Abstract: A compact, easily used, high quality sealing plug for use with ultrasonic testing equipment which incorporates a single annular body with an indented diaphragm portion, two lips, an annular vertical wall extending upwardly from said indented diaphragm portion of said single circular body with two annular lips extending outwardly therefrom, one at the upper end of said annular wall and the other therebelow so that when said seal is in use, the upper lip will maintain a position above the insulation material in which the seal is placed, while the lower lip will be below said outermost surface, both lips counteracting each other to maintain tension therebetween and the present invention from becoming unintentionally dislodged from its location. Alternative embodiments of the present invention are also disclosed which include alternative lip arrangements for alternative sealing needs and desires.

Abstract: A method is provided for replacing a length of a branch gas main 1 joined to a spine main 2 with a length of replacement main 7 having an outer diameter smaller than the inner diameter of the branch main. In the method access is gained to the bore of the branch main and one end of the replacement main 7 is fed along the branch main 1 via the access point and towards the spine main 2 until the branch main 1 has been replaced. During and after the feeding step gas is prevented from entering any clearance 20 between the mains 1 and 7 by means of a head 9 attached to the leading end of the main 7. After the feeding step a sealant 25 is injected into the branch main 1 to form a seal within the clearance 20.

Abstract: A multi-layer tube suitable for use on motor vehicles composed of a cylindrical wall having an outer surface, and an inner surface essentially parallel to the outer surface. The cylindrical wall has a first region having an essentially uniform cross-sectional diameter and a second region which has a cross-sectional diameter differing from the essentially uniform cross-sectional diameter of the first region. The second region has at least one convolution contiguously adjacent to the cylindrical wall of the first region.

Abstract: A method is provided for replacing a length of a branch gas main 1 joined to a spine main 2 with a length of replacement main 7 having an outer diameter smaller than the inner diameter of the branch main. In the method access is gained to the bore of the branch main and one end of the replacement main 7 is fed along the branch main 1 via the access point and towards the spine main 2 until the branch main 1 has been replaced. During and after the feeding step gas is prevented from entering any clearance 20 between the mains 1 and 7 by means of a head 9 attached to the leading end of the main 7. After the feeding step a sealant 25 is injected into the branch main 1 to form a seal within the clearance 20.

Abstract: A flexible hose construction and method of making the same are provided, the flexible hose construction comprising an inner corrugated hose made of polymeric material and having a plurality of outwardly convex projections with recesses therebetween and extending from one end thereof to the other end thereof, an outer sleeve of reinforcing material disposed in telescoping relation on the inner hose, and stiff polymeric material disposed between the sleeve of reinforcing material and the inner corrugated hose and having an outer peripheral surface arrangement that is substantially straight-line smooth and continuous between each pair of adjacent projections and substantially coplanar with the apexes of the projections and having an inner peripheral surface arrangement that substantially mates with and is disposed in engagement with the projections and the recesses from the one end to the other end of the inner corrugated hose.

Abstract: A flexible hose construction and method of making the same are provided, the flexible hose construction comprising an inner tube made of polymeric material, an outer sleeve of reinforcing material disposed in telescoping relation on the inner tube from one end thereof to the other end thereof, rib structure disposed between the sleeve of reinforcing material and the inner tube, the rib structure being disposed on the inner tube so as to define alternating coil structure of rib structure and coil structure of non-rib structure serially along the longitudinal axis of the inner tube in a like repeating pattern thereof, the coil structure of non-rib structure comprise coil structure of void space, and an outer tube of polymeric material disposed between the rib structure and the sleeve of reinforcing material so as to extend in a generally straight-line manner from coil structure of the rib structure to coil structure of the rib structure so as to tend to prevent the sleeve of reinforcing material from entering i

Abstract: The present invention relates to a plastic abrasion resistant protective sleeve for covering a radiator hose. The sleeve of the invention has an annularly corrugated external surface comprising a plurality of projections and troughs formed in said sleeve. The projections are substantially evenly distributed and have a substantially uniform size. The sleeve has a slit along its longitudinal axis which provides for easy application to or removal from the hose, and is made of plastic that is substantially unaffected by high temperatures. A method of using said protective sleeve for protecting a radiator hose from abrasion also is provided.

Abstract: A reinforced hose including at least one of a pressure-resistant reinforcement, a tensile-strength reinforcement and/or an inner carcass. At least one of the pressure-resistant reinforcement, the tensile-strength reinforcement and the inner carcass have at least one elongated element formed as one of a profile, a cable, an interlockable wire, and a strip with the at least one elongated element being composed of an aluminum-based alloy.

Abstract: A flexible hose construction and method of making the same are provided, the flexible hose construction comprising an inner corrugated hose made of polymeric material and having a plurality of outwardly convex projections with recesses therebetween and extending from one end thereof to the other end thereof, an outer sleeve of reinforcing material disposed in telescoping relation on the inner hose, and a sleeve of porous and spongy polymeric material disposed between the sleeve of reinforcing material and the inner corrugated hose and having an outer peripheral surface that is substantially straight-line smooth and continuous and spaced outboard of the apexes of the projections and having an inner peripheral surface that substantially mates with and is disposed in engagement with the projections and the recesses from the one end to the other end of the inner corrugated hose.

Abstract: A pipe fitting having an end wall and forming a port radially inwardly of the flange to align with the wall opening; an annular elastomeric seal positioned to be compressed between the wall and the work body wall for preventing leakage of fluid outwardly from the wall opening; a test cap unit spaced from the seal and aligned therewith to close off the opening and fastener structure extending through the cap unit and adjustably attached to the fitting for urging the cap unit into sealing relation with the inner side of the work body wall, about the opening, when the seal is compressed as aforesaid, whereby the cap unit then closes off the opening so that test liquid under pressure can be filled into the fitting to test for leakage; the cap unit having annular sealing structure facing toward the annular seal for sealing engagement with the wall inner side, the sealing structure comprising an elastomeric ring and the cap unit includes a plate carrying the ring, the ring consisting of resiliently deflectable mate

Abstract: A hose for lining pressure pipe lines is described comprising a web being made up of warp and woof threads, which are made of plastic, as well as a coating of thermoplastic material, which coating is impermeable to the medium to be transported in the pipe lines and is applied onto one side of the web. Due to the pressure of a fluid, the hose is introduced into a pipe line and turned up therewith, in which case a cement in the interior of the hose prior to turning-up will come between the outside of the hose and the inside wall of the pipe line. In order to, on the one hand, obtain high strength in the longitudinal direction and to, on the other hand, facilitate introduction of the hose into the pipe line, the stretching ability of the web, in the transverse direction of the hose, is greater by at least one third as compared to that in its longitudinal direction and, preferably, is at least twice as great.

Abstract: An armoured flexible pipe having one or more of the following components, a pressure resistant armouring, a traction resistant armouring and/or an internal carcase, in which pipe at least one of said components comprises one or more elongated elements such as a shaped piece, a cable, a wire or a strip. The element is formed of a composite material with aluminium alloy matrix comprising reinforcement elements such as particles and/or whiskers.

Abstract: A plug (10) is disclosed which is clamped to the end of a first pipeline section (14) being worked on by a line travel device (12). The line travel device (12) can completely perform its operation on the first pipeline section and move on to the plug. The plug is then unclamped from the first pipeline section and the plug and line travel device are moved together to the second pipeline section (16) to be worked on. The plug is clamped to the second pipeline section (16) to be worked on and the line travel device moves off the plug onto the second pipeline section to perform its operation on the entire length of the section.

Abstract: A flange disc for protecting a flange having an inner annular machined surface surrounded by an outer surface with bolt holes extending through the outer surface and opening to a back surface opposing the outer surface, includes: a disc of flexible material having a size corresponding to a size of the outer surface of the flange to selectively cover the inner surface, outer surface and bolt holes, the disc defining a disc plane; and a plurality of connectors symmetrically located about a periphery of the disc at locations corresponding to at least some of the bolt holes, the connectors being integral with the disc and having, at one end, a resilient hinge portion and, at an opposite end, an engagement portion for engaging the corresponding bolt hole, the connectors rotating about the hinge portion between a transport position in which the engagement portion is in the disc plane and an engagement position in which the engagement portion is angled with respect to the disc plane for engaging the bolt hole.

Abstract: A threaded rod (40) extends through two blocks (20, 22). Each block (20, 22) has a bore. The bore of the first of the two blocks (20) is not threaded and is prevented from moving when the threaded rod is turned. The bore of the second of the two blocks (22) is threaded and engages the threads of the threaded rod (40). As the rod (40) is turned clockwise or counter clockwise, the second block (22) responds by moving toward or away from the first block (20). One side of each block (20, 22) is connected to a plate (24, 26) which is contoured to fit the inner wall of a tube (11) or pipe. The blocks (20, 22) and plates (24, 26) are pivotally connected by bars (30). A cold welding compound is applied to the plates and the device is inserted into a tube (11) to be repaired. When the plates (24, 26) are aligned over the portion of the tube (11 ) to be repaired, the threaded rod (40) is rotated so that the second block (22) moves toward the first block (20) causing the plates (24, 26) to move outward.

Abstract: A liner pipe comprising sections of polyethylene pipe connected by articulated gasketed joints of bell and spigot design which are specifically adapted for ease of compression lining of large diameter pipe with minimum disruption to surface traffic and pipeline flow.

Abstract: A tubular structure, such as a pipe or pressure vessel, is provided with a wall formed from plastic, composites and elastomeric materials. The composite materials are spirally wound and are separated by elastomeric strips. The wall has an inner wall element formed by a continuous flexible plastic cylinder with a spiral projection on its outer surface. An outer layer is formed from alternating spirally wound strips of composite and elastomer. The composite strip has a radially inward projection axially spaced from the projection on the plastic cylinder but overlapping in the radial direction. The cylinder and layer are separated by an intermediate layer formed from composites and elastomeric strips. A composite strip is located between each pair of adjacent projections and separated from the projections by an elastomeric strip. An outer wall element is formed from alternating spirally wound composite and elastomeric strips having pitch greater than the inner wall element.

Abstract: A pipe fitting having a end flange and forming a port radially inwardly of the flange to align with the wall opening; an annular elastomeric seal positioned to be compressed between the flange and the work body wall for preventing leakage of fluid outwardly from the wall opening; a test cap unit spaced from the seal and aligned therewith to close off the opening and fastener structure extending through the cap unit and adjustably attached to the fitting for urging the cap unit into sealing relation with the inner side of the work body wall, about the opening, when the seal is compressed as aforesaid, whereby the cap unit then closes off the opening so that test liquid under pressure can be filled into the fitting to test for leakage adjacent the elastomeric seal.

Abstract: An improved, easily removable plug for plugging the open end of a heat exchanger tube in a nuclear steam generator is disclosed herein. The plug generally comprises a cylindrical shell of Inconel.RTM. having tapered side walls, a closed end, an open end, a cork-shaped expander element disposed within the shell that radially expands the tapered side walls of the shell into sealing engagement with the inner walls of a tube when axially drawn from the closed to the open end of the shell, and a wall section in the interior of the shell between the closed end and the tapered side walls for receiving the expander element when this element is pushed back from the open end of the shell back against the closed end thereof, thereby affording clear mechanical access to the interior of the tapered side walls of the shell.

Abstract: A rectifier for establishing a flat fluid flow velocity profile in a pipe 16 is composed of a bundle of cylindrical tubes 12 of the same diameter and length, assembled to form a cylindrical block 10 having a diameter equal to the interior diameter of the pipe and having a honeycomb section. The interstices 18 remaining between the tubes of a median ring r.sub.2 are filled with a suitable filling material, while those 20 between the tubes of an outer ring r.sub.1 and those in a central zone r.sub.3 of the rectifier are left open.