Abstract: An assembly includes at least one member having first and second ends. A dual metal adapter for connecting to the at least one member includes an inner tube for receiving and contacting the first end of the at least one member and being formed from a first metal having a first resistivity. An outer tube extends over the inner tube and is secured thereto. The outer tube is formed from a second metal having a second resistivity greater than the first resistivity. The first end of the at least one member is metallurgically bonded to the inner tube.

Abstract: The invention concerns a coupling for use in forming a sealed joint between first and second tubular members. The coupling provides a through-passage defined by an inner coupling face and having a first open end for insertion of the first tubular member into a first region of the through-passage and a second open end for insertion of the second tubular member into a second region of the through-passage. A first inwardly directed engagement recess is provided in the inner coupling face in the first region of the through-passage and a second inwardly directed engagement recess is provided in the inner coupling face in the second region of the passage. In the assembled joint, the first inwardly directed engagement recess aligns with a first outwardly directed engagement recess of the first tubular member to form a first channel for receipt of a first retainer to secure the first tubular member in the coupling.

Abstract: A tube joint includes a first member and a second member. The first member has a bore defining an inner diameter. The second member has a first outer surface defining a first outer diameter with two or more helical protrusions extending radially from the first outer diameter. The two or more helical protrusions collectively define a second outer diameter. The second outer diameter of the second member is larger than the inner diameter of the first member by an amount sufficient to center and retain the second member within the bore of the first member. Brazed tube joint assemblies and methods of making brazed tube joints are also described.

Abstract: A fitting (1) of weldable, thermoplastic material of a modular structure, comprising a number of elements (2, 3, 9, 10, 11, 12), at least one main element (2, 9) and at least one connecting element (3, 10, 11, 12), characterized in that the elements (2, 3, 9, 10, 11, 12) have end faces (4, 5) at right angles to the center axis (8), and the elements (2, 3, 9, 10, 11, 12) are welded to one another exclusively at the end faces (4, 5).

Abstract: A method for forming a fluid tight seal is disclosed. The method may make use of a first component having a first sealing surface, and a second component having a second sealing surface. The method may further involve coating one of the first and second sealing surfaces with a metallic film layer adapted to transform into a liquefied metallic layer when a temperature of one of the first and second surfaces exceeds a melting temperature of a metal used to form the metallic film layer. Once it becomes liquefied, the liquefied metallic layer forms a pressure-tight seal between the sealing surfaces.

Abstract: A liquid phase diffusion bonded pipe joint comprised of metal pipes or a metal pipe and a joint pipe joined by liquid phase diffusion bonding, the liquid phase diffusion bonded pipe joint comprised of a metal joint provided with a tapered slanted part press-fit into an end of a metal pipe by a thrust in a pipe axial direction while expanding the metal pipe in inside diameter and tightly engaging with the end and a joining surface part continuing from the tapered slanted part and joined with an end face of the metal pipe by liquid phase diffusion bonding and a metal pipe tightly engaging with the tapered slanted part in the expanded state and with an end face joined with the joining surface part by liquid phase diffusion bonding.

Abstract: The invention provides a connector assembly for interconnecting tubular elements. The connector assembly comprises at least one pin member, at least one box member, and for each box member a respective coating layer. Each pin member has a threaded outer surface and each box member has a threaded inner surface allowing the pin member and the box member to be screwed together. Herein the respective coating layer is positioned between the threaded surfaces of the pin member and the box member. Each coating layer is of a softer material than said threaded surfaces. The connector assembly further comprises means for removing excess coating material during make up of the pin member and the box member.

Abstract: A brazing ring is provided and includes ring material including an aluminum-zinc-silicon alloy having a first melting point and flux material contained within the ring material having a second melting point, which is substantially lower than the first melting point, the ring material being formed such that the flux material is exposed outwardly to a heat source and such that, upon heating, flux material melts before the ring material.

Abstract: A coupling apparatus that may have a first component having a first sealing surface and a second component having a second sealing surface. The first and second sealing surfaces are in facing relationship with one another when the first and second components are coupled together. One of the first and second sealing surfaces has a metallic film layer that transforms into a liquefied metal layer when the metallic film layer is exposed to a temperature that exceeds a melting temperature of a metal from which the metallic film layer is formed. The liquefied metal layer forms a seal between the sealing surfaces.

Abstract: An exhaust system of a motor vehicle includes, but is not limited to an inner exhaust pipe that is inserted into an outer exhaust pipe in an overlap region, and the two exhaust pipes are crimped in the overlap region.

Abstract: A coupling for a double tube is configured to connect with the double tube. The double tube includes an outer tube for a first fluid to flow therethrough. The double tube includes an inner tube provided inside of the outer tube and having an end protruding from the outer tube, the inner tube for a second fluid to flow therethrough. The coupling includes a branched portion brazed to an end of the outer tube and brazed to an end of the inner tube, with the end of the inner tube protruding outside through the branched portion. The branched portion is formed as a curved tube having a curved portion. The branched portion has an end joined to an end of the outer tube, with the curved portion having a through-hole for the inner tube to pass therethrough.

Abstract: A soldered feed-through device that is inserted into a bulkhead opening has one or more sets of laterally protruding and symmetrically distributed teeth that cut through the bulkhead material as the feed-through is inserted into the bulkhead opening. The teeth automatically center the feed-through device within the bulkhead opening and resist tilting of the feed-through and its through-hole conductor so that application of solder to the area between the feed-through and the inner periphery of the opening produces a solder joint having uniform radial thickness of preferably about 0.14 mm (0.0055 in.).

Abstract: There is provided a process that includes providing an extruded fitting having a bore formed therein. The bore is machined from one or both sides of the extruded fitting to provide a ledge on one side for interacting with a corresponding fitting and a stop on the other. A pipe and braze sleeve are placed in combination into the bore and engage the stop. The pipe and bore include anti-rotation and location irregularities formed thereon to maintain a desired orientation of the parts. A mandrel is used to deform the pipe and sleeve to the shape of the bore. The parts are then brazed in a furnace.

Abstract: A pipe (40) having a specific length is filled with nitrogen gas (4a). From opening ends of connecting portions (42, 42) located at respective ends of the pipe (40), cross sectionally hat-shaped block plugs (50) made of brazing material are pressed into the connecting portions (42, 42) respectively and are fitted thereto for the purpose of sealing the pipe (40). Next, one end of a connecting piece (60) is inserted into the connecting portion (42) of one pipe (40) so as to break through the block plug (50) fitted thereto. The other end of the connecting piece (60) is also inserted into the connecting portion (42) of another pipe (40) so as to break through the block plug (50) fitted thereto. Thereafter, the block plugs (50) are melt so that the connecting portions (42) of both the pipes (40) are brazed with the connecting piece (60).