Liquid purification or separation – Particulate material type separator – e.g. – ion exchange or... – Within flow line or flow line connected closed casing
Reexamination Certificate
2004-08-24
2008-08-12
Stoner, Kiley (Department: 1793)
Liquid purification or separation
Particulate material type separator, e.g., ion exchange or...
Within flow line or flow line connected closed casing
C228S178000
Reexamination Certificate
active
07410578
ABSTRACT:
A filter underdrain apparatus and a method for manufacturing such apparatus. The apparatus includes a cover member, a water orifice member and a bottom member, each being individual pieces. The cover is placed over the water orifice member and connected thereto by welding. The bottom member is likewise connected to the cover and water orifice members by welding. A water passageway and an air passageway are defined in the inside of the assembled members. Water egress from the water passageway is provided by holes in the water orifice member and the cover. Air egress from the air passageway is provided by holes in the cover.
REFERENCES:
patent: 4133766 (1979-01-01), Adie
patent: 5019259 (1991-05-01), Hambley
patent: 5149427 (1992-09-01), Brown et al.
patent: 5232592 (1993-08-01), Brown et al.
patent: 5865999 (1999-02-01), Shea et al.
patent: 5976370 (1999-11-01), Medworth
patent: 6989096 (2006-01-01), Roberts et al.
patent: 7138056 (2006-11-01), Hambley et al.
patent: 7174688 (2007-02-01), Higginbotham
patent: 2005/0109706 (2005-05-01), Hambley et al.
Bassett, II Govert
Carothers Cole
Hambley David M.
Hambley Philip
Newtech Filter Systems, Inc.
Stoner Kiley
Uren John R.
LandOfFree
Underdrain apparatus and method of manufacturing same does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Underdrain apparatus and method of manufacturing same, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Underdrain apparatus and method of manufacturing same will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4011829