Patent ID: 8257473
Filing Date: 2012-09-04
Classification: B01D

Abstract:
1. A sieve bed for use in an oxygen concentrator system, comprising: an inlet end; an outlet end; a retainer disposed toward the inlet end and including an interior portion, an exterior portion, a plurality of openings disposed toward the exterior portion, and a passage disposed toward the interior portion; an inlet cap disposed proximate the retainer and an inlet port disposed proximate the inlet cap and configured to receive a feed stream, wherein the inlet cap includes at least a portion spaced from the retainer to thereby define an inlet chamber wherein the inlet chamber is in fluid communication with the inlet port and the plurality of openings; an outlet lid disposed toward the outlet end; an exterior wall extending at least from the inlet cap to at least the outlet lid; an intermediate wall spaced from the exterior wall and extending from about the retainer toward and terminating short of the outlet lid; and an interior wall spaced from the intermediate wall and extending at least from the retainer proximate the passage to at least the outlet lid.