Patent ID: 7955073

Claim:
A flame arrester arrangement which is formed from two metal strips ( 8 , 9 ) which are wound together to form a disk having an approximately circular outer circumference and of which a first metal strip ( 8 ) is a smooth strip and the second metal strip ( 9 ) is a corrugated strip having defined corrugation, the two strips ( 8 , 9 ), by bearing against one another, forming defined gaps ( 11 ) for passage of a fluid and being held in position relative to one another by fixing pins inserted into radial bores ( 6 ), wherein the bores ( 6 ) are incorporated by spark erosion drilling without deforming the first metal strip or the corrugation formed in the second metal strip, such that the defined cross-sections of the gaps ( 11 ) are retained unchanged in the region of the bores ( 6 ) in the manner defined by the first strip and the corrugation of the second strip; wherein the gaps are closed on both sides by retaining plates during the spark erosion drilling and cooling fluid is injected into the gaps during the spark erosion drilling.