Liquid purification or separation – Flow – fluid pressure or material level – responsive – Maintaining stream pressure or flow
Patent
1984-01-11
1985-05-21
Fisher, Richard V.
Liquid purification or separation
Flow, fluid pressure or material level, responsive
Maintaining stream pressure or flow
137547, 210352, 210431, 210432, 251120, B01D 3502
Patent
active
045184933
ABSTRACT:
A noise attenuating filter for use in a fluid flow systems which includes a cylindrical body defining a plurality of arcuate open-ended passageways extending longitudinally therethrough, a corresponding plurality of small radial slots in one end thereof communicating with the passageways and a closing member biased outwardly from the slotted end of the cylindrical body so that during use, fluid flows about the closing member and into and through the arcuate passageways until such time as the fluid pressure on the closing member causes the closing member to cover the upstream end of the annular passageways whereupon the fluid is caused to travel into the passageways through the smaller radial slots thereby reducing the volume of flow through the system and attenuating the noise of the fluid flow while additionally preventing the passage of large particles through the system. When the pressure on the closing member is reduced, the closing member snaps outwardly clearing the filter of any particles accumulating therein.
REFERENCES:
patent: 3994029 (1976-11-01), Badders
patent: 4257452 (1981-03-01), Hill et al.
Fisher Richard V.
Jones W. Gary
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