Apparatus for maintaining a fluid seal with a moving substrate
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United States of America Patent
Stats
-
Nov 20, 2001
Grant Date -
N/A
app pub date -
Nov 5, 1999
filing date -
Nov 5, 1999
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
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 enclosure. The cap is secured to the enclosure at at least two spaced apart locations and has a non-secured portion that is capable of deflecting independently of the enclosure. The apparatus further includes means for introducing a pressurized fluid into the enclosure. The pressurized fluid creates a net force on the enclosure of zero and a force on the cap which causes a portion of the cap to deflect. The deflection of the cap allows the first surface of the enclosure to remain in sealing contact with the moving substrate.
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