Other

U.S. Philips Corporation

Rolf Schafer

Bernhard Wubbels

Peter Hirsch

Hans Peter Stormberg

Reinhard Kersten

Hans G Ganser

Sumanjit Singh

Wolfram Pejas

To record times and intermediate times at sporting events, especially large and multi-discipline events, a method is proposed for immediately establishing the result, by which a large number of recording stations are positioned along the competition track which are connected to a central station, which evaluates the arriving information in a wireless or wire-bound manner, that every recording station has a frame antenna to absorb energy in the high-frequency range as well as to receive high-frequency signals and each athlete is handed a passive high-frequency transmitter with a personal code, which he holds in the recording station when the respective station is reached, whereby the recording station first re-charges the high-frequency transmitter via an antenna, afterwards the high-frequency transmitter passes the code to the recording station, the code is received by the recording station and is immediately passed with a further code from the recording station to the central station, where evaluation is carried out.

Process for recording intermediate and final times in sporting events

A method of operating a high-pressure metal vapor discharge lamp at a periodic operating voltage of more than 500 Hz wherein the operating voltage is suddenly varied in phase at intervals, and preferably also wobbled in frequency, in order to avoid acoustic resonances in the lamp.

Method of operating a high-pressure metal vapor discharge lamp and

A method of improving the reproducibility of the welds in an electric spot welding machine comprises prior to the initiation of a welding operation passing a preheating current of lower magnitude than the welding current through the parts to be welded. When either the total electrical workpiece resistance of the parts to be welded has fallen below a given limit or when its rate of decrease is slower than a predetermined limit the changeover from preheating current to welding current is effected.

Method of ensuring the maintenance of constant quality of spot welds

In an apparatus for electroslag welding of steel sheets with the aid of at least one wire electrode pair, a welding gap defined between the electrodes of the electrode pair, current-carrying conduits for the electrode pair, and a supply tube for supplying metal in a powdered state, and welding flux into the welding gap, the improvement includes a shielding device creating a duct along the current-carrying conduits. The duct, owing to the shielding device, is substantially free of any magnetic field, and the supply tube is positioned in the duct.

Apparatus for welding steel sheets

A method of and apparatus for welding sheet steel panels by submerged arc welding is described. By providing one or, depending on the thickness of the sheet steel panels, more than one pair of closely spaced wire electrodes in the weld gap with the simultaneous introduction of additional filler metal carrying no current, preferably in the form of a metal powder, disadvantages associated with known methods may be avoided.

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Aachen, Germany

Rolf Schafer