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 trap for lavatory and other kinds of sinks comprising a capture vessel for rings and other valuables and a hair interceptor is disclosed.

Abstract: A refuse-collecting drainpipe insert is a generally helical coil formed by a strip of rectangular cross section and having a bulge located axially generally centrally of the coil, and frustoconical end portions tapered oppositely from the central bulge of the coil, the strip at one end of the coil being formed as a hook and the strip at the other end of the coil being formed as a return bend.

Abstract: A housing including an inlet conduit and an outlet, carrying a reservoir for collecting filtered liquid. The reservoir is secured within the housing by a lid. A separator assembly is carried by the reservoir and includes a strainer assembly for removing materials from a liquid inflowing from the inlet conduit, an inner container and an outer container. The outer container is covered by a lid having an opening for sealably receiving the inlet conduit. The inner and outer container cooperate to hinder the flow of liquid, giving materials more dense than the fluid time to settle, and materials less dense than the liquid time to rise to and be contained by the lid.

Abstract: A large capacity filter assembly A comprising of a housing B, a filter chamber C, and a horizontal trap chamber D. Water flowing from industrial drain line 10 enters housing B, flows through filter chamber C, ingress horizontal trap chamber D and exits housing B. Horizontal trap chamber D is disposed within housing interior 12 for trapping noxious odors stemming from the drain line and preventing the noxious odors from permeating through housing inlets 16. Horizontal trap chamber D includes horizontal baffle plate 28, first vertical trap channel opening 32, first vertical trap channel 38, first horizontal trap channel 36, second vertical trap channel 44, second horizontal trap channel 42, and airspace 46.

Abstract: An improved structure of an elbow pipe having filter to filter waste material contained in polluted water. The filter is provided within a cup which is screwed tight to the bottom region of the pipe and can be easily unscrewed for the removal of the blocked waste material.

Abstract: A washing machine lint trap attachable to the distal end of a washing machine drain hose. A transparent tube embodies a nylon trap secured to sized members to form a slip fit between the washing machine drain hose and the drain standpipe, the assembly further having a wire loop insertable into the standpipe, the loop being sized to retain the nylon trap between the drain hose and drain standpipe.

Abstract: An improved drain trap assembly which is designed to allow for disposal of sediment with reduced mess and uncleanliness. The improvement comprises a valve which is attached to a drain trap and a compressible container attached subjacent to the valve which collects the sediment. The container when compressed forces residual fluid through the valve such that the valve can be closed to prevent flow of residual fluid back into the container; thereby, the volume of residual fluid in container is reduced prior to removal of container from drain trap. The container is then removed and the sediment is either discharged from the container or the disposable container is discarded. A reduction in discharge of unclean residual fluid into the surrounding area is accomplished by the improvement.

Abstract: A removable drain trap assembly comprised of a clear plastic curved pipe member, a removable bottom closure member attached to the dip portion of the pipe member, and a gridlike member placed vertically within the dip portion of the bottom closure member. The gridlike member is placed along the vertical cross section of the assembly having maximum fluid flux to maximize object capture capacity. The gridlike member conforms to the cross sectional width of the dip portion and the bottom closure member to minimize fluid flow impedance. The bottom closure member is elongated and deepened to facilitate retention of smaller foreign objects which might pass through the gridlike member.

Abstract: A retractable guard for use in combination with a sewage pipe leading from a flush toilet is provided having a plurality of prongs with hooked ends positioned within a cross section of the pipe. The prongs are connected to a piston which is slidable within a cylinder, perpendicular to the pipe. Flushing the toilet causes water to be directed in the cylinder which in turn partially retracts the prongs. Water may be diverted from the cylinder to wash accumulated debris from the prongs.

Abstract: A retractable guard for use in combination with a sewage pipe leading from a flush toilet is provided having a plurality of prongs with hooked ends positioned within a cross section of the pipe. The prongs are connected to a piston which is slidable within a cylinder, perpendicular to the pipe. Flushing the toilet causes water to be directed in the cylinder which in turn partially retracts the prongs. Water may be diverted from the cylinder to wash accumulated debris from the prongs.

Abstract: A filter trap assembly of the type to be used in a sink or other similar plumbing facility and including an elongated vertical pipe section connected at an open end to the drain of a sink and including a closed end defining a liquid reservoir. A filter housing is disposed intermediate said open and closed ends and is structurally adapted to have a filter element removably disposed therein in interruptive relation to liquid flow passing along the length of said vertical pipe section from said open to said closed end in order to trap any solid materials therein.

Abstract: A retractable guard for use in combination with a sewage pipe leading from a flush toilet is provided having a plurality of prongs with hooked ends positioned within a cross section of the pipe. The prongs are connected to a piston which is slidable within a cylinder, perpendicular to the pipe. Flushing the toilet causes water to be directed in the cylinder which in turn partially retracts the prongs. Water may be diverted from the cylinder to wash accumulated debris from the prongs.

Abstract: It has been found that by mounting a suction cover onto the periphery only of a suction interconnection member placed between the suction cover and the recirculating piping, and by carefully placing the hole pattern and size of the individual holes thereon, that a substantial increase in the allowable flow rate gpm for a given safe suction of below five pounds will be produced, as required by the IAPMO standards. Furthermore, it has been found that the suction cover should provide as clear and unobstructed a path to flow, to the internal bore of the suction interconnect member, as possible, and, to this end, the suction cover itself is completely free of any internal flow obstructions, as is the flow path to the internal bore of the suction interconnect.

Abstract: A drainpipe straining device can be attached either through an existing cleanout hole within the drainpipe or can be releasably secured to the drainpipe through a radial hole formed in the pipe. The device includes a plug member having substantially axially extending bristles. The shank of the plug member may be received within the bore of a cleanout hole already provided in a drain structure, or releasably received within a bore formed in a ring adapted to be secured to a radial hole drilled into the drainpipe. The ring member can be secured by strap means to the drainpipe and held in place thereon to releasably receive the plug. Solid materials will be received and collected by the bristles on the drain plug and can be removed from the drainpipe simply by removing and cleaning the plug and associated bristles.

Abstract: A continuous, synthetic plastic plumbing trap comprising a generally U-shaped tubular structure having a first opening comprising an outer threaded annular rim, which is adapted to form a seal with an outer rim surface of a downstream tubular member, and an inner annular rim which is adapted to form a seal with an inner rim surface of a downstream tubular member, the inner and outer annular rims of the trap opening being so situated as to accommodate any tubular downstream member having a rim which fits between the inner surface of the threaded annular rim and the inner annular rim; and a second opening comprising a threaded annular rim, both said threaded annular rims being adapted to engage fastening means of the same size.

Abstract: A drain trap includes a J-shaped pipe section having an opening at one end of the horizontal portion. A removable tray is inserted through the opening and covers the bottom of the horizontal portion on the inside thereof. The tray has sides extending part way up the sides of the horizontal portion. An end cover on the tray is adapted to cover and seal the opening. A U-shaped spring clamp extending across the back of the end cover holds the cover against the pipe section. The tray is provided with three groups of vertically extending fingers which strain material such as food and hair from water flowing through the pipe section. This material can then be disposed of by removal of the tray from the pipe section.

Abstract: This disclosure pertains to strainers adapted to be inserted within drain openings, located in floors, sinks, and tubs, having a handle attachment fitted to a reticulated or foraminated cup-like strainer. The handle may either rotate or retract or both so as to become substantially flush with the surface containing the drain opening. The strainer has a supporting mechanism for resting on the floor or on a recess adjacent the drain opening in the floor.

Abstract: A U-shaped drain trap is described having a modified cylindrical base portion to provide for visual inspection and cleaning. The base portion is adapted for use with a unitary filtering and sealing device which is inserted within, and closes, one end of the cylindrical base.

Abstract: A drain trap pipe with an access port and filtration member including a pipe having a straight portion terminating in a curved portion overlying the straight portion. A tubular extension is connected to and communicating with the pipe substantially at the juncture of said straight portion and said curved portion. The extension portion has formed on the inner surface thereof opposed channel formations into which the edges of a filtration member are inserted. The filtration member extends the length of the extension and the diameter of the pipe with a transparent cap on the outer end of the extension.

Abstract: A wash basin drain filter for entrapping elongated flexible fibers such as hair while permitting the passage of relatively small particulate matter is disclosed herein. The filter has a generally cylindrical body which, after installation, about the shank of a pop-up drain plug has a plurality of spikes protruding outwardly therefrom. The spikes are resilient to permit insertion of the filter into the drain opening and, after insertion, the spikes extend to touch or nearly touch the inside wall of the drain pipe into which the filter has been inserted.

Abstract: A trap for use in connection with sinks, laundry tubs, and the like, with the bottom wall of the dip portion of the trap having an elongated opening, a bottom or closure member detachably secured to the trap for closing the opening, and blocking means secured by said bottom or closure and having means extending into the trap and into the bottom or closure member for blocking the passage of foreign objects and the like without interfering with the flow of the water. The bottom or closure member is readily removable for access to the interior of the trap for cleaning same and the like.