Abstract: A waste outlet fitting for use in tubs, sinks and basins. A magnetic plug is mounted in the waste outlet which can be rotated between open and closed positions through the use of a rotatable magnetic located proximate to the plug. The magnetic is rotatable by use of a remotely located handle employing cable, wire or rods for connecting the handle and magnetic.

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 combined strainer and stopper device for basins, sinks and the like. The device has a perforated cylindrical housing having an open lower end and a perforated top wall. An annular valve seat is formed in the lower end, and a handle is affixed to the top wall. A valve disc is reciprocable in the housing into and out of sealing engagement with the valve seat. An actuator stem is connected at a lower end to the valve disc and extends at its upper end through an opening in the handle. Outwardly projecting retaining lugs are on the stem for cooperation with the handle to retain the valve disc in an open position.

Abstract: An improved floor drain for buildings, basements, exterior paved areas, and the like. The invention provides floor drain assemblies and check valves providing improved drainage performance, particularly where drainage is an irregular occurrence, and having unprecedented simplicity and reliability. Floor drains according to the invention comprise check valves adapted for disposition within floor drains, the check valves generally comprising spring-loaded stops or elastic diaphragms, either of which may be tailored for opening under a selected hydrostatic pressure. Use of the check valves according to the invention permits drainage through the drain conduit while preventing back flow from the drain of undesirable or unwanted gasses. Check valves according to the invention are preferably installable in existing drain structures, and easily removable for maintenance or replacement.

Abstract: Improved outlet boxes are provided for installation in a wall to connect water supply lines and drain lines to the corresponding lines from an appliance. Molded plastic outlet boxes having dual drains; left-to-right reversibility; adaptability to multiple drain and inlet line configurations, including top, bottom and side inlets; inclined bottom walls with gutters and removable webs facilitating drainage; and rear walls with recesses accommodating flushable water supply line connections are disclosed. Dual drain connectors adapted to combine the flows from dual drain outlets into a single drain pipe and knock-outs with downwardly extending, elongated tabs are also disclosed.

Abstract: A waste water strainer has a horizontal flange having a center opening. A hollow barrel is secured to and extends downwardly from the flange and has a center opening concentrically located with respect to the center opening in the flange. A hollow strainer extension is threadably secured to a lower end of the barrel. A sleeve with an internal concave surface is slidably and removably mounted within the upper end of the strainer extension. A circular disk valve having an annular outer surface symmetrical with the concave surface of the sleeve is pivotally mounted on the concave surface of the sleeve. The sleeve is supported at the lower end of the hollow strainer and extends upwardly to engagement with a lower surface of the flange. The flange and the barrel have a chrome-like finished surface, and the strainer extension has a different finish surface.

Abstract: The present invention relates to a touch pop-up stopper for basin drain which comprises a stopper assembly for draining (ON) or stopping (OFF) water which is fitted to the inside of a drain flange, wherein the stopper assembly includes a casing, a lift body, a turning body, a spring, a bottom casing, a cap and a sealing ring, and wherein an engaging member is created by means of the structure of longitudinal notches at the inner rim of the casing and disposed between a first slide way and a second slide way, and wherein the outer rim of the lift body is provided with protruding pieces corresponding to the longitudinal notches, and wherein a plurality of slide pieces fitted with a slant end at the top thereof and corresponding to protruding pieces are provided at the outer rim of the turning body; by means of the sliding and shifting movement of the three above-mentioned components and through an upward resilient force of the spring, the user only requires to give a slight force to the cap at the top of the li

Abstract: Improved outlet boxes are provided for installation in a wall to connect water supply lines and drain lines to the corresponding lines from an appliance. Molded plastic outlet boxes having dual drains; left-to-right reversibility; adaptability to multiple drain and inlet line configurations, including top, bottom and side inlets; inclined bottom walls with gutters and removable webs facilitating drainage; and rear walls with recesses accommodating flushable water supply line connections are disclosed. Dual drain connectors adapted to combine the flows from dual drain outlets into a single drain pipe and knock-outs with downwardly extending, elongated tabs are also disclosed.

Abstract: An improved drain cover assembly for a sink is provided. The assembly includes a generally cylindrical basket having a flat bottom. A sealing plate is attached to the underside of the flat bottom. A plurality of apertures sized to permit the drainage of liquids from the sink, but prevent solid materials from passing therethrough, are located on the bottom of the basket about the sealing plate. An externally threaded member extends from the bottom of the sealing plate. The plug may be cylindrically shaped or frustoconically shaped and is press fit into a drainpipe. The plug has an open upper end and a bottom surface. The bottom surface contains a plurality of apertures to allow for liquid to drain but to prevent solid materials from passing therethrough. The bottom surface of the plug has an internally threaded member extending upwardly therefrom which mates with the threaded member extending from the bottom of the sealing plate.

Abstract: A locking grate for a floor sink includes a screen member having holes dimensioned to allow the passage of liquid but prevent the passage of solid waste and a mounting hole, a threaded member dimensioned to extend through the mounting hole, and a locking member which is adapted to be engaged by the threaded member. According to a presently preferred embodiment, the threaded member is a screw having a non-standard or atypical head which requires a non-standard or unusual screw driver. The locking member includes a tube which is orthogonally engaged by the screw and which has at least one rod slideably disposed therein. The tube and the rod are arranged such that when the screw engages the tube, the screw forces the rod to slide partially out of the tube. The end of the rod which extends out of the tube is preferably provided with a surface which frictionally engages the inner wall of the floor sink drain pipe.

Abstract: A drain stopper for not invoking as much fear in animals as do traditional holed drains when the animals are placed in a sink or tub for bathing. The drain stopper includes an outer housing that has a lower portion and a peripheral sidewall that extends from the lower portion. The outer housing is adapted for insertion in a drain hole. The peripheral sidewall of the outer housing has a plurality of slots extending through it. A lid is coupled to the outer housing. The lid has an upper surface which is textured for helping reduce slipping of skin along the lid. A generally round screen portion is disposed between the lower portion of the outer housing and an inner sidewall of the lid.

Abstract: A drain plug assembly having a strainer removably fitted between a bottom of a drain housing that is to be mounted in the drain of a vessel and a stopper that is mounted to be moved along a central stem between a locked open position permitting flow through the drain housing and strainer and a closed position wherein flow through the drain housing and strainer is blocked.

Abstract: A multi-piece waste and overflow unit is used with a bathtub to remove waste water via the overflow drain hole, bottom drain hole, or both holes of the bathtub. The multi-piece waste and overflow unit includes a bottom connector and overflow connector. Both connectors comprise a tubular member, a flange extending radially outwardly with respect to the tubular member, and a frustoconical connector between and connecting the tubular member and the flange. The flanges have a channel formed thereon to receive leakproof adhesive for connecting the connectors to the bathtub respectively. The multi-piece waste and overflow unit also utilizes elbows, T-joints, and conventional pipes for connecting the bottom and overflow connectors.

Abstract: The drain assembly is constructed with a segmented ball valve of stainless steel or plastic which is rotatable between an open position and a closed position by a shaft extending from the drain body. An annular valve seat is biased against the valve body by a compression device and an annual retainer which is threaded into the valve body from above. A strainer may also be provided to catch large particles which might otherwise not be desirable for passage through the drain assembly. The valve body provides a relatively large opening for the discharge of fluids into a drain pipe.

Abstract: A washbasin drain assembly comprises a drain body which defines a drain passage connecting the interior space of the washbasin to the waste line and a drain plug in cooperative engagement with the drain body for selectively sealing the drain passage. A sieve is fitted removably in the drain body downstream of the plug relative to the direction of flow from the basin to the waste line.

Abstract: A drain stopper having a lift mechanism or assembly and, optionally, a strainer assembly, is provided wherein a sealing member which may be a stopper plug or a flat disc is coupled to an elongate rod having a pair of legs extending in one direction and a handle extending in an opposite direction. The rod extends transversely across a top of the sealing member, and is coupled to the sealing member in a manner so as to permit rotation thereof. When the rod is rotated to urge the legs downwardly along the sides of the sealing member, the legs will engage the drain and, through lever or camming action, lift the sealing member upwardly from the drain. A strainer assembly includes a member extending downwardly from the underside of the sealing member which holds a screen at a lower extent of the extension member.

Abstract: A bathtub drain closure having a strainer element with an internally threaded recess that engages male threads on the lower end of an upwardly extending post. The post has at least one transverse passageway containing a polymeric pin having ends that project slightly beyond the ends of the passageway. A stopper having a centrally disposed, internal bore slides up and down the post between open and closed positions. The central bore of the stopper has a stepped profile having upper and lower portions with an internal diameter slightly greater than the length of the polymeric pin and a middle portion with an internal diameter slightly less than the length of the polymeric pin, thereby causing the pin to be compressed into frictional engagement with the central bore as the stopper slides up and down between the open and closed positions.

Abstract: A safety device for use in a suction outlet assembly of a swimming pool, whirlpool, spa or the like is disclosed. More particularly, the outlet assembly has an opening therein in communication with a pump adapted to create sufficient suction for causing fluid flow through the outlet assembly and a cover mounted over the opening without substantially obstructing fluid flow therethrough. The safety device includes an obstructing mechanism for obstructing the opening when the cover is not properly positioned or affixed to the outlet assembly, whereby fluid flow through the outlet assembly is substantially prevented even if the pump is in operation.

Abstract: A removable drain closure disclosed has a rigid closure body, a flexible sealing member on one face of the support body and flexible legs connected to the sealing member that support the body for flow past the closure in a first position and move inside a drain to a sealed second position. If the closure is inverted the legs also support the support body to allow for drainage through the drain outlet.

Abstract: The present invention relates to a water drop structure which not only functions as a water drop but also prevents pests from intruding indoors, smell from leaking indoors, and sewage back flow when the robe is clogged. It has a main body, main drum, control floating ball, upper partition, and an upper cover. The main body has a positioning flange, main through hole, let-in sheet to form a let-in slot, and a main drum having a lower through hole, union sheet, and upper partition having a spacer with a recess, upper through hole, and its peripheral having union sheet, the upper cover having water drop hole, and the bottom having extension hood with inside diameter smaller than that of upper partition. The main drum and upper partition may be set in the main drum, and an upper cover can be assembled in the upper partition.

Abstract: A sink stopper comprises a perforated strainer basket, a sealing member, an upwardly extending handle, and a downwardly depending locating stem. The locating stem comprises a base portion and two substantially parallel spaced-apart co-operating legs that are substantially rigid yet resiliently deformable towards each other. Each peripheral surface comprises an outwardly and upwardly sloped guide surface disposed at the bottom end portion thereof, an outwardly and downwardly sloped grate-contacting surface disposed at the top end portion thereof, and a grate-receiving notch disposed between the guide surface and the grate-contacting surface. The grate-receiving notch includes an upwardly facing catch surface shaped and dimensioned to catch on the grate in interfering relation therewith. The maximum width of the locating stem at the bottom end of the sloped grate-contacting surface is greater than the diameter of the central guiding aperture in the grate.

Abstract: An improved garbage disposal assembly with an apparatus and related method for selectively varying the sink-side appearance of the garbage disposal assembly. In its preferred embodiment, the apparatus of the present invention includes a decorative flange mask for covering a sink flange of a garbage disposal. A sink flange includes an open cylindrical body portion for insertion through a drainage hole of a sink bottom and an annular lip portion extending radially outward from one end of the cylindrical body portion for location above the sink bottom. The decorative flange mask, in accordance with the preferred embodiment of the present invention, includes an open cylindrical mask body for insertion into the cylindrical body portion of the sink flange and an annular mask lip connected to and extending radially outward from one end of the cylindrical mask body for covering the annular lip portion of the sink flange.

Abstract: A sink strainer for a garbage disposal unit includes a strainer unit, a seat and a mounting flange. The strainer unit includes a handle, a strainer member and a plug member. The plug member has a platform and a surrounding wall depending from the platform on which multiple slope guide are located. The seat includes a limiter located at a lower portion of the seat, a stopping surface protruding from and surrounding a middle portion of the seat, a snapping portion at a top of the seat, and another snapping portion at a bottom of the seat. The mounting flange is provided at a top end with a flange portion and at a bottom end with a mounting portion. The sink strainer may further include a decorative flange having a flange portion and a snapping portion which are dimensioned and configured to abut on, and be engaged with, the flange portion and top snapping portion of the seat.

Abstract: A changeable sink strainer in a drain opening of a sink has a strainer body installed between the sink and a waste pipe. A threaded receiver including a flanged nut is mounted within and at a lower end of the strainer body. A decorative insert is removably disposed within the strainer body. A hollow securing element, e.g. a screw or bolt, removably engages a lower end of the decorative insert within the strainer body and threadably engages the threaded receiver to removably secure the decorative insert to the strainer body. A basket strainer with a depending stem retains the basket strainer within the strainer body. The stem has a retractable element for removably retaining the stem in the hollow securing element.

Abstract: A plunger or scraper for use in moving waste substances, mainly food, into and down a disposal outlet. This outlet can be a type connectable to a waste disposal unit. The plunger also can be use to sit in the drain while the unit is in use, with water running through the plunger, or it can be used as a plug. The plunger comprises a handle, two or more scraper blades, and two collars, the lower of which is slotted. Each collar is fitted with a replaceable washer for sealing the plunger in the drain. The plunger, with the exception of the washers, is integrally formed.

Abstract: A sink strainer having a hollow strainer body with an open upper end with an outlet member at the lower end thereof on which is formed an annular valve seat. A basket strainer is operatively mounted in the strainer body and it is movable between an open and closed position. The basket strainer includes a valve stem which is movable relative to the basket strainer and which carries a valve provided with a detachable peripheral elastomeric seal for seating engagement on the valve seat on the outlet member.

Abstract: An anti-vortex, flush-mounted floor drain for swimming pools consists of a main housing, which is in the form of a hollow cylinder of a first predetermined diameter A drain opening is located in the top of the hollow cylinder; and the edges of the top of the cylinder are mounted flush with the floor of the swimming pool. A downwardly sloped lip extends from the top edge of the main housing and terminates in a circular opening in the top of the main housing. A solid circular cover is centrally mounted in this opening in the main housing, and is movable toward and away from the opening in the main housing to vary the size of the water inlet from the pool between the edge of the circular cover and the edge of the opening in the main housing. A drain pipe is connected to the main housing for withdrawing water from the housing. The large circular cover at the center of the drain prevents a vortex from occuring as a result of the suction of water passing outwardly through the drain pipe in the drain housing.

Abstract: Disclosed is plumbing fixture integrated with the side of a sink and the like having an elongated compartment extending lengthwise along at least a portion of the height of the side wall or piece. The compartment has a bottom with a drain and an open side which allows liquid from a sink to flow into the compartment. A removable strainer is placed in position at the open side of the compartment, and a standpipe is placed in the drain. There is a catch connected to the strainer which is manually movable between a latched position to hold the strainer in position and an unlatched position which allows the strainer to be removed from the open side of the compartment. The standpipe may be removed when the catch is in the latched positioned, but may be locked so that it cannot be removed, yet may still be moved within limits to permit the drain to be opened.

Abstract: A decorative stopper is provided for fitting in the inlet of an existing garbage disposal unit located in a sink drain hole and provided with a sink flange. The stopper comprises a side wall defining a bore and carrying an external sealing member for releasably engaging the inner face of the bore of the existing sink flange, an upper flange extending radially outwardly from an upper end of the side wall for covering the upper face of the existing sink flange, a strainer member extending across the bore and a lower wall extending across the bore below the strainer member and including a plug member moveable between a sealing position and an open position in which fluid may drain through the stopper. A plug operating member extends upwardly from the plug member and through the strainer member to allow the plug member to be lifted to the open position.

Abstract: A stopper assembly for a drain pipe includes a closure member having a stopper at one end and a cylindrical portion configured to fit into the drain pipe. An actuator disposed outside the drain pipe is magnetically coupled to the closure member and may be manipulated to raise and lower the closure member so as to open and close the drain outlet. The magnetic coupling avoids the need for any levers or other mechanical elements to pass through the wall of the drain pipe.

Abstract: The present innovation pertains to a device with which containers, in which water collects in an unintentional manner, are automatically drained. An outer housing (2, 3), which can be inserted into the bottom of the container, is subdivided by a web (8a) into two chambers, one of which is connected to the interior of the container, and the other of which is connected to the surroundings of the container. The web encloses an opening (20) which connects the two chambers when a valve member (14) has moved away from a seat (8b) enclosing the opening. If the valve member rests on the seat, the chambers are separated from one another, and the interior space of the container is not in connection with the surroundings of the container. The movement of the valve member is controlled by the water level in the chamber which is in connection with the interior space of the container.

Abstract: A sink strainer assembly consisting of a body member of upright tubular shape having a lower portion connected to a drain and a larger upper portion joining to the lower portion so as to form a seat. A grid is mounted in the lower portion below the seat and a strainer basket is concentrically disposed within the upper portion. An upright plastic post is secured to said basket and a spring pressed ball member is mounted in the post so that it extends transversely outwardly at a position adjacent the lower end of the post. A resilient stopper secured to the bottom side of the strainer basket is movable into sealing engagement with the seat in a position of said post extending downwardly through said grid opening and with said ball engaging the underside of said grid so as to restrain upward movement of said post, and enable the stopper to be moved upwardly away from the seat by manual lifting of the post so as to cause the ball to be moved against the spring to a release position in the post.

Abstract: A device that can be inserted in an ordianry sink drain and disintegrate trapped debris by rotary motion of a rotor blade. Debris in flowing drainage is trapped in perforations of a receptacle cylinder. The rotor blade which is mounted centrally within a receptacle cylinder is actuated by linear strokes of a steeply pitched threaded rod passing through the threaded bore of the rotor. The upper part of the threaded rod includes a finger grip and a perforated cap piece with a mated and perforated gate cap which may function as an upper strainer obstacle when fitted within the main cylinder of the sink drain. When the cap is closed and moved within the drain main cylinder, it can impart a final compressive force downward.

Abstract: A water conservation device composed of a cup movable relative to an opening for selectively diverting water flow from a main drain pipe to a side tap to conduct water to be conserved to a remote location through a drain pipe.

Abstract: A movable fitting member such as a bathtub drain stopper can be constructed so as to be useful with different drain fittings which differ by having post holders with different sized openings into which a guide post can be threaded. Such a movable fitting member is constructed so as to use a body having a sleeve located around a post holder and having an enlarged cavity around the post holder within the body. The guide post used is double ended; one end is threaded into the post holder in a drain fitting and the other end is located within the cavity. A nut is located on this other end; it is sufficiently large so that it cannot pass through the sleeve. As a result of this the body cannot normally be separated from the guide post during the use of the fitting member.

Abstract: A retrofittable drain insert for existing bell shaped traps and other type drains is provided. The drain insert enables an existing bell trap or pipe drain to be modified and upgraded easily by not only preventing the backflow of sewer gases but also by substantially reducing the backflow of fluid through the drain into the drained area. The drain insert includes a housing with a valve means suspended by an expandable suspension means which easily fits into and can be mounted within the existing drain opening. The valve means has a larger diameter than the housing so as to form a gas tight and fluid tight seal, however, it has a smaller diameter than the existing drain opening so as easily to be retrofittable and fit therein.

Abstract: A foreign matter trap for use in a drain such as a shower or sink drain in which water flows downwardly through a drain pipe, the trap having an element for removably positioning in the drain pipe including a downwardly extending longitudinal member, a plurality of layers of foreign matter catching members extending generally radially from the longitudinal member, each layer being formed of a plurality of spaced apart spicule members, the spicule members of each layer covering less than a complete cross-sectional circumferential area leaving a portion free for the flow of water therepast, the layers being arranged so that the spicule members in adjacent upper layers extend over and above the free cross-sectional areas of the next lower layer so that water may continue to flow through the drain even when the spicule members of any layer are completely closed by trapped foreign matter.

Abstract: A floating drain seal organization is utilized in combination with a drain formed with a conical bottom surface and a coaxially aligned outlet pipe. A float plug with a complementary conical bottom surface is spaced from the bottom surface of the drain to effect passage of drainage water therebetween. The float includes a planar top surface cooperative with an annular tubular seal coaxially spaced exteriorly of a circular matrix of openings. The float includes a hemispherical depression formed coaxially into its top surface to receive a hemispherical bottom portion of a seal coaxially aligned within the drain to effect sealing of the drain when a plugged or a slowed drain condition backs up drainage water therethrough.

Abstract: A conventional pop-up drain plug is movable up and down by an actuator system to open and close the entry opening of a drain pipe. The plug includes a cap at one end to seal the opening, a base engagable by the actuator system, and an intermediate portion comprising a finned guide and a stem. An upwardly open strainer cup having a centrally apertured bottom is forced over the plug base and onto the stem. The cup includes small openings to pass drain water, and its rim is dimensioned to fit close to the drain pipe walls so that the cup will catch small articles passing through the drain pipe entry opening, while yet moving upwardly and downwardly with the drain plug.

Abstract: In a vandal resistant push-pull drain stopper for use with a drain plug of a bathtub or other similar vessel, there is provided a plunger having an inner cylindrical bore, a stem having a reduced portion, an expanded portion and a channeled portion, an O-ring snugly nestled between the stopper and the stem; a cap threadably engaged with the stopper and axially disposed about the upper region of the stem, the cap having a relief inside the hexagonal bore portion thereof so that the stopper freely rotates about the cap by discouraging removal of the cap from the drain stopper; the plunger having a seal radially disposed about the plunger so that when the stopper is in a closed position the seal abuts with the outer periphery of the drain plug thereby sealing the same. The reduced, expanded and channeled portion of the stem permit the drain plug to be open and closed by user and provide tactile "snap in place feel" in the open and close positions while employing only, essentially, two moving parts.

Abstract: A drainage plug to be used in a bathtub, a basin or the like, wherein the plug is provided with a mechanism for opening or closing a plug cap every time a direct contact of a user with the plug cap through a user's foot or hand is performed. A foot or manual depressing action is applied and a depressing of the plug cap opens or closes the plug.

Abstract: The sealing stopper has a lid (1) which is set onto a sealing part (2) with a conical sealing surface (8), leaving an annular space (15). At the bottom side of the lid rim (11) is a protrusion with a hemispheric recess, into which an end segment (4) of a chain (3) is set. In this manner, the latter is directly and tightly fastened to the sealing body and has no protruding parts on its upper side which could interfere with use of the stopper in the drain valve of a bathtub.

Abstract: A two-piece stopper is provided for insertion into the mouth of garbage disposal units. The first piece inserts snugly into the open disposal mouth and has rather large apertures through which water can pass, when the disposal unit is not in use and the sink in which it is mounted is to be used as an ordinary sink. The apertures are large enough to pass small bits of food and waste, but small enough to keep out popsicle sticks, bottlecaps, silverware, and the like. The second piece is a plug which inserts into a cylindrical wall or bore in the first piece to cover the drain apertures of the first piece so that the sink's drain opening is entirely covered and the sink can be filled with water for washing dishes and similar purposes.

Abstract: A drainhole strainer plug comprising a raised central grating member, a concentric recessed trickle-down member, and a plug.

Abstract: A safety device for protecting ones' hands while stuffing waste material into the comminuting chamber of a powered disposer having its comminuting chamber aligned with a drain passage enclosed by a flanged sleeve depending from the sink basin through its drain opening and from which the powered disposed is suspended. An axially elongated plunger body of the safety device extends through the drain passage into the comminuting chamber while supported by its apertured cover plate resting on the flange of the sleeve thereby spacing the lower impaction end from the disposer cutter blades.

Abstract: A gas-sealing insert for floor drains. The insert comprises a cover for sealing a floor drain opening except for a hole passing through the cover, and tubing suspended below the cover for receiving water passing through the hole. The tubing, at one end, sealingly encircles the opening, and has an outlet at its other end. A water trap, e.g. a U-bend, is provided in the tubing between its two ends and a gas-sealing valve is located at the outlet. The valve can be opened by the presence of water passing through the tubing but closes automatically, preferably under the effect of gravity. The insert can be used to replace a conventional drain cover and seals the drain against seepage of noxious gases, such as radon, from the drain system even if the water in the U-bend evaporates when the drain is not used for prolonged periods.

Abstract: A stopper drain guide stem is provided for centering and positioning a stopper in a drain guide hole. The unitary guide stem has a spindle portion extending axially downwardly therefrom for attachment to a drain stopper. The downwardly extending flexible stem portion of the guide element has a radiused nose portion for supporting the drain stopper in its raised, draining position, and for centering the stem and guiding it into a central aperture of the drain body assembly. The intermediate length of the stem portion is bifurcated, having a pair of spaced apart, substantially parallel flexible leg portions with a flexible spacer member extending therebetween intermediate their length, to promote flexibility of the stem, so as to enable its use in a wider range of sizes of guide hole, and to enhance lateral stabilizing frictional engagement of the stem with the inner peripheral surface of the drain guide hole.

Abstract: A drain fitting for bathtubs, sinks or the like has an annular body and a closure member which may be seated against the inlet end of a drain passage through the body. A stem extends from the closure member through a guide element within the drain passage and a spring acts between the stem and guide element to apply sealing pressure to the seated closure member. The closure member may be manually pulled outwardly from the body against the force of the spring and turned angularly to latch the member at an open position when fluid is to be drained. The positive sealing force generated by the spring minimizes or avoids leakage under conditions where the forces of gravity and pressure from overlying liquid may be inadequate for the purpose.

Abstract: A floor drain for hazardous environments comprises a grating, a housing, and an elastic one-way valve clamped by a flange between the grating and the housing. The valve has a tubular body with contacting parallel wall portions which open when a liquid enters the valve. The valve closes when there is no pressure at the inlet. The valve closes more tightly in the event of elevated down stream pressure, positively preventing the escape of gas. An existing, unprotected drain can be retrofitted with the one-way valve.

Abstract: A sink strainer assembly includes a strainer body adapted to fit in the drain opening of a sink having a threaded bore and an annular shoulder in its interior, a strainer basket having a bottom wall formed with a bore, a post formed with a top handle, a bottom threaded portion and a reduced diameter middle portion, and a rubber stopper having a bore of the same diameter as the middle portion of the post. The strainer basket is mounted to the post by inserting the post through the bore in the strainer basket so that its top handle extends atop the bottom wall and the middle section of the post extends beneath the bottom wall. The rubber stopper is then forced over the threaded bottom portion of the post and seats within the middle portion in contact with the underside of the strainer basket to mount the strainer basket to the post.