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Class Information
Number: 210/143
Name: Liquid purification or separation > Automatic control
Description: Apparatus having means to sense some condition of a treatment operation and operate a control device.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 4487699 |
Sewage sludge treatment apparatus and process |
Dec. 11, 1984 |
| 4487689 |
System for filtering a liquid |
Dec. 11, 1984 |
| 4482461 |
Backwash control for constant volume-pressure filtration system |
Nov. 13, 1984 |
| 4470911 |
Microcomputer controlled demand/scheduled water softener with variable capacity |
Sep. 11, 1984 |
| 4469602 |
Microcomputer controlled demand/scheduled water softener having automatic resin bed sensing |
Sep. 4, 1984 |
| 4468318 |
Apparatus for the uninterrupted treatment of a liquid with ion exchange resins |
Aug. 28, 1984 |
| 4460461 |
Device for the regulation of a water-removing machine |
Jul. 17, 1984 |
| 4454032 |
Fast filtering apparatus |
Jun. 12, 1984 |
| 4451380 |
Waste disposal |
May. 29, 1984 |
| 4435291 |
Breakpoint chlorination control system |
Mar. 6, 1984 |
| 4432870 |
Sludge removal apparatus |
Feb. 21, 1984 |
| 4427543 |
Automatic tape filter |
Jan. 24, 1984 |
| 4426294 |
Microcomputer controlled demand/scheduled water softener |
Jan. 17, 1984 |
| 4404093 |
Automatic well skimmer |
Sep. 13, 1983 |
| 4400270 |
Ultraviolet apparatus for disinfection and sterilization of fluids |
Aug. 23, 1983 |
| 4385357 |
Water treatment system and control therefor |
May. 24, 1983 |
| 4381240 |
Swimming pool water conditioning system |
Apr. 26, 1983 |
| 4381237 |
Sludge robot |
Apr. 26, 1983 |
| 4347133 |
Electromagnetic ground water conditioning system and sampling device for waste water and fermentation makeup water |
Aug. 31, 1982 |
| 4343710 |
Filter presses and a method of cleaning same |
Aug. 10, 1982 |
| 4341637 |
Removing and collecting oil |
Jul. 27, 1982 |
| 4341633 |
Surface aeration system with controlled aerator submergence |
Jul. 27, 1982 |
| 4340472 |
Water treatment plant |
Jul. 20, 1982 |
| 4336143 |
Controlling the treatment of mixtures comprising solid and liquid |
Jun. 22, 1982 |
| 4336223 |
Ultraviolet method for disinfection and sterilization of fluids |
Jun. 22, 1982 |
| 4335576 |
Wave energy desalinization |
Jun. 22, 1982 |
| 4332680 |
Filter sluicing apparatus |
Jun. 1, 1982 |
| 4329235 |
Apparatus and method for dispensing purifying media mixture |
May. 11, 1982 |
| 4317732 |
Liquid reconditioning system |
Mar. 2, 1982 |
| 4299699 |
Backwashable helical-media coalescer |
Nov. 10, 1981 |
| 4289618 |
Motion control for a filter press |
Sep. 15, 1981 |
| 4285353 |
Filter with automatic cleaning |
Aug. 25, 1981 |
| 4282093 |
Apparatus for detecting coagulation effect |
Aug. 4, 1981 |
| 4275448 |
Electronic means for controlling the regeneration of resins in a resin type ion exchange device |
Jun. 23, 1981 |
| 4252651 |
Negative pressure valving system and transmembrane pressure alarm system |
Feb. 24, 1981 |
| 4246101 |
Water recycling system |
Jan. 20, 1981 |
| 4237538 |
Electronic means for controlling the regeneration of resins in a resin type ion exchange device |
Dec. 2, 1980 |
| 4233157 |
Travelling sheet, flat-bed filter apparatus and system |
Nov. 11, 1980 |
| 4228004 |
Method and apparatus for removal of by-products of chemical vapor deposition from oil for vacuum pump |
Oct. 14, 1980 |
| 4224154 |
Swimming pool chemical control system |
Sep. 23, 1980 |
| 4219413 |
Method and apparatus for treating water |
Aug. 26, 1980 |
| 4211655 |
Upflow filter construction |
Jul. 8, 1980 |
| 4209391 |
Apparatus and method for automatically controlling hemodialysis at a pre-selected ultrafiltration rate |
Jun. 24, 1980 |
| 4204957 |
Artificial kidney |
May. 27, 1980 |
| 4197199 |
Filter presses |
Apr. 8, 1980 |
| 4197200 |
Shipboard blackwater physical/chemical treatment system |
Apr. 8, 1980 |
| 4193872 |
Flushing system for reverse osmosis water purification units |
Mar. 18, 1980 |
| 4170553 |
Process and apparatus for the controlled flocculating or precipitating of foreign substances from a liquid |
Oct. 9, 1979 |
| 4160733 |
Marine engine cooling water filter cleaning system |
Jul. 10, 1979 |
| 4156297 |
Sewage treatment apparatus |
May. 29, 1979 |
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