Piston ring for an internal combustion engine
OwnerHans-Gunter Seiler, Rainer Ulrich Melzerinventors
Life of this patent
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Abstract
Piston ring for an internal combustion engine, comprising a running surface, and upper and a lower flank surface and an inner circumferential surface, wherein at least one of said surfaces is provided with at least one marking which is formed in the manner of a matrix, characterized in that the surface region which contains the marking is of brighter configuration in order to produce a background surface for the matrix than the surface regions of the piston ring which immediately adjoin in at least outside the matrix.
Claims11
1-6. (canceled)
A piston ring for a combustion engine including a running surface, an upper and a lower flank surface as well as an inner circumferential surface;
- at least one of said surfaces being provided with at least one marking in a background surface region of said surfaces in the form of a matrix:
- wherein said background surface region containing said at least one marking is brighter than a surface region adjacent said background surface region and that said background surface region is created through laser smoothing.
A method of marking a piston ring of a combustion engine with an indicia, comprising laser smoothing a background surface region of at least one of a running surface, an upper surface, a lower flank surface and an inner circumferential surface such that said laser smoothed background surface region is brighter than an adjacent surface region of the at least one surface on which the background surface region is created;
- and marking the laser smoothed background surface with an indicia.
Dependencies are inferred from the claim text.