Patent ID: 6238558
Filing Date: 2001-05-29
Classification: B01D,B29B,B29C

Abstract:
A filter changer comprising, in combination,a body defining longitudinally aligned upstream and downstream fluid flow passages and a channel transverse thereto and communicating therebetween,filter carrier means comprising a slide plate in the channel having an aperture, a filter in the aperture, and means for translating the slide plate for moving the filter between an operative position communicating between said passages and a position external to said body, said body having an annular downstream seat bearing on the filter carrier means about said aperture in the operative position,an annular upstream seal ring slidable in said body, bearing on the filter carrier means about said aperture in the operative position, and having an externally tapered surface, the upstream flow passage being formed to apply fluid pressure to said ring over an effective area greater than the effective area thereof exposed to the downstream fluid pressure, anda plurality of screws threaded in said body and having the ends thereof adjustably engageable with said tapered surface for applying a longitudinal component of force to said upstream seal ring against said filter carrier means.