Nonparticulating adsorbent recirculating filter
AssigneeW. L. Gore & Associates, Inc.
InventorsEdwin G. Dauber, Douglas B. McKenna, Michael S. Winterling
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Abstract
The present invention is an improved sorbent filter for use in both particulate filtration and absorption of gaseous contaminants in a variety of applications, such as for filtration in a computer disk drive. The filter of the present invention provides previously unavailable levels of combined particulate filtration and contaminant sorption while being capable of ready reconditioning (such as through washing with D.I. water).
Claims18
A sorbent filter for selectively sorbing contaminants present in an environment, the filter having a height, depth and length, the sorbent filter comprising:
- at least one protective support layer;
- at least one filter layer;
- an inner sorbent core, the core including a soluble sorbent therein for removing contaminants from the environment;
- wherein the support layer and the filter layer cover the core and allow the filter to be washed without removing sorbents from the core.
A sorbent recirculation filter for selectively sorbing contaminants present within an enclosed environment housing sensitive equipment that comprises:
- an inner sorbent core having soluble sorbent material therein;
- and
- a hydrophobic cover surrounding the core, the cover including a filtration layer comprising a hydrophobic porous expanded polytetrafluoroethylene;
- wherein the core and cover combine to provide a filter that can be washed to remove ionic contamination without damaging the sorbent material.
Dependencies are inferred from the claim text.