Class 4/404 - Open at bottom

Subclass of Class 4 - Baths, closets, sinks, and spittoons
Definition: Subject matter wherein the valve body has an area on the
No. of patents: 31
Last issue date: 02/28/2012

Number	Title	Issue Date
8122526	Adjustable universal flapper A toilet flush flapper valve includes a flapper and a ballast with a vent hole for enabling air to escape from the ballast, the ballast is rotatably fixed to the flapper for enabling positioning of the vent hole for controlling buoyancy of the ballast in order to co...	02/28/2012
7281279	Drain valve A drain valve, which is assembled on a rotating element of a water tank, is adapted to cooperate with a handle and a link element of the water tank for controlling opening or stopping a drain hole of the water tank. The drain valve includes a fixing base, a cover ab...	10/16/2007
7222375	Tank ball assembly for toilet A tank ball assembly is disclosed to include a cover stopper mounted with a gasket for closing the drain port of the tank of a toilet, a tank ball coupled to an upright short tubular flange of the cover stopper and rotatable on the upright short tubular flange to ad...	05/29/2007
7216373	Toilet tank valve seat structure A toilet tank valve seat structure mainly includes a body and an overflow tube located on one side of the body. The overflow tube consists of an inner tube and an outer tube. The inner tube has a gear rack on one side to couple with a hook located on one end of the ...	05/15/2007
7165505	Integrated accessory for an inflatable apparatus Apparatus including an inflatable enclosure delimited by a flexible wall to which an accessory is secured. The wall has an opening defined by an edge to which a protruding reinforcement is secured; two rigid frames straddle the edge of the opening on each side of th...	01/23/2007
6968573	Convertible ventilated trousers An article of safety clothing is disclosed, and comprises a pair of trousers, of the type including a trunks part adapted to securely receive the lower region of the torso of a wearer in use and having apertures through which the legs of said wearer protrude in use;...	11/29/2005
6651265	Water saving siphon cover of a chamber pot The water saving siphon cover 100 comprises a flexible air chamber 10 and a rigid air housing 20 connected to the lower side of the air chamber 10 to form an air room 30 inside. The air chamber 10 comprises a supporting portion 11, a variable portion 12 h...	11/25/2003
6571401	Flush and tap toilet water saver system A flush and tap toilet water saver system is provided for use in the modem 1.6 gallon toilets that can utilize a flapper valve, a water supply valve which is controlled by a float ball, and a conventional operating handle. A main flapper valve has a bleed...	06/03/2003
6381765	Dual-mode flushing control mechanism for ballfloat toilet A control mechanism for a toilet is constructed to include a valve seat, an overflow tube, and a tank ball assembly pivoted to the overflow tube and adapted to close/open the valve seat. The tank ball assembly includes a holder base pivoted to the overflo...	05/07/2002
6336229	Water saving apparatus for water tank A water saving apparatus for water tank includes a stop valve means located above a water outlet, a linkage bar means located above the stop valve means and two chains for connecting the stop valve means with the linkage bar means. The stop valve means ha...	01/08/2002
6173457	Flapper-type flush valve and mounting adapter A flapper-type toilet flush valve having multiple components. A float member component is assembled to a flapper body component. Both components are made of resilient plastic compounds that resist chlorine and chemical bleaches of the type commonly used i...	01/16/2001
5983412	Toilet tank ball flapper and plastic chain assembly formed as a unitary structures The toilet tank ball flapper and chain assembly is formed as a unitary article of manufacture, with the chain being integrally molded to lie along the perimeter of the base plate of the flapper and being releasably engaged thereto by a plurality of break ...	11/16/1999
5943708	Adjustable tank ball assembly for a two-step flushing control type ballfloat toilet An adjustable tank ball assembly mounted in the water tank of a ballfloat toilet controlled by two trip handles to close/open the water discharging outlet of the valve seat of the water tank of the ballfloat toilet between a full-discharge flushing mode a...	08/31/1999
5819329	Variable control air valve and flush gate flapper A retrofit toilet flush system with an externally mounted variable control air valve that will precisely regulate the amount of water used in each flush cycle. A gallon indicator numbered one through six, in increments of no less than forty indexed portio...	10/13/1998
5794279	Water saver attachment for toilets A water saver attachment for toilets being pivotally connected to selectively cover a drain pipe within a flush tank of the toilets. The water saver attachment includes a hollow L-shaped water weight box having a horizontal section with an open top side a...	08/18/1998
5699563	Float-controlled dual flush valve A dual flush valve that can be operated in a partial flush mode to release only about half of the tank water to the toilet bowl, or in a full flush mode to release almost all of the tank water, is of simple and reliable construction. For a partial flushin...	12/23/1997
5524297	Two-level flush valve The Two-Level Flush Valve retrofits into standard toilet tanks replacing the flush valve and pull cord. Depressing the toilet handle through the usual first resistance lifts a non-buoyant valve (20) open. It is held open by an upper float (28) fastened on...	06/11/1996
5400444	Double flush toilet valve A double flush toilet valve apparatus for permitting full and partial flushes of a toilet water tank by providing a vent hole in the toilet flush valve float which can be opened by an extended additional force actuation of the toilet flush handle to permi...	03/28/1995
5390375	Adjustable toilet tank valve to regulate flush water volume A flapper valve for sealing the discharge outlet in a water tank and for regulating the quantity of water discharged during each flush by reducing the buoyancy of the flapper valve through water inflow into the flapper during flushing. The pivotally mount...	02/21/1995
5353445	Conduit attachment system An assembly for connecting a plumbing conduit to a wall is disclosed. In one aspect there is an outlet formed in a wall of the tank and a resilient seal bearing against an inner surface of the wall around the outlet. The seal has a bore aligned with the o...	10/11/1994
5343572	Pressured toilet tank flush valve A flush valve device is described for use in a toilet that includes a pressured water source, which can drain away water in the event of excess pressure with minimal modification to the toilet and which facilitates initial operation of the flush valve dev...	09/06/1994
5291620	Push button toilet flush mechanism A device for regulating the discharge of water from a storage tank associated with a toilet bowl for flushing of the toilet bowl, with the operation of the device being through slight pressure on a push button on a rod extending through a front or end wal...	03/08/1994
5230103	Short cycle flush valve for commode tanks A commode flush valve for providing short and adjustable flush cycles. The flush valve includes a valve seat around the upper end of a discharge pipe for a tank, and a body pivoted to it. The body has a peripheral valve seal to bear against the valve seat...	07/27/1993
5181282	Semi-flush flapper valve A semi-flush flapper valve apparatus is provided for use in a toilet and consists of a two position operable flush handle on the toilet tank. A main flapper valve has a bleeder valve pivotally mounted thereto. The operating handle is rotated in a first di...	01/26/1993
5157796	Double flush toilet valve A double flush toilet valve apparatus and method for permitting full and partial flushes of a toilet water tank by providing a vent hole in the toilet flush valve float which can be opened by an extended additional force actuation of the toilet flush hand...	10/27/1992
4945578	Toilet flush control device A flush control device for use in a toilet tank of the type containing a standpipe and a flap valve pivotally mounted on the standpipe for closing an outlet in the bottom of the tank includes a cylindrical sleeve for slidable mounting on the standpipe and...	08/07/1990
4937894	Dual flush toilet A valve assembly for selectively allowing either a partial or a complete draining of a toilet flush tank. A hollow valve member having both a small vent hole and a larger opening therein is selectively pivoted in a first or or a second direction depending...	07/03/1990
4872473	Dual float valve control for regular and douglas type valve A reversible buoyant and non-buoyant flush tank valve is adapted for use in various types of flush tanks each having different selective valve operating attachments for moving the valve. The valve for use in one type of tank includes an elongated base wit...	10/10/1989
4841580	Buoyant and non-buoyant valve A flush valve for use in a flush tank for control by the operator of the amount used in flushing, the valve including an elongate body having a solid generally hemispherical protuberance extending outwardly on one side and a hollow frusto-conical cup memb...	06/27/1989
4656677	Water-closet valve Savings in water consumption are obtained and problems with leakage are avoided by using a water-closet valve which is made of flexible air- and water-tight material and has not only a generally frustoconical seat-engaging portion provided with a pair of ...	04/14/1987
3955218	Self-venting tank valve for toilet tanks Disclosed herein is a tank valve for tank-type toilets comprised of a closed upper portion adapted to extend across the opening of a valve seat, and a hollow lower portion extending downwardly from adjacent the upper portion and adapted to extend within t...	05/11/1976

PatentStorm

Bizarre Patents

PatentStorm News

Class 4/404 - Open at bottom