Abstract: A method of coupling a pipe length to a piping element can include arranging a gland over an end of the pipe length, the gland including a joint restraint assembly, the pipe length defining an outer pipe surface; arranging the end of the pipe length within a socket defined by the piping element; fastening the gland to the piping element; and activating the joint restraint assembly by hand to prevent removal of the pipe length from the socket.

Abstract: A modular tool anchor includes an anchor body positionable about a tubular. The anchor includes an anchor wedge for gripping against the tubular. A wedge drive screw engages a piston that biases the wedge into contact with the tubular as the wedge drive screw is tightened. The anchor also includes a compression seal positioned within the anchor body. A sealing flange abuts the compression seal. As seal compression screws are tightened, the sealing flange engages the compression seal and forces it against the tubular.

Abstract: Techniques for implementing a pipeline system including a pipe fitting, which includes a fitting shell that define a fitting bore and a tubing cavity around the fitting bore. The tubing cavity interfaces with pipe segment tubing to facilitate fluidly coupling the fitting bore to a pipe bore. The fitting shell includes a seal groove that is recessed into a fitting shell surface that facilitates defining the tubing cavity. The pipe fitting includes a belt seal having a multisided axial cross-section profile, in which the belt seal is to be disposed in the seal groove to implement a fitting seal in the pipe fitting that includes a protruding portion having a wedge-shaped axial cross-section profile that protrudes beyond the fitting shell surface into the tubing cavity to facilitate sealing a fluid conduit implemented in an annulus of the pipe segment tubing in the tubing cavity of the pipe fitting.

Abstract: An exhaust clamp may connect two exhaust components or conduits together in a leak tight manner while minimizing alignment issues during the assembly process. The clamp may include a split band having a clamping mechanism and a plurality of poka-yoke locking pins configured radially about the band. The poka-yoke locking mechanism may be configured to slidably engage a bead or ridge formed on the exhaust components to align the exhaust components during the assembly process an allow the operator to tighten the clamp about the exhaust components.

Abstract: A vibration damping connector system to connect between a vacuum chamber and a vacuum pump such that the vacuum pump is supported by the vibration damping connector system includes a first cylindrical member and a second cylindrical member that provide a flow passage through which gas can flow from the vacuum chamber to the vacuum pump. At least one sealing member is disposed intermediate the first and second cylindrical members to provide a gas seal and a securing system securely connect the first and second cylindrical members. At least one resilient member disposed intermediate the securing system and a cylindrical member so that when the at least one sealing member is compressed by a pressure reduction caused in use by operation of the vacuum pump, the at least one resilient member can expand to enable the securing system to maintain a secure connection.

Abstract: A pipe (12) coupling assembly (16, 116) includes a body (64, 120), a rib (65, 122), and teeth (56, 124). The body (64, 118) has an outer diameter and first and second inner diameter sections (68, 128, 70, 130). The first inner diameter section (68, 128) is wider than the second inner diameter section (70, 130). The rib (65, 122) extends around the first diameter section (68, 128) and projects radially inwardly therefrom. The teeth (56, 124) are situated within the second inner diameter section (70, 130) and project radially inwardly toward a central axis (38, 134) of the body (64, 120).

Abstract: An anti-rotation device for a pair of threaded components includes a pair of ratchet interfaces and a spring element. A first ratchet interface and the spring element are movably disposed within a first threaded component, and a second ratchet interface is disposed at a mating end of a second threaded component. During relative rotation of the pair of threaded components, the ratchet interfaces engage, providing a resistance to the threaded components loosening that is greater than a resistance that the ratchet interfaces provide to the threaded components tightening. The anti-rotation device engages automatically upon relative rotation of the threaded components, and not as a separate step occurring after rotation. Additionally, the anti-rotation device may be especially useful in systems where various types of movement can cause the threaded components to loosen, and where visual access to the anti-rotation device is impeded.

Abstract: An apparatus and method for re-rounding a distorted end (e.g., oval-shaped) of a pipe for insertion into a mechanical joint fitting or pipe bell have a circular diameter. The apparatus involves two separate semi-circular members having jack bolt assemblies evenly distributed in each. The two ends of each of the semi-circular members have extensions that can be releasably coupled to join to the two members to form a circular re-rounding tool. A first semi-circular member is positioned on the maximum diameter side of the distorted pipe and the other semi-circular member is placed on the opposite side of the distorted pipe and extensions joined. With an equal number of jack bolt assemblies in each member, corresponding jack bolt assemblies in the two members are diametrically aligned forming pairs. To re-round the distorted end, pairs of these jack bolt assemblies are tightened in a “star sequence” to re-round the distorted end.

Abstract: A universal device for replacing worn or lacerated parts of connecting conduits between components of climate control or cooling or hydraulic systems for the connection between components of new climate control or cooling or hydraulic systems, comprising a metal sleeve provided at an end of a coupling for pipes joined to it in a sealed fashion, designed to be fitted and clamped on a stretch of rigid pipe joined to a connector for connection of the connecting conduit to a component, and at the other end of a fitting for connection with a flexible hose designed to replace the worn or lacerated connecting conduit. The sleeve can be rectilinear or curved with angle of approximately 45° or approximately 90°. The previous device is prepared in a kit according to different sizes.

Abstract: A conduit fitting of the type having first and second threaded fitting components and at least one conduit gripping device, further includes a stroke limiting member that allows the fitting to be pulled up by applying a predetermined torque. In one embodiment, the stroke limiting member may be a non-integral torque collar. Alternatively, the fitting may also be pulled up by turns or may have an integral torque collar. In still another embodiment, a stroke limiting member is provided that may be used to enable a fitting that is designed to be pulled up by turns to also be pulled up by torque. In other embodiments, the non-integral torque collar may be installed onto one of the fitting components, and then deformed so as to prevent or make it more difficult to remove the torque collar after installation onto the fitting component.

Abstract: A quick-connect plumbing device for exemplary use in connection of an appliance, such as a water heater, to supply line of a dwelling, among other uses. Preferably, the connection creates a dielectric coupling between the appliance and supply line to disconnect electrical communication between the supply line and appliance. The device typically includes a length of rigid conduit structured to form a sweat solder connection to a cooperating solderable plumbing element at a first end, and to form a threaded connection to a cooperating threaded plumbing element at an opposite second end, with a resilient seal element being carried at the second end. The threaded connection can be formed by an internally-threaded nut axially affixed to the conduit to permit nut rotation to axially compress the seal element between the conduit and the threaded plumbing element.

Abstract: A ferrule for a metal tube fitting includes an annular body having a generally cylindrical radially interior wall extending through the center of the ferrule. An outer radial wall extends from the ferrule front end to a rearward flange portion of the annular body. The outer radial wall has: a first tapered portion extending from the ferrule front end with an increasing radial dimension towards the rearward flange portion, the first tapered portion extending to a crown portion, the crown portion including a convex surface that tapers radially inwardly towards the rearward flange portion.

Abstract: A coupling device includes a coupling body and a collar adapted to engage a tubular member in a fluid tight seal. The coupling device includes axially spaced front and back ferrules which engage during mounting to provide a plurality of seals intermediate the ferrules and the tubular member as well as the coupling body. The back ferrule includes a generally cylindrical or tubular wall that is elastically/plastically deformed to an arcuate shape to enhance the maintenance of the seals.

Abstract: A wellhead coupling and method for coupling and sealing an annulus formed between overlapping ends of an outer pipe and an inner pipe. A clamp housing grips the inner pipe, forms a horizontal landing base for the outer pipe, and forms circumferential ports aligned with the annulus. A seal ring and upper metal ring are located in the annulus, the seal ring being formed with ports to align with ports of the clamp housing, and the upper metal ring being formed with threaded holes to align with ports of the seal ring and the clamp housing. Threaded seal engaging members extend through the aligned ports for threaded connection in the threaded holes of the upper metal ring. A seal energizing member located within or below the clamp housing pulls downwardly on the threaded seal engaging members to energize the seal ring into sealing relationship in the annulus.

Abstract: A ferrule for a metal tube fitting includes an annular body having a generally cylindrical radially interior wall extending through the center of the ferrule. An outer radial wall extends from the ferrule front end to a rearward flange portion of the annular body. The outer radial wall has: a first tapered portion extending from the ferrule front end with an increasing radial dimension towards the rearward flange portion, the first tapered portion extending to a crown portion, the crown portion including a convex surface that tapers radially inwardly towards the rearward flange portion.

Abstract: A quick connector coupling for a fluid line includes a female connector body defining a through bore, a tubular male member with a raised annular upset, and a retainer demountably coupled to the connector body. A seal assembly provides a fluid tight seal between the tube and body bore. A separate outer spacer is secured to the body to receive axial load of the seal assembly. The body defines spaced arcuate locking ledges having axially inward facing radial locking surfaces. The outer spacer is a continuous annular element includes an integral radial ring defining an annular axially outward facing radial abutment surface in radial abutting relation to the locking surfaces of said body ledges.

Abstract: An anti-expansion and anti-seismic pipe fitting. The pipe fitting includes a body into which end portions of plural pipes are inserted. The body has a receiving jaw formed on the inner circumferential surface of an end portion, into which each of the pipe is inserted such that an inner diameter of the body is enlarged. A packing is arranged on the receiving jaw. A cap is coupled to the end portion of the body such that the packing and the pressurizing member are mounted inside the cap. Buffering means are included for absorbing expansion and contraction of the pipe. The pipe fitting can absorb deformation due to the expansion or contraction of the pipes. Moreover, because all of the pipes and the pipe fitting have the same inner diameter, the fluid flowing inside the pipes maintains uniform pressure, and hence, the fluid can flow smoothly inside the pipes.

Abstract: A sealing structure for a cylindrical body has an O-ring holder in which a planar O-ring that provides a seal in the planar direction and a radial O-ring that provides a seal in the axial line direction of the cylindrical body are incorporated in the crossing direction provided at both end parts of the cylindrical body; a pressing means for pressing the O-ring holder in the axial line direction of the cylindrical body via a pressing lid; the O-ring holder is pressed against a tube sheet of the fluid chamber via the pressing lid by the pressing means to press the planar O-ring onto the tube sheet, whereby a fluid tight seal is provided between the fluid chamber and the outside; and the radial O-ring is pressed onto the outer periphery of the cylindrical body to provide a fluid tight seal between the fluid passage and the fluid chamber.

Abstract: An annular sealing material seals a pipe joint between a socket and a spigot. The sealing material includes a bulb part which is composed of a first bulb, a second bulb located closer to the inner side of the socket than the first bulb, and a narrow part present between the first and second bulbs. The first bulb is pressed against the inner circumferential surface of the socket. The second bulb is pressed against the outer peripheral surface of the spigot. The second bulb is inclined towards the pipe center from the first bulb in a natural state before it is provided between the socket and the spigot. The inner diameter of the second bulb is smaller than the outer diameter of the spigot in the natural state. The second bulb is extensible in the pipe diameter direction due to elastic deformation of the narrow part.

Abstract: A seal material and a washer are fitted on a piping main body of a first piping, a bead portion is inserted into a bead portion insertion hole and the seal material and the washer are inserted into a seal material insertion hole. In this state, a female screw is threaded onto a male screw until a piping side stopper and a nut side stopper are abutted, and the nut member is joined to a piping side tube portion. In a state where the piping side stopper and the nut side stopper are abutted, the seal material is compressed in an axial direction via the washer by the small diameter tube portion and the seal material pressure-contact surface. The seal material is elastically joined to an outer circumferential surface of the piping main body and an inner circumferential surface of the bead portion insertion hole in a radial direction.

Abstract: A ferrule for a metal tube fitting includes an annular body having a generally cylindrical radially interior wall extending through the center of the ferrule. An outer radial wall extends from the ferrule front end to a rearward flange portion of the annular body. The outer radial wall has: a first tapered portion extending from the ferrule front end with an increasing radial dimension towards the rearward flange portion, the first tapered portion extending to a crown portion, the crown portion including a convex surface that tapers radially inwardly towards the rearward flange portion.

Abstract: A coupling device includes a coupling body and a collar adapted to engage a tubular member in a permanent swaged connection. The coupling device includes axially spaced front and back ferrules which engage during swaging to provide a plurality of seals intermediate the ferrules and the tubular member as well as the coupling body. The back ferrule includes a central region having a generally cylindrical wall that is elastically/plastically deformed to a corrugated tube-like shape during swaging to enhance the maintenance of the seals. A portable installation tool for swaging the coupling body and collar to the tubular member is hydraulically actuated.

Abstract: A fitting has an external body and a caliper element, lodged in an axial cavity of the body and able to block the end of a tube inside the cavity. The caliper element can be moved from a rearward position blocking the tube, to a forward position releasing the tube, and includes a flanged rim protruding from an end of the body. A security ring is joined to the end of the body from which the flanged rim protrudes. The ring has an outer portion which extend axially from the end and can resist at least an axial force exerted manually, and an innermost portion which is flexible so that when subjected to an axial force exerted manually, it can move axially and to touch the flanged rim. The inner and outer portions are reciprocally positioned so pressure can be exerted on the innermost portion only with a special tool.

Abstract: High localized loading, galling, and high torque forces have been generally eliminated or greatly reduced in a two ferrule tube fitting assembly through suitable modification of the rear ferrule so as to redirect the reaction forces acting between the front ferrule and the drive nut. The rear ferrule has a cylindrical interior wall that closely surrounds the tube end and is provided on the interior cylindrical wall with a circumferentially continuous radial recess that is located between the nose and rear wall of the rear ferrule. The rear ferrule also has a radially external wall that is substantially conical and additionally shaped to extend radially outward toward the enlarged diameter portion or flange of the rear ferrule. The rear ferrule further includes a contoured face on the rear driven surface of the ferrule that engages the drive surface of the drive nut.

Abstract: A pipe coupler for coupling pipe of dissimilar composition having a substantially cylindrical housing with a stub end and a bell end, the housing having a primarily plastic composition with an embedded anchor ring at the bell end wherein the anchor ring includes a plurality of threaded radial holes and a set of gripping bolts with ends that physically engage an outer surface of a pipe inserted into the bell end of the housing and a plurality of threaded axial holes off-set from the radial holes with a compressor ring, sized to slip over the end of a pipe inserted into the bell end of the housing, the compressor ring compressing a seal when a series of axial bolts engaging the anchor ring are tightened.

Abstract: The diameter of a front end opening section (20-1) extending rearward over a predetermined length from a front end opening of a male member reception hole (20) is larger than a diameter of a male member reception section (20-2) of the male member reception hole that follows the front end opening section. The backup ring (18) is allowed to engage an inner wall surface (20-3) of a front end opening section (20-1) as a backup ring (18) is pressed radially outward from an annular groove (24) by a seal ring (16) that is deformed by engagement with the inner wall surface of the male member reception hole (20) when a male coupling member (12) begins to be inserted into the male member reception hole (20), which prevents the backup ring (18) from coming out, in a radially outward manner, from the annular groove (24).

Abstract: The diameter of a front end opening section (20-1) extending rearward over a predetermined length from a front end opening of a male member reception hole (20) is larger than a diameter of a male member reception section (20-2) of the male member reception hole that follows the front end opening section. The backup ring (18) is allowed to engage an inner wall surface (20-3) of a front end opening section (20-1) as a backup ring (18) is pressed radially outward from an annular groove (24) by a seal ring (16) that is deformed by engagement with the inner wall surface of the male member reception hole (20) when a male coupling member (12) begins to be inserted into the male member reception hole (20), which prevents the backup ring (18) from coming out, in a radially outward manner, from the annular groove (24).

Abstract: A pipe connector for connecting a first pipe and a second pipe includes a socket attached to an end of the first pipe and a plug attached to an end of the second pipe, wherein the plug is inserted into the socket. An inner periphery of the socket is provided with a seal ring for sealing an interval between the inner periphery of the socket and an outer periphery of the plug in an airtight manner and a hold ring for restricting movement of the seal ring in an axial direction. The hold ring includes a groove in a ring-like shape for constituting a burr storing space at an outer periphery thereof and is welded to the inner periphery of the socket by ultrasonic welding.

Abstract: High localized loading, galling, and high torque forces have been generally eliminated or greatly reduced in a two ferrule tube fitting assembly through suitable modification of the rear ferrule so as to redirect the reaction forces acting between the front ferrule and the drive nut. The rear ferrule has a cylindrical interior wall that closely surrounds the tube end and is provided on the interior cylindrical wall with a circumferentially continuous radial recess that is located between the nose and rear wall of the rear ferrule. The rear ferrule also has a radially external wall that is substantially conical and additionally shaped to extend radially outward toward the enlarged diameter portion or flange of the rear ferrule. The rear ferrule further includes a contoured face on the rear driven surface of the ferrule that engages the drive surface of the drive nut.

Abstract: A pipe union with extension for interconnecting a first length and a second length of coaxial pipe may include a first annular pipe member attachable to the first length of pipe. The first annular pipe member may incorporate a circumferential flange having a shoulder. The first annular pipe member may comprise a front face which faces the first length of pipe, and a rear face which faces in a direction of the second length of pipe. The pipe union may also comprise a fastening member incorporating an inwardly extending flange with a central passageway adapted to fit around the first annular pipe member. The inwardly extending flange may be adapted to abut the shoulder as the fastening member is fitted over the first annular pipe member. The fastening member may comprise thread means formed on an inner surface of the fastening member.

Abstract: A coupling assembly for inserting into and coupling with the end of an open pipe, such as a cleanout pipe used in plumbing systems and wherein the coupling assembly may be used as a plug. The coupling assembly includes a collar secured around a medial portion of the cylindrical body of reduced diameter. The collar is driven downward by threadable advancement of a plurality of screws for squeezing a seal against the collar and a downwardly and outwardly projecting shoulder which causes the seal to expand outward to seal against the inner wall of the pipe. The screws simultaneously bite into the inner wall of the pipe to help secure the coupling assembly in place.

Abstract: High localized loading, galling, and high torque forces have been generally eliminated or greatly reduced in a two ferrule tube fitting assembly through suitable modification of the rear ferrule so as to redirect the reaction forces acting between the front ferrule and the drive nut. The rear ferrule has a cylindrical interior wall that closely surrounds the tube end and is provided on the interior cylindrical wall with a circumferentially continuous radial recess that is located between the nose and rear wall of the rear ferrule. The rear ferrule also has a radially external wall that is substantially conical and additionally shaped to extend radially outward toward the enlarged diameter portion or flange of the rear ferrule. The rear ferrule further includes a contoured face on the rear driven surface of the ferrule that engages the drive surface of the drive nut.

Abstract: A resinous tube has opposite ends into one of which a mating member is fitted and with which the mating member is connected, and includes a sealing ring, a fastening cap, and a clamp. The sealing ring is disposed on an inner peripheral surface of the opposite end, and contacts elastically with an outer peripheral surface of the mating member. The fastening cap is disposed on the inner peripheral surface of the opposite end on an outer end side thereof with respect to the sealing ring, and contacts elastically with the outer peripheral surface of the mating member. The clamp is disposed on an outer peripheral surface of the opposite end, which is provided with the fastening cap on the inner peripheral surface, and tightens the fastening cap. The resinous tube exhibits good sealing and fastening abilities, requires less component parts, and can be connected with any mating members.

Abstract: A fitting for the connection of a tubing end. The fitting includes a body having a bore with an internally-threaded opening which extends to a seating surface, and a front ferrule which is receivable coaxially over the tubing end. An externally-threaded nut is receivable coaxially over the outer diameter of the tubing end to be positionable thereon rearwardly of the front ferrule such that, with the tubing end and front ferrule being inserted through the bore opening, the nut is threadably engageable with the body urging an outer surface of the ferrule into a canning engagement against the body seating surface. The axial length of the seating surface is provided to extend substantially the entire length of the ferrule outer surface so as to constrain the radial outward expansion of the ferrule rearward end.

Abstract: The pipe coupling device includes a sleeve having an end adapted for receiving a pipe. The end has a sealing cavity defined between the outer surface of the pipe and the interior surface of the sleeve. A sealing gasket is adapted for arrangement within the sealing cavity of the sleeve for compression into sealing engagement with the pipe. A gripper ring is adapted for encircling the pipe and has a radial inner surface having a plurality of gripping members for gripping the pipe upon coaxial compression of the gripper ring. An intermediate ring is adapted for encircling the pipe between the sealing gasket and the gripper ring, and has a restraining member adapted for restraining the gripper ring to prevent the gripping members from gripping the pipe until after the sealing gasket is compressed into sealing engagement with the pipe.

Abstract: High localized loading, galling, and high torque forces have been generally eliminated or greatly reduced in a two ferrule tube fitting assembly through suitable modification of the rear ferrule so as to redirect the reaction forces acting between the front ferrule and the drive nut. The rear ferrule has a cylindrical interior wall that closely surrounds the tube end and is provided on the interior cylindrical wall with a circumferentially continuous radial recess that is located between the nose and rear wall of the rear ferrule. The rear ferrule also has a radially external wall that is substantially conical and additionally shaped to extend radially outward toward the enlarged diameter portion or flange of the rear ferrule. The rear ferrule further includes a contoured face on the rear driven surface of the ferrule that engages the drive surface of the drive nut.

Abstract: High localized loading, galling, and high torque forces have been generally eliminated or greatly reduced in a two ferrule tube fitting assembly through suitable modification of the rear ferrule so as to redirect the reaction forces acting between the front ferrule and the drive nut. The rear ferrule has a cylindrical interior wall that closely surrounds the tube end and is provided on the interior cylindrical wall with a circumferentially continuous radial recess that is located between the nose and rear wall of the rear ferrule. The rear ferrule also has a radially external wall that is substantially conical and additionally shaped to extend radially outward toward the enlarged diameter portion or flange of the rear ferrule. The rear ferrule further includes a contoured face on the rear driven surface of the ferrule that engages the drive surface of the drive nut.

Abstract: A joint for joining the ends of two pipes (12, 14) has a socket (or box) on the end of one pipe (14) into which the end (30) of the other pipe is inserted. The part (36) of the socket which surrounds the inserted pipe has an external tapered surface (38). A correspondingly tapered sleeve (42) surrounds the socket and can be moved axially to apply a compressive force to the taper on the socket which is thus compressed inward against the inserted pipe end to frictionally grip the inserted pipe end.

Abstract: A tube fitting provides a sealed flow connection between an open-ended duct that extends along the longitudinal axis of a tube and an open-ended duct of a base element, for liquid separation technology. The tube fitting has a ring-shaped thrust piece with a receptacle for the tube and a ring-shaped, spring-elastic compensating element with receptacle for the tube. The tube fitting further comprises a fastening element that can be fastened tightly to the base element. When sealed, the base element, the thrust piece, the compensating element and the tube can be braced by means of the fastening element under elastic deformation of the compensating element. A spring serves as a compensating element, wherein the spring and the connection parts arranged within the spring excursion range are coordinated to each other such that a leaky connection caused by elastic deformaton or material settling of parts braced together is excluded.

Abstract: A mechanically energized annular packoff seal cartridge for metal-to-metal sealing with substantially concentrically arranged tubular members, such as the tubular wellhead housing and well casing of an oil and gas well. A tubular pressure responsive energizing mandrel having downwardly converging frusto-conical seal actuating surfaces is of a dimension for entry into the annulus between the wellhead seal bore and the rough outer surface of the well casing. Elastomer seals are carried by the energizing mandrel and establish sealing of the energizing mandrel with the wellhead housing and well casing A pair of soft metal seal rings are carried by the seal cartridge and are forced radially into metal-to-metal sealing with the wellhead housing and the rough outer surface of the well casing respectively by the double tapered seal actuating surfaces responsive to pressure induced downward force on the energizing mandrel.

Abstract: A sealed coupling system for flexible hose, such as corrugated hose, includes a termination fitting that mounts the sealed system to a static structure, such as a wall or the like. The system uses threaded connections to fix the hose to the fitting and to the structure and thus does not require welding, brazing or the like and has the main components thereof located on one side of the structure.

Abstract: A fluid assembly is disclosed. The fluid assembly includes a first conduit having a generally annular first body and a first longitudinal channel extending therethrough and a second conduit having a generally annular second body disposed over a portion of the first conduit and having a second longitudinal channel in communication with the first longitudinal channel. The second conduit further includes a retainer fixture. The assembly also includes a seal assembly including an annular seal having first and second seal members, an o-ring disposed within the seal generally against the first and second members, and a retainer biasing the o-ring toward the first and second seal members. The seal assembly is disposed between the first fuel conduit and the second fuel conduit such that the first seal member engages the first conduit and the second seal member engages the second conduit. The retainer engages the retainer fixture, and the seal assembly releasably connects the first conduit and the second conduit.

Abstract: A tube joint comprises: a pushing ring provided at its outer periphery with a projection and fitted to an outer periphery of one end of a joint tube; a tube or a joint body provided at is side opposed to the pushing ring with a projection opposed to the projection of the pushing ring, the tube or the joint body having a receiving portion which is widened toward the pushing ring and the tube or the joint body being fitted to an outer periphery of the joint tube with a peripheral gap left therebetween; a fastening tool capable of moving the pushing ring in a direction of the tube or the joint body; a packing provided between inner and outer side of the tube or the joint body and the joint tube, and fitted through the receiving portion by its own resilient deformation by operation of the fastening tool; and a spacer inserted between the pushing ring and the tube or the joint body to limit a distance between the pushing ring and the tube or the joint body to a constant value.

Abstract: The present invention relates to plastic tube joints to transport warm water or tap water for air conditioning use, especially so-called simple-action tube joints.

Abstract: A miniature connector for introducing microliter quantities of solutions into microfabricated fluidic devices. The fluidic connector, for example, joins standard high pressure liquid chromatography (HPLC) tubing to 1 mm diameter holes in silicon or glass, enabling ml-sized volumes of sample solutions to be merged with &mgr;l-sized devices. The connector has many features, including ease of connect and disconnect; a small footprint which enables numerous connectors to be located in a small area; low dead volume; helium leak-tight; and tubing does not twist during connection. Thus the connector enables easy and effective change of microfluidic devices and introduction of different solutions in the devices.

Abstract: A quick connector of the ball-lock type includes a socket member, a plug member and a slidable sleeve which are specifically designed to permit manufacture by deep drawing of a sheet metal. The socket member and the plug member are each shaped in the form of a stepped tube and the plug member is inserted into the socket member in a telescoping fashion to form an annular chamber therebetween. An O-ring and a backup ring are mounted within the annular chamber by inserting them into the bore of the socket member.

Abstract: A tube joint comprises: a pushing ring provided at its outer periphery with a projection and fitted to an outer periphery of one end of a joint tube; a tube or a joint body provided at is side opposed to the pushing ring with a projection opposed to the projection of the pushing ring, the tube or the joint body having a receiving portion which is widened toward the pushing ring and the tube or the joint body being fitted to an outer periphery of the joint tube with a peripheral gap left therebetween; a fastening tool capable of moving the pushing ring in a direction of the tube or the joint body; a packing provided between inner and outer side of the tube or the joint body and the joint tube, and fitted through the receiving portion by its own resilient deformation by operation of the fastening tool; and a spacer inserted between the pushing ring and the tube or the joint body to limit a distance between the pushing ring and the tube or the joint body to a constant value.

Abstract: A threaded connection for easily deformable thin-walled pipes (20) has a connecting member (1) with a cylindrical receiving bore (5) accommodating the pipe (20) and an outer thread (7). A nut (8) is provided with an inner thread (10) which is threaded onto the outer thread (7). The nut (8) has a through-bore (11) for the pipe (20) and a conical bore (13) which widens towards the connecting member (1). The pipe (20), at a distance from its end face (21), has a bulge (23) which is held in a clamped-in condition between the conical bore (13) and a conical supporting face (18) of a separate supporting ring (14). To limit the tightening movement, the supporting ring (14) has a stop face (19) against which the conical bore (13) comes to rest when the nut (8) is tightened. A holding face (17) on the supporting ring (14) is supported against the end face (3) of the connecting member (1).

Abstract: A structure of a pipeline connector is mainly composed of a socket, a restriction ring, a cover ring, a fixed inner pipe, a fixed outer pipe and a stopping ring. The socket is composed of a cone shaped opening and secured with an inner pipe. The opening of the socket comprises a restriction ring and a locknut, with the fixed inner pipe secured within the socket by means of the locknut, the fixed inner pipe and the inner pipe of the fixed inner pipe been inserted through the fixed outer pipe and sleeved with a stopping ring at the end of the inner pipe so as to allow a smooth sliding of the fixed inner pipe and the fixed outer pipe, relatively.

Abstract: High localized loading, galling, and high torque forces have been generally eliminated or greatly reduced in a two ferrule tube fitting assembly through suitable modification of the rear ferrule so as to redirect the reaction forces acting between the front ferrule and the drive nut. The rear ferrule has a cylindrical interior wall that closely surrounds the tube end and is provided on the interior cylindrical wall with a circumferentially continuous radial recess that is located between the nose and rear wall of the rear ferrule. The rear ferrule also has a radially external wall that is substantially conical and additionally shaped to extend radially outward toward the enlarged diameter portion or flange of the rear ferrule. The rear ferrule further includes a contoured face on the rear driven surface of the ferrule that engages the drive surface of the drive nut.