Abstract: A fluid connector consisting of a longitudinally extending tubular member having a central passageway extending therethrough with the one end of such central passageway being threaded. An annular flange on the intermediate exterior portion divides the tubular member into an upper portion and a lower portion, which lower portion has a thin walled portion that extends from the flange to the one threaded end portion. The upper exterior portion of the tubular member is threaded to facilitate connection to a threaded conduit. The thin walled lower portion is subject to being upset for cooperation with the flange to secure the tubular connector to a fluid line. Such flange is subjected to a bending to complement the exterior contour of the conduit receiving such connector.

Abstract: A weldless and solderless fluid distribution piping system incorporating solely mechanical retention of one or more inlet/outlet fittings in holes in the side wall of a pipe. In each case, the fitting has at one end a fishmouth configuration and an annular bead, and this end end is first inserted into the hole in the pipe and the bead thereafter forcibly expanded into tight mechanical and sealing relationship with the edges of the hole. A deformable and resilient sealing gasket can optionally be interposed between the fitting and pipe to provide an improved seal, if desired. Novel apparati and a method for attaching such fittings to a pipe are also disclosed.

Abstract: The tight connection fitting for a circular orifice in a rigid element is composed of a pipe in flexible material, such as rubber, whose external diameter is slightly greater than the bore of the orifice, and of a truncated cone-shaped bushing whose angle of conicity is less than the angle of friction between the two materials constituting the bushing and the pipe, and whose diameter at the base of the cone is substantially equal to the internal diameter of the pipe.The angle of conicity is, for a bushing in polyamide and a pipe in rubber, at the most 20.degree., and preferably between 2.degree. and 10.degree..The bushing is introduced into the pipe so that the head of the bushing is at a certain distance from the end of the pipe; that end of the pipe is introduced by force into the orifice, and then the bushing is caused to slide inside the pipe until it is blocked in.

Abstract: A coupling including a first hollow section having longitudinal corrugations and a second section having an aperture therein. The coupling is made according to the method including the steps of inserting the first hollow section having longitudinal corrugations into the aperture in the second section so that at least a portion thereof including the corrugations extends into and beyond the aperture, the first hollow section being selected so that its cross-sectional length exceeds the perimeter of the aperture. At least the portion of said first hollow section beyond said aperture is then expanded so as to smooth the corrugations, while avoiding stretching the wall of the first hollow section whereby the exterior size of the hollow section exceeds the entire perimeter of the aperture and the cross-sectional length remains unchanged.

Abstract: In a heat exchanger, separate junction elements (3) are provided for joining the tubes (2) to the tube plate (1), whereby connection sockets (7) of the junction elements (3) reach into expanded ends of the tubes (2) in a friction-fit manner. Flanges (5) of the junction elements (3) are joined in a liquid and gas-tight manner to the tube plate (1). Thus, the production of the separate parts and their assembly is more economical, the characteristics of the tube junctions are improved, and it is possible to use any desired tube shapes and material combinations.

Abstract: A sealed tube block assembly and method of making the same includes a tube block having two opposing walls with an axial bore therethrough. The bore is defined by first and second counterbores respectively in the walls and a reduced diameter serrated bore connecting the counterbores. The serrated bore is axially spaced from one of the counterbores by an axially tapered bore. The tapered bore has a maximum diameter less than the diameter of the adjacent counterbore but greater than the diameter of the serrated bore. An elastomeric seal is positioned in the tapered bore and a washer is positioned in the adjacent counterbore. The tube is formed with a first integral bead that seats in the opposite counterbore, and a second bead that seats in the counterbore which retains the washer and seal. The tube portion that contacts the washer and seal is finished as by swaging to provide an improved seal surface.

Abstract: A fuel delivery rail assembly for supplying fuel to a plurality of fuel injectors in an engine is provided. The assembly comprises an elongated conduit having a rectangular section and a plurality of tubular sockets. The conduit and each socket are tightly combined with a connection utilizing a caulking deformation of an annular extension, which is formed within either the conduit or the socket. A seal member is disposed between the surface of the conduit and the bottom side of each socket.

Abstract: A number of embodiments of sea water hose fixing devices for fixing a conduit within an opening of a marine outboard drive without damaging the hose so as to permit reuse of the hose upon disassembly. The conduit is maintained within the opening by means of a pair of interengaging inner members that interlock with the conduit and interlock the conduit with that member in which it is received without causing damage of the conduit so as to facilitate reuse.

Abstract: A tubular connector consisting of a longitudinally extending tubular member having a central passageway extending therethrough with the one end of such central passageway being threaded. An annular flange on the intermediate exterior portion divides the tubular member into an upper portion and a lower portion, which lower portion has a thin walled portion that extends from the flange to the one threaded end portion. The upper exterior portion of the tubular member has axial spaced barbs that are circumferentially extending to facilitate connection to a hose. The thin walled lower portion is subject to being upset for cooperation with the flange to secure the tubular connector to a thin walled member. The lower exterior portion of the tubular member may also have circumferentially extending barbs to provide connection for a second hose.

Abstract: A service tee comprises a tubular T-piece 1 having a through-portion 2 with a flexible lower end 6 for connection to a gas or water main 70 by way of a hole in the wall of the main and a side branch portion 3 for connection to a service pipe. The end 6 of the through-portion 2 is adapted for initial insertion into the hole in the wall of the main 70 and then for subsequent radial outward expansion so that its surface sealingly engages with the edge of the hole. An expander 4 is provided for location within the end 6 of the through-portion 2 and is adapted in a first position to permit initial insertion of the end of the through-portion into the hole and on movement to a second position to cause expansion of the end 6 into engagement with the edge of the hole.

Abstract: This invention relates to an adaptor for connecting a non-metallic pipe to a threaded metallic element, such as a sprinkler head, in leak-tight fluid communication. The adapter comprises a plastic coupling unit which is adhesively secured at one end to plastic pipe and adapted at the other end thereof to receive a threaded metal insert which may be threadably connected to a metal element, such as a sprinkler head. The adapter of the invention is particularly suitable for use in high pressure fire extinguishing systems.

Abstract: A soldering structure of a tubular material for soldering one end portion of a tubular material to an auxiliary plate with a soldering material coated thereto, wherein the plane auxiliary plate is formed therein with a communicating hole for allowing the tubular material to be inserted therein, one end portion of the tubular material is inserted into the communicating hole and temporarily secured to the auxiliary plate through a deformation of the auxiliary plate at the end portion of the tubular material or the peripheral area of the communicating hole before soldering, thereby to close one end of a space between the peripheral surface of the tubular material and the inner wall of the communicating hole, the space allowing the soldering material melted to be pooled therein during soldering, and the tubular material and auxiliary plate being soldered when the melted soldering material pooled in the space is hardened.

Abstract: An improved fixing arrangement includes a planar flange having a mounting hole formed through an axial portion thereof, a radially expanded portion being formed in a portion of the peripheral surface of the mounting hole for receiving an annular resilient sealing member; and a pipe having one end provided with an pipe-diameter portion and a radially expanding annular portion. The radially expanding annular portion is engaged with the peripheral edge of the mounting hole which is formed on the back side of the flange to insert the pipe-diameter portion into the mounting hole. In addition, within the mounting hole, the end of the pipe-diameter portion is enlarged or a part of the pipe-diameter portion is radially expanded to press the resilient sealing member and to clamp the radially inwardly projecting peripheral edge of the mounting hole between the radially expanded portion and the enlarged end or radially expanded end portion, thereby fixedly connecting the flange and the pipe.

Abstract: A pressure tank connector apparatus is described, including a fitting body having an integral hollow sleeve portion projecting from one end thereof adapted to extend into an opening in the tank wall and be crimped about an internal flange or lip portion of the tank wall surrounding such opening with a sealing ring of elastomer compressed between a gripping flange portion of the fitting and the tank. As a result, the crimped tank attachment is positioned within the tank so it is protected from vandalism or damage from other causes. The pressure tank connector is coupled by an improved coupling to a flexible conduit such as a hose for supplying compressed air or other gas from the tank to an external device, such as the air brakes of a truck or other vehicle.

Abstract: An air to air heat exchanger particularly for contaminated air from an animal barn or the like includes a core formed by a plurality of thin-walled flexible plastics tubes supported at respective ends in tube sheets. The tubes are held under tension and arranged vertically in parallel rows and columns so that cold fresh air enters parallel to the rows horizontally beneath the upper tube sheet and then moved downwardly along the outside of the tubes to escape horizontally parallel to the rows above the lower tube sheet. The contaminated warm air passes from a plenum beneath the lower tube sheet upwardly along the inside of the tubes to an outlet at the top of the tubes. This direction of movement of the air causes a self-cleaning effect by condensate at the top of the tubes running down and cleaning the interior of the tubes of any collected contaminants. The design also enables the use of convenient inexpensive flexible tubes without allowing air movement to cause unacceptable flexing.

Abstract: In a plate heat exchanger having a frame plate and a pressure plate, at least one of these plates has holes for flow of the heat exchanging media to and from respective passages in the pack of heat exchange plates. Each of these holes has a lining of corrosion-resistant metal comprising a hollow cylinder with thin flanges at its opposite ends engaging opposite sides of the frame plate or pressure plate. One of these flanges has a seamless connection with the hollow cylinder and is sealingly compressed between a heat exchange plate and an undepressed surface of the inner side of the adjacent frame plate or pressure plate. Lining of the hole is effected by plastically deforming a metal disc into a hollow cylinder with a flange at one end, inserting the other end of the cylinder through the hole to engage the flange with said undepressed surface, and then providing said other end of the cylinder with a flange engaging an undepressed surface of the outer side of the frame or pressure plate.

Abstract: In a reconstitutable fuel assembly, a top nozzle attaching structure for mounting the top nozzle adapter plate in releasable locking engagement upon the guide thimble upper end portions includes several improved features. First, each locking tube is mounted within the guide thimble upper end portion for movement between an upper locking position wherein the adapter plate and guide thimble upper end portion are maintained in locking engagement and a lower unlocking position wherein the adapter plate is releasable from the guide thimble upper end portion. Also, cooperating means are defined on the locking tube and the guide thimble for retaining the locking tube at either of its upper or lower positions. The guide thimble cooperating means includes a pair of upper and lower circumferential bulges defined on the guide thimble upper end portion below the adapter plate.

Abstract: There is disclosed a nozzle liner and a method for its installation for the protection of nozzles of vessels. The nozzle liner comprises a sleeve fitting the internal diameter of the nozzle and having an integral end flange. The nozzle liner is inserted into the nozzle with its integral end flange bearing against the outer face of the ring flange of the nozzle. The nozzle liner is rotationally molded with an end flange and is free of internal stresses and seams. The preferred method of its installation simultaneously flares and bonds the nozzle liner to the lining of the vessel in a fashion which confines the stressed portions of the nozzle liner in the annular lamination area. In this position, the end of the nozzle liner projects inside the vessel and the projecting end is thermoformed to flare it outwardly and form an annular seal laminated against the inner corrosion liner of the vessel. For this purpose a heated flaring and laminating tool is employed.

Abstract: A swaging apparatus includes a drawbar to be inserted in a tubular structure that is to be expanded radially. Two confinement structures define the axial boundaries of an annular pressure zone within which one or more elastically deformable pressurization rings are confined. One or both of these structures includes a plurality of arcuate segments elastically held together and presenting a cam surface. A cam ring interacts with that cam surface to radially expand a cylinder formed by the segments in response to swaging pressure, thereby preventing inelastic deformation of the pressurization rings.

Abstract: A repair assembly for broken or leaking risers in underground irrigation systems is provided. The repair assembly is adapted to be inserted into a hole through the wall of a buried water distribution line and is held in place by locking tangs engaging the interior surface of the distribution line and by a locking ring flange disposed about the exterior of the assembly and bearing on the exterior wall of the distribution line.

Abstract: A plate assembly is secured to a heat exchanger unit for a hot air furnace at each of one or more apertures in the unit by expanding a flange extending around an aperture on the plate within the aperture in the unit to cause such flange to conform to the exact shape of the aperture in the unit and form a leak-proof joint between the heat exchanger unit and plate assembly.

Abstract: A method for installing a close-fitting cylindrical metal sleeve (26) within a tube (14) secured to a tube sheet (12) of a steam generator, comprising the following steps. First, the sleeve is inserted into the tube until an upper portion (28) of the sleeve is above the tube sheet while the lowr portion (30) of the sleeve is within the tube sheet. Next, the upper portion of the sleeve is radially deformed against the adjacent tube wall to form substantially coextensive permanent bulges (32,34) around the circumferences of the sleeve and the tube. The sleeve is then displaced axially, or longitudinally, relative to the tube, such that the bulge in the sleeve produces a wedge-like mechanical interference seal (40) against the tube wall (16'). Finally, the lower portion (30,38) of the sleeve is joined and sealed (42) against the adjacent tube wall (16') to permanently maintain the tight mechanical interference seal at the upper portion of the sleeve.

Abstract: The heat exchanger (10), e.g. a motor vehicle radiator, has a bundle of thin-walled metal tubes (12) passing through a perforated plate or collector (18) via holes (23) therethrough. The collector plate is made with holes having walls that are highly elastic, either by the collector being molded from a highly elastic plastic, or by the collector plate being made from a sheet of metal with the holes being formed with spring shaped rims. The elasticity is used to grip and seal the tubes (12) in the holes (23) through the collector plate, and the relative strengths of the tubes and the plate are such that the portions (38, 61, 92) of the tubes thus elastically gripped in said holes are contracted by the elastic grip and are flanked on either side by non-contracted portions (42, 41; 66, 74; 93, 94) of tube which ensure that the tubes are held fast against longitudinal movement in either direction relative to the collector plate.

Abstract: A method for fixing a tube by expansion improve the seal between a tube and a support plate which are joined by expansion fixing. The method comprises forming fine annular projections on the surface of a bore which is formed in the support plates, and inserting a tube within the bore so that upon expanding the tube within the bore, the projections engage the tube to produce a seal.

Abstract: A flexible tubular assembly having an outer tube and located therein an inner tube. One end of the inner tube is in communication with the locale of the nasal passages of a patient. The other end of the inner tube is provided with the safety connector at an end portion of the outer tube externally with respect to the outside of the connector through a wall thereof. The external connection includes a tubular nipple that is at an angle with respect to the connector and is the safety connector feature of the present invention.

Abstract: A method of connecting a tube (12) to a flange (120) is disclosed including placing the tube between first and second portions (14,16) of a holding apparatus (10), closing the portions and gripping the tube securely between the portions by operation of a first powered actuator (24), positioning a force-transmitting apparatus (20) including a punch (22) into axial alignment with the tube and flange, and forcing the punch axially into the tube and expanding the tube radially outwardly into interlocking engagement with the flange by operation of a second powered actuator (26) of the force-transmitting apparatus. The portions (14,16) are preferably pivotally closed to securely grip the tube, and the force-transmitting apparatus (20) is preferably an intergrated part of a computer controlled industrial robot (32).

Abstract: A tube-to-plate connection and method for making it utilize a plate defining an aperture where the tube is to be attached to the plate, with the portion of the plate surrounding the aperture including a flange extending away from the plane of the plate. The tube side wall lies generally within the flange. The flange and tube wall are simultaneously cut or staked radially by a piercing cutter-staker which pierces the walls of both flange and tube wall to prevent axial movement or rotation of the tube with respect to the flange.

Abstract: A solderless type heat exchanger having an upper and lower tanks, header plates closing the opposing opened ends of respective tanks, a plurality of tubes extending through the head plates to provide a communication between the upper and lower tanks, and a plurality of plate fins attached to the outside of the tubes, the tubes being joined to the header plates and plate fins solely by pressure contact therebetween provided through expansion of the tubes. The header plate is provided with a collared portion around each bore for receiving the corresponding tube and an annular groove is formed around the periphery of each collared portion. The annular groove provides a resiliency which ensures the rigid and stable joint between the tubes and the header plate achieved solely by the pressure contact through the expansion of the tube.

Abstract: A passage is provided in a heat exchanger water compartment to permit extension of a tube therethrough and at the same time assist in sealing the tube and passage interface. The distance between the intersection of the lower bottom edge of the water compartment bottom part with the inner edge of the passage and the intersection of the horizontal extension of the upper edge of the bottom part in the direction of the passage extension has a positive value.

Abstract: An improved combustion chamber comprises a shell having a circular array of integral teeth formed at one end thereof. Shrunkfit onto said shell end at or near the roots of the teeth is a ring. The toothed end of the shell is received in an opening in a sheet header so that the ring engages against the header sheet and a continuous weld bead is formed between the ring and the header sheet all around the shell. The shell teeth are bent radially outward and engage the header sheet on the opposite side thereof from the ring so as to be in intimate thermal heat exchange contact with the sheet and these teeth are also welded to the header sheet. The aforesaid engagement between the chamber and rear head minimizes stresses on hot end of the chamber and prolong its useful life. Means engaged around the opposite end of the shell supports, and yet permits lengthwise movement of, that end of the shell.

Abstract: A tube-to-plate connection includes a plate defining an aperture where the tube is to be attached to the plate, the portion of the plate surrounding the aperture including a flange extending away from the plane of the plate and providing, at its distal extent, a lip which projects radially inwardly toward the axis of the aperture. The end of the tube lies generally against the lip to prevent movement of the tube longitudinally further through the plate. The flange includes an opening for receiving a radially deformed portion of the tube side wall adjacent the end of the tube to prevent rotation of the tube in the plate. The flange and tube end include portions adjacent the lip which are flared to prevent movement of the tube longitudinally out of engagement with the plate.

Abstract: A heat-recoverable article for protecting a conduit, for example, an electric cable, where its conductors pass through an aperture in a bulkhead, in order, for example, to prevent chafing; the article has an inner expansible and an outer shrinkable sleeve, the outer jacket of the cable terminating in an annular space between the sleeves, the space shrinking on heating of the article; one end of the inner sleeve is expansible to grip the bulkhead.

Abstract: A flexible liner, e.g. of rubber, for a manifold or apertured plate having collared apertures is disclosed, the manifold or apertured plate being part of a header tank of a heat exchanger having a bank of tubes, such as an automobile radiator. The liner has holes rimmed with sleeves corresponding to the collared apertures of the manifold or apertured plate. The sleeves are squeezed between their associated tubes and collar to effect fluidtightness around the tubes. To prevent stress developed in the sleeves being transmitted to the rest of the liner, a zone of reduced section surrounds each hole and preferably is of similar contour and coaxial therewith. The zones of reduced section are preferably grooves opening onto the side of the liner remote from the side from which the sleeves project.

Abstract: A pipe joint specifically adapted for an oil lamp inlet screen, and a method of assembly therefor, comprising a metal pipe adapted at one end to be connected to an oil pump housing and a filter screen including a molded plastic screen housing having an aperture adapted to receive the other pipe end. A metal eyelet is molded into the plastic housing and extends therefrom to embrace a circumferential rib formed on the outside surface of the pipe. An annular resilient sealing ring surrounds the pipe and is captured by the eyelet in sealing compression between the circumferential rib and the housing.

Abstract: A tube-to-plate connection includes a plate defining an aperture where the tube is to be attached to the plate, the portion of the plate surrounding the aperture including a flange extending away from the plane of the plate and providing, at its distal extent, a lip which projects radially inwardly toward the axis of the aperture. The end of the tube lies generally against the lip to prevent movement of the tube longitudinally further through the plate. The flange includes an opening for receiving a radially deformed portion of the tube side wall adjacent the end of the tube to prevent rotation of the tube in the plate. The flange and tube end include portions adjacent the lip which are flared to prevent movement of the tube longitudinally out of engagement with the plate.

Abstract: A tube-to-plate connection includes a plate defining an aperture where the tube is to be attached to the plate. The portion of the plate surrounding the aperture includes a plurality of fingers extending away from the plane of the plate and projecting radially inwardly toward the axis of the aperture. The end of the tube lies generally against the radially inward projections of the fingers to prevent movement of the tube longitudinally further through the plate. The tube side wall includes a radially deformed portion adjacent each finger to prevent rotation of the tube in the plate. The fingers and the tube end include portions adjacent the radially inward projections of the fingers which are flared radially outward to prevent movement of the tube longitudinally out of engagement with the plate.

Abstract: A tube sheet construction for heat exchangers, particularly those of the type which utilize immiscible fluid heat exchange media, is formed with a tube sheet base plate and with a plurality of heat exchange tubes extending along at least a portion of their lengths in sealed fluid-tight engagement through the tube sheet base plate. The base plate is provided with a series of internal ducts extending in flow communication with the exterior of the tubes at the portion of the length thereof in sealed engagement with the base plate. The ducts are in flow communication with the exterior of the base plate and permit leaking fluid heat exchange media to be detected and exhausted from the heat exchanger. The tube ends extend beyond the base plate and a tube sheet cover plate extends over the base plate and is rigidly connected thereto with the cover plate having the projecting ends of the tubes fixed thereto by welding or the like.

Abstract: A passage is provided in a heat exchanger water compartment to permit expansion of a tube following its introduction into the bottom of the compartment. The heat exchanger is constructed so that a parameter K.sub.1 is in the range of 1.2 to 8. This parameter is equal to the length of the surface in contact between the tube and the passage multiplied by the ratio of the thickness of the bottom to the thickness of the tube wall, and the ratio of the tensile strength of the bottom material to the tensile strength of the tube material.

Abstract: In a heat exchange apparatus, a tube holding means for providing an improved tube joint between each tube end and its tubesheet in which each tube end is expanded to become an interference fit in one of the tube containing apertures of the tubesheet. The defining surface of each tube containing aperture includes novel metal collecting portions which act to prevent a linear extension of the tube and thereby reduce undesirable stress concentrations in the tube after expansion. The forming apparatus includes a tapered driving mandrel and a plurality of oppositely tapered rolls carried in a roll cage circumferentially around the mandrel for radial movement by the mandrel against the surface defining the tube containing aperture. In forming the tube holding means the metal collecting portions are roll formed and the defining surface of the tube containing aperture is worked to improve its bonding characteristics.

Abstract: A tube-hole structure for an expanded tube-to-tube-sheet joint which is formed by axially moving a rod within each tube member in each tube hole of the tube sheet by external drive means, thereby imparting an elastic mass placed inside the tube with a sufficient compressive load to expand the tube uniformly in the radial direction to provide a rigid joint between the tube and tube hole, characterized in that each tube hole has at least one circumferential groove with an axial dimension or length of 1.5/.beta. to 3.0/.beta. (.beta. being ##EQU1## WHERE R is the mean radius of the tube member to be expanded, t is the wall thickness of the tube, and .nu. is the Poisson's ratio).

Abstract: A hub cap assembly for vehicle axles which includes a rigid hub cap body with a sidewall portion and a radially inwardly directed flange having a window therein so that the lubricant level in the axle housing can be seen without removing the hub cap. The window is received by a flange having inner and outer axially directed surfaces and an inner edge defining an opening in the cap body. The window unit includes a transparent central panel and a mounting portion comprising first and second annular, generally axially extending window-mounting flanges which are spaced radially apart from each other so as to define an annular seal-receiving groove. One window-mounting flange has an axially facing end portion snugly received against the outer axially directed surface, and another window-mounting flange extends partly through the cap body opening. The other or second window-mounting flange includes a locking device with a part which snugly engages the inner axially directed surface of the flange.

Abstract: A pipe fitting of organic polymeric material such as polyethylene is provided wherein said pipe fitting is of unitary construction and includes a first tubular body portion of substantially uniform internal and external diameters integrally connected to a tapered heat-expandable tubular body portion having an external diameter at its terminal end less than the external diameter of the first tubular body portion. A method for making said pipe fitting also is provided which includes placing a tubular structure of organic polymeric material into a mold having a molding surface corresponding to that of said pipe fitting and cold-forming said tubular structure by pressing said tubular structure in said mold.

Abstract: A fitting for joining a radiator to the main flow pipe of a single duct heating system comprises a housing which defines an inflow duct for connection to the upstream section of the main flow pipe, an outflow duct for connection to the downstream section of the main flow pipe, an inlet duct for connection to the inlet conduit of the radiator and a return duct for connection to the return conduit from the radiator. The return duct consists of a piece of bent pipe, arranged at the interior of the housing, said return duct entering in the space of the outflow duct at right angles with respect to the axis of the said overflow duct, and then making a bend so as to become parallel to the mentioned axis, in order to discharge the return water in the same direction of flow of the water in the outflow duct.

Abstract: A device to facilitate the connection of a relatively small diameter hose to a larger diameter pipe has a tubular plug-like configuration with a flared portion at one end and a cylindrical portion at the other end. With the cylindrical portion placed within the end of the hose, both the device and the hose are inserted through a side opening in the pipe. When inside the pipe the hose is pushed further onto the flared end portion of the device so that the hose is stretched to a diameter larger than the opening. Tension on the hose causes it to lodge tightly in the opening and form a permanent connection.

Abstract: A unitary tubular fitting body and cooperating mandrel for installation on a blind wall. The body includes an axially collapsible tube portion which during installation draws up the body into alignment with the wall. The body includes a frangible ring dimensioned to fail after adequate compression force is applied on the collapsing tube portion for full sealing engagement with the wall. Failure of the ring releases the mandrel and prevents overtightening of the fitting.BACKGROUND OF THE INVENTIONThe invention relates to a tubular fitting and method for its installation, and, more specifically, to a fitting and method particularly suited for use where access to only one side of a wall is available.PRIOR ARTIt is often desirable to mechanically secure a tubular fitting in fluid-tight relation to a hole in an otherwise imperforate wall to provide communication between zones on opposite sides of the wall.

Abstract: The invention is concerned with an improved joint between tubing and a flange having a hole therethrough into which the tubing is force-fit. The flange is made of powdered metal by placing the powdered metal and a lubricant in a mold, compressing the powdered metal at a pressure of at least about 4 .times. 10.sup.7 Kg. per sq. meter, removing the resulting flange from the mold, initially heaing it in an inert or reducing gas atmosphere to remove the lubricant, heating it further at a higher temperature to cause intermetallic bonding thereof, cooling it to a temperature below about 100.degree.C and dry machining annular channels into the hole in the resulting flange. The joint is formed by placing the tubing within the hole and expanding the tubing outwardly into the channels which extend from the hole. The resulting joint has a much higher resistance to torque than does a similar joint made between tubing and a machined flange of similar or even greater hardness.

Abstract: The invention is concerned with an improvement in a process for forming a tubing-machined metallic member joint and with said joint, the process comprising providing a metallic member of substantially full theoretical density having a portion thereof adapted to matingly receive a metallic tube, placing one end of said tube against the mating portion of said member, said tube being formulated of a less hard metal than said member, and urging said one end of said tube against said mating portion of said member thereby forming said joint. The improvement comprises an increase in the torque strength of said joint attained by contacting said member, prior to the placing the one end of said tube in mating contact with the mating portion of said member, with steam at a temperature and for a time sufficient to form a thin hard metal oxide on said mating portion and cooling the member after completion of the contacting and prior to placing said tube in mating contact with said mating portion.

Abstract: A connection between the end of a cylindrical pipe inserted into a hole in a plate for connection there with, the connection being fluid-tight and capable of resisting a torsional couple; the connection is effected by first expanding the pipe-end with respect to the original pipe profile and by shaping the cross-section of the outer circumference of the expanded pipe-end and the inner wall of the hole in the plate such that the projection of the zone of contact upon a plane perpendicular to the axis of the pipe differs from a pure circular form.

Abstract: A connection of a first pipe to the wall of a second pipe or container is disclosed. A hole is formed through the wall of a second pipe or container which is of a diameter smaller than the outer diameter of the first pipe. At least the connection end of the first pipe consists essentially of a polymer of ethylene or a copolymer of ethylene and a small quantity of mono-1-olefins having from 2 to 8 carbon atoms. The polymer preferably has a weight average molecular weight of above 200,000. The connection portion of the first pipe is cold-swaged and inserted into the hole. Due to the mechanical memory of the cold-swaged end of the first pipe, it recovers towards its original shape to form a firm connection between the first pipe and the second pipe or container wall. A sealant can be applied between the first and the second pipe.

Abstract: A passage is provided in a heat exchanger water compartment to permit extension of a tube therethrough and at the same time assist in sealing the tube and passage interface. The distance between the intersection of the lower bottom edge of the water compartment bottom part with the inner edge of the passage and the intersection of the horizontal extension of the upper edge of the bottom part in the direction of the passage extension has a positive value.