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Class Information
Number: 4/227.6
Name: Baths, closets, sinks, and spittoons > Disinfection > Dispensing to water in flush tank > Water level actuated > Static dispenser (i.e., no moving part) > Having a flush water dosing chamber
Description: Subject matter wherein the dispenser has an enclosed space for the chemical to mix with the flush water received from the flush tank to form a concentrated solution that is to some degree isolated from the water in the flush tank during the quiescent period between flushes and is then discharged during flushing or filling for the purpose of disinfecting, deodorizing, cleaning, or coloring the water.










Sub-classes under this class:

Class Number Class Name Patents
4/227.7 With a siphon 29


Patents under this class:

Patent Number Title Of Patent Date Issued
8032953 Liquid dispensing device Oct. 11, 2011
6948193 Lavatory cleanser dispensing device Sep. 27, 2005
6748610 In-tank dispenser with flexible supported valve head Jun. 15, 2004
6654970 Passive quantitative liquid dispenser Dec. 2, 2003
6119281 Devices for metering fluids in response to level changes Sep. 19, 2000
6101639 Device for dispensing toilet bowl cleaning agent Aug. 15, 2000
6055679 Passive lavatory cleanser dispensing system May. 2, 2000
5038416 Water closet water saving device and dispenser Aug. 13, 1991
4962549 In-tank dispensing device for dosing a toilet bowl Oct. 16, 1990
4937893 Passive-dosing dispenser employing captive internally-generated gas bubble to provide product isolation Jul. 3, 1990
4823410 Dispensers Apr. 25, 1989
4764992 Dispenser having air lock forming means Aug. 23, 1988
4745638 Passive dispenser having delayed discharge May. 24, 1988
4729880 Article for maintaining more even concentrations of bleach in a passive dosing dispenser Mar. 8, 1988
4709423 Toilet tank dispenser Dec. 1, 1987
4668475 Cleaning and disinfecting method and article of manufacture including color display May. 26, 1987
4635302 Toilet bowl cleaner dispenser Jan. 13, 1987
4605534 Cleaning and disinfecting systems including color display means Aug. 12, 1986
4587069 Process for producing color display means May. 6, 1986
4581777 Sealable dispenser and hanger Apr. 15, 1986
4558471 Passive dosing dispenser featuring high strength initial cleaning action Dec. 17, 1985
D280387 Hanging panel for a dispensing package Sep. 3, 1985
4530118 Passive dispenser Jul. 23, 1985
4530120 Methods and apparatus for bathing Jul. 23, 1985
4513459 Bleach cake in an improved bleach resistant particle retaining means Apr. 30, 1985
4507812 Dispenser for a toilet Apr. 2, 1985
4462121 Passageway resistant to capillary transport Jul. 31, 1984
4450594 Tank dispenser with end-of-life indicator May. 29, 1984
4435857 Apparatus for cleansing and disinfecting toilet tanks and bowls Mar. 13, 1984
4435858 Automatic toilet bowl cleaning device Mar. 13, 1984
4432102 Dispensing package for automatically releasing a controlled amount of an additive solution into a water tank and bowl Feb. 21, 1984
4419771 Passive dispenser Dec. 13, 1983
4407779 Dispersion control device Oct. 4, 1983
4375109 Passive dispenser having a double air vent system Mar. 1, 1983
4308625 Article for sanitizing toilets Jan. 5, 1982
4281421 Passive dosing dispenser with improved hypochlorite cake Aug. 4, 1981
4249274 Apparatus for sanitizing toilets Feb. 10, 1981
4244062 Liquid dispenser Jan. 13, 1981
3952339 Automatic toilet cleaning device Apr. 27, 1976
3943582 Holder for additive to flushing water Mar. 16, 1976











 
 
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