vehicle, with a planar, elongate main visor body which is mounted rotatably on a rotary spindle running approximately perpendicularly to the longitudinal extent of the main visor body, the rotary spindle being coupled to a main swivel spindle for swivelling the main visor body from a not-in-use position into a use position and vice versa, the main swivel spindle, in the not-in-use position, being integrated in the roof (6) of the motor vehicle parallel to the longitudinal extent of the main visor body and at a distance from the same.

Abstract: Disclosed is a capacitance level measuring device comprised of a container whose level is to be measured and a probe inserted into and spaced from the container. The capacitance between the probe and container varies in relation to the level in the container. A capacitance measuring circuit determines the capacitance between the probe and container and thus indicates the level in the container. The integrity of the probe is verified by constructing the probe so as to include it in a series circuit, as well as the capacitance measuring circuit, and a lack of continuity in the probe is indicative of questionable probe integrity. The question as to the probe's integrity would indicate a questionable level indication from the capacitance measuring circuit. Various probe constructions are also disclosed.

Abstract: An arrangement for determining the level in a container includes a capacitive probe disposed in the container, a measuring transducer arranged in the vicinity of the container, and a remote evaluation apparatus. The measuring transducer produces a signal corresponding to the capacitance between the probe and the container. This signal, which is indicative of the level in the container, is transmitted from the transducer to the evaluation apparatus via a two-wire line, which also transmits the current supply DC voltage from the evaluation apparatus to the transducer. The transducer includes a switch for periodically switching from the probe capacitance to a test capacitance. The evaluation apparatus comprises a time control circuit which periodically varies or interrupts the DC voltage on the two-wire line, and the transducer includes a control circuit which responds to the voltage changes to actuate the switch.

Abstract: A capacitive sensor for detecting variations of an electric field surrounding the sensor and produced by an electronic circuit connected to it, resulting when the probe is approached or covered by a solid or fluid medium. A pot-shaped, metallic sensor electrode is fitted within a hollow, closed body member of insulating material. A thin conductor is connected to the electrode and extends longitudinally through the body member, the space between the conductor and the interior walls of the body member being filled by air.