Device for testing the scratch resistance of surfaces

Abrading – Machine – Sandblast

Reexamination Certificate

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Details

C451S102000

Reexamination Certificate

active

06852018

ABSTRACT:
A device for testing the scratch resistance of a surface of a test specimen by means of a gas stream charged with solid particles, comprising:a tube, having an entry and an exit, for directing the gas stream on to a specimen holder with the surface to be tested,a means for providing the gas stream, anda metering device positioned along the tube for metering the solid particles into the gas stream,wherein a tube part is angled at an angle in the region of the tube exit and the angled tube part has, at the angle, an opening at which the specimen holder is positioned such that the gas stream is directed on to the specimen holder.

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