Bayer Aktiengesellschaft

Fritz Feld

Konrad Ellegast

Heinrich Nassenstein

Roland Weisbeck

Richard Menold

Karlheinz Feltgen

Gunter Oppermann

Armin Kohler

Lothar Ruetz

Wolfgang Kuhn

Horst Greiner

Hans G Gelhaar

Friedrich W Elsasser

A system-integrated motion sensor is provided for monitoring and adjusting EVF system. The motion sensor is based on the concept that, with the aid of electrodes (4,5) that are already present and which are used for the viscosity control of the EVF in a hydraulic system, an electric current signal is simultaneously produced which is directly related to the rate of flow of the EVF between the electrodes. The electrodes are either stationary or can be displaced with respect to each other. Thus the motion sensor consists of the electrodes with the intermediate EVF layer and a circuit connected to the electrodes for measuring the electric signal produced by the motion. The measured signal thus obtained can advantageously be used for adjusting or controlling the viscosity of the EVF layer. For this purpose the measured signal is compared with a preadjusted value and the difference is used for controlling a high-voltage device which provides an output voltage dependent on the control voltage. This output voltage is fed back to the electrodes of the EVF layer and in turn influences the viscosity. Thus the measuring sensor for the motion, that is the EVF layer together with the associated electrodes, simultaneously forms the regulating unit for controlling the motion.

Sensor-controlled hydraulic system with electroviscous fluids

This invention relates to an apparatus for applying a thin layer of liquid systems to fibers, threads or sheets which are moved uniformly in a linear direction which comprises continuously foaming the liquid system and bringing the threads, fibers or sheets into contact with the foamed system by a one-way process.

Apparatus for coating fibers, threads and sheets

The invention is related to a process for the quantitative application of liquid systems in a thin layer to natural or synthetic fibres or filaments travelling uniformly along a linear path by the one-way technique using a forced-dosage unit, distinguished by the fact that fibres or filaments are guided past at least one slot which is either curved or provided with partial curves, and are brought into contact with an optionally foamed liquid issuing from the slot.

Coating apparatus

Growing community of inventors

Leverkusen, Germany

Fritz Feld