Abstract: A joint assembly for the end of a prismatic duct comprises a frame including a plurality of elongate L-section profiles each formed unitarily of sheet metal with a pair of legs the first of which parallels a corresponding duct sidewall and forms one of two jaws which define a slot receiving that sidewall, the second leg being hollow and forming an open-ended transverse channel accommodating angularly or curvilinearly profiled sheet-metal arms of associated corner pieces. The channel is bounded by two generally parallel walls either or each of which has an extension forming part of the other jaw of the slot. The free edge of at least the second leg forms a bent-over two-ply stiffening rib which could be engaged by a connecting clip. Barb-like formations on either or both slot-forming jaws and on the sidewall bracketed thereby engage each other to lock the frame onto the duct.

Abstract: This invention relates to a plastic pipe fitting having a connecting portion for attachment to another fitting and a joining portion to be fuse bonded to a length of pipe, whereby successive lengths of plastic pipe may be releasably connected. The connecting portion consists only of plastic suitably reinforced to increase its mechanical strength, primarily the flexural modules above the flexural modulus of the joining portion of the fitting and compatible with the flexural modulus of a mechanical couplings to provide a reliably effective connection between adjoining pipe lengths. The connecting portion of the pipe lengths desirably shaped to conform with the configuration of a conventional coupling commonly used to connect metallic pipe lengths.

Abstract: A clamp assembly for sealing a leaking pipe weld or pipe flange joints. The clamp comprises a collar having hinged-together arcuate segments. The collar is further provided with flanges adapted to be bolted together to connect the hinged segments which may be hinged together to form a pair of semi-circular sections. Each of the segments is provided with a main annular groove on the interior circumference with means on the exterior for filling the groove with a fluid sealant under pressure. A pair of annular border grooves spaced from the main groove are provided on the opposite sides of the main groove. Additional groove means are provided in the end walls of each of the segments which connect the main groove and the border grooves to provide a sealing means between the opposed end walls when butted together.

Abstract: A fitment for mounting on a vessel or tank constructed of reinforcing filaments such as glass or other fibers located in a resin matrix. The fitment includes a platform or top wall which is generally planar and has a pair of generally opposing rectilinear sides. The platform is adapted for supplying a fitting for a hose or nozzle which can be removably attached thereto. Two legs depend from the sides of the platform. A pipe also depends from the central portion of the platform. The ends of the pipe and legs are adapted for securement to the wall of a tank or vessel by bonding resin compatible with the resin of the fitment and the tank. The fitment is preferably constructed of layers of glass fiber reinforcing materials.

Abstract: In one exemplar embodiment, an injection ring is provided that fits tightly between a flange face and a locking nut. The ID of the ring is larger than the OD of a slotted flange stud for creating an annular space about the stud communicating with the slot in the flange stud. The annular space is closed at one end by the lock nut face. The other end of the annular space communicates with the space between the flange stud apertures and the screw teeth of the slotted stud. A radial opening or aperture through the injection ring communicates with the inner periphery of the ring and the annular space for permitting injection of a suitable sealant through the slotted stud into the flange joint.

Abstract: A break-away tank tee fitting for connecting a well water storage tank to the supply or service line. The tank tee fitting has a unique disconnect arrangement for connecting the service line to either a bottom or side inlet tank. This arrangement allows the tank to be removed and replaced without cutting any pipes or wires. The tank tee fitting also provides a unique arrangement designed to easily accommodate in less space the pump switch and pressure gauge normally found in systems where the fitting is used.

Abstract: Apparatus and method are provided for coupling engagement of misalignable flanges disposed around the exterior of first and second tubular ends which may be initially rotatably or pivotally disposed with respect to one another, each of the flanges having at least one passage which is exteriorly conically tapered in a first direction therethrough. In one embodiment, the apparatus provides plug means which are exteriorly conically tapered in the first direction for companion tapered receipt within each of the conically tapered passages, the relative taper of the passage and the plug means preventing the plug means from freely passing through the respective passage. The plug means has a bore which is disposed therethrough with the center line of the bore being eccentrically defined away from the planar axis of the plug means. Means are provided which are companionly receivable through the bore of the plug means for securement with the plug means and for engaging the flanges.

Abstract: This invention relates to flexible hoses having a rubber body and a flange at each end thereof. The rubber body is strengthened by a reinforcement comprising continuous metal elements extending from one flange to the other and whose ohmic resistance from flange to flange needs to be high. The surfaces, of said flanges situated facing the metal elements of the reinforcement are covered with an insulating layer formed from a glass cloth having high mechanical strength and high electrical resistance and from a firm binder of high electrical resistance comprising an epoxy resin, the insulating layer adhering to the metal surfaces of the flanges and to the rubber body of the hose. The layer of glass cloth preferably consists of a plurality of plies which are superimposed and having filaments whose respective axes are at an angle of 45.degree..

Abstract: The present invention discloses method and apparatus for connecting together two members having mating surfaces by means of a plurality of fasteners such that equal compression forces are exerted on the members along force lines normal to a common plane. To accomplish the foregoing objectives, a plurality of pins are carried by one member and pass through bores in the opposite member. The pins are longitudinally extended simultaneously with a common internal extending force and stops are affixed to the ends extending through the second member snugly against the surface thereof. Upon release of the common extending force, all the pins attempt to restore to their original positions with equal restorative forces being equal and opposite to the common extending force applied thereto.

Abstract: A joint assembly for connecting the ends of a pair of generally rectangular sheet metal duct sections includes a pair of frame members secured to each other and connected to the respective duct end portions. The frame members each have four flange portions with an upstanding channel shaped leg and an angularly extending duct receiving leg. Four angular corner pieces extend into the adjacent channel portion of the upstanding legs to form the generally rectangular frame. The end portions of the ducts are positioned in longitudinal openings in the duct receiving leg and are rigidly secured thereto by spot welding or the like. The frame members connected to the ducts are secured to each other by bolts or the like extending through adjacent corner pieces to rigidly connect the ends of adjacent duct sections. The upstanding channel shaped leg of the angle flange portion has an inturned rebent portion that forms a longitudinal pocket between the rebent portion and the lower wall of the duct receiving leg.

Abstract: The outlet of an exhaust manifold for a transversely mounted vehicle engine is coupled by an articulated connection with the inlet of an exhaust header. The articulated connection has portions associated with the manifold and header respectively and includes an annular seal ring with a spherical sealing surface thereon. The sealing surface engages a conical seating surface on the manifold at the urging of a spring between the manifold and header. The seal ring is composed of many metal wires which are packed together to define the annular structure and thus produce a wear resistant, relatively impervious sealing surface having a slight resiliency to permit good sealing conformation against an imperfectly formed geometric seating surface.

Abstract: A sinuous shaped heat exchanger made up of a plurality of generally U-shaped heat exchanger units or sections or banks arranged with one of the ends of each of the U-shaped banks in opposing end to end relationship with one of the ends of a next succeeding bank in such a manner that places the outlet tube sheet of such bank supporting the outlet ends of the tubes of such bank face to face with the inlet tube sheet of the next bank supporting the inlet ends of the tubes of such next succeeding bank. The tubes at the outlet side of the outlet tube sheet and the tubes at the inlet side of the inlet tube sheet protrude toward each other beyond the surfaces of the tube sheets. A removable transition connecting piece in the form of an apertured plate with the same hole diameter and pitch as the tube sheets is sandwiched between the outlet tube sheet and the inlet tube sheet. It is removably secured in that position by securing it to the aforementioned ends of the banks.

Abstract: A sealed connection for two cylindrical members includes semi-cylindrical connector sections sized to fit about the members, to bridge the joint between the members, and to be retained in position. An over-center flexing seal is also provided between two such members, as for example pipe members.

Abstract: A pipe coupling device to relieve stresses within coupled pipe derived as a result of generally transverse motion of the coupled pipes relative to one another. The device sealably couples piping while compensating for generally transverse motion of piping relative to each other without adversely affecting the integrity of the seal.

Abstract: A ring gasket is retained in position on a pipe connector flange with the ring gasket properly positioned for sealing engagement and loading between opposed circular grooves in the flange and a mating flange or member. The ring gasket is supported on one of the connector parts by a spacer ring or by a portion of the flange which effects a standoff between the connector parts when they are connected. The support for the ring gasket includes a flexible connection between the inside of the spacer ring and the outer periphery of the ring gasket. The ring gasket has outer peripheral, oppositely tapered sealing surfaces loaded into sealing engagement with opposing companion surfaces forming the grooves in the flanges upon making up of the connection, and a slidable connection between the spacer ring and the ring gasket supports the ring gasket for such axial movement of the ring gasket as is necessary to enable loading thereof.

Abstract: A ring gasket is retained in position on a pipe connector flange with the ring gasket properly positioned for sealing engagement and loading between opposed circular grooves in the flange and a mating flange or member. The ring gasket is supported on one of the connector parts by a spacer ring or by a portion of the flange which effects a standoff between the connector parts when they are connected. In the case of a separate spacer ring, it is connected to the flange or supported adjacent to the groove by a support member adapted to be hand-held. The support for the ring gasket includes elements frictionally engaging or biting into the outer periphery of the ring gasket. The ring gasket has outer peripheral, oppositely tapered sealing surfaces loaded into sealing engagement with opposing companion surfaces forming the grooves in the flanges upon making up of the connection.

Abstract: A packing sealer plug for use with valve flanges or the like. The packing sealer plug is adapted to be used in tapped openings leading to the interface between the valve flanges or other types of fittings in which packing is to be introduced by a high pressure packing gun. The plug is comprised of an externally threaded end insertable in the opening and an axial passage way leading to an opposite end of the plug which has a threaded opening adapted to receive a nozzle of the packing gun or the like for introduction of the packing. The end of the plug adjacent the threaded opening has a hexagonal square or circular exterior for reception of a wrench for connecting the plug to the flange opening. A cut-off passage way intersects with the axial passage way radially and is threaded to receive a cut-off bolt to seal the plug.

Abstract: Apparatus is disclosed for protecting the end face of an annular blowout preventer or the like from corrosion. In one embodiment, both a ring groove and a circle of tapped stud holes are protected in a low pressure environment by parts on a bell flange to be connected above the annular preventer, and, in another embodiment, the circle of holes is protected in a high pressure environment by the flange of another preventer to be connected above the annular preventer and sealed with respect to the annular preventer by a conventional metal API seal ring.

Abstract: A sealed connection for two cylindrical members includes semi-cylindrical connector sections sized to fit about the members, to bridge the joint between the members, and to be retained in position. An over-center flexing seal is also provided between two such members, as for example pipe members.

Abstract: A sinuous shaped heat exchanger made up of a plurality of generally U-shaped heat exchanger units or sections or banks arranged with one of the ends of each of the U-shaped banks in opposing end to end relationship with one of the ends of a next succeeding bank in such a manner that places the outlet tube sheet of such bank supporting the outlet ends of the tubes of such bank face to face with the inlet tube sheet of the next bank supporting the inlet ends of the tubes of such next succeeding bank. The tubes at the outlet side of the outlet tube sheet and the tubes at the inlet side of the inlet tube sheet protrude toward each other beyond the surfaces of the tube sheets. A removable transition connecting piece in the form of an apertured plate with the same hole diameter and pitch as the tube sheets is sandwiched between the outlet tube sheet and the inlet tube sheet. It is removably secured in that position by securing it to the aforementioned ends of the banks.

Abstract: An elastic pipe connector comprising a bellows body made of rubber or rubber-like synthetic material and having angled-off end beads and reinforcing inserts which extend between the end beads and which comprise thread-like strength carriers, preferably of metal. The reinforcing inserts are angled off at the end of the end beads and with a plurality of directional changes are embedded in the end beads.

Abstract: A self-locating sealing assembly in which a compressible sealing member and an encircling retainer ring make an assembly for sealing non-grooved joints. The sealing assembly has special application to a standard type pipe flange having a relatively projected sealing surface. The sealing assembly has clip type locating means which make a peripheral engagement with the projected sealing surface concentrically to locate the sealing assembly and to hold it located while the joint is being closed.

Abstract: A method for use in connecting flanges of a tubular joint is disclosed. A uniform pressure is applied to the flanges of the joint up to a desired preselected, measurable compression after which the nuts and bolts used to secure the flanges together are made up hand-tight. The preselected compression applied to the flanges is then released.

Abstract: There has been provided a coupler for joining lengths of concentric pipe. A sleeve member receives the pipes in spaced relation therein, with an end of the concentric inner pipe forward of the end of the outer pipe. A forward annular flange portion of said sleeve member is concentric with the pipes and extends radially inward as well as outward of the sleeve member. A rearward face of said flange portion faces the forward end of the outer pipe and is spaced away therefrom by a selected length of said tail portion forming an annular groove bounded by the outer pipe end and inner wall of said tail portion of the selected length and the rear face of the flanged portion. A compressible O-ring type elastomer seal is disposed in the annular groove and extends radially inward of said outer pipe. A gasket is concentrically sleeved between said O-ring seal and outer wall of the inner pipe. In compression, the O-ring seal and gasket form a circumferential seal about the inner pipe.

Abstract: The invention relates to means and methods for rendering fire-safe, or more fire-safe, steel or like pipework which is lined with a plastic or like liner. At joints in such pipework, the liner is brought out over the flange face to form the actual seal. Consequently, the liner is vunerable to fire or other forms of external heat at the joints.In accordance with the present invention, a metal ring is provided around the periphery of the liner at each joint to protect the liner from fire. The metal ring is not intended to provide a complete seal if the seal between the liners should fail, but it does prevent any large escape of the contents of the pipework.The ring may take various forms and may be, for example, a resilient ring of either U-section or M-section. Alternatively, the ring may be of flat-section and may slide on lips formed on inserts arranged between the flanges and the liners.

Abstract: A pipe connector has a pin initially stabbed into a box, the pin and box then being axially loaded together at confronting transverse surfaces while the pin and box are pressurized to expand the box and compress the pin, so that when the pressure is relieved a pressure energized shrink fit is provided and the connector is rendered rigid to enhance tensile, compressive and bending strength and provide a fluid tight joint useful in making up lengths of pipe such as piles and pipelines. Locking screws hold the connector against axial separation to maintain the pin under axial compression and maintain the box under axial tension. The lock screws are threaded into the upper end of the box to fasten the pin to the box or a sleeve or gland nut can be threaded on one of the pins and the box and engage a locking shoulder on the other of the pin and the box.

Abstract: A piping system comprising an inner pipe for carrying fluid and an outer pipe forming a thermal insulation jacket for the inner pipe. The pipe line is formed in sections which are joined together by means of flange members in a manner so as to provide longitudinal compression of the inner pipe such that when the cryogenic fluid is run through the inner pipe and the walls of this pipe contract with the reduction in temperature, minimum stress is placed on the pipe with such contraction, thereby avoiding damage thereto or the formation of leaks therein. Each section is bent to form angulated legs, the bent or elbow portions operating to take most of the precompression. The precompression is achieved in a simple yet highly effective manner by providing a flange on the outer pipe having a circle of fastening means for use in clamping flanges on the ends of the inner pipe sections to each other and to the outer pipe flange, at the same time compressing the inner pipe.

Abstract: An exhaust pipe of a front engine mounted transversely to roll about an axis transverse to the longitudinal axis of the vehicle is joined to a tailpipe by an improved high temperature resistant flexible coupling including a spherically surfaced ring seal supported between a tubular end segment of a first pipe and a free end spherical surface on a second pipe; the second pipe having a flange connected thereto and a pair of bolts are resiliently coupled to the flange fixed on the first pipe to bias the spherical lip against a high temperature lubricant surface on the seal to define a joint with minimal resistance to roll motion so that it readily accommodates substantial angular offset between the first and second pipe segments during high temperature exhaust conditions while maintaining a positively sealed surface at the joint.

Abstract: A circularly shaped rimmed gasket, having an axially aligned central bore ansversely disposed therethrough, utilizes oppositely disposed annular grooves located in exterior faces of the gasket to form sealing surfaces intermediate two axially positioned raised boss sealing faces of a pipe flange. The projecting sides of the rim of the gasket nestles around each flange boss helping to axially align the pipe flanges with minimum effort and visibility.

Abstract: A sealing arrangement between a pipe flange and a screw-on surface for the pipe flange, in which an abutment surface is provided at either the screw-on surface or the pipe flange which extends perpendicularly to the abutment surface of the flat seal in the direction toward the oppositely disposed abutment surface of the pipe flange or screw-on surface, and which is at least approximately tangent to the outer contour of the flat seal at a circumferential place outside of the point of intersection of a line of symmetry with the outer contour of the flat seal; rejection lugs are provided at the outer contour of the flat seal at those places which are disposed opposite the contact places between the abutment surface and the outer contour of the flat seal in relation to the line or lines of symmetry.

Abstract: A wafer valve assembly for securing between two flange fittings, each of the flange fittings having a flow passageway therethrough and comprising an annular flange extending radially from the flow passageway. The valve assembly comprises a valve body having a flowway therethrough and a valve element mounted in the flowway for movement between a first position closing the flowway and a second position opening the flowway. Adapter means are secured to the valve body, and alignment means cooperate between the adapter means and the flanges to place the flow passageways and the flowway in substantial register.

Abstract: An internally threaded mechanical-joint bell fitting for cast iron pipe is adapted to be screwed onto an externally threaded end of a plain pipe section. The fitting has an integral bolting flange circumscribing the mouth of the bell and preferably includes a circumferential water stop flange at the smaller threaded end of the fitting. The fitting also includes mounting pads at the threaded end for attaching a free-standing support structure. The support structure consists of a pair of angle columns bolted at their upper ends to the mounting pads of the bell fitting and bolted at their lower ends to brackets that are adapted in turn to be bolted to studs preset in poured concrete footings for a tank or building wall. The bracket feet are bifurcated so that each bracket can bridge a water stop barrier set into the top surface of the wall fitting.

Abstract: An improved prepared joint is provided on a fitting for mechanically joining it to the end of a metal tube. The fitting has a grooved bore and a bore extending end portion for projecting the bore a predetermined distance beyond its grooved portion so that during radial expansion of the tube into the grooved portion the entire expanded length of the tube is fully supported within the fitting. Such support is effective in extending the useful life of the tube assembly formed by the fitting and tube by alleviating metal fatigue failures due to vibrational bending stresses in the expanded portion of the tube.

Abstract: In one exemplar embodiment, a leak repair clamp for pipe and pipe flanges, valve bonnet flanges and the like is disclosed having a divided clamp frame positionable about the pipe or pipe flange. The divided clamp frame has a pair of spaced parallel channels disposed about its inner periphery. Deformable self-energizing seal members are disposed in each of the channels and having a flexible sealing tip portion radially extending from the inner periphery of the clamp frames. A retaining member is disposed in each of the channels adjacent the seal member for engaging the seal and the channel and retaining the seal member fixed within the channel.

Abstract: Lengths of lay-in ducts, each in the form of an open top trough having exterior connecting flanges at its ends, are connected together in end to end relation in a run by bolts passed through the flanges. Each trough is provided with a cover which terminates a slight distance short of the trough ends. A joint sealing device common to the adjacent end portions of two connected troughs provides a seal between the device itself and the tops of the adjacent end portions of the trough, between the end portions of the covers and their associated troughs, and between the adjacent end portions of the covers themselves. The device extends across the troughs, and has one end hingedly connected to a supporting bracket which, in turn, is clamped fixedly in position on one of the connected trough flanges by one of the connecting bolts connecting the flanges together.

Abstract: To aid in maintaining a fluid flowing through a pipeline at a desired temperature at locations where two pipes are interconnected by a coupling, a jacket is provided which substantially surrounds and encloses the coupling and through which jacket a temperature controlling fluid is circulated in heat-transferring relation to the coupling.

Abstract: A compound sealing gasket is provided for vacuum line connectors which ines a tight seal and reduced galvanic reactions when the connectors consist of dissimilar metals.

Abstract: A fabricated packed pipe coupling gland suitable for a connection where there is at least one brittle pipe, the coupling forming a pressure tight, leak proof coupling which is semi-rigid. The coupling is particularly useful for coupling glass pipe to metal pipe for conveying highly corrosive vapors at high temperature, for example heated titanium tetrachloride vapors to a reactor for forming titanium dioxide.

Abstract: Disclosed herein are coupling means for joining the ends of a pair of pipes, such coupling means including circular flanges associated with the pipes, and defining pluralities of teeth which engage when the flanges are brought together. One of the pipes includes an extended portion which extends into the end of the other pipe with the flanges so positioned, and an annular seal is disposed about the extended portion and within the other pipe. Means are included for releasably securing the flanges together to provide coupling of the pipes.

Abstract: A closure for a heat exchanger of the shell and tube type in which fluid under high pressure is circulated through one or more tubes mounted in the shell. The pressure of the fluid flowing through the shell is lower than the pressure of the fluid in the tubes. The closure includes a single seal member for sealing between the tube sheet and the shell terminal member and between the tube sheet and the closure member and between the terminal member and the closure member. The tubes are bent in a hairpin shape with a separate closure at each end of the tubes. An opening in the end of the shell allows the tube and tube sheet to be inserted into and removed from the interior of the shell.

Abstract: A ring to be interposed between the adjoining ends of two lengths of cylinder barrel of a worm extruder, each length of which comprises an inner cylindrical member and an outer cylindrical member disposed concentrically therewith with a duct for flow of heating and/or cooling fluid provided between the cylindrical members, the ring having an inside diameter corresponding to the inside diameter of the inner cylindrical member end faces, having sealing rings therein, to abut and seal against the end faces of the cylindrical members and a covered in recess in its periphery for connection to a source of heating and/or cooling members, clamping means being provided to pull the outer cylindrical members into abutment with the ring.

Abstract: A bakeable high pressure-vacuum seal is provided in which an inductile sealing element having a butterfly shaped crosssection with protruding sharp edges at each of the four corners, is sandwiched between two ductile sealing elements, the sandwiched assembly then being compressed between the surfaces of the flange elements of a high pressure or high vacuum vessel to coin the ductile sealing element into the surface of the inductile sealing element as well as the surfaces of the flange elements.