Abstract: A part for connecting a fluid line to an opening of a container comprised of thermoplastic material or for closing the opening of the container has a first component and a second component of thermoplastic material. The first component has a surface to be connected to the container by forming a welded heat fusion joint. The first component has an insufficient diffusion barrier capability relative to hydrocarbon fuel. Compared to the material of the first component, the material of the second component has higher diffusion barrier capability, reduced swelling capability relative hydrocarbon fuel, higher mechanical strength, and higher thermal shape stability. The first component encloses the second component at least up to an injection location remote from the connecting surface. The material of the second component is injected into the still formable core of the material of the first component via the injection location.

Abstract: A tool assembly and a process for using it is provided, wherein a single elongate handle member may be used, through a small hole at the ground surface, to reach underground pipes for installing different sized strap “T” couplings on different sized pipes, and for driving sleeve members associated with said strap “T” couplings, pneumatically, from above ground, to engage pipes at various locations below ground.

Abstract: A system and kit of components for winterizing plants and trees, where the invention comprises a skeletal frame formed by plural first tubular members, each having an upper end and a lower end. When assembled, the respective lower ends are spaced apart and positioned vertically and anchored within the ground surrounding the plant or tree. Joined between adjacent first tubular members are plural second tubular, horizontally oriented, members to form a generally square skeletal frame. About the skeletal frame is a light-transmitting plastic wrap. Overriding the skeletal frame is a top frame, preferably pivotal about a pair of upper ends, to allow access to the protected plant or tree. Additionally, the invention contemplates a cover, such as a plastic wrap or canvas-like material over the top frame to ensure complete protection of the plant or tree.

Abstract: A connector for a fuel tank includes a flange portion, an outer connecting portion to be connected to a pipe member and an inner connecting portion to be inserted into a fuel tank through a connecting opening of the fuel tank. The inner connecting portion has an engaging portion to be engaged with an engaged portion provided to a member when the member is to be disposed in the fuel tank. The flange portion includes an outer flange member made of a synthetic resin same as that of an outer surface of the fuel tank, and an inner flange member made of a synthetic resin having a gas barrier property and a rigidity higher than that of the synthetic resin constituting the outer flange member. The inner connecting portion and the inner flange member are made of the same material.

Abstract: A coupling member for connecting a part, provided for receiving or dispensing fuel and made primarily of HDPE (high-density polyethylene), to a fluid line has first, second, and third components made of meltable material. The third component forms a heat fusion joint with the part for receiving or dispensing fuel and has an undesirably high permeability and swelling capacity relative to fuel. The third component is connected to the first component by material bonding and positive-locking action. The second component has greater fuel blocking capacity and higher strength than the third component. The second component is embedded in the third component. A volume ratio of second and third components is selected such that combined properties of the second and third components concerning permeability, strength, and volume changes by swelling are approximated to these same properties of the second component. The first and third components are heat-fusible to one another.

Abstract: A method of forming a gas impermeable joint in a fluid system includes: providing a tube having a metallic barrier layer disposed between an inner plastic layer and an outer plastic layer; forcing at least one of the inner plastic layer and the outer plastic layer into contact with a plastic surface of a component; and welding the at least one of the inner plastic layer and the outer plastic layer with the plastic surface to form the gas impermeable joint. The welding may include: spin welding, hot plate welding, vibration welding, and ultrasonic welding. The metallic barrier layer extends substantially to the component, thus improving the gas impermeability of the joint between the tube and the component.

Abstract: An apparatus and method for sealing a leak in a plastic pipe is provided. The apparatus includes a body and an electrofusion element. The body is constructed of a substantially rigid material and has an upper surface and a lower surface. The lower surface is adapted to be positionable about at least a leak portion of a plastic pipe. The electrofusion element is disposed about the lower surface of the body and operable to sealably couple with the plastic pipe to encapsulate the leak.

Abstract: An apparatus for encapsulating a connection of a pipe for transporting a fluid is provided. The apparatus includes a first section having at least one electrocoil surface operable to sealingly engage a surface of the pipe. The apparatus further includes a second section having at least one electrocoil surface operable to sealingly engage the surface of the pipe. The second section operably sealable to the first section to encapsulate a portion of the pipe and the connection of the pipe. The apparatus further includes at least one terminal mounted on at least one of the first and second sections. The terminal operable to energize the electrocoil surfaces of the first and second sections to electrofuse the electrocoil surfaces of the first and second sections to the surface of the pipe.

Abstract: A welded structure constituted of a fuel filling container having an opening, and a welded part including a pipe-shaped section whose one end is disposed in the opening of the fuel filling container. A welding section is fixedly disposed around the outer periphery of the pipe-shaped section. The welding section is welded through a welding surface to the outer surface of the fuel filling container. In the welded structure, the welding section of the welded part includes a welding strength providing layer and a fuel permeation resistance layer which are coaxial with the pipe-shaped section of the welded part and radially laminated to define the annular welding surface. Additionally, at least an inner peripheral surface portion of the pipe-shaped section and an outer peripheral surface portion of the other end portion of the pipe-shaped section are formed of a fuel permeation resisting material.

Abstract: An apparatus for creating a permanent, leak-proof plastic tubing joint including a length of plastic tubing, a fitting component and a device capable of generating a local electromagnetic field. The fitting component is manufactured of a polymer containing nonpolymeric particles capable of absorbing a specific frequency of electromagnetic energy. An end of the length of plastic tubing is slidably inserted into the fitting component. When the tubing has been fully inserted, a device is activated to generate a local electromagnetic field surrounding the fitting component. The nonpolymeric particles absorb the electromagnetic energy and increase in temperature. This temperature increase causes the fitting component to begin melting at the interface with the plastic tubing while at the same time causing the end of plastic tubing to become pliable. The electromagnetic field is then removed and both the fitting component and the end of plastic tubing cool to ambient temperature.

Abstract: Connection structure for connecting a piping used in automobiles or the like to a ring joint for providing highly reliable gas-tightness. The ring joint includes a ring joint body including a fitting hole for an eyebolt, the fitting hole being piercingly formed in an axial core portion of the ring joint body and in continuation from an annular recessed groove formed inside the ring joint body, and a flow path extending in a direction perpendicular to and intersecting with the fitting hole. A branch pipe is formed as a unitary body with the ring joint body and arranged in a direction perpendicular to and intersecting with the eyebolt. A piping for insertion into the branch pipe has an outer peripheral surface covered with resin, and the resin of the outer peripheral surface of the piping and an inner peripheral surface of the branch pipe are fixedly welded to one another.

Abstract: A welded flange connection and methods and apparatus for producing the connection are disclosed. A weld insert is disposed between the flared ends of abutted plastic pipe or plastic-lined pipe sections. The weld insert includes an annular support disc having a resistance heating element disposed at least about the inner circumference of the disc. When held tightly between the flared ends of abutted pipe sections power can be applied to the heating element to produce sufficient heat to temporarily raise the temperature of the adjacent surfaces of the flared sections of pipe above their melting point. When the weld is cooled, a strong, fluid-tight, thermoplastic weld is formed. A welded flange connection using the weld insert of the present invention effectively and efficiently produces high quality, fluid-tight connections in plastic pipe and plastic-lined piping systems.

Abstract: A fluid coupling between a fluid carrying first component and a second fluid carrying endform is formed by spin welding induced by a bonding material disposed in a recess in the first component which is spin weld compatible with the materials of the first and second component to spin weld join the first and second components together.

Abstract: When resin members (3, 4) are fusion-bonded to each other by electric-conduction heating, a net-form or pattern-form metal wire (2) as a resistance heating element is disposed at a joint portion of the resin members (3, 4), and a metal wire (2) is heated by electric conduction for fusion-bonding the abutting resin members (3, 4) at temperatures sufficient for fusion-bonding with the resin members kept abutting against each other. A production method for a resin-processed product that can increase the strength of the joint portions between resin members, is free from carbon generation and short-circuiting during the electric conduction of a built-in resistance heating element (heating element), and is simple to produce while hardly being affected by environmental temperatures.

Abstract: An attachment is fixed to a fuel tank made of a synthetic resin, and is formed of a primary molding portion and a hydrocarbon barrier layer. The primary molding portion is formed of a first material capable being welded to the fuel tank, and includes a hollow section to be inserted into fuel tank, and a flange formed on the hollow section to be connected to an outer surface of the fuel tank. The hollow section has a plurality of holes for allowing a molten resin material to flow therethrough when formed. The hydrocarbon barrier layer has a property of preventing permeation of hydrocarbon. The hydrocarbon barrier layer is formed on at least a part of an inner periphery of the cylinder section. A connection section is formed at the hollow section to have another member thereon.

Abstract: A hose assembly and method of making the hose assembly are disclosed. The method of making the hose assembly may include inserting an end of a hose into a sleeve portion of a fitting. The hose may have an outer diameter relative to an inner diameter of the sleeve portion to cause contact between an exterior of the hose and the sleeve portion of the fitting. A magnetic pulse may be directed on the sleeve portion of the fitting and the end of the hose within the sleeve portion to form one of a metallurgical bond, a molecular bond or a mechanical bond between the sleeve portion of the fitting and the hose without heat damaging the hose assembly.

Abstract: A pipe seal is disclosed which comprises a main body portion (1) adapted to be fixed to the wall (12) of a chamber, tank, or the like, a face plate (6) adapted to be secured to the body portion to surround, in use, a pipe (14) to be sealed, the body and face plate between them housing a deformable member (9) in contact with a seal (8), such that, on forcing the face plate toward the body portion, the deformable member, in use, deforms and presses the seal into sealing contact with the pipe. The design of this pipe seal allows the pipe to enter the chamber wall at an angle of, for example, up to 12 degrees from a right angle. Hence the end of a pipe could generate a cone of movement with an included angle of 24 degrees. The seal therefore permits considerable positional movement of the pipe to allow connection of the pipe to its termination point within the chamber.

Abstract: The invention relates to a connecting element (1) comprising a first body with a through-going axial opening (3) situated in the first body (2) for liquid communication between the first end portion (4) of the first body (2) and the second end portion (5) of the first body (2), said first end portion (4) comprising a cavity (6), and wherein the cavity (6) comprises a female part (9) with a through-going opening (10) and manufactured from a first plastics material and comprising an inner area (35) for mounting of a tube (24) by means of first attachment means (8); and wherein the first body is manufactured from a second plastics material different firm the first plastics material.

Abstract: A first half part includes a second raised portion and a third raised portion respectively on the inner side of the hollow body and on the outer side of the hollow body with respect to a first raised portion, the second raised portion and the third raised portion being separated from the first raised portion with a spacing and being lower than the first raised portion. A second half part includes a third raised portion on the outer side of the hollow body with respect to a first raised portion, the third raised portion being separated from the first raised portion with a spacing and being lower than the first raised portion. An internal member includes a second raised portion on the inner side of the hollow body with respect to a first raised portion, the second raised portion being separated from the first raised portion with a spacing and being lower than the first raised portion. As a result, there is provided a high quality hollow body that can be provided at low cost and is cosmetically appealing.

Abstract: A tubular assembly which includes a first (or outer) tube (12), a second (or inner) tube (21) and a plug (42) within the second tube (21) is described. The plug (42) resides within at least a portion of the second tube (21), which itself resides within a portion of the first tube (12). The first (12) and second (21) tubes each have perforations (15, 24), at least some of which are aligned. The plug (42) has cavities (45) in its exterior surface (48), at least some of which are aligned with the aligned perforations (36). Plastic material (e.g., thermoplastic material) is molded through aligned perforations (36) and at least partially fills aligned cavities (45). The edges (39) of aligned perforations (36) are embedded in the plastic material (53) molded therethrough. The plastic material (53) extending through aligned perforations (36), into cavities (45) and embedding perforation edges (39) therein, serves to fixedly attach the first tube (12), second tube (21) and plug (42) together.

Abstract: A quick connector apparatus and method of forming same includes a retainer element having a first end portion spin welded to an inner surface of a bore formed in an end portion of a first conduit after a sealing element has been mounted in the end portion of the first conduit. The retainer element includes a movable latch member projecting from the second end which is engagable with an enlarged annular flange on the second conduit to releasably interconnect the second conduit and the retainer; while at the same time providing sealing between the second conduit and the first conduit via engagement between the internally mounted sealing element and the retainer element.

Abstract: A fuel tank connector for connecting a fuel tank and a pipe in communicating fashion includes a gas barrier member made of a synthetic resin and having a gas barrier property. The gas barrier member includes a tubular portion and a flanged portion provided on a peripheral side of the tubular portion, which extends beyond an opening of the fuel tank. The gas barrier member is made of a liquid crystal polymer, aromatic polyamide, a blended polymer of an ethylene-vinyl alcohol copolymer and high-density polyethylene, a blended polymer of polyamide and polyethylene, or a blended polymer of polyamide and high-density polyethylene.

Abstract: A part for connecting a fluid line to an opening of a container comprised of thermoplastic material or for closing the opening of the container has a first component and a second component of thermoplastic material. The first component has a surface to be connected to the container by forming a welded heat fusion joint. The first component has an insufficient diffusion barrier capability relative to hydrocarbon fuel. Compared to the material of the first component, the material of the second component has higher diffusion barrier capability, reduced swelling capability relative hydrocarbon fuel, higher mechanical strength, and higher thermal shape stability. The first component encloses the second component at least up to an injection location remote from the connecting surface. The material of the second component is injected into the still formable core of the material of the first component via the injection location.

Abstract: A coupling member for connecting a part, provided for receiving or dispensing fuel and made primarily of HDPE (high-density polyethylene), to a fluid line has first, second, and third components made of meltable material. The third component forms a heat fusion joint with the part for receiving or dispensing fuel and has an undesirably high permeability and swelling capacity relative to fuel. The third component is connected to the first component by material bonding and positive-locking action. The second component has greater fuel blocking capacity and higher strength than the third component. The second component is embedded in the third component. A volume ratio of second and third components is selected such that combined properties of the second and third components concerning permeability, strength, and volume changes by swelling are approximated to these same properties of the second component. The first and third components are heat-fusible to one another.

Abstract: An apparatus for creating a permanent and fluid tight tube joint in a length of plastic tubing, the tubing including a terminal end, the apparatus including a manifold for receiving the plastic tubing, the manifold including structure defining a first counterbore presenting a tubing terminal end engaging face, structure defining a second counterbore presenting a seal engaging face, and the manifold further presenting a manifold coupling face. A seal is receivable within the second counterbore and a gripping element is receivable within the manifold and adapted for fixedly engaging the tubing. A retainer includes a compressive member and a retainer coupling face, the retainer compressive member receivable within the second counterbore for operably, compressively engaging the seal.

Abstract: The present invention provides a method for producing a repair material for use in repairing an interface area between two intersecting conduits. According to one aspect of the invention, a mold is provided having similar dimensions to an interface area. The interface area is defined by a first conduit and a flange connecting the first conduit to a second conduit. A repair material is provided having a material structure, the material structure defined by an arrangement of fibers such that the material structure has similar dimensions to the interface area. The arrangement of fibers further allowing the repair material to be flexible and seamless. A resin is provided, the resin having a resin viscosity. An additive is provided, the additive is adapted to increase the resin viscosity. The additive is mixed with the resin to form a resin-additive mixture whereby the resin viscosity is increased after a time delay.

Abstract: A tank joint part has a welding member welded to the outer surface of a fuel tank and a main body formed of a material of low fuel permeability and welded or otherwise joined to the welding member. The welding member is formed of modified polyethylene, which is easily weldable or otherwise joinable to the outer surface of the fuel tank and the main body, and in which very fine particles of a layered mineral are easily dispersible. The mineral is dispersed in layers oriented substantially at right angles to the direction of any possible permeation from the tank joint part. The tank joint part ensures a low fuel permeability and a high bonding strength.

Abstract: An apparatus for encapsulating a connection of a pipe for transporting a fluid is provided. The apparatus includes a first section having at least one electrocoil surface operable to sealingly engage a surface of the pipe. The apparatus further includes a second section having at least one electrocoil surface operable to sealingly engage the surface of the pipe. The second section operably sealable to the first section to encapsulate a portion of the pipe and the connection of the pipe. The apparatus further includes at least one terminal mounted on at least one of the first and second sections. The terminal operable to energize the electrocoil surfaces of the first and second sections to electrofuse the electrocoil surfaces of the first and second sections to the surface of the pipe.

Abstract: The present invention is an improved O-ring seal flat face fitting of the type having a male portion including an O-ring, and a female portion having a tube with an inside diameter, an extended peripheral limit having a diameter corresponding to said inside diameter, a nut, and a joinder portion. It is improved by the joinder portion including a void having a portion extending radially beyond the extended peripheral limit.

Abstract: The present invention is directed to a welded flange connection and to methods and apparatus for producing the connection. A weld insert is disposed between the flared ends of abutted plastic pipe or plastic-lined pipe sections. The weld insert includes an annular support disc having a resistance heating element disposed at least about the inner circumference of the disc. When held tightly between the flared ends of abutted pipe sections power can be applied to the heating element to produce sufficient heat to temporarily raise the temperature of the adjacent surfaces of the flared sections of pipe above their melting point. When the weld is cooled, a strong, fluid-tight, thermoplastic weld is formed. A welded flange connection using the weld insert of the present invention effectively and efficiently produces high quality, fluid-tight connections in plastic pipe and plastic-lined piping systems.

Abstract: A fluid control apparatus and its manufacturing method can meet various demands or needs on specification of a customer. This saves a maker of the apparatus a large stock of various types of the apparatus and the use of an expensive mold. Consequently, the apparatus and its manufacturing method are advantageous from an economical point of view. The apparatus is provided with a pair of plastic coupling openings (2) and (3) in its inlet and its outlet portion, respectively. The coupling openings (2) and (3) form a pair of opposite end projections of the apparatus, and are capable of being welded to plastic tube members (4) and (5) of a customer's designed fluid circuit, respectively, through a butt welding process when the apparatus is delivered to the customer. The tube members (4) and (5) are designed according to the customer's design specification.

Abstract: An optical assembly includes a light source, a support member and a receptacle. The support member is made of plastic, forming a first junction surface. The light source is contained in the support member. The receptacle is made of metal or plastic forming a second junction surface. The receptacle is attached to the support member with the second junction surface positioned on the first junction surface. A resistance wire is positioned in the support member surrounding the aperture and proximate the first junction surface. Two terminals of the wire extend outside the support member for being coupled to an external power source. To assemble the optical assembly, the receptacle and the support member are mounted in an aligning apparatus which operates to adjust the relative position between the receptacle and the support member.

Abstract: A tubular resin connection structure is disclosed that includes a resin connector and a resin tube. The resin tube is fixedly coupled to one of the first and second ends of the resin connector in a fluid-tight manner by a weld disposed between the resin connector and the resin tube. Preferably, one end of the resin tube is inserted into a molding die and a portion of the resin connector is welded to the resin tube by overmolding the resin of the resin connector during injection molding. In other words, the weld between the resin connector and the resin tube is formed overmolding a resin of the resin connector over the resin tube to simultaneously the mold the resin connector and form the weld between the resin connector and the resin tube.

Abstract: A tank joint part has a welding member welded to the outer surface of a fuel tank and a main body formed of a material of low fuel permeability and welded or otherwise joined to the welding member. The welding member is formed of modified polyethylene, which is easily weldable or otherwise joinable to the outer surface of the fuel tank and the main body, and in which very fine particles of a layered mineral are easily dispersible. The mineral is dispersed in layers oriented substantially at right angles to the direction of any possible permeation from the tank joint part. The tank joint part ensures a low fuel permeability and a high bonding strength.

Abstract: A continuous flexible conduit is formed from like-configured components, each having a male joint member and a female joint member with a passageway extending therethrough. The female joint member is over-molded about a corresponding male joint member to form a substantially fluid-tight articulating joint. In a method of producing the flexible conduit, a single-shot molding process is used to form each like-configured component, with each newly formed component indexed within the single-shot mold so that the male joint member is within the female mold cavity for the formation of the next component. In an alternative embodiment, a continuous conduit is formed of two different sets of like configured components—one set having only female joint members and the other set having only male joint members. A two-shot molding process is described for continuous production of the flexible conduit using these two sets of components.

Abstract: A coupling sleeve (4) for connecting to at least one pipe section (2,3) fitted in an insertion end (29) thereof comprises an inner bush (5) made of thermoplastic material and an outer bush (6), in which inner bush resistance wires are accommodated, which resistance wires (7) can be connected to an electric power source for melting the surfaces of the coupling sleeve which face each other and those of each pipe section, in order to create a welded joint, which inner bush and outer bush in axial section have parts (8,9) which mesh with each other, in order to transmit axial and/or tangential forces. The inner bush has at least one part with a flank which faces the insertion end and which in an axial plane is determined by a tangent forming an angle of less then 45° with the axis of the inner bush.

Abstract: The invention provides an electrofusion joint made of a thermoplastic resin for connection with a resin pipe by heat generation of heating wires embedded in its saddle portion through electric conduction, such as a saddle joint comprising a saddle portion to be fitted to an outer circumferential surface of a resin pipe provided with heating wires embedded in its surface to be joined to the resin pipe, also comprising a spigot projecting from the saddle portion and to which a branch pipe is to be connected, or a service tee joint comprising a saddle portion in which heating wires are embedded, a trunk portion projecting from the saddle portion and a spigot projecting in a lateral direction from the trunk portion.

Abstract: A first flux-loop inductive coupler element electrically couples with a second flux-loop inductive coupler element. The first flux-loop inductive coupler element comprises a first ring-like core having high magnetic permeability and a conical-section annular first face transverse to the plane of the first core. The first face has a first annular groove separating a first conical-section larger-diameter face and a first conical-section smaller-diameter face. A first coil is wound within the annular groove. The first and second cores form a low-reluctance closed magnetic path around the first coil and a second coil of the second flux-loop inductive coupler element.

Abstract: An insert section of an insert member is inserted into a tube member in a state in which the insert member is detached from a recess to form a diametrally expanded section on the tube member. Subsequently, the insert member is fitted to the recess to install the tube member to the recess. At this stage, an outer circumferential surface of an expanded section of the insert member tightly contacts with an inner circumferential surface of the recess to effect the sealing function. Subsequently, a tapered section and an outer circumferential surface of the tube member are resin-welded by using a welding material. Thus, the tube member is prevented from disengagement from a body.

Abstract: A union for tubes having a first external wall and a second internal wall coaxial with the first to define a chamber around a central duct. The union includes at least two seats for reception each of one end of a tube to be connected. Each seat includes a first surface designed to adhere to an end segment of the first wall of a tube inserted in the seat and a second surface coaxial with the first and designed to adhere to an end segment of the second wall of the tube. Between the first and second surfaces of the union there is a connection surface. The union includes in it first ducts which lead into the connection surfaces to provide connection between the chambers of tubes inserted in the seats and second ducts which lead into spaces circumscribed by the second surfaces to provide connection between the central ducts of the tubes.

Abstract: Jointing systems for plastics pipes are known where electrofusion is employed to create a welded joint between two pipe ends. Conventional electrofusion units work well on pipes of small diameter, below 400mm, but with larger diameters difficulties arise. The invention seeks to overcome difficulties of joining large diameter pipes, an objective met by a jointing system comprising a strip of plastics material wound with a resistance wire, and a containment strip of a compatible plastics material. Both of the wound strip and the containment strip can have a tightening means such that with the wound strip wrapped around a pipe joint, and the containment strip wrapped around the wound strip, both can be tightened onto the pipe ends at the position of the joint. Once fusion has taken place, the wound strip and the containment strip are welded together onto the pipe ends to create a sealed joint in the form of a hoop of high strength.

Abstract: A fuel tank connector A for connecting a fuel tank B and a pipe C in communicating fashion includes a gas barrier member 10 made of a synthetic resin and having a gas barrier property. The gas barrier member includes a tubular portion 11 and a flanged portion 12 provided on a peripheral side of the tubular portion 11 and having a greater side than an opening Ba of the fuel tank B. The gas barrier member 10 is made of polybutylene terephthalate, polyphenylene sulfide, a liquid crystal polymer, aliphatic polyketone, aromatic polyamide, a blended polymer of an ethylene-vinyl alcohol copolymer and high-density polyethylene, a blended polymer of polyamide and polyethylene, a blended polymer of polyamide and high-density polyethylene, or polyethylene terephthalate.

Abstract: The invention relates to a joint assembly for connecting together fiberglass cylindrical pipe and duct sections up to about one hundred and twenry inches in diameter. An internal tubular slip collar fits into opposing sections joining the sectionend to end. An external tubular slip collar is mounted over the joined sections encircling their exterior surfaces. A non-volatile epoxy adhesive secures the mating surfaces forming a double adhesive sealed and three level joint.

Abstract: A thermally activated joining apparatus is provided for reversibly joining piping components of a fluid management system. The joining apparatus includes a thermally activated sealant layers for securing the components together in a leakage free manner. A thermal conductor includes a ring shaped contact portion disposed between the layers for transferring heat from one or more heating elements to the sealant layers. After the seal in place, the components can later be disconnected by supplying heat from the heating element or elements through the thermal conductor to the sealant layers to cause breaking of the seal and thereby enable separation of components.

Abstract: A structural assembly device and method for securing together a pair of surfaces of two fusible materials wherein an electrically conductive thermal element is located between the surfaces which will melt, without substantially degrading, when heated. When the thermal element is heated, it is elevated to a temperature sufficient to melt the first and second elements and then is allowed to cool such that the first and second elements are joined to the thermal element and may be joined to each other as well.

Abstract: A clamp of a thermally weldable material for a pipe of a thermally weldable material has two segments surrounding the pipe in a position of use of the clamp. The segments have heating mats of heatable electrical conduits integrated into inner surfaces of the segments. Each segment has two border edges facing one another in the position of use and clamped to one another by fastening elements. A first border edge of each segment has at least one segment flap projecting past the first border edge, and the second border edge has at least one pocket recessed relative to the second border edge. Segment flaps and pockets are complementary to the segment flaps and pockets of the opposed segment in the position of use. The heating mats have projecting flaps integrated into the area of the segment flaps and gaps in the area of the pockets.

Abstract: The present invention relates to pipes for the transmission and/or distribution of combustible gases, and liquefied gases, comprising a polyethylene layer and a polyamide inside and/or outside layer. These pipes may advantageously be connected together by adhesively bonded sleeves and thus form medium-pressure and low-pressure gas distribution and transmission networks or else they may be installed inside already existing metal pipes.

Abstract: A piping system that includes a plurality of pipe made of thermoplastic material, a coupling and an arrangement for securing the pipe to the coupling. The coupling is configured so that either a fusable seal or mechanical seal can be used with the coupling to connect the pipe to the coupling. Preferably, the pipe and coupling are made of thermoplastic material.

Abstract: The molding of the present invention has a continuous conducting path from an inner to an outer surface, comprising:

Abstract: An improved coupler and method for fusing profile wall thermoplastic pipe in a manner to form a substantially flush joint are disclosed. The improved coupler is preferably configured to be inserted between the inner and outer walls of each of the pipes being joined. The improved coupler preferably has a radial thickness that is less than the radial dimension of the gap or channel that is formed between the inner and outer walls of the pipes being joined and is preferably configured and adapted to have an annular interference fit with one of either the inner or outer walls of such pipe ends. Electrofusion is preferably used to heat-fuse the improved coupler to each of the pipes to create a strong, leak-proof joint between the two pipes.