Liquid purification or separation – Filter – Movable medium
Reexamination Certificate
2006-12-26
2006-12-26
Lithgow, Thomas M. (Department: 1724)
Liquid purification or separation
Filter
Movable medium
C210S400000, C210S401000
Reexamination Certificate
active
07152745
ABSTRACT:
A method and apparatus for sealing the opposed side edges of a fluid treating belt filter (3) by employing an inflatable elastic tube (18). Opposed sealing surfaces are spaced apart from each other defining a gap there between which can be brought into sealing relationship by activation of the tube (18). The tube (18) being tested prior to and during sealing. Fluid that bypasses the seal are collected for rycycle.
REFERENCES:
patent: 2867324 (1959-01-01), Hirs
patent: 3899426 (1975-08-01), Hirs
patent: 4390428 (1983-06-01), Bratten
patent: 5089143 (1992-02-01), Anderson
patent: 5449455 (1995-09-01), Womack
Croket Frank M.
Duncum Richard L.
Pahl Brian W.
Crowell & Moring LLP
Filterwerk Mann & Hummel GmbH
Lithgow Thomas M.
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