Abstract: A connector is described that comprises a connector body with a connector end extending longitudinally from the connector body. The connector end comprises a generally cylindrical outer surface and a generally cylindrical inner surface. The generally cylindrical outer surface has a protrusion (e.g., a bulbous protrusion) providing a thickened cross-sectional area in the region of the connector end proximate to the protrusion so that the connector end can be connected to a second connector by inserting the second connector into the connector end. The second connector can also comprise a bulbous protrusion, and may be a nebulizer. A tube can be connected to the connector body (e.g., using a threaded connector).

Abstract: Provided is a cartridge assembly having first and second cartridges sealed by an interface member having a first sealing member along a radially outer surface thereof having a non-planar geometry around the outer surface and a second sealing member along the radially outer surface having a non-planar geometry around the outer surface. The sealing members may each have a repeating, undulating, non-planar geometry around the outer surface. The cartridges have ends with matching geometries to allow the cartridges to engage in surface-to-surface relation around their entire extents to create with the interface member an air tight seal.

Abstract: A bushing (58) has an entry portion (68) which is secured to a urinal housing (50) and an exit portion (70) which faces a drain pipe (54, 54a, 54b). The entry portion interior surface (74) is fittable about and sealingly grips the urinal exit tube (52). The interiors of the entry and exit portions lie on a common axis (58x) and with the axis (52x) of the urinal exit tube. These axes define a sloped incline and, thus, a built-in, gravitationally-directed downwardly-disposed inclination. Because the axes usually do not fall on the axis (56x) of the conduit, they are angled and offset from the conduit axis. The offset of the bushing raises it above the axis of the conduit. Tubing (60, 60a) is secured at its end (62, 62a) to the bushing exit portion so that the tubing axis at its end (62, 62a) similarly is raised above the conduit axis. The tubing extends from the bushing at an incline that is determined by the built-in incline of the bushing.

Abstract: A method, apparatus, and kit for reinforcing the distal end of a lateral in an irrigation system, typically in which the distal end of the lateral receives a head with a barbed neck. The method includes placing a crimp ring around the lateral, the crimp ring being large enough to encircle a bulge in the lateral created by insertion of the barbed neck into the end of the lateral. The crimp ring is positioned over the bulge and compressed to sheath and reinforce the bulge. The compression imparts a longitudinally convex profile upon the crimp ring, reducing its inner and outer diameters without increasing its length. This compression may cause projections, made of material from the crimp ring, to form on the outer surface of the crimp ring. A kit includes a crimp tool having a crimp die shaped to impart the longitudinally convex shape upon the crimp ring.

Abstract: A venturi adapter is provided and includes a first collar having an inward projection, a second collar having an outward projection and a shoulder defining an aperture extending between opposing axial faces thereof and having an axial projection, the first and second collars extending in opposing axial directions from the shoulder.

Abstract: An improved hose clamp having an annular band having an inner face, tensioning means, and an annular spring liner; the spring liner having a circumferential shoulder near an edge of the liner; and a central, cylindrical, rippled, contact portion of smaller circumference than the shoulder, and of smaller width than the inner face of the band. The shoulder is adapted to abut the inner face and the contact portion is adapted to contact a hose or other article to be clamped. The ripples may be symmetric, for example, sinusoidal, or asymmetric, such as saw-tooth shaped.

Abstract: A gimbal joint includes a gimbal ring, a first fitting pivotally connected to the gimbal ring such that the first fitting pivots about a first axis, and a second fitting pivotally connected to the gimbal ring such that the second fitting pivots about a second axis substantially orthogonal to the first axis. The gimbal ring further includes a separable sealing element having a cylindrical portion with a first rounded end and a second rounded end. The gimbal ring, the first fitting, the second fitting, and the separable sealing element define a fluid pathway.

Abstract: A tool (20) for a pipe fitting arrangement in which a pipe is retainable arranged within a housing (1) by teeth (13) of a grip ring (12) placed within the housing, the tool comprising: first engagement means for engaging the pipe, said first engagement means having at least one part (12) adapted to enter the housing around the pipe in order to force the teeth of the grip ring out of engagement with the pipe, second engagement means for engaging the first engagement means as well as the housing in order to locate the housing relative to the tool, and a handle connected or connectable with the second engagement means. The first engagement means being connected to the second engagement means via at least one first joint being in form of a pivot (24f) and/or at least one first spring means (38) in order to be at least partly displaceable relative to the second engagement means, and a method using such a tool.

Abstract: The permeate collectors of a set of membrane filter elements are connected in line to form a vertical permeate collection pipe serving the set of elements. The connectors between adjacent elements are configured to allow a disconnected element to move perpendicular to the permeate collectors. When an element is disconnected, it may slide horizontally out of the frame. A connector has a spigot that spans between two sockets when connected. In a membrane assembly, each socket is associated with a permeate collector of a membrane filter element. To disconnect the sockets, the spigot is retracted further into one of the sockets until it is spaced apart from the other socket. With the spigot retracted, one membrane element may move relative to the other in a direction perpendicular to the direction of movement of the spigot.

Abstract: This locking ring is adapted to lock a joint between two tubular elements (4, 8). It extends around a central axis (X-X) and comprises segments (50) each having a main part (58) and two circumferential ends (60). Each segment (50) has a shape flaring out from a thin axial side towards a wide axial side. One of the segments (50) comprises a recess (62) for receiving a retaining member (16), which is axially open on the thin side. The receiving recess (62) extends solely through the main part, and it is circumferentially limited on both sides.

Abstract: A coupler apparatus for use with concrete segments has a first duct, a first coupler member connected to the first duct, a second duct, a second coupler member connected to the second duct, and a gasket member received in a channel of the connector of the first coupler member and extending outwardly therefrom. The gasket member is in compressive contact with an abutment surface of the second coupler member. The gasket member has a generally U-shaped cross-section with a curved end extending outwardly of an opening of the channel of the first coupler member. The abutment surface is a planar flanged surface extending radially transversely outwardly of the end of the second coupler member.

Abstract: A coupler apparatus for use with concrete segments has a first duct, a first coupler member having a connector and a flexible boot extending therefrom and having an end extending over a surface of said first duct, a second duct, a second coupler member having a connector and a flexible boot extending therefrom and extending over an exterior surface of the second duct, and a gasket received in the connectors of the first and second coupler members for forming a liquid-tight seal between the first and second ducts. Clamps are affixed over the ends of the flexible boot so as to establish a liquid-tight seal with the respective ducts. The connector includes an annular section affixed to an end of the flexible boot and an annular groove formed around this annular section.

Abstract: A flexible header joint for a high performance automobile is provided, wherein the first end of the joint receives a header collector and the second end of the joint receives an exhaust pipe. A cylindrical clamp maintains the joint in position to the header collector, the clamp having three spring retainers circumferentially positioned around the clamp. When the automobile is in motion, the clamp allows for the header to twist and rotate relative to the exhaust pipe while still maintaining the seal and thus preventing leakage of exhaust.

Abstract: A system for connecting a connector end fitting of a mobile flexible liquid supply pipe, for liquified natural gas, for example, to a fixed tubing located on a support with a different system, such as the manifold of a liquid transporter ship. The system comprises a guide device for guiding the fitting in the fixed tubing, for establishment of a connection, and including a cone mounted on the pipe for engagement with a trumpet on the fixed tubing during connection, with a tractive effort applied by a cable fixed to the cone. The guide device is fixed to the fitting on the flexible pipe and is coaxial to the flexible pipe. The invention is applicable to the connection of a hose to the manifold of a ship.

Abstract: A coiled tubing connector having a body and a plurality of entry or transition sections connected to the body wherein the connector has a low cycle fatigue life of at least 30%, more preferably at least 50% of the coiled tubing. A preferred embodiment contains two shoulders that form an annular void, a plurality of centralizers about an exterior of the body, and/or a plurality of elastomer molds separating the centralizers. The connector is preferably longer than the connectors of the prior art and is a composite of fluoroplastics or aluminum alloys.

Abstract: A first tubular member including a first tubular body having a first pin end and a first bell end opposite the first pin end, a second tubular member with a second tubular body having a second pin end and a second bell end opposite the second pin end, a third tubular member having a third tubular body having at least one third pin end, and a fourth tubular member comprising a fourth tubular body comprising at least one third bell end.

Abstract: A pipe joint between cylindrical male and female couplers having terminal end portions with cooperating cam surfaces that facilitate assembly of the couplers. Cooperating projections on the couplers cam past one another when the couplers are assembled and restrain the couplers against separation. A gasket is interposed between the couplers, and the couplers are articulatable at least several degrees to permit some curvature to a string of pipe. The couplers have splines received in annular sockets in the ends of pipes, and the sockets are filled with adhesive to retain the splines therein. The gasket is prelubricated and protected by a plastic wrap that also provides protection against ultraviolet rays. Cylindrical ring couplers are formed by extruding a strip having a coupler cross-sectional profile, cutting a length of the strip and fusing the ends at a joint.

Abstract: An expansion ring assembly for sealing a gasket with respect to an annular wall of a rigid structure. The expansion ring assembly includes a drive mechanism for engaging and driving apart the opposing ends of an expansion ring to thereby radially expand the ring. The drive mechanism generally includes a pair of block members having threaded bores therethrough, and a bolt having oppositely-threaded ends which are threaded within respective threaded bores of the block members. The bolt additionally includes tool-receiving structure, such as a nut portion, which may be engaged by a suitable tool to rotate the bolt. The block members are respectively engaged with opposite ends of the expansion ring.

Abstract: A device for connecting a pneumatically or hydraulically operated tool to a connection coupling in order to provide the connection to a transport line which guides a liquid or gaseous medium. The device includes a first part (11) with an engaging section (13) which is provided so that it can be inserted into a receiving element on the connection coupling and therefore be detachably connected with the same. The device also has a second part (3) with a connecting section (5), which is configured for being permanently connected to the tool. The two parts (3, 11) each have at least one additional section (9, 17), one of the additional sections (9) radially, externally surrounding the other, at a distance, and an elastic connection (19) being provided between the two additional sections. The connection can be produced by casting, injecting or extruding an elastic, rubber-type material between the two sections.

Abstract: The invention concerns a flexible hydraulic connection comprising a deformable tube (1) and two rigid sleeves (2). The invention is characterised in that the deformable tube (1) comprises a plastic pipe portion (3) with smooth inner wall, made of flexible thermoplastic material or thermoplastic or thermosetting elastomer, and a retaining device, enclosing said flexible pipe portion (3), consisting of a rigid plastic material and formed with a plurality of rings (4) or at least a helical coil.

Abstract: A flexible piping connector 10 includes a flexible elastomeric tubular member 12, with a central annular groove formed around the circumference of the member. Two rigid plastics tubular members 20, 22 engage with the flexible tubular member 12, while inner annular members 28 retain the flexible tubular member 12 in co-operation with the rigid members 20, 22. The rigid members 20, 22 may be connected to sections of piping, while the flexible member 12 allows the assembly to be flexed through a restricted range of angles to allow for construction of piping lengths at non-standard angles, while the connector retains a smooth inner bore.

Abstract: A method for forming a spigot on a double-walled pipe and spigots formed by this method are described. The outer wall and an intermediate space of a double-walled pipe is removed from one end of the pipe over the desired chamfer length, and a preformed annular resilient bevel is placed around the remaining inner wall. This method is convenient, requires limited materials and tools, provides easy access to a porous intermediate space for sealing, and does not introduce residual stress to the spigot. Furthermore, the properties of the spigot depend primarily upon the properties of the annular resilient bevel, increasing the probability of achieving a high quality and robust seal.

Abstract: The expandable band is used to secure a sealing element within a generally cylindrical structure, such as a pipe or manhole, or other round hole. The expandable band includes a band body having a first band end portion and a second band end portion. A plurality of slots are disposed in the first band end portion, and a locking member extends from the second band end portion. The locking member includes a tab for extending through the second band end portion and into one of the plurality of slots to lock the expandable band at the desired diameter. An end section of the second band end portion extends beyond the tab of the locking member to ease the transition between the overlapping first and second band end portions. When the band is expanded, the tab is disengaged from the slots and slides over the slots, allowing the first and second band end portions to move relative to one another. At the desired diameter, the tab engages one of the slots to lock the band at the desired diameter.

Abstract: An expandable band and locking mechanism is used to install and secure a flexible sealing element, such as a rubber seal or gasket, against an internal annular surface, such as in a manhole or pipe. The expandable band is capable of expanding and being locked at various diameters. The expandable band preferably has a plurality of deviations or ribs that provide a plurality of pressure points against the sealing element. The expandable band includes a first locking region, such as an end locking portion of the band, and a second locking region, such as one or more adjustable locking elements or notches in the band. The locking mechanism preferably includes a locking member having a first locking tab for engaging with the end locking portion of the band and a second locking tab for engaging with one of the adjustable locking elements or notches in the band. The locking mechanism further includes a housing for covering the locking member and engaging the band.

Abstract: An integrally molded compression ring for exerting an outwardly, radially directed force on an inner surface of a gasket to compress the gasket into sealing engagement with a wall of an opening. The compression ring is made from a one-piece body or strip of resiliently flexible material that has a substantially continuous and uninterrupted exterior circumferential surface. Lugs formed on an interior portion of the strip cooperate with a force expansion unit to move the ring into an expanded position. A recess may also be provided in one end of the strip for cooperating with the force expansion unit. Projections integrally molded on an interior portion of the strip and on an exterior portion adjacent an end of the strip engage one another to lock the ring in an expanded position. Guiding structure may be formed on the strip that prevent lateral movement of the ends of the strip relative to one another when the strip is formed into a ring.

Abstract: A compression seal for conduits that pass through watertight barriers, such as containment sumps for underground gasoline pumping systems, involving two annular seals of compressible material, a first in the barrier aperture and a second on the conduit, connected by a flexible conical section which provides compliance to both axial and angular movement of the conduit. An inner supporting ring of rigid material is used to force and maintain the first seal in compression sealing relationship, irrespective of roundness variations, within the aperture, and a screw tightened band is used to retain the second seal in a compression sealing relationship about the conduit.

Abstract: A band assembly for effecting a seal particularly adapted for use in establishing a joint between a sewer pipe and a reinforced concrete manhole riser. The seal is affected by a tapered elastomeric tubular connector boot and a clamping band member with an expansion mechanism. Wedge followers are loosely captured in the end sections of the clamping band and lie along a circumferential center line on the band. Driving wedges extend along an axis transverse to the circumferential center line. The wedge followers and wedge drivers both have divergent edge sections that interengage and slide over one another as the driving wedges are pulled together by a clamping mechanism comprising, in a simplest form, a nut and bolt. As the driving wedges move toward the circumferential center line, they displace the wedge followers. The wedge followers engage the end portions of the clamping band and force it and the connector boot into a sealing relationship with the surrounding manhole riser.

Abstract: This invention relates to an in-line and frame independent electric blower half-housing, with cylindrical walls or essentially nonparallel interior walls constructed of an elastomeric material, and which is thereby acoustically silenced and is also easily disassembled for maintenance. The blower half-housing consists of one piece. The blower half-housing was designed for use in the spa industry, as an air blower, but has applications in other industries.

Abstract: Invention is directed to a circular coupling for joining a first tubular member to a second member, where the second member may be a tubular member larger than the first, or a manhole. Specifically, the first end of the coupling is adapted to encircle the first tubular member and a second end thereof is adapted to be received within a complementary opening in the second member. The coupling comprises an elongated open ended tubular joint member formed of a relatively rigid sheet-like member or members, where opposing sheet ends overlap such that the end portions lie contiguous with each other. Within the joint member is a continuous sleeve formed of an elastomeric material contiguous with the inner surface of the tubular joint member and extending from the first end toward and wrapped around the second end.

Abstract: A flexible pipe connector is disclosed for connecting to a hard plastic pipe. The flexible pipe connector, preferably made of polyethylene, has a tubing member which defines a cylindrical wall with inner and outer surfaces, the cylindrical wall having a male end which has a plurality of undercuts formed on the outer surface. The male end with the undercuts is inserted into the female end of a hard plastic pipe with a melting agent applied at the inner surface thereof. The melting agent melts the inner surface of the pipe's female end to form a liquified layer of hard plastic which is received in the male end's undercuts and then hardens into a reconfigured solid layer. In this manner, the flexible pipe connector, which is inert and normally cannot be attached with glue to a hard plastic pipe, can be sealably secured to a hard plastic pipe as the liquified layer solidifies within the undercuts to prevent separation of the pipe connector and the hard plastic pipe and to provide a seal therebetween.

Abstract: A band assembly for effecting a seal particularly adapted for use in establishing a joint between a sewer pipe and a reinforced concrete manhole riser. The seal is affected by a tapered elastomeric tubular connector boot and a clamping band member that expands one end of the boot into the surface of the riser wall. The band assembly comprises a clamping band and a separate toggle expander. The clamping band includes separated end sections that capture the ends of the toggle expander. When the toggle expander is forced into an expanded position, the clamping band forces the connector boot into contact with the manhole riser. The clamping band includes stiffening lips and the toggle expander also incudes stiffening lips to provide a rigid structure. In one embodiment a tab overlies the end sections in the space of the clamping band and the space therebetween to further improve the evenness of the sealing force applied to the connector boot.

Abstract: A sealing gland construction for use in connection with hydraulic unit joints. Receptacles are provided at the joint for enlarged and compressible heads disposed on each end of the sealing gland. One receptacle is located on an inner wall of a female or bell end of one pipe and another receptacle is located on the exterior wall or a male or spigot end of an adjacent pipe. The enlarged heads of the sealing gland extend perimetrally around their associated female and male ends of the pipe and are adhesively secured within the receptacles. By making the compressible heads larger than the dimensions of the receptacle they are maintained under compression both horizontally and vertically. In the assembled joint position, the male end and its receptacle have been inserted into the female end past its receptacle so as to effect a fluid seal which is encased within the walls of said pipes and which remains sealed even in the event of a slight discoupling of the joint.

Abstract: For use in underground sealed liquid distribution systems, embodiments of pipe seals are used to seal between various components used, such as pipes to manholes, pipes to reservoirs, pipes to pipes, repair couplings to pipes, couplings to corrugated pipe and between corrugated pipes, and tee connections to sewer pipes. In each embodiment of a pipe seal, a circumferential seal is initially substantially inserted in a circular receiving volume of a circular positioner. In some embodiments of these pipe seals, each circular positioner has two circular receiving volumes, each one receiving a circumferential seal.

Abstract: A one-piece flexible plastic coupling for connecting a first conduit with a pipe of a second conduit has a central portion in the form of a bellows. The coupling has an end in the form of a cylindrical socket for receiving, an end of the pipe of the second conduit. The cylindrical socket has an inner surface with a diameter greater than an outer diameter of the pipe of the second conduit and an outer surface having a diameter defining a socket wall of predetermined thickness. The socket includes at least one protrusion extending inwardly from the inner surface of the cylindrical socket and extending around the entire circumference thereof.

Abstract: To couple two pipes for hot fluids together, a sealing membrane of temperature and corrosion-resistant material is located transversely within a ring-shaped chamber or space surrounding the end portions of the pipes, the sealing membrane being welded to the adjacent wall portions defining the ring chamber, and the at least one and preferably two sealing and support cushions or pillows being placed adjacent the sealing membrane, to permit limited angular and axial movement of the pipe ends with respect to each other while, effectively, preventing substantial torsional excursion. The membrane may be corrugated or stepped, located transversely to the pipes or at an inclination with respect thereto. Two membranes may be used, inclined towards each other (FIG. 3) and multi-pipe units can be coupled by a single membrane (FIGS. 8, 9).

Abstract: In a flexible joint having a through-bore for the flow of fluid and comprising a pair of annular rigid members relatively rotatable about the longitudinal axis of the flexible joint, an annular elastomeric bearing is interposed between the relatively rotatable annular rigid members to flexibly interconnect the members and transmit load therebetween, and a normally sealed annular chamber is provided between the relatively rotatable annular rigid members and arranged to extend over an otherwise exposed surface of the bearing. Preferably the annular chamber is defined in part by a flexible diaphragm; the flexible diaphragm or the manner in which it is located permits relative rotational movement of the rigid members.

Abstract: A coupling device is provided for rapidly joining fluid-carrying conduits in either straight line or angled alignment. The device utilizes a male portion and a female portion which interengage at mating spherically contoured surfaces. A circular resilient gasket such as an O-ring is embedded in one of the mating surfaces. A rotatable lock ring is disposed upon one of the portions and is adapted to engage interactive locking projections associated with the other portion.

Abstract: A clamping band for clamping a resilient gasket against an opening within a wall to provide a fluid-tight seal therebetween. The clamping band is generally circular-shaped and has an elongated slot extending inwardly from one free end of the clamping band and cooperates with an elongated projection of reduced cross section as compared with the nominal cross section of the clamping band and which is provided at the opposite end of the band. The projection is inserted into the slot, the clamping band is placed against the gasket arranged within the aforesaid opening and the gasket is expanded a predetermined amount by an hydraulic expander to exert the desired clamping pressure upon the resilient gasket. One surface of the projection is provided with a series of teeth. An opening communicating with said slot receives a wedge fitted into said opening and having several teeth along one surface thereof, which teeth conform to the teeth of said projection.

Abstract: A clay or similar pipe has a coupling socket at one end formed by a shrink-fitted plastics sleeve. A sealing ring or band is interposed between the sleeve and the pipe surface. External compression is applied to the plastics sleeve over the sealing member during shrinkage of the sleeve. This compresses the sealing member and ensures reliable sealing without requiring the use of an additional bonding or sealing composition.Alternatively or additionally, a shrink-fitted plastics socket on a claywear or similar pipe end may have a region spaced from the pipe end, provided with a seal ring, and not subjected to shrink-fitting. The seal ring provides a secondary seal.

Abstract: A connecting pipe part of a resilient material for connecting a closet bowl to a drain conduit comprises on one end a female part for receiving an outlet of a closet bowl and on the other end a male part to be received into a drain pipe or conduit, while a sealing sleeve connected with the female part extends within the female part.Said sealing sleeve merges through a discontinuously thinned transition. Into the female part, the thickness of the sleeve being thinner than the thickness of the female part.The transition is preferably located halfway in a plane parallel to the inner wall of the female part, said plane being located midway between the inner side of the female part and the extension of the inner side of the male part.End part support members extend in the direction of the male part.

Abstract: A container housing liquid medication is provided together with a syringe and a coupling member for use in orally administering the medication to a patient. The coupling member is fastened to the container and includes a head member projecting upwardly to receive an inner tip of the syringe barrel. The liquid medication is dispensed from the container into a barrel of the syringe through a bore of the head member when a plunger is moved within the syringe barrel. After a predetermined amount of medication is received by the syringe barrel, the syringe barrel is removed from the head member and the predetermined amount of medication is administered orally to the patient. A cap member attached to the coupling member by means of a strap closes off the bore so that no medication escapes from the container when the syringe is disconnected from the head member.

Abstract: A tap is established in a sewer main by drilling an aperture in the sewer main and locating a rubber cylinder into said aperture wherein the end of said rubber cylinder is provided with toroidal protuberances immediately adjacent the exterior wall and interior wall of the sewer main. The rubber cylinder is thicker in the region between the protuberances, and an interior branch pipe is driven into the rubber cylinder for forcing the cylinder outwardly against the interior edge of the aperture in the sewer main while substantially locking the aforementioned protuberances in position. A branch pipe extension is connected either to the rubber cylinder or to the interior branch pipe.

Abstract: A gasket for a socket-spigot connection between a socket end and a spigot end of two pipes to be connected is made of a material stable as to its shape and adapted to carry at its inner radial side at least one resilient sealing ring and at its outer radial side at least one other sealing ring. The gasket has an outer diameter equal to or slightly less than the inner diameter of the socket and an inner diameter equal to or greater than the outer diameter of the spigot. The gasket has a radial inner ring groove and a radial outer ring groove, the radial inner ring groove being constructed and arranged to receive one of the seal rings to provide a pressure seal engagement between the one seal ring and the outer surface of the spigot, the radial outer ring groove being constructed and arranged to receive another of the seal rings to provide a pressure seal engagement between the other seal ring and the inside surface of the socket.

Abstract: An arrangement for attaching a tank fitting to a plastics fuel tank for motor vehicles. Through an outwardly directed pipe stub in the tank wall the fitting is inserted and fastened to the tank. Between fitting and pipe stub an elastic sleeve is clamped whose inner end by means of an inner clamping means sealingly engages against the fitting, and whose outer end by means of an outer clamping means surrounds the pipe stub. The inner clamping means is part of a stiffening member bearing against the inside of the pipe stub by means of an upper support ring. The outer end of the sleeve is folded over outwardly and pressed sealingly against the pipe stub by means of the outer clamping means and aganist the reinforcing action of the stiffening member. The arrangement enables a simple and sealed attachment of heavy tank fittings, e.g. a fuel pump.

Abstract: A foam extrusion apparatus and method employs an extruder on an upper level extruding foamable extrudate into the upper end of a large elongated barometric leg which extends at a relatively shallow angle into a pool of water at a lower level. A conveyor in the barometric leg extends through a large radius in the pool to guide the extrudate from the pool for further processing. The leg is in the form of an elongated pipeline fabricated from sections and supported on an inclined ramp. Some of the sections are securely anchored to the ramp to resist axial forces when the leg is evacuated. The sections may be reinforced concrete or fabricated reinforced steel of a variety of sectional shapes. Each section is sealed end-to-end so that a vacuum within the leg will draw water from the pool into the leg leaving a vacuum chamber at the upper end of the leg in which the extrudate expands.

Abstract: An underground joint between sewer pipe and reinforced concrete manhole riser is tightly sealed, and resistant to breakage caused by settling or frost heaving by a tapered, elastomeric, tubular connector boot, capable of flexing and yielding under lateral shift. A smooth faced hole is core drilled in the riser wall. The large end of the boot is expanded radially, by an expandable metal band, to a permanently enlarged diameter and internally clamped within the hole which compresses the material of the boot against the hole surface at 1000 psi, or more. The band is expanded and clamped in a direction normal to the central longitudinal axis of the sleeve by hydraulic jack means. The pipe end is inserted in the boot, up to the inside wall of the manhole, but is yieldable in any direction without leakage or breakage.