Electric heating – Metal heating – By arc
Patent
1994-10-12
1995-12-19
Paschall, Mark H.
Electric heating
Metal heating
By arc
21912164, 494 85, 29DIG48, 228182, B23K 2600
Patent
active
054770211
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.
REFERENCES:
patent: 1293871 (1919-02-01), Murray
patent: 1782234 (1930-11-01), Hofmann
patent: 1851527 (1932-03-01), Shee
patent: 1853549 (1932-04-01), Clark
patent: 2567012 (1951-09-01), Donelan
patent: 3562478 (1971-02-01), Bennett
patent: 3836431 (1974-09-01), Flipot et al.
patent: 4792317 (1988-12-01), Sipsma
patent: 5066846 (1991-11-01), Pirl
Beikel Alfons G.
Kohlstette Werner
Tohermes Walter
Paschall Mark H.
Westfalia Separator
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