US 5,851,389 AGranted

Apparatus for removing a contaminant from a fluid stream

AssigneeCSK Technical, Inc.

InventorsMichael D. Brewster, Richard P. Posa

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Abstract

A device for removing a contaminant from a fluid stream flowing within a conduit is disclosed. The device includes a container and a barrier. The container has a first wall generated about an axis and a second wall generated about the same axis. The first wall defines a first volume therewithin, while the first and second walls define an annular second volume therebetween. Both the first and second volumes are sealed at one end of the device, while at the other end of the device the second volume only is sealed. A filter material occupies the second volume. The first and second walls are permeable to the fluid stream and are capable of retaining the filter material in the second volume. The barrier is impermeable to the fluid stream and creates a seal between the second wall and the conduit wall. The barrier is positioned adjacent the other end of the device such that when the other end of the device is the upstream end, the fluid stream must sequentially pass into the first volume, through the first wall, into the second volume and through the filter material, and through the second wall.

Claims11

Dependent claims

A device arranged to be longitudinally inserted and removed from a conduit, and arranged to be positioned at a desired location along said conduit to remove a contaminant from a fluid flowing through said conduit, comprising:

a container having an axis, said container having:
a first wall generated about said axis, said first wall being permeable to said fluid stream;
a second wall generated about said axis, said second wall being spaced from said first wall and being permeable to said fluid stream;
said first wall defining a first volume;
said first and second walls defining a second volume therebetween;
a first member sealing said first and second volumes at one end of said container;
a second member sealing said second volume at the other end of said container;
said second volume occupied by filter material;
a expandable barrier impervious to said fluid stream positioned adjacent said other end and selectively forming a seal between said second wall and the wall of said conduit;
such that said device may be longitudinally inserted into said conduit and moved to a desired position therealong, and said barrier may be selectively expanded to seal the space between said second wall and said conduit wall, so that said fluid stream flowing through said conduit will be sequentially directed into said first volume, through said first wall, into said second volume where said filter material removes said contaminant from said fluid, and through said second wall.

7 more elements

Dependencies are inferred from the claim text.