An apparatus is disclosed for maintaining a fluid seal with a moving substrate. The apparatus includes an enclosure and a cap. The enclosure has a first surface and a second surface with the first surface being in sealing contact with the moving substrate. The cap seals off the second surface of the...http://www.google.es/patents/US6318727?utm_source=gb-gplus-sharePatente US6318727 - Apparatus for maintaining a fluid seal with a moving substrate
Apparatus for maintaining a fluid seal with a moving substrate
