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Class Information
Number: 210/271
Name: Liquid purification or separation > Particulate material type separator, e.g., ion exchange or sand bed > With rehabilitation means > Surface traversing type
Description: Apparatus having rehabilitation means which moves in a path parallel to and above the upper bed surface with or without parts projecting into the bed.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7169303 |
Sorbent reactor for extracorporeal blood treatment systems, peritoneal dialysis systems, and other body fluid treatment systems |
Jan. 30, 2007 |
| 7090771 |
Filtration system underdrain |
Aug. 15, 2006 |
| 6942795 |
Modular filter system and method of repairing and/or replacing components thereof |
Sep. 13, 2005 |
| 6733670 |
Apparatus and method for rehabilitating a traveling bridge filter underdrain |
May. 11, 2004 |
| 6616852 |
Modular filter system |
Sep. 9, 2003 |
| 6228256 |
Apparatus for cleaning a pool bottom having a sand bed |
May. 8, 2001 |
| 6079969 |
Compactor |
Jun. 27, 2000 |
| 6007713 |
Self-cleaning undergravel filter |
Dec. 28, 1999 |
| 5891335 |
Filtration system with traveling plenum |
Apr. 6, 1999 |
| 5554281 |
Traveling bridge filter system and associated underdrain |
Sep. 10, 1996 |
| 5552045 |
Sliding shoe unit for automatic backwash filters |
Sep. 3, 1996 |
| 5476584 |
Backwash/rewash traveling bridge filter and related process |
Dec. 19, 1995 |
| 5286392 |
Launder with baffle system and regulatable air discharge structure |
Feb. 15, 1994 |
| 5232585 |
Denitrification system |
Aug. 3, 1993 |
| 5227077 |
Launder with baffle system for recovering filtration media in solution |
Jul. 13, 1993 |
| 5078873 |
Filter cleaning apparatus |
Jan. 7, 1992 |
| 4911831 |
Slow sand filters |
Mar. 27, 1990 |
| 4624783 |
Apparatus for granular media filter |
Nov. 25, 1986 |
| 4540487 |
Filter apparatus |
Sep. 10, 1985 |
| 4482457 |
Filtering apparatus |
Nov. 13, 1984 |
| 4481114 |
Sludge dewatering system |
Nov. 6, 1984 |
| 4382863 |
Sludge dewatering system |
May. 10, 1983 |
| 4219415 |
Method and apparatus for disposal of organic wastes |
Aug. 26, 1980 |
| 4199272 |
System for recharging aquifer and apparatus therefor |
Apr. 22, 1980 |
| 4190534 |
Waste water filtration and sludge removal system |
Feb. 26, 1980 |
| 4126551 |
Method and apparatus for handling solvent extraction crud |
Nov. 21, 1978 |
| 4082664 |
Filter and method |
Apr. 4, 1978 |
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