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AssigneeDaimler-Benz Aktiengesellschaft
InventorsHerbert Gensel, Winfried Michels, Gerhard Jooss, Peter Mertes
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The invention relates to marking of industrial products or individual parts thereof by burnt-in alphanumeric symbols and/or company symbols. To be able to apply in a space-saving and cost effective way a machine-readable, informationally identical additional coding, this additional coding is applied, integrated in the symbol, in such a way that distinctly deeper burnt-in locations, which are in themselves machine-detectable, are arranged along the trace of each and every symbol at several predetermined places distributed in a manner individual to the symbol. The deeper burnt-in locations may take the form of a blind hole, for example in the case of cast workpieces, or of a through-hole, for example in the case of sheet metal components. The additional coding can be applied in the same operation as the basic marking without noticeable time loss and without requiring additional space.
Marking arrangement for an article utilizing a series of energy beam generated first and second sets of depressions arranged in a surface of the article to together form a visible symbol:
Method of marking industrial products comprising utilizing a high energy beam for burning in of first coded symbols composed each of a plurality of burnt-in locations connected together to form said respective symbols, and simultaneously burning in at least some of said locations to a deeper depth to form a secondary coded symbol, said first and second coded symbols being machine readable separately of one another.
Method of marking an article comprising the step of:
Dependencies are inferred from the claim text.