Abstract: A method and apparatus for creating a fluid tight seal between a capillary column and a connector. The method and apparatus are easy to employ and do not require the use of screws, ferrules, or additional tools. The method can be used for any capillary tubing as well as for megabore and microbore columns and tubing. In the method, a length of auxiliary tubing is placed over the outside of tubing requiring a fluid tight seal, such as a capillary column. After the capillary column is inserted into the connector, the length of auxiliary tubing is press-fit into the connector creating a secondary fluid tight seal. The auxiliary tubing provides additional mechanical stability during mechanical vibration and dramatically increases the tensile force required to compromise the fluid seal. This method can be used for many types of chromatography including gas chromatography and liquid chromatography. A connector assembly and fluid tight seal assembly are also disclosed.

Abstract: A micromachined coupler for coupling a capillary having a first size to an orifice having a shape and a second size, has a body which has a shape conforming the shape of the cavity into which the body must fit. A through hole is defined through the body. The through hole has a size conforming to the first size of the capillary. The capillary is disposable into the through hole so that the capillary is communicated to the orifice without the first and second sizes necessarily being the same. The cavity and the body have conforming slanting surfaces, and in particular the cavity and the body define truncated pyramidal shapes. The cavity and the body each have a truncated pyramidal shape. The pyramidal shape may be square, triangular, or conical. A method of fabricating the micromachined coupler is achieved either by micromaching or micromolding.

Abstract: A hard pipe has an annular stop projection formed about its portion press fitted in a flexible hose to make a hose connecting structure. The projection has a cross sectional contour including a gentle outward slope extending from the front end of the projection to a first corner, which makes the angle of the subsequent second corner gentle, and a rear face at the second corner extending inwardly toward the longitudinal axis of the pipe at right angles thereto. The hose connecting structure has high levels of pull-out strength and sealing properties without having the hose damaged by the projection on the pipe.

Abstract: A system and method for installing plumbing spouts, such as shower heads and tub spouts, includes providing a stub out which protrudes out of a wall at shower height. A specialized adapter is then slid onto the protruding stub out until the adapter abuts the wall. The adapter is internally threaded with an integral ferrule, and may also be equipped with a one-way gripper ring and an O-ring to sealingly secure the spout to the stub out. The stub out, if closed, is then cut off outside the adapter and a standard shower arm or nipple for a tub spout is threaded into the adapter. A threaded end of the shower arm or nipple engages the ferrule and compresses it against the stub out creating a seal therebetween. When installing a shower head, an escutcheon plate is adapted to be slid over the shower arm to engage peripheral fingers of the adapter to secure the escutcheon in place. A shower head is then threaded onto the shower arm to complete the installation.

Abstract: A connecting adapter configured to mate on opposite ends with a standard adapter shank and a standard welding electrode of the resistance type. The connecting adapter is a hollow body with male and female connecting portions. The male portion, integral with the female portion, is sized to accommodate the standard welding electrode thereon. The female portion is sized to accommodate a taper portion of the shank within the hollow body and has exterior cross-sectional dimensions similar to those of the shank. The connecting adapter being formed of a wear-resistant conductive martial is replaced only periodically, thus reducing greatly the wear on the more expensive standard adapter shank.

Abstract: A luer-type connector comprising a male-component formed with a locking nozzle having a coaxially extending nozzle lumen, and a locking collar rotatable over said nozzle. The locking collar has a rear end and is formed with an internal thread for screw coupling with a corresponding thread of a radially extending annular lug of a mating female-component of the connector. The nozzle is formed with a ridge having a radially extending abutting wall surface facing the rear end of the locking collar and a peripheral surface extending forward from the abutting wall. An annular rim behind the abutting wall has a first diameter. An annular notch intermediate the abutting wall and the annular rim has a second diameter lesser than that of the first diameter. The locking collar is formed with a radially extending wall surface engageable with the abutting wall surface of the ridge. And an annular bulge behind the radial wall surface has a third diameter lesser than the first diameter.

Abstract: A tubing connector has a body, a tubular member, a compression member, a cap and a coupling. The body has a bore extending through it and a body portion of the tubular member is positioned in the bore of the body with an extension portion of the tubular member extending from the bore of the body. The compression member is fitted in the cap and also has a bore extending through it. The cap is provided with an opening and an orifice which are aligned with the bore of the compression member to define a continuous passageway through the cap. The coupling connectively engages the body with the cap. The tubing connector also optionally includes a coupling element which enables connective engagement of the body with an adjoining member. To use the tubing connector, the flexible tube is threaded through the continuous passageway of the cap and fitted over the extension portion of the tubular member. The cap and the body are then connectively engaged around the extension portion.

Abstract: A compression element located inside an enclosed compressor is disclosed for receiving a connection pipe from outside the compressor. The compressor has an opening one in one of its walls. The compression element has a bore running through it. An inlet end of the compression element is joined to the wall of the compressor at the opening. The inlet end of said bore is tapered in the form of a curved shape that spreads smoothly toward the opening. A guide pipe has one of its ends installed into the opening from outside the compressor. A connection pipe having a cooper plated exterior surface is inserted through the guide pipe, press-fitted into the inlet end of the compression element and joined to the compression element. The connection pipe has another end connected to a suction pipe for circulating a refrigerant within the compressor via the compression element.

Abstract: A coupling device can connect two cryogenic fluid conduits in fluid communication without creating a temperature change. The coupling device includes a fluid flow path extending therethrough having a substantially constant cross-sectional area. The coupling device is designed to be easy to connect and disconnect and to provide a secure connection, in particular at low temperature.

Abstract: A radioisotope production target and a method for fabricating a radioisotope production target is provided, wherein the target comprises an inner cylinder, a foil of fissionable material circumferentially contacting the outer surface of the inner cylinder, and an outer hollow cylinder adapted to receive the substantially foil-covered inner cylinder and compress tightly against the foil to provide good mechanical contact therewith.

Abstract: A method and apparatus are disclosed for a thermoplastic profile wall pipe joint or weld assembly without the use of a coupler to provide for a leak free pipe joint with substantially flush interior and exterior surfaces. The pipe joint consists of configuring the two pipe ends to be joined by removing substantially all of a first wall and the helical rib from the first pipe end, removing a portion of the helical rib from the second pipe end, coupling the pipe ends together and heating the weld assembly couple to fusion weld the pipe ends together. An electrical resistance element is provided for and placed within the pipe joint to provide the required heat. Also disclosed is the use of a thermoplastic sheet with the electrical resistance element to allow the end margins of the electrical resistance element to overlap without shorting by separating the end margins radially from one another and to allow for a more uniform fusion welded pipe joint.

Abstract: A tube connection apparatus for use with larger diameter flexible tubing particularly for hazardous material removal comprising an outer tapered sleeve and an inner tapered sleeve that is sized to snugly fit within the outer tapered sleeve and to engage the flexible tubing therebetween. A retainer ring is provided to secure a second flexible tube to the outer tapered sleeve and a transportable wall section which holds the sleeves may be positioned in a passageway of a building and tubing from spaces on either side of the passageway be connected.

Abstract: Fluid connector for connecting a first fluid-bearing conduit in a capillary tube to a second fluid-bearing conduit in a receiver. An internal fitting assembly includes an internal fitting body, a body cavity for receiving a ferrule and a self-compensating nut, the ferrule and self-compensating nut being locatable on the capillary tube, and an internal ferrule seat located on a portion of the body cavity, against which a tapered portion of the ferrule is applied to so as to obtain a first fluid-tight seal between the capillary tube, the ferrule, and the ferrule seat.

Abstract: A tube connection apparatus for use with larger diameter flexible tubing particularly for hazardous material removal comprising an outer tapered sleeve and an inner tapered sleeve that is sized to snugly fit within the outer tapered sleeve and to engage the flexible tubing therebetween. A retainer ring is provided to secure a second flexible tube to the outer tapered sleeve and a transportable wall section which holds the sleeves may be positioned in a passageway of a building and tubing from spaces on either side of the passageway be connected.

Abstract: A spanner joint assembly for connecting between an upper riser and a conventional dual bore tubing hanger in a subsea well. The spanner joint assembly includes upper and lower spanner joint portions connected to each other through an emergency disconnect portion. The upper spanner joint portion has a longitudinal production bore and a longitudinal annulus. The lower spanner joint portion has a longitudinal production bore with a production bore valve and a longitudinal nonconcentric annulus access bore. The emergency disconnect portion includes an upper mandrel connected to the upper spanner joint portion and a lower mandrel connected to the lower spanner joint portion. A releasable mechanical connector includes a retaining groove in the lower mandrel and a collet connected to the upper mandrel. The collet has a latching portion extending beyond the upper mandrel which is adapted to be received in the retaining groove.

Abstract: A unitary molded crosslinked polyethylene tubular connector and method for forming the connector with various end configurations (e.g., molded, belled) is described). The process combines the ease of thermoplastic processing combined with the desirable physical properties of a thermoset. The connector is suitable as a replacement for copper tubes with associated fittings as well as polybutylene tubing.

Abstract: To provide both a high-pressure metal piping capable of preventing the cavitation or the like or the internal fatigue destruction, as might otherwise occur at a joint head at a branch tube due to the repeated internal pressure of a fluid, and capable of eliminating a fear of corrosion even if a corrosive high-pressure fuel is employed, and a common rail to which the piping is jointed. At a joint portion of a thick steel tube having a relatively small diameter, a joint head is formed of a radially enlarged portion having a larger diameter than that of the thick steel tube, and the radially enlarged portion is formed on its inner circumference into a tapered pressure seat which is diverging outward for a receiving seat of the common rail. Preferably, a thin inner tube, as made of a corrosive metal, is fitted on the inner circumference of the thick steel tube all over the length and is terminated at the tapered pressure seat of the thick steel tube.

Abstract: A female part of a Luer connector is provided with at least one abutment 10 at or adjacent the distal end of its interior for limiting movement of a mating male part within the female part. The abutment 10 extends around a portion only of the periphery of the interior of the female part thereby minimizing the chances of air traps and allowing the free flow of fluid through the Luer connector.

Abstract: A thin-walled steel tubing is to be constructed with a double cone coupling nipple for the tight screwed connection with a counterpart by way of a cap screw in a crack-resistant manner. The steel tubing is thin-walled and constructed of high-strength steel. With respect to the remaining tubing area, the nipple has at least partially at least approximately a double wall thickness. The steel tubing is not soft annealed at any point including the whole area of the nipple. With respect to the material, the contact surfaces of the nipple are harder than the surfaces of the countercontact. The cone angle of the sealing surface of the nipple measures over 100.degree..

Abstract: A branch pipe joint for a high pressure fluid, comprising: a joint body having a conduit therein on its axis and a branch hole formed in its circumferential wall and having a pressure receiving seat formed on the circumferential face thereof and opened to the outside; a branch pipe having a conduit to communicate with the conduit of said joint body and including a joint head formed at the end thereof and forming a pressure seat so that said branch pipe is engaged with said joint body by bringing the pressure seat thereof into abutment against the pressure receiving seat of said joint body; a joint portion made integral with or separate from said joint body; and a nut assembled in advance in said branch pipe and fastened into said joint portion against the pressure of said joint head thereby to joint said branch pipe to said main pipe.

Abstract: A luer-type connector comprising a male-component formed with a locking nozzle having a co-axially extending lumen, and a locking collar rotatable over the nozzle and having a rear end, and formed with an internal thread for screw coupling with a radially extending annular lug of a mating female-component of the luer-type connector. The nozzle is formed with ridge having a rear, radially extending abutting wall surface terminating at an acute edge. The locking collar is formed with a ridge-engaging portion consisting of a first wall surface rearwardly tapering, and a second wall surface radially extending and adapted for engagement with the abutting wall surface of the ridge, whereby the first wall surface is adapted for frictional displacement along the acute edge and the second wall surface prevents further forward axial displacement of the locking collar with respect to the nozzle.

Abstract: A method and apparatus for manufacturing a fluid coupling employs a rod having a bore at one end into which a plurality of plastic tubes may be inserted. The rod is sized to pass through a lumen of a Luer connector and an elastomeric washer placed within a surface of the Luer connector. The rod and plastic tubes are pulled through the Luer connector and washer. After removal of the rod and back tapping of the tubes flush with the end of the connector, a packing material is introduced into the remote end of the connector to fix the tubes in place. The washer then acts as a dam to prevent a flow of packing material from reaching the distal end of the connector. The apparatus employs tube locator blocks which are sandwiched around the rod for guiding the tubes into place in the end of the rod. A piston and cylinder arrangement is used to pull the rod downwardly through these blocks.

Abstract: A pipe connector includes a tubular pin member having a generally frusto-conical outer peripheral surface and a tubular box member having a generally frusto-conical inner peripheral surface corresponding to the frusto-conical outer peripheral surface of the pin member and overlies the frusto-conical surface of the pin member when the members are fully engaged together. The members include with inter-engageable annular projections and grooves on the said peripheral surfaces for axially locking the members together when they are fully engaged together, the projections and grooves being spaced apart along the surfaces. Means are provided for supplying hydraulic fluid under pressure between the overlying parts of the surfaces of the members when fully engaged together to expand the box member and/or contract the pin member to bring the projections out of engagement with the corresponding grooves and permit the members to be disengaged.

Abstract: A pipe joint has a body having a through hole defined axially therein as a fluid passage, a nut threaded on the joint body thereby connecting the pipe to the joint body, and a sleeve held against a bottom of a hole defined in the joint body by an annular step surface and having a bulging portion slanting at a predetermined angle. The nut has a radially inner pipe presser which is bent and flexed into a shape complementary to the bulging portion when the nut is progressively threaded over the joint body, for pressing an end of the pipe against the sleeve under a resilient force tending to return the radially inner pipe presser to an original shape thereof.

Abstract: A common rail is provided which is simple in structure and capable of connecting a piping component to a thick wall pipe thereof in a highly sealed and light weighted manner. In a common rail adapted to connect a pipe component to at least one end of a thick wall pipe having a flow passage 1' therein for accumulating pressure of high pressure fuel so that high pressure fuel is supplied from a high-pressure pump and distribute-supplied to an injection nozzle, the end portion of the thick wall pipe 1 is reduced in diameter by drawing. A thread portion 1a is formed in an outer peripheral surface of the diameter-reduced end portion. A connecting end of the piping component 3 is connected to an end portion of the thick wall pipe 1 by screwing a fastening screw means 5, 5' to the thread portion 1a.

Abstract: A quick connect coupling having a self-contained releasable collet generally comprises a housing having an axial bore extending inwardly from an entrance. The axial bore includes a large diameter portion adjacent the entrance. A tube having a bead of relatively large diameter is insertable into the bore. A generally annular radially expandable collet disposed within the bore of the housing expands upon insertion of the tube into the housing and contracts onto the tube between the bead and the housing, thereby retaining the tube within the housing. The tube is selectably releasable from the housing by an annular pilot disposed within the housing having an inclined surface complementary to an inclined surface on the collet. Release members are provided to facilitate axial inward movement of the collet into the housing. The collet then rides up the inclined surface of the pilot, thereby radially expanding the collet and releasing the tube from the housing.

Abstract: A fluid flow connection comprising a threaded port for use with a nominal 74.degree. male conical tube fitting and pipe end connection is disclosed. The threaded port is made to have a truncated conical seal surface having an included angle that is slightly larger than the corresponding included angle of the seal surface of the male portion of the fluid flow connection.

Abstract: A unitary molded crosslinked polyethylene tubular connector and method for forming the connector with various end configurations (e.g., molded, belled) is described). The process combines the ease of thermoplastic processing combined with the desirable physical properties of a thermoset. The connector is suitable as a replacement for copper tubes with associated fittings as well as polybutylene tubing.

Abstract: A mechanical joint tube assembly and method of creating the same is disclosed for providing an improved fluid fitting assembly. A fitting having a primary tapered bore is forced onto a tube that has a larger diameter. The tube is radially contracted in certain portions and is radially expanded in other portions of the fitting in order to create a plurality of compression seals. A collar of the fitting is crimped around the bead that is formed in the tube in order to provide an additional compression seal and means for retaining the tube within the fitting. Alternative forms of the primary bore in the fitting includes a hexagonal shaped configuration, a splined shaped configuration and a slotted collar configuration for enhancing retention of the tube within the fitting. A unique method of manufacturing is used to make these tube fitting assemblies.

Abstract: A fluid fill apparatus for bleeding air from a fluid reservoir includes a fluid tank and a connecting member. The fluid tank has an inlet and an outlet, and the connecting member has a first and second end. The first end is connected to the fluid tank, and the second end is connected to the fluid reservoir. The connecting member also has a fluid passage from the first end to the second end. The first end has a first orifice therein which a user causes to selectively communicate with the outlet such that fluid flows into said fluid passage, and the second end has a second orifice such that fluid in the fluid passage flows into the reservoir.

Abstract: An adapter assembly is provided for fluid communication and mechanical connection between a catheter and a syringe. The adapter assembly includes a generally tubular nose having opposed proximal and distal ends. A wall is disposed at the distal end and includes an aperture dimensioned for receiving the catheter therethrough. A compressible plug is received in the open proximal end of the nose and seats against the wall. The plug includes an axial passage for receiving the catheter. Outer portions of the plug are tapered near the proximal end. The assembly further includes a hub having opposed proximal and distal ends. The proximal end of the hub includes luer projections for threaded engagement with a luer collar of a syringe. The distal end of the hub is threadedly engageable in the opened proximal end of the nose. Internal portions of the hub adjacent the distal ends are tapered and dimensioned to gradually compress the plug into fluid-tight engagement against the catheter without generating occlusion.

Abstract: A connecting mechanism for connecting at least one plastic pipeline to a mating opening in a unit part. The connecting mechanism has a housing with a plug-in section selectively connectable to a mating opening on the unit part. The housing has a receiver opening for plugging in a pipeline, and a retainer is arranged in the receiver opening to lock onto a pipeline plugged therein. The plug-in section of the housing has at least one radially elastic arm having a locking catch to clamp behind a surface of the unit part, thereby interconnecting the housing with the unit part. When a pipeline is inserted into the receiver opening of the housing, the pipeline coacts with the locking arm or arms to exclude a radial detaching movement of the locking arm, that otherwise would disengage the locking catches from the unit part.

Abstract: The joint according to the invention relates to a sealed connection between metal pipes used for producing petroleum tubings or casings. This joint comprises a sleeve fitted with two threaded housings suitable for receiving the male ends of two pipes. The end faces thereof come to bear one against the other inside the sleeve. An annular convex tapering zone near the end face of each pipe bears in a sealing manner against an annular concave tapering zone of the sleeve. Shoulder stops 16 ensure the centering of each male end.

Abstract: Pipe coupling system and method in which a tapered wall is formed on one of two tubular pipe members for press-fit engagement with a wall of the second pipe member, and the two pipe members are pressed together in an axial direction to bring the tapered wall and the other wall into direct press-fit engagement with each other. The two pipe members can, for example, be a length of copper water pipe and a copper pipe fitting, and in certain disclosed embodiments, the pipe members are drawn together by a tool having axially movable jaws which engage the pipe members and are driven together in the axial direction by an actuator and linkage which move in a perpendicular direction.

Abstract: A coupling in which work for fixing an inner pipe is facilitated, and in which airtightness is maintained such that oil leaks do not occur. A fixing member is fixed to a through-hole formed in an interior portion of an outer pipe. The inner pipe is supported by the fixing member. When a press-fit portion of the fixing member is press-fit into the through-hole, due to a taper surface, an axial center of the inner pipe is aligned with a center of the through-hole, and the press-fit portion fits tightly to an inner peripheral wall of the through-hole while plastically deforming the inner peripheral wall. A portion of the inner peripheral wall of the through-hole, which portion is plastically deformed by the press-fit portion, enters into an annular groove. A seat surface portion abuts and fits tightly to a surface at a peripheral edge of the through-hole. Due to the fixing member, the through-hole is in a completely airtight state.

Abstract: A tube connection apparatus for use with larger diameter flexible tubing particularly for hazardous material removal comprising an outer tapered sleeve and an inner tapered sleeve that is sized to snugly fit within the outer tapered sleeve and to engage the flexible tubing therebetween. A retainer ring is provided to secure a second flexible tube to the outer tapered sleeve and a transportable wall section which holds the sleeves may be positioned in a passageway of a building and tubing from spaces on either side of the passageway be connected.

Abstract: A connector for a tube and a port construction for sealingly and securely receiving the connector. The connector has a male luer comprising a locking hub and a cylindrical tubing port. The cylindrical tubing port receives the free end of the tube. A second piece is provided that envelops the male luer, comprising a elongate cylindrical housing having a interior surface. The male luer and the tube are snugly inserted within the interior surface of the second piece to form a unitary connector.The port receives the connector and has a housing having a first end and a second end and an open interior region defining first and second chambers and a housing axis. The first and second chambers are disposed within the first and second ends of the housing, respectively. A locking knob is movably mounted on the first end of the port apparatus and movable along the housing axis relative to the first end between first and second positions.

Abstract: An improved male luer connector assembly including a central elongated male luer connector tapering from a distal end to a locking collar disposed approximately at the mid-point of the connector. A recessed section is disposed between the first collar and a second collar. Locking teeth are disposed on a proximal face of the locking collar in spaced relation. A threaded lock nut is mountable on the male luer connector. An inner peripheral end wall of the lock nut surrounds the male luer connector and carries a ratchet at an inner end face thereof. In the connection of the male luer connector assembly to a complementary female threaded luer connector, the engaging teeth on the proximal face of the locking collar are drawn into engagement with the ratchet on the inner face of the lock nut to ensure and maintain a locking fluid-tight connection between said male luer connector assembly and the female luer connector.

Abstract: The invention provides a joint 80 for two steel pipes 50, 52 each containing a liner 54, 56 of polyethylene. The invention also provides an electrofusion fitting for joining the liners 54, 56; a method of making the fitting and a method of making the joint 80. The joint 80 consists of an electrofusion fitting having two frusto-conical outer end surfaces which match similar surfaces on the insides of the end portions of the liners 54, 56. Fusion welded joints are formed at the interfaces between the frusto-conical surfaces. A body of insulating material 66 is received in a central recess in the fitting and protects the fitting from the high temperature of the seam 70 between the steel pipes 50, 52. The frusto-conical surfaces make an angle of 10.degree. or less with the longitudinal axis of the fitting. A support body 14 of metal or of synthetic plastics material contained by the electrofusion fitting ensures that the fitting is adequately supported during electrofusion.

Abstract: A novel quick-disconnect coupling is disclosed comprising a tubular member and a sleeve member sealingly receiving the tubular member therein. The coupling members each attachable to a hose end provide quick connect and disconnect of the hoses to one another. The tubular member is generally conical in shape having a larger diameter at its distal end and a smaller diameter at its proximal end. The sleeve member includes a plurality of axially extending fingers which, after the members are joined, are forced radially inward against the converging conical surface of the tubular member by an encircling collar thereby securing the sleeve member to the tubular member until the collar is retracted.

Abstract: A joint structure for joining a branch member to a high pressure fuel rail which automatically aligns a spigot head of the branch member, if offset, upon tightening of a bolt and increases the rigidity of the spigot head to provide a sufficient degree of mechanical strength so that the spigot head can positively be "seated", and which insures connection between the branch member and the fuel rail if a fuel under substantially high pressure repeatedly flows over a prolonged period of time and if piping is subject to vibration and is free from leakage. In this joint structure, the branch member includes a spherical spigot end surface at its distal end, an annular flange axially spaced away from the spigot end surface, and a conical surface converging from the annular flange toward the spigot end surface.

Abstract: A fluid-tight joint formed by a pair of annular rings, each attached to the end of a tubular fluid-conducting conduit. The rings are similar, each having one side with a channel with a frusto-conical wall and the other side having a ridge with a frusto-conical wall receivable in the channel of a similarly-shaped ring. Threaded fastener means engage the two sealing rings to form a fluid-tight joint in the area of contact between the two frusto-conical walls.

Abstract: A luer-type adapter has a dual instead of a single set of engaging screw threads. A proximal and a distal screw thread on the hub engage proximal and distal screw threads on the collar of the connector to provide at least twice the engaging or sealing force between the tapered surfaces of the stem and hub which are forced together by rotating the collar relative to the hub to engage the two sets of threads. The diameters of the engaging distal screw threads have to be sufficiently great so that the proximal screw thread on the hub can pass under the distal screw thread on the collar in order to effect proximal as well as distal engagement. An O-ring mounted on an untapered distal segment of the stem engages an untapered inner hub surface to provide additional sealing force which is particularly useful where gas is being provided through the adapter.

Abstract: A female coupling element of the Luer-Lock type for haemodialysis medical equipment comprises an outer tubular body made of a relatively rigid moulded thermoplastic material, and an inner sleeve made of a relatively softer moulded thermoplastic material and axially fitted within the outer body. The outer body and the inner sleeve are freely rotatable relative to each other.

Abstract: A detachable column cartridge for a gas chromatograph is disclosed. The cartridge column contains analytical and reference columns, a heater and a thermocouple, and connects via detachable connectors to a base unit containing an injector, a detector and other components normally found in gas chromatographs. The cartridge arrangement permits a substitute column to be connected to the base unit easily, in the field, when different gases are to be separated and analyzed. Also included are specific connectors for detachably connecting the columns with capillary tubes in the base unit of the gas chromatograph.

Abstract: A capillary column connector assembly includes a pair of body members fabricated from a resilient, inert ceramic having high compressive strength. Each body member has an inwardly tapering longitudinal throughbore within which the end of a capillary column can be inserted by press-fitting. A split sleeve holds the two body members in mutually facing alignment with inner end surfaces in compressed mutual contact. The inner end surfaces are slightly radiussed in order to deform upon compression and provide a fluid-tight seal surrounding the junction between the inner ends of the longitudinal bores, thereby eliminating the need for any separate sealing gasket.A mechanical assembly comprising an inner spool, an outer housing, a spring, and a bearing-mounted support provide axial compression forces tending to urge the ceramic body members into mutual facing contact with the radiussed surfaces deformed.

Abstract: The present invention relates to an improved hydraulic coupling which forms contact seals to fluidly connect a tube to a tapered port by crimping (tube-to-port). The contact seal includes a metal-to-metal seal with a secondary elastomeric seal. A crimped collar of the port retains a compression ring in a metal-to-metal contact. Another embodiment of the invention provides a transverse fluid coupling for a tube with the port being part of the bolt/body assembly of a "banjo" coupling. The crimped collar of the present invention is removed from the contact seal so that flexural forces and vibration of the coupling can be better resisted. The port, tube, and compression ring define a pocket for the location of a sealing ring disposed in the pocket. The pocket has a cross-sectional area larger than the cross-sectional area of the sealing ring. The tube may include a lip having an outwardly facing tapered surface substantially complementary to the tapered surface of the port.

Abstract: A reduced resistance bead seal is integrally formed on a mounting surface of one of two matingly engageable members to form a leak-free seal between the two members despite any eccentricity or angular variances between the two members. In one embodiment, the reduced resistance bead is formed on an inner conical flange of an inverted flared end of a hollow fluid conduit. The bead may also be formed on the outer end flange of an ISO end flare. The bead presents a deformable surface as a fitting urges the flared end of the conduit into engagement with a conical seat in a receiver where eccentricity or angular variances exist between the flared end of the conduit and the conical seat. A unique method and a unique forming tool are used to form the reduced resistance bead in the flared end of the conduit simultaneously with the flaring of the end of the conduit.

Abstract: Quick joint for rapid, tight-seal connection of pipes, in which from the end of the female hollow body an internal flaring with decreasing cross-section extends, suitable for getting engaged, with interference, with a corresponding external counter-flaring provided on the male hollow body in the neary of the overhanging shoulder of the latter which, on its one side, cooperates with the sleeve of the joint and, on its other side, cooperates with said end of said female hollow body; from the end of said male hollow body furthermore a second external flaring with decreasing cross-section extends, suitable for getting engaged, with interference, with a counter-flaring provided inside the interior of said female hollow body in the nearby of an internal shoulder for said male body.Also preferred embodiments are disclosed.

Abstract: A unitary assembly of tubing and an end fitting. The end fitting includes a threaded fastener fitting having a tubular bore extending therethrough. A conical transition is coaxially provided to the bore at the thread/hex interface where the bore constricts. The end of the tubing is coaxially impacted, expanded and sized to an external configuration and dimension that achieves an interference fit relative to the tubular bore through the end fitting. The non-expanded end of the tubing is inserted into the larger of the two bores in the end fitting passed the conical transition and through the smaller bore until it experiences interference from the expansion. The interference is overcome by pressing the expansion into the bore in the end fitting until the expansion is completely seated into the end fitting. The expanded tube and end fitting is machined coaxially using a five step tool.