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Class Information
Number: 210/272
Name: Liquid purification or separation > Particulate material type separator, e.g., ion exchange or sand bed > With rehabilitation means > Surface traversing type > Rotating on stationary axis
Description: Apparatus in which the rehabilitation means is rotatable about a stationary axis.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7163630 |
Method and apparatus for enhancing filter bed performance |
Jan. 16, 2007 |
| 7097766 |
Sand filter with rotating vanes |
Aug. 29, 2006 |
| 6890440 |
Method and apparatus for enhancing filter bed performance |
May. 10, 2005 |
| 6802970 |
Fluid treating device |
Oct. 12, 2004 |
| 6280619 |
Inline filter having swivel fitting |
Aug. 28, 2001 |
| 5902488 |
Slow sand filter |
May. 11, 1999 |
| 5061080 |
Rotary agitator |
Oct. 29, 1991 |
| 4828715 |
Cleaning and disposal of carbon black and ash containing wastewaters |
May. 9, 1989 |
| 4655908 |
Device for cleaning liquids in sand filters |
Apr. 7, 1987 |
| 4425144 |
Recovery of carbon black |
Jan. 10, 1984 |
| 4399042 |
Filter devices and methods |
Aug. 16, 1983 |
| 4156647 |
Process and apparatus for removal of impurities from liquids |
May. 29, 1979 |
| 4113183 |
Nozzle for rotary filter pipe |
Sep. 12, 1978 |
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