Liquid purification or separation – With drip – overflow or content draining feature
Reexamination Certificate
2005-09-06
2005-09-06
Drodge, Joseph (Department: 1723)
Liquid purification or separation
With drip, overflow or content draining feature
C210S312000, C210S313000, C210S411000, C210S445000, C210S459000, C210S497300, C239S014200, C239SDIG002
Reexamination Certificate
active
06939465
ABSTRACT:
A fluid filtering system for filtering dirt and other debris from fluids being conveyed in a pipeline for snow making apparatus and other devices. An upright pipe segment is connected to a horizontal pipe segment through a pipe elbow or angle for conveying fluid such as water and/or air under pressure from the horizontal pipe segment through the pipe angle and upwardly through the upright pipe segment. A filter is provided in the upright pipe segment adjacent its lower end and an external drain is disposed in the pipe angle directly under the filter to automatically flush and clean the filter when the drain is opened.
REFERENCES:
patent: 1579485 (1926-04-01), Pasquale
patent: 3794180 (1974-02-01), Blocker
patent: 4220176 (1980-09-01), Russell
patent: 5699961 (1997-12-01), Ratnik et al.
patent: 6241802 (2001-06-01), Spears et al.
patent: 6793148 (2004-09-01), Ratnik
Carothers & Carothers
Drodge Joseph
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