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US 5,477,021 AGranted
Centrifuge-drum disk
AssigneeWestfalia Separator AG
InventorsWerner Kohlstette, Walter Tohermes, Alfons G. Beikel
Life of this patent
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Abstract
Spacers are roller welded or laser welded to a disk, welding the interstices between the spacers and the disk liquid tight. Nothing can accordingly accumulate in the interstices to contaminate the centrifugate.
Claims1
A method of producing a centrifuge drum disk comprising the steps of:
- forming spacers from strips, each having circumferential edges;
- providing a drum disk with an outer surface;
- connecting the spacer strips to the outer surface of the disk at a tip portion thereof by laser beam welding each spacer strip solely along all of the circumferential edges thereof to produce a liquid tight weld with a midline of a base thereof left unwelded, whereby accumulations between the strip and the outer surface of the disk are prevented.
Dependencies are inferred from the claim text.