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Class Information
Number: 210/136
Name: Liquid purification or separation > Flow, fluid pressure or material level, responsive > Check valve
Description: Apparatus having means responsive to a change in a flow line condition acting of the face of a valve disc or plug itself to permit flow in one direction only.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7449106 |
Suction-driven fluid filtration system for recreational or emergency use |
Nov. 11, 2008 |
| 7429325 |
Device for a body fluid bag |
Sep. 30, 2008 |
| 7413649 |
Treatment apparatus with modular chemical containing units having one-way valve assemblies |
Aug. 19, 2008 |
| 7402240 |
Method and system to flush an RO system |
Jul. 22, 2008 |
| 7387210 |
Filter cartridge and manifold for a water purification system |
Jun. 17, 2008 |
| 7384543 |
Circuit for extracorporeal blood treatment and flow-inverting device utilized therein |
Jun. 10, 2008 |
| RE40310 |
Water purification system and method including dispensed volume sensing and control |
May. 13, 2008 |
| 7351344 |
Sterile system and method for filtering biological or medical liquids, especially blood or blood constituents |
Apr. 1, 2008 |
| 7329339 |
Strainer device for fuel tank |
Feb. 12, 2008 |
| 7306715 |
Pump module |
Dec. 11, 2007 |
| 7306736 |
Valve mechanism for infusion fluid systems |
Dec. 11, 2007 |
| 7303666 |
Water filtration system |
Dec. 4, 2007 |
| 7299932 |
Oil filter |
Nov. 27, 2007 |
| 7300590 |
Method and apparatus for separating oil and debris from water run-off |
Nov. 27, 2007 |
| 7285210 |
Zero waste reverse osmosis water filtering |
Oct. 23, 2007 |
| 7258783 |
Fluid delivery system for a water tub using a removeable chemical carrier |
Aug. 21, 2007 |
| 7238280 |
User friendly dispensers |
Jul. 3, 2007 |
| 7232518 |
Filter device |
Jun. 19, 2007 |
| 7232034 |
Oil filter |
Jun. 19, 2007 |
| 7214311 |
Filter cartridge with check valve protection |
May. 8, 2007 |
| 7201153 |
Fuel injection system for an internal combustion engine |
Apr. 10, 2007 |
| 7186282 |
Motor-vehicle air cleaner |
Mar. 6, 2007 |
| 7182858 |
Multiple barrier filter apparatus |
Feb. 27, 2007 |
| 7175761 |
Fluid filter assembly |
Feb. 13, 2007 |
| 7163618 |
Multi-inlet port manifold for a medical waste receiver having an elevated filter element and tethered inlet port caps |
Jan. 16, 2007 |
| 7156995 |
Aeration tank control valve system |
Jan. 2, 2007 |
| 7150825 |
Sealing apparatus of fuel filter |
Dec. 19, 2006 |
| 7147773 |
Refrigerator with treated water |
Dec. 12, 2006 |
| 7138048 |
Apparatus and method for the removal of solids and floatables from a wastewater stream |
Nov. 21, 2006 |
| 7108790 |
Method and apparatus for generating a sterile infusion fluid |
Sep. 19, 2006 |
| 7100683 |
In-well aeration device |
Sep. 5, 2006 |
| 7077951 |
Vessel for heating and filtering water |
Jul. 18, 2006 |
| 7048848 |
Hybrid spin-on filter |
May. 23, 2006 |
| 7029575 |
Filter with a valve combination component |
Apr. 18, 2006 |
| 7014753 |
Salt chlorine generator |
Mar. 21, 2006 |
| 6989092 |
Bailer having built-in filter |
Jan. 24, 2006 |
| 6974539 |
Combination filter element support and anti-prefill valve |
Dec. 13, 2005 |
| 6966981 |
Replaceable filter cartridge with support element and liquid filter with such a filter cartridge |
Nov. 22, 2005 |
| 6942795 |
Modular filter system and method of repairing and/or replacing components thereof |
Sep. 13, 2005 |
| 6939460 |
Portable electric pool cleaner |
Sep. 6, 2005 |
| 6936162 |
Three valve filter element support for filter cartridge |
Aug. 30, 2005 |
| 6916424 |
Method and apparatus for a hemodiafiltration delivery module |
Jul. 12, 2005 |
| 6893555 |
Dual flow filter |
May. 17, 2005 |
| 6887373 |
Water treatment system |
May. 3, 2005 |
| 6884349 |
Oval centerpost and cooperating filter cartridge |
Apr. 26, 2005 |
| 6860998 |
Process and apparatus for preparing extracts and oils from plants and other matter |
Mar. 1, 2005 |
| 6849176 |
Grease separator for kitchen sinks and other applications |
Feb. 1, 2005 |
| 6843913 |
Fuel filter with leak avoidance plug |
Jan. 18, 2005 |
| 6835305 |
Liquid filter, especially an oil filter |
Dec. 28, 2004 |
| 6833066 |
Liquid filter, especially oil filter |
Dec. 21, 2004 |
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