Abstract: A stopper assembly for a drain system of a fluid basin includes a stopper head having a seal to sealingly engage the drain system of the fluid basin when the stopper assembly is moved from a drain position to a plug position and a strainer to strain fluid passing through the drain system when the stopper head is in a drain position. The stopper head assembly further includes a stopper body operably coupleable to a control element to move the assembly between the drain position and the plug position. The stopper body may be detachably coupled to the stopper head and/or the strainer to enable selective removal of the stopper head and the strainer from the stopper body when the stopper body is installed for use and coupled to the control element.

Abstract: A drain closure device for a vessel having an interior surface and a drain hole defined in the interior surface. The drain closure device includes a drain plug configured to be telescopically received in the central throughshaft defined in the insert sleeve. The drain plug is moveable between a first contacted ceiling position and a second expanded, drain position. The drain plug includes a seal member that is attached to the first end and a connection member located on a second end. The connection member is configured to releasably engage with at least one lateral shoulder or a suitable lateral projection member associated with the drain opening when the drain plug the use position.

Abstract: A stopper assembly for a drain system of a fluid basin is provided. The stopper head assembly includes a stopper head having a seal to sealingly engage the drain system of the fluid basin when the stopper assembly is moved from a drain position to a plug position and a strainer to strain fluid passing through the drain system when the stopper head is in a drain position. The stopper head assembly further includes a stopper body operably coupleable to a control element to move the assembly between the drain position and the plug position. The stopper body may be detachably coupled to the stopper head and/or the strainer to enable selective removal of the stopper head and the strainer from the stopper body when the stopper body is installed for use and coupled to the control element. Related methods, systems and components are also provided.

Abstract: A removable drain filter apparatus (20) with an housing (22) connectable with upstream and downstream drain pipes (40, 46) has a filtering chamber wider than the drain pipes and divided into an upstream portion (78) and a downstream portion (82) by a generally planer filter element (50). A hatch cover (32) carries a downwardly extending central core (76) with an O-ring seal (84), a filter securement member (86) for pressing the filter element (50) against an underlying support ledge (29) and a drain hole plug (88). The location of the O-ring (84) relative to the filter element (50) and the plug (88) being tapered enables the filter housing (22) to be drained of any water during removal of the hatch cover and before the watertight seal is broken to eliminate leakage of drain water out of the housing (22) when the hatch (31) is completely opened. The filter (50) bends out of the way of a plumber's auger (96).

Abstract: The present invention relates to a drainage apparatus for a sink, in which it is possible to drain wash water rapidly without having residue substances such as foreign substances and the like caught thereon, and prevent leakage of malodor in advance, thereby achieving excellent cleanliness, facilitating an operation and maintenance of the drainage apparatus due to its simple configuration and structure.

Abstract: The sink drain assembly (3-5) comprises a downwardly extending drain sleeve (3) integrally formed on the sink (1); a resilient, generally cylindrical mounting member (5) formed with an upper annular section (7) adapted to releasably engage the drain sleeve (3) and with a lower annular section (13) adapted to releasably receive an upper portion (12) of a garbage disposer (8,9); a clamp (14) removably attachable to the mounting member (5) in overlying relation to the upper (7) and lower (13) annular sections, and a strainer (64) having a radially outwardly extending gasket (63) adapted to establish a generally water tight seal between the strainer (64) and a splashguard (66) mounted on the upper portion (12) of the garbage disposer (8,9).

Abstract: Various embodiments of a device for regulating a fluid flow are described that can include first and second downwardly-sloping valves that are biased in a closed position to prevent odors from escaping the device. The device can also include first and second downwardly-sloping valve seats, and configured such that an end portion of the first valve can be seated beneath the first valve seat and an end portion of the second valve can be seated beneath the second valve seat when the first and second valves are in a closed position, respectively.

Abstract: A drain valve which is used in particular in storage tanks of dishwashers, such as single-chamber or multi-chamber dishwashers. The drain valve comprises a sieve insert accommodated on a support which is of tubular design, and in which a contact switch is arranged to sense the presence of the sieve insert. The support can be moved in the vertical direction with respect to the drain opening in the base of a storage tank by means of an electric drive.

Abstract: A kit for use in treating a sink drain so that drain remains both open and clean includes an unclogging device and a strainer, which though packagable or stackable together would normally be used separately. The unclogging device can be used to concentrate the spray from a nozzle to assist in unclogging a drain. The strainer would normally reside in a sink drain to prevent debris from clogging or restricting the drain. One version of the strainer provides space for an air freshener that can be replaced. These kits also include a sealing stopper and a gasket.

Abstract: In combination a tubular strainer having a wall defining interior and exterior surfaces, and a first flange on the upper end of the wall, a tubular insert having a cylindrical wall sized for reception by the tubular strainer, and a second flange carried by the insert wall, an elastomeric seal having a tubular body fittingly sealingly carried by the insert cylindrical wall, the seal body configured for progressive compressive radial sealing engagement with the strainer wall interior surface when endwise inserted by the insert within said tubular strainer.

Abstract: A pop-up stopper includes a main body having an inside provided with a receiving space and a periphery provided with a plurality of through holes, a control unit removably mounted on a top of the main body and including a top cap and a plurality of connecting members, and a bottom cap removably mounted on a bottom of the main body. Each of the connecting members includes at least one upper elastic plate having a protrusion and at least one lower elastic plate having a protrusion. Thus, the stopper has draining and straining functions to achieve a sanitary effect. In addition, the control unit and the bottom cap can be mounted on and detached from the main body easily and quickly, thereby facilitating a user assembling and disassembling the stopper.

Abstract: A mock shower drain for temporary, in-situ installation within a shower area that is configured to utilize an integrated bonding flange drain, the mock shower drain includes a lower section operable to mate with a drain fitting installed in the shower area, the drain fitting operable to mate with a corresponding lower section of an integrated bonding flange drain. An upper section is sized to fit within a cavity formed in a subfloor of the shower area sized to receive a corresponding section of the integrated bonding flange drain. A cap section is coupled to the upper section, the cap section forming a barrier to resist passage of debris to the drain fitting. An intermediate section intercouples the upper section and the cap section. The mock drain is dimensioned such that an uppermost portion of the mock drain is elevated at least as high as to be substantially flush with the subfloor of the shower area when the lower section of the mock drain is mated with the drain fitting.

Abstract: A bathroom sink popup stopper assembly with an integrated strainer invisible from above the sink while in routine use that catches solids in draining water at its very first stage of downstream to effectively prevent any clogs in the drain passage and beyond. The hidden strainer, sandwiched in between the two parts of the popup stopper body and wrapping around the upper part of the popup stopper body, which is conventionally a one-piece device, that is knocked down into two parts in this invention, an upper body and a lower body that can be repeatedly engaged into and disengaged from each other to secure and release the strainer, is accessible, removable, and re-installable, without the need of any tools, from above the sink before and after cleaning or replacement with a new one if preferred or as needed.

Abstract: Various embodiments of a cartridge for regulating a fluid flow are described that include an upper housing, and an insert that is user-removable from the upper housing. The cartridge can include one or more valves that are biased in a closed position to prevent odors from escaping the cartridge. The cartridge can also include a fluid trap that is at least partially disposed within the cartridge or fluidly coupled thereto. An ultraviolet light can be inserted within the cartridge to disinfect a fluid passageway of the cartridge.

Abstract: A multi stage sink strainer with positive mechanical stops for providing a sink strainer that is superior in function and appearance. Having mechanical stops for easy positive operation and the ability to be removed as an assembly for easy cleaning. Also, having locating features to ease the assembly of the components. Also, having the ability to be appearance customized by the consumer. The inventive device includes a strainer cup, a stopper and a stopper support. The strainer cup provides a fine stage of straining and serves to contain the strained material. The cup includes features that provide mechanical stops for operation. The cup also provides features for removal as an assembly. The cup also includes locating features that ease the assembly of the components. The cup also includes features that allow for the stopper to be held in multiple orientations. The stopper is sized and shaped to cover the fine straining holes 5 with a sealing area while also providing a coarse straining stage.

Abstract: An offset grid drain closure assembly including a drain strainer disposed in the drain hole of a basin, a vertically movable stopper member disposed beneath the strainer and having structure complementary to the opening or openings in the strainer, and a gasket disposed immediately underneath the strainer member and having a matching opening pattern. The stopper is operably connected to an actuation device such that when actuated, the stopper is lowered downwardly from the gasket underneath the strainer or raised to approximate the gasket so as to close the strainer. The drain closure thus provides fluid tight closure of a drain with no elevated surfaces in the bottom of the fluid containing basin, either when closed or when opened.

Abstract: The invention provided a drain plug system in which the top of the drain plug, or stopper is easily detached from the drain plug itself via a connector. The system further comprises a discrete and easily accessible generally tubular debris collector having a plurality of radial projections, where the collector may be placed about the upper stem of the drain plug. The radial projections may be arranged in one of numerous possible arrangements, and each of the projections may extend in one of multiple different lengths, with a maximum determined by the drain pipe size. With the present system, the user may easily access the debris collector and either clean it or replace it with a fresh one, discarding the used one, without needing to remove the drain plug from a basin drain.

Abstract: The sink drain assembly (3-5) comprises a downwardly extending drain sleeve (3) integrally formed on the sink (1); a resilient, generally cylindrical mounting member (5) formed with an upper annular section (7) adapted to releasably engage the drain sleeve (3) and with a lower annular section (13) adapted to releasably receive an upper portion (12) of a garbage disposer (8,9); a clamp (14) removably attachable to the mounting member (5) in overlying relation to the upper (7) and lower (13) annular sections, and a strainer (64) having a radially outwardly extending gasket (63) adapted to establish a generally water tight seal between the strainer (64) and a splashguard (66) mounted on the upper portion (12) of the garbage disposer (8,9).

Abstract: A pop-up stopper includes a main body having an inside provided with a receiving space and a periphery provided with a plurality of through holes, a control unit removably mounted on a top of the main body and including a top cap and a plurality of connecting members, and a bottom cap removably mounted on a bottom of the main body. Each of the connecting members includes at least one upper elastic plate having a protrusion and at least one lower elastic plate having a protrusion. Thus, the stopper has draining and straining functions to achieve a sanitary effect. In addition, the control unit and the bottom cap can be mounted on and detached from the main body easily and quickly, thereby facilitating a user assembling and disassembling the stopper.

Abstract: The invention is a plumbing apparatus adapted with a removable filter container, which minimizes clogging and enables ease of maintenance by implementing a stopper without a guide but with a filtering container coupled to a pivot rod configured to regulate fluid flow. In one embodiment, the plumbing apparatus comprises of a stopper, a flange and filtering container, coupled to a horizontal pivot that regulates drainage of a basin, for example a sink or a bathtub. The plumbing apparatus minimizes clogging by catching the debris in the filter container. Furthermore the plumbing apparatus minimizes costs by enabling ease of replacement and maintenance. The top may be simply removed from a support member, which enables the removal of the filtering container, allowing for simple maintenance or replacement.

Abstract: A method for preventing waste materials from clogging a household drain, the method comprising: a) receiving a quantity of waste material contained in a flow of liquid toward a drain receptacle; b) guiding the flow of liquid to a predetermined position adjacent a part of a manually operable device mounted within the drain receptacle and gathering the quantity of the waste material from the flow of liquid in a first location adjacent a member of the manually operable device located in the drain receptacle; c) maintaining the quantity of waste material generally perpendicular to the vertical motion of a manually moving size reduction assembly; d) manually moving the size reduction assembly portion of the device so as to subject the quantity of waste material to abrading action, thereby producing an abraded portion of waste material as a plurality of smaller pieces; and e) carrying the abraded pieces away from the drain receptacle and through a drain conduit in the flow of water.

Abstract: A sink straining assembly includes a strainer disposed in a drain outlet of a trough and having multiple through holes defined in the strainer. A stopper is selectively inserted into the strainer for closing the strainer and storing water in the trough. The stopper has a disk formed with a periphery abutting against an inner periphery of the strainer. A plurality of partitions is integrally disposed under a lower part of the disk for abutting the bottom of the strainer. A through hole is defined in the disk and a pulling bar extends through the through hole for selectively closing the through hole. The pulling bar has an enlarged head for selectively closing the through hole. A stub vertically extends from the enlarged head through the through hole in the disk. A spring is compressively sleeved on the stub after the stub extending through the through hole in the disk.

Abstract: A floor waste (10) including a filter basket (16) having a magnet (18). The magnet (18) attracts a movable valve member (27) upwardly from a seat (22) to allow liquid to pass through the seat (22). When the basket (15) is removed the movable valve member (27) closes the seat (22). In one embodiment the valve member (27) includes a valve disk 29 that prevents the flow of liquid through the seat (22) when engaged therewith, while in another embodiment the disk (29) has a series of passages (31) that permits the flow of liquid through the seat when the disk (29) is engaged with the seat (22).

Abstract: We provide a sink drain air freshener container that is generally used with sink cover or a sink strainer/stopper. The air freshener container contains a plastic-based air freshener that emits the fragrance for at least 20 days after being unwrapped and placed in use in a sink. The air freshener container has perforations to enable the container to be drained. The strainer/stopper is preferably made of disposable plastic and the container is preferably part of the top portion of the strainer/stopper stem that is used in conjunction with the strainer/stopper perforated basket.

Abstract: A drain system includes a basin and a drain, where a first one of the basin and the drain comprises at least two substantially inflexible protrusions and a second one of the basin and the drain forms at least two apertures. The protrusions and apertures form male-female connections that facilitate positioning and anchoring of the drain in the basin. Further, stoppers/strainer and ball valves for limiting or ceasing water flow through a drain are disclosed. The stoppers/strainers and quarter turn valves may be switch-activated and moved into position by electricity, water pressure, air pressure and the like.

Abstract: A drain stopper adapted for retrofit application to the drain assembly of an existing sink, tub or other water retaining basin. The drain stopper of the present invention comprises an elongate connecting rod having an end cap threadably engaged to one end thereof. Also cooperatively engaged to the connecting rod is a filter basket, one open end of which is enclosed by the threadable engagement of the end cap to the connecting rod. The selective detachment of the end cap from the connecting rod allows the interior of the filter basket to be filled with a suitable deodorizer. The filter basket may optionally be provided with a plurality of projections which are sized and configured to capture hair or other debris passing into a drain opening in which the drain stopper is positioned.

Abstract: The present invention relates to a waste outlet assembly, in particular a waste outlet assembly for a urinal of the type commonly found in men's lavatories. There is described an elongate cylindrical insert having an operatively upper end and an operatively lower end and being insertable into the waste outlet of a urinal bowl or trough, which outlet includes a liquid trap, wherein the insert is radially dimensioned to provide a close fit against the walls of the waste outlet; and wherein the insert is longitudinally dimensioned such that, in use, the lower end extends into liquid in the liquid trap. There is also described a urinal including such an insert.

Abstract: A self-cleaning composite deck drain apparatus which includes a removable top part having a top grating surface for receiving waste liquid and a trap for catching particulate matter from the liquid at a lower end. The drain apparatus further includes a bottom part having a drainpipe within an annular chamber formed thereabout for receiving and holding the top part. Circumferentially spaced locking tabs are affixed to the edge of the top part below the grating surface thereof for reception within tab receivers in the bottom part when the top part is inserted into the chamber of the bottom part and turned for locking of the tabs within the tab receivers. The top part includes a threaded bore within which a valve is manually operable to open and close the drainpipe. The deck drain apparatus is made of composite plastic materials to resist corrosion.

Abstract: The present invention discloses an optimized plug for a sink drainage to solve the inferior plug shaft and plug knob structure. The plug shaft and plug knob has two engaging structures, namely, rotating engagement and vertically sliding structure; the plug includes a plug body, a plug shaft, a plug knob, and a plug cap, wherein the plug shaft has side slot defined a top end, the plug knob has a trans-slot, a longitudinal annual channel, and knob shoulder and a biasing bridge slidable inserted into the side slot; by rotating the plug cap from 10° to 170° angular degree, the biasing bridge is supported by the top edge of the plug shaft for ensuring the plug in a water-flowing position, while from 171° to 11° degree, the plug knob is slide into the plug shaft for sealing the water; by inserting an elastic member into the trans-slot, the elastic member is adapted to extend out for biasing the plug shaft edge.

Abstract: A sink basket and plug assembly comprising a basket portion and a plug portion. The basket portion includes a well having at least one fluid passageway extending therethrough. The plug portion is at least partially receivable within the well and has an open and a closed position. When closed the plug restricts the passage of fluids through the fluid passageway. When open the plug permits the flow of fluid through said fluid passageway. At least one of the basket portion and the plug portion includes an indexing member and the other includes an indexing receiver. The indexing member is releasably receivable within the indexing receiver and retains the plug in its open position. Movement of the plug from its open to its closed position requires the application of a lifting force to the plug to dislodge the indexing member from the indexing receiver.

Abstract: A strainer includes a water collector on an upper side, and a tube coupled on the bottom of the water collector. The tube has flutes formed on the inner wall. An extendable rod is housed in the tube and has lugs on the periphery to slide in the flutes. A latch member is housed in a housing chamber on the bottom of the extendable rod and has coupling sections formed on the bottom in an annular manner. An elastic element has a top end housed in the latch member and a bottom end fastened to a coupling member to couple on the bottom end of the tube. The top end of the extendable rod is fastened to a plug which is insertable in the drain port of the water collector. A filter is located in the water collector and has a button in the center depressible up and down to control water collection or discharge.

Abstract: An assembly for selectively blocking a drain to the passage of water. A drain emanating from a substantially circular opening in a basin, sink or tub is provided with a substantially cylindrical member releasably connected to the basin, sink or tub. The substantially cylindrical member is provided with a fluid inlet for receiving a pressurized fluid and an expandable bladder located within the substantially cylindrical member in fluid communication with the fluid inlet, wherein the bladder is sized and positioned such that when expanded, it blocks the drain to the passage of water. A mechanical pump is provided having a pump chamber and a stem emanating from it such that when the stem is moved, fluid pressure is applied to a hydraulic line connected to the fluid inlet for selectively expanding the bladder.

Abstract: A container having an opening that extends through the container. The outer surface of the container includes a tapered section located within the opening. The tapered section extends from the bottom of the container towards the inner surface of the container. A plug is retained within the opening of the container. The plug has a head, an upright section and a base with a peripheral edge. The peripheral edge of the base contacts the tapered section of the container to enable the plug to remain in an upright drainage position.

Abstract: A filter guard for a pop-up plunger for the drain of a sink or the like which comprises a thin sheet of springy metal having an array of openings therethrough. The sheet is rolled into a cylindrical shape and fitted over the radially extending vanes of a conventional pop-up plunger. The springiness of the sheet causes it to grip the plunger vanes and keep it in place. The openings in the filter guard allow liquid waste to exit the sink but block the passage of discrete articles, such as rings or contact lenses, which may inadvertently fall into the sink.

Abstract: A valve for use in a floor drain to prevent the backflow of fluids from the drain system. The valve includes a valve member and a collar. The first end of the valve member is mounted to the outer surface of the second portion of the collar. In the normal position, the sidewall of the valve member at the second end of the valve member is curled and the valve is in the closed position. When a preset amount of fluid pressure is provided through the collar to the first end of the valve member, the sidewall of the valve member flexes to an open position forming an inner passageway between the ends of the valve member.

Abstract: A combined strainer and stopper device for basins and sinks has a perforated cylindrical housing with an open lower end and a top wall at its upper end. A valve disc is carried by a lower end of an actuator stem reciprocable in the housing for movement into and out of sealing engagement with a seat in a drain opening independently of movement of the perforated housing. In a preferred form of the invention, the top wall is integral with the side wall and is perforate, and a spring is engaged between the top wall and the stem to urge the valve disc in a direction to seat it. The stem extends through the top wall and through a spaced handle on the upper end of the housing, and the spaced relationship of the handle and top wall guides the stem. Outwardly projecting retaining lugs on the stem cooperate with the handle to retain the valve disc in an open position, and an annular shoulder formed on the housing limits the extent of insertion of the housing into a drain opening.

Abstract: A sink stopper assembly includes cup and basket strainers. The cup strainer includes a bottom wall having a positioning hole, and a shoulder portion forming a seat member. The basket strainer is disposed in the cup strainer, and includes a receiving space, a handle extending upwardly from a base wall, a sealing ring to be seated against the seat member, and a retaining stem extending downwardly from the base wall to penetrate the positioning hole. The retaining stem includes a bent metal plate which has two opposite elastic arms, at least one upper protrusion, at least one lower protrusion, and a recess defined between the upper and lower protrusions.

Abstract: A combination flexible strainer and plug for use in conjunction with a drain opening of a plumbing fixture. The strainer comprising a substantially cylindrical portion constructed and arranged to extendingly engage the drain opening. The strainer having a bottom portion engaged to a lowermost portion of the substantially cylindrical portion, the bottom portion having a plurality of openings therethrough. The strainer having an annular ring engaged to an uppermost portion of the substantially cylindrical portion and outwardly extending therefrom, the annular ring constructed and arranged to form a seal with a portion of the plumbing fixture immediately adjacent to the drain opening. The plug comprising an upper surface, the upper surface and a lower surface. The upper surface having at least one projection, the at least one projection providing a grasping surface by which the plug may inserted into and removed from within the substantially cylindrically shaped portion.

Abstract: A safety cover for swimming pool drains for dispersing suction pressure and preventing a person's hair or other body parts from becoming entangled and otherwise preventing injury or death. A generally dome-shaped drain cover is removably affixed to a new and/or existing suction drain using a universal mounting mechanism. The drain cover is preferably circular and includes a peripheral lip, a sidewall, and a segmented dome-shaped top portion. The peripheral lip functions to form a seal with the bottom surface of the pool surrounding the drain, while the sidewall defines a plurality of openings therein and the segmented dome-shaped top portion defines a plurality of segments each of which include a plurality of openings. Each opening incorporates screen mesh material for allowing water to flow therethrough.

Abstract: A lock for holding a drain screen in place on the end of a drainpipe has a bolt passing through the screen and screwed into a lateral bore of a cross brace within the drainpipe. The cross brace has an elongated body with a longitudinal bore having left and right threaded rods for easy insertion and the bolt has a non-standard head to thwart removal thereof.

Abstract: A stop valve device includes a container having an outlet opening, a valve controlled to open and to close the outlet opening of the container. A casing is received in the outlet opening of the container and includes a number of orifices for filtering purposes. A cover is engaged on top of the casing and includes a number of apertures for water flowing purposes. The cover includes one or more outward extending pins engaged in the grooves formed in the container for pivotally securing the cover to the container and for preventing over turning of the cover and the casing.

Abstract: An overflow preventer comprising a plug receivable in a drain hole and provided with a valve movable between a first closed position and a second open position, the valve being resiliently biased to the first position while the pressure on the valve is less than a predetermined value.

Abstract: An overflow preventer comprising a plug receivable in a drain hole and provided with a valve movable between a first closed position and a second open position, the valve being resiliently biased to the first position while the pressure on the valve is less than a predetermined value.

Abstract: A stopper-strainer device (1) having a diaphragm (2) and a closure plate (4). The diaphragm (2) is provided with apertures (6) for passage of fluid. The diaphragm (2) is movable between 2 first and second conditions in which the stopper-strainer device (1) functions as a stopper and a strainer, respectively. In the first condition, the closure plate (4) seals with the diaphragm (2) so that the stopper-strainer device (1) functions as a stopper to prevent fluid flow. In the second condition, the closure plate (4) is spaced from the diaphragm (2) and fluid is able to pass through the apertures (6) so that the stopper-strainer device (1) functions as a strainer to allow fluid flow while restraining material entrained in the fluid that is unable to pass through the apertures (6).

Abstract: A waste outlet has a clamping ring which seats a flared filler tube. The tube directs water into a well in which the water rises and overflows into the bowl of the outlet. The filler tube contains a solids filter disc which is connected to the filler tube. When the cover is removed, the tube and the disc are removable as a pair. The disc cleans the well as it is retracted. The disc drops clear of the tube allowing the disc to be cleaned before re-insertion. A version for spa baths has a screw operated disc for making the outlet function as a plug. A rectangular grooved drainage plate for draining tiles directly through slots in the ring is provided with the waste outlet as a version for shower slabs.

Abstract: The present invention provides a filtered fluid dispensing system. The invention may replace the sprayer provided with the faucet assembly of a conventional sink and may, in certain embodiments, be adapted to selectively dispense filtered and unfiltered fluid.

Abstract: A drain closure is provided for mounting in the drain hole of a vessel such as a bathtub. The closure includes a strainer for mounting within the drain hole. A post extends upwardly from the strainer. A pair of bayonet pins extend outwardly from the post. The drain closure further includes a drain plug having a central aperture in sliding engagement with the post. The plug includes a pair of bayonet slots positioned for slidingly engaging the bayonet pins. An annular plug flange on the plug extends radially outwardly from the plug. An elastomeric seal is positioned beneath the plug flange for sealingly engaging the strainer flange. A cap is positioned on the drain plug over the top of the central aperture. A conical helical spring is positioned between the upper end of the post and the cap and acts to bias the plug upwardly away from the strainer.

Abstract: There is provided a stable drain plug device in which main bodies (the plug lid and the ascending or descending member) are not floated under a pushing operation of the operating part.

Abstract: An improved hidden drain outlet structure for sink includes a drain pipe, a drain head screwed to the drain pipe at an upper end thereof and a filter movably screwed to the drain head. The filter may trap and collect external articles and garbage to prevent the drain pipe from clogging, and may be disassembled easily for repairs. The drain head and filter form a double curve-shaped top surface with a converged valley to facilitate water discharging and form a sturdy and safe construction and has aesthetic appearance.

Abstract: A drainage device (1) for a waste water outlet (12) includes an outer tubular member (102) adapted to fit within the waste water outlet (12). An inner tubular member (103) is located within the outer tubular member (102). The interior of the inner tubular member (103) provides a first outlet and a second outlet is defined by the external wall of the inner tubular member (103) and the internal wall of the outer tubular member (102). A valve member (108, 109) is movably mounted with respect to the inner and outer tubular members (102, 103) for movement between a first position in which the second outlet is obturated and the first outlet is open to permit a liquid to flow therethrough, and a second position in which the second outlet is open to permit liquid to enter the second outlet.