Abstract: A connector assembly 8 may include a connector 10 having flow channel 11 defined therein. One end of the flow channel may engagingly receive a tubular conduit 1. A checker 30 may be coupled to the connector 10. The connection checker 30 may engagingly receive a bent portion 1b of the tubular conduit 1 and ensure a proper connecting condition between the connector 10 and the tubular conduit 1. The connection checker 30 also may prevent the connector 10 from rotating relative to the tubular conduit 1. A holder 20 may detachably and pivotally couple the connection checker 30 to the connector 10.

Abstract: An apparatus for sensing one or more physical characteristics of a fluid flowing in a fluid line, in one embodiment having an isolator block mounted onto a fluid line and in another embodiment, having an adapter plate coupled with isolator plate mounted onto a fluid line.

Abstract: A method and apparatus for monitoring a pipeline expansion joint, in particular the conditions of a pressure-balanced expansion joint. A sensor is positioned so as to sense one or more physical characteristics of a pipeline fluid flow. A signal generated by the sensor(s) is received by a suitably configured electronic controller. The controller, in turn, is connected to a flow control valve, that is movable between at least an “off” or “no-flow” position, and a flow permitting position, connecting a source of compressible medium and the volume confined between the two (or more) balancing bellows of a pressure-balanced expansion joint. An accumulator may also be provided, that may be connectable via the flow control valve, to the confined volume. The controller will be operably configured to cause the valve to be moved, in response to signals received from the sensor(s) that correspond to stored numerical data in the controller that represent different potential operating conditions.

Abstract: A fitting or a mounting part, particularly for the connection with a tube-shaped component, comprises an end section, which can be pressed together for establishing a connection. At the end section, a ring-shaped elevation is arranged in which a sealing ring is disposed. According to the invention, a bulge is provided on the elevation. By means of the bulge, a space is formed between the sealing ring and the wall of the end section, such that a fluid can flow between the tube-shaped components. Only by pressing together this leaky point, will a sealed-off connection arrangement be established.

Abstract: An adapter and coupler assembly has two externally threaded adapters, one left-hand threaded and the other right-hand threaded, and an internally threaded coupler, one end left-hand threaded, the other end right-hand threaded. The coupler threadedly engages the two adapters simultaneously, tightening on both by rotating in one direction, providing a fluid-tight seal. Each adapter has the other end barbed for connection to hose. The coupler and the two adapters each have an external annular flange which is perforated to receive seizing wire or wire ties to prevent the components from unthreading. The coupler has a multi-sided barrel at its center, and the adapters have a multi-sided nut portion, to provide purchase by a wrench-type tool. Each component may also have a mark indicating the starting point of the thread, to facilitate engagement of the components. The assembly is especially useful in fluid-carrying systems of boats, recreational vehicles, and campers.

Abstract: The present invention provides a positive gapping device for socket welded fittings. The positive gapping device comprises a socket fitting having a recessed area on at least one end for receiving a pipe section that is engageable with the recessed area of the socket fitting. It further includes a gapping means disposed on one of a surface of the recessed area of the socket fitting facing an end of such pipe section and an end of such pipe section for engagement with such socket fitting. The gapping means providing a space between the socket fitting and such pipe section for reducing residual stresses that result from a welding operation.

Abstract: A connector clip integrally comprises a holder portion and a C-shaped clamp on one longitudinal end portion of the holder portion. The holder portion is mounted to a length from a connector to a curved portion of a pipe. The C-shaped clamp clips a tube connected to a tube connecting portion of the connector. The holder portion comprises a holding portion to hold a length from a tubular holder portion of the connector to an annular projection of the pipe therein, a first receiving portion formed on an opposite longitudinal side from the holding portion to receive a straight pipe portion of the pipe, and a second receiving portion formed on an opposite longitudinal side from the first receiving portion to receive a curved portion of the pipe.

Abstract: A detachable coupling includes a housing having wall, an end that has an inner wall, and a receiving space that has an opening in the end. The opening and the receiving space receives a tubular insertion part that has a retaining rib. An indicating part is removably mounted to the end of the receiving housing and includes a support ring and a lever. The lever has a free end and a inner end and is pivotally mounted to the support ring and extends into the receiving space. A support projection is positioned on the inner end of the lever and contacts the inner wall. Insertion of the tubular insertion part causes the retaining rib to contact the free end of the lever and results in the pivoting of the lever. Pivoting of the lever disengages the support projection from the inner wall and dismounts the indicating part from the housing.

Abstract: A coupling arrangement connects two elements with each other. The coupling arrangement includes a plug element and a bushing element which are configured in such a manner that they can be plugged together and locked in position by means of an expandable retaining ring. An axially movable release arrangement cooperates with the retaining ring in order to release the locking mechanism. The coupling arrangement is characterized in that the release arrangement (41) comprises a release sleeve (43), which can be closed with a cover (51) on its side facing away from the bushing element (5), and that a blocking device (55) is used to prevent an inadvertent release of the coupling.

Abstract: A tubing connector for synthetic or composite tubing includes an integral crimp ring. The crimp ring permitting the tubing connector to be rotated in the tubing after the crimp ring is crimped. The integral crimp ring simplifies and facilitates installation of the tubing connector and ensures accurate crimping for more consistent results and fewer leaky connections. A reaming tool enlarges and bevels the open end of the tubing to facilitate the insertion of the tubing connector into the tubing. The reaming tool has a guide screw so that the open end of the tubing is automatically drawn towards cutters on the tool when the guide screw is rotated in the tubing. The advantage is a perfect bevel and an accurate expansion with very little effort.

Abstract: A fluid coupling including coded and non-coded embodiments and a method for their use. The coded embodiment allows connection of such lines while preventing the inadvertent connection of mismatched lines in a system where there are matched and mismatched delivery and supply lines. Both embodiments of the coupling include axially movable first and second coupling members and a radially operating latch. The coupling members are releasably slideably, axially interfitted with their fluid passageways in communication, and the latch moves radially of the passageways to secure the couplings when they are interfitted. In the coded embodiment, key coding elements on the coded coupling members are movable into matched interengagement when the supply and delivery lines are matched but are precluded from moving into matched interengagement when the lines are mismatched.

Abstract: An intrinsic gauging device for a ferrule type tube fitting of the type having a coupling nut, a coupling body and at least one ferrule, includes a precisely formed marking on the coupling body that is visually perceptible when the coupling is in a finger tight position, and that is covered or visually imperceptible or otherwise has a predetermined relationship with the coupling nut when the fitting has been initially pulled-up. In a preferred form, the marking is realized as a precision groove or recess machined into a surface of the coupling body. The groove can be made more easily visually perceptible such as by roughening or knurling the surface, or coloring the surface, for example. The groove defines an edge at a precise position that corresponds to a predetermined axial displacement of the nut relative to the body for initial pull-up.

Abstract: An elbow terminator has a socket in which an electrical probe is disposed. The terminator is insertable onto an electrical bushing such that a tongue of the bushing is received in the socket of the terminator, and the probe of the terminator is electrically coupled to a contact sleeve disposed within the tongue. A latching mechanism produces positive latching between the tongue and socket when the tongue has been inserted to a predescribed depth within the socket. In order to enable an operator to visually observe that the tongue has been inserted to the prescribed depth, the bushing carries a color band which becomes completely disposed (invisible) in the socket when positive latching occurs. Alternatively, the bushing can be provided with gauge tabs which become aligned with a witness line formed on the terminator when positive latching occurs.

Abstract: A one-touch joint for a flexible tube. A tapered surface is formed on the inner circumference of a fastening ring, and a ring-shaped retainer is positioned between the tapered surface and a seal member. When the flexible tube is inserted into the retainer, projections in the retainer are pushed open elastically by peak sections of a corrugated tube, and when a peak section has passed, the projections engage with a valley section of the corrugated tube. The joint and flexible tube can be coupled in a one-touch operation, simply by inserting the flexible tube. Moreover, excellent sealing properties and detachment prevention properties are obtained between the joint and the flexible tube.

Abstract: A pipe joint provided with a pipe joint main body having an insertion cylinder portion inserted to an end portion of a pipe to be connected, a seal member attached to a peripheral groove on the insertion cylinder portion, a clamp ring with a slit for fastening the end portion of the pipe outserted to the insertion cylinder portion with elastic fastening force, and a diameter-extension piece detachably held at the slit as to extend the clamp ring resisting the elastic force of the clamp ring and detached by contact with a forth end of the pipe.

Abstract: A connector for connecting large tubulars of the type used in oil well tubing, casing and the like, without resorting to welding, to form a pipe string for use in drilling. The connector comprises a pin and box threaded connection having guiding surfaces integral with the pin and box members to facilitate the threaded connection of large tubulars. Alignment indicators may be used to provide that initial thread contact is near 360° around the circumference of the connector to provide a more even distribution of the initial contact forces on the threads rather than substantially all force acting on a smaller area of thread. This alignment also speeds the makeup of the pipe. A thread factor is provided with a desired axial length and radial length to avoid deformation of the threads. The tubular alignment using alignment indicators, centralizing effect of guidance surfaces, and thread factor may work in combination to improve the reliability, durability, and speed of making the connection.

Abstract: A connector assembly 8 may include a connector 10 having flow channel 11 defined therein. One end of the flow channel may engagingly receive a tubular conduit 1. A checker 30 may be coupled to the connector 10. The connection checker 30 may engagingly receive a bent portion 1b of the tubular conduit 1 and ensure a proper connecting condition between the connector 10 and the tubular conduit 1. The connection checker 30 also may prevent the connector 10 from rotating relative to the tubular conduit 1. A holder 20 may detachably and pivotally couple the connection checker 30 to the connector 10.

Abstract: A junction for connecting first and second adjacent sections in a guideway carrying pressurized fluid comprises female end portions on a first section, male end portions on a second section partially received within the female end portions, and a vessel. The vessel comprises a plenum bounded at one end by a piston. The plenum is in flow communication with a pressure source.

Abstract: A checking device 60 includes a C-shaped member 61 seated on the end face 33 of a retainer 30, a ring member 62 inserted into the retainer 30 and a pair of connecting members 63 connecting the C-shaped member 61 and the ring member 62. Each of the connecting members 63 has a weak portion 64, such as a V-notch. After the spool 42 has advanced beyond the pawls 32, the weak portion 64 is broken by a second-tube-inserting force exerted on the connecting members 63 via the spool 42 and the ring member 62 on which the spool 42 is seated.

Abstract: An elongated clear fluid orifice device which includes a plurality of different exterior widths for accommodating the mounting of different sized hoses thereon while having a constant interior width. The device may be used in any liquid cooled engine having heated fluid flowing therethrough. The device is best made pressure resistant and high temperature resistant polycarbonate material such as EMS Grliamid TR-55 (clear nylon) compound and having an interior fluid tube with a cylindrical center section having a predetermined, constant interior width. The exterior tube levels have a raised ridge at each level to assist in securing a clamp to hold the hose in place at each level.

Abstract: A leak testing device includes a generally cylindrical sealing gasket which defines a recess therein. The gasket includes first and second end portions for receiving the respective ends of two adjacent conduits. A shoulder portion extends from the gasket. A diaphragm member is positioned in the gasket. A hole is provided in the diaphragm member which can be selectively opened or closed by a valve operably connected to the diaphragm member to thereby permit or restrict the flow of a fluid between the two conduits. A coupling for clamping the leak testing device about one or two conduits includes a generally cylindrical member having a central axis and including a plurality of sections. The sections are interconnected to one another by at least two hinge members in a manner that two sections have free end points to be releasably fastened together.

Abstract: A telescopic pipe having an inner pipe; an outer pipe complementarily connected with the inner pipe; and a positioning portion disposed between the inner and the outer pipes, for adjusting a length of the telescopic pipe by extending or contracting the telescopic pipe in an manner of telescopic movement, and an extendible suction pipe of a vacuum cleaner using the telescopic pipe. By forming the inner and the outer pipe at least partially with a transparent material that permits light therethrough, a user can see inner structure therethrough, and check for foreign substances, or a breakage or mal-operation of the inner structure, as a predictive inspection or for a repairing purpose.

Abstract: A fluid coupling includes various features. One feature is a disconnect tool that may expand a lock ring from engagement with a lock shoulder to permit the male half and female half to be separated. Another feature is to utilize geometry and structure whereby a leak would occur to indicate the condition of wear within the coupling while the coupling halves remain mechanically coupled. A further feature is to provide connection verification structure to assure that a complete connection of the male and female halves has been made. A still further feature is to provide an anti-rotational sleeve which would selectively prevent and permit relative rotation between the male half and the female half.

Abstract: A pipe joint provided with a pipe joint main body having an insertion cylinder portion inserted to an end portion of a pipe to be connected, a seal member attached to a peripheral groove on the insertion cylinder portion, a clamp ring with a slit for fastening the end portion of the pipe outserted to the insertion cylinder portion with elastic fastening force, and a diameter-extension piece detachably held at the slit as to extend the clamp ring resisting the elastic force of the clamp ring and detached by contact with a forth end of the pipe.

Abstract: A system for preferable use in gravel packing is disclosed which includes a plurality of transport tubes which are mounted outside of gravel pack screens. The multiplicity of shunt tubes cover a particular zone so that the tubes have a varying length to deposit gravel at different portions of the zone. The tops of the tubes are preferably sealed until ready for use and activated by applied pressure. In the preferred embodiment, rupture discs are found at the tops of each of the tubes, set for different pressures so as to open up the transport tubes to the lower most portion of a particular zone and later in sequence to the higher-most portion. The transport tubes are affixed to each section of pipe and are made up when two sections of pipe are made up to alignment marks. When the marks are aligned, the transport tube segments from each pipe section are in an aligned and sealed relation while the tool joint is properly torqued.

Abstract: The torque confirmation fitting is used for coupling one section of tubing to another and includes a fitting body, a fitting nut, and a torque confirmation portion. The fitting body has a nose section that supports an end of one of the sections of tubing. The torque confirmation portion has a collar portion and one or more prongs. The fitting nut is operably joinable to the fitting body and engageable with the torque confirmation portion. To operate, the non-supported end of the tubing is inserted through the torque confirmation portion and the fitting nut. The fitting nut is then joined to the fitting body and in doing so engages the torque confirmation portion. The continued joining of the fitting nut to the fitting body causes the prong of the torque confirmation portion to provide a visual indication that the fitting nut has been sufficiently, tightly joined to the fitting body.

Abstract: A clampless coupling which attaches a hose to a nipple without need of a clamp at the end of the hose to ensure sealing, including a connector and a nipple of a fluid system component. The connector is sealingly pre-connected at one end with a hose; the opposite end is in the form of a sleeve. The sleeve features a notch at its forward end, a boss on a resilient lock arm, and an O-ring seal. The nipple has a pocket depressionally formed on its outside nipple surface and an alignment tab. In operation, a user slides the sleeve over the nipple by pressing the connector toward the near end of the nipple. As the sleeve slides over the nipple, the tab is received by the notch to align the connector with the nipple, the boss drops abuttably into the pocket, and the O-ring seal sealingly compresses between the nipple and the connector. A seal assurance feature reveals improper connection when a pressure test is undertaken.

Abstract: A connection device includes a first connecting device and a second connecting device, which are interconnectible for the purpose of transferring an aseptic fluid. The first connecting device includes an injection needle and a protecting sleeve which has an orifice that can be punctured and which at least partially surrounds the needle and is displaceable relative thereto. The second connecting device includes a rubber-like part, which is penetratable by the needle and resealable when the needle is withdrawn.

Abstract: A method of assembling pipe joints in a pipe string allows the circumferential orientation of a first pipe in the pipe string to be determined relative to a second pipe in the pipe string. Each pipe joint has a coupling member and at least one pin member, the pin member being threadingly connected to the coupling member to create the pipe joint. Threads are created for the pin member and the coupling member of each joint, and each pin member and coupling member is marked with an alignment mark. The threads for each pin member are created so that they are identical to the threads on the other pin members in the pipe string. This is done by gaging the overall rotational capacity of each pin member with a coupling marking gage and adjusting a thread depth as needed. The threads for each coupling member are created so that they are identical to the threads on other coupling members in the pipe string.

Abstract: According to the present invention, there is provided a connector laid within a manhole wall for connecting cable-protecting pipes, including a body formed with a passage which said pipes can be inserted into, and a fixing member and a coupling member formed on both ends of said body, respectively, to be coupled and fixed each other, wherein said fixing member includes a first fixing protrusion and a first fixing groove formed on an outer surface of said body, respectively, to be located at the same surface as an end surface of said body and a second fixing protrusion and a second fixing groove formed on the outer surface of said body, respectively, to be located apart from the end surface of said body by a thickness of said first fixing protrusion and said first fixing groove. The end of said body formed with said fixing member is provided with a cover for preventing extraneous substance from invading inside of said body.

Abstract: A filter bag (200) and connector cartridge are used for collection of physiological fluids. The bag (200) includes an internal filter (206) and two seals (218, 220) on the perimeter. An inner seal (218) bonds the outer sheets (202, 204) of the bag and the filter, while the outer seal (220) bonds only the two outer sheets (202, 204) and acts as a safety seal. The bag includes a verification element that cooperates with a verification connector to ensure that the bag is properly attached to the fluid supply line before a fluid pump is enabled.

Abstract: A coupling for connecting conveyances, so as to allow the flow of commodities from one conveyance to another through the coupling. The coupling includes first and second coupling heads suitable for engagement with each other, and suitable for connection to conveyances. The coupling includes rotary retaining means for retaining the coupling heads in engagement with one another, and latching means for retaining the coupling heads in engagement with one another, whereby the rotary retaining means and the latching means must be simultaneously released to release the coupling heads. When the coupling is engaged, it produces an audible noise. The coupling is adaptable for conveying fluids, electrical power, optical signals, and other commodities. The coupling is adaptable for connection with pipes, hoses, wires, cables, appliances, supply tanks, and other conveyances.

Abstract: A synthetic resin-made fastening-limiting device employed for limiting a fastening force of a fastening member in case of fastening a connection portion between a pipe receiving port of the joint and a pipe by means of the fastening member. In the fastening-limiting device, an appropriate sealing property of the pipe connection portion and a screw amount of the fastening member required in trying to preventing the pipe from slipping off can be surely determined. Furthermore, the operator can recognize easily the appropriate screw amount of the fastening member by a sound and a touch. This fastening-limiting device has a ring portion fittable onto the pipe receiving port of the joint A and a protrusion disposed on the ring portion. On a side of one end in an axial direction of the ring portion, a first abutting portion is formed. On a side of the other end in an axial direction of the ring portion, a second abutting portion is formed.

Abstract: A pipe fitting includes a slider disposed in an insertion hole of a main body so as to be axially moved and includes a pressed portion which a falling-off preventing flange of a pipe abuts so that the slider is pressed axially when the pipe is inserted into the insertion hole. A fitting checker includes a pair of spreading legs having respective claws, the fitting checker being detachably attached to the main body so that the legs hold the main body. The claws engage the body and the slider so that the fitting checker is not allowed to be detached from the body when the legs are closed. The legs are spread so as to release the claws from engagement with the body and the slider so that the fitting checker is allowed to be detached from the body. Releasing protrusions are formed to protrude from inside portions of the legs of the fitting checker, the releasing protrusions being pressed so that the legs are elastically deformed in respective opening directions.

Abstract: A system for collection of blood during surgery includes an interlock that requires conduits supplying collected blood to a bag to be properly connected before the system is operated. The interlock includes a source of electromagnetic energy that illuminates connectors to determine whether they are connected. In a preferred embodiment, the connector is a Luer connector with a cylindrical portion that redirects the electromagnetic energy when the connector is in place.

Abstract: A drill pipe assembly having an elongate tubular pipe section with a first end and a second end, a first threaded tool joint having an outer surface and being attached to the first end of the pipe section, a second threaded tool joint having an outer surface and being attached to the second end of the pipe section, one of the first and second tool joints having at least one radially outwardly facing annular groove formed in the outer surface thereof and a ring of elastomeric material received in the groove, the ring having a radially inner surface and a radially outer surface, the ring preferably having an index signifying a characteristic of the drill pipe.

Abstract: In an apparatus for connecting tubular members together by cold forging a plurality of rollers are carried on a shaft which includes a tapered portion cooperating with the rollers to force the rollers radially outwardly to forge the tubular member into the end portion of a surrounding tubular member. The forging apparatus is provided with a gear mechanism which incrementally rotates the rollers upon completion of each reciprocal pass so that substantially all of the internal surface of the tubular member is contacted by the rollers to forge the tubular member into the end portion of the surrounding tubular member.

Abstract: A joint comprising a main seal, a secondary seal and an external pressure test port providing access to a cavity between the main seal and the secondary seal wherein the integrity of the main seal can be tested in its in-service direction by applying pressure to the cavity via the pressure test port such that the cavity is pressurised and the main seal is tested. Following testing of the main seal, the secondary seal may become redundant during normal use of the joint. In some embodiments, however, the integrity of the main seal can be retested at any time due to the reusability of the secondary seal.

Abstract: An intrinsic gauging device for a ferrule type tube fitting of the type having a coupling nut, a coupling body and at least one ferrule, includes a precisely formed marking on the coupling body that is visually perceptible when the coupling is in a finger tight position, and that is covered or visually imperceptible or otherwise has a predetermined relationship with the coupling nut when the fitting has been initially pulled-up. In a preferred form, the marking is realized as a precision groove or recess machined into a surface of the coupling body. The groove can be made more easily visually perceptible such as by roughening or knurling the surface, or coloring the surface, for example. The groove defines an edge at a precise position that corresponds to a predetermined axial displacement of the nut relative to the body for initial pull-up.

Abstract: A threaded pipe connection includes a box member, a pin member and a wear indicator for the connection. The pin member has internal threads and the box member has external threads. The internal threads of the box member each increase in width in one direction, while the external threads of the pin member increase in width in the other direction so that the complementary internal and external threads move into engagement upon make-up of the connection.

Abstract: A system for pressure testing the seals and fittings associated with at least one communication line passing through a well tool mandrel, each communication line housed within a communication line conduit defined through the well tool and sealingly engaged to each end of its corresponding communication line conduit by way of a fitting and the fittings also sealingly engaged to the communication line conduit. The system generally comprises a testing conduit, a testing passageway system, and a testing plug. The testing conduit is defined in the well tool mandrel. The testing passageway system is defined in the well tool mandrel and provides fluid communication between the testing conduit and the fittings and seals associated with each of the communication line conduits. The testing plug provides fluid communication between a pressure testing source and the testing passageway system.

Abstract: A pipe coupling with a cylindrical pipe, whose smooth end section can be inserted into a fitting that has at least one sleeve-like area extending in the longitudinal direction. At least one sealing ring is arranged between the pipe outer wall and the fitting inner wall. The fitting and the pipe are connected securely to each other by an externally applied pressing tool that acts in a plastically deforming manner on at least one radial plane of the sleeve-like area of the fitting as well as the pipe section located under this. A metal sleeve, which can be placed over the pipe ends by force, is arranged between the pipe outer wall and the fitting inner wall. The fixed axial extension of the metal sleeve surrounds the pipe starting from the pipe end face, and the length of the metal sleeve is selected so as to correspond to the required overlap between the pipe and the fitting.

Abstract: An improved tubing adapter or coupling apparatus, and combination of same with other fittings, is characterized by an adapter member having a first end including at least one exterior barb for engagement with tubing and a sleeve member operatively positioned around the adapter. In some systems, the tubing or hose may include a fitting at its other extremity, such as a hose end, an ell, or another coupling. The sleeve member of the coupling apparatus preferably includes one or more view ports. The ports can enable the user to visually confirm the tubing has been properly and completely assembled onto the adapter member, and, following initial assembly, to visually ascertain the position of the tubing on the adapter. The apparatus also preferably includes corresponding engagement detents on the adapter and sleeve member, for initial engagement of the retaining member with the adapter member prior to assembly with tubing.

Abstract: A fluid control assembly including a fluid control device having a main body, annular shoulders extending from opposite sides of the main body, and a tubular, relatively compressible liner extending out of opposite sides of the body through and axially beyond the shoulders, and at least one relatively non-compressible flange spacer positioned on each shoulder. The flange spacers extend from the main body of the fluid control device to between ends of the shoulders and ends of the liner, when the liner is in a non-compressed state. According to one embodiment, the fluid control assembly further includes bolts for securing the fluid control assembly to a pipe flange, and a liveload assembly positioned on each bolt.

Abstract: A metal pipe fitting and a method of fitting pipes together, the metal fitting having at least one mouth opening for receiving a mating length of metal pipe. The pipe fitting comprises a generally cylindrical sleeve having an exterior surface, interior surface, and a proximate end and a distal end. The proximate end forms at least one mouth opening for the fitting. The sleeve has a circumferential groove formed within the interior surface between the proximate and distal ends thereof and a seal ring located within the circumferential groove. There is at least one inspection divet which penetrates the exterior surface of the sleeve to the interior thereof to reveal the exterior of the mating length of metal pipe for verifying the proper insertion of the metal pipe.

Abstract: This invention relates to a coupling device to connect two tubular elements, preferably a hose with a tube, with one male coupling element (3) and one female coupling element (5) that are formed so that they can be inserted in one another and can be locked by means of an expandable split clip (33). An axially movable release device (35) interacts with the split clip to release the lock. The invention is characterized by the fact that the release device (35) has an indicator element which indicates a connection between the two coupling elements (3, 5).

Abstract: A valve assembly for an apparatus under pressure, includes a valve casing with a connecting pipe having formed therein a fluid passageway. A valve body is received in the valve casing and movable against a valve seat for sealing the fluid passageway and thereby separate a high-pressure zone from a low-pressure zone. Integrated in a handwheel of the valve body is a manometer which is constraint against rotation, when the handwheel is turned with respect to the manometer. The manometer is in communication with the high-pressure zone regardless whether the valve seat is closed or open.

Abstract: A coupling assembly comprising a female connector body, a male member, a retainer and a dust barrier. The female connector body defines a bore extending axially inward into the connector body from an entrance. A radial face is defined in the bore axially inward of the entrance. The male member is received within said bore. The male member is formed at the end of a tube and includes a projection extending radially from the tube. The retainer has at least two locking beams extending between the radially extending projection and the radial face to retain the male member in the bore. The locking beams defines a slot between the locking beams. The dust barrier is slidably mounted on the tube. The dust barrier has at least one extension insertable within the slot so as to prevent inadvertent radially inward movement of the locking beams. Wherein upon sliding the dust barrier toward the female connector body, the dust barrier encloses the bore so as to prevent foreign material from entering the coupling assembly.

Abstract: A conduit interlock assembly for being clamped to portions of a pair of conduits which portions are adjacent an end-to-end interconnection between the two conduits and which conduit interlock assembly is for surrounding a conduit fastener or fasteners fastening the conduits together in the end-to-end connection. The conduit interlock assembly includes a normally open switch for being closed upon the conduit interlock assembly being clamped to the conduits to provide an indication that the conduits are in the end-to-end interconnection and which switch is opened upon the conduit interlock assembly being unclamped from the conduits to provide an indication that the conduits possibly are not in the end-to-end interconnection.

Abstract: An oil nozzle structure for pneumatic tools is provided and mainly characterized in that an oil nozzle is directly mounted into a receiving space provided at an outer end of a handle portion of a pneumatic tool, and that a clear inspection window and a through oil port are provided on a wall of the handle portion of the pneumatic tool corresponding to the receiving space, such that oil may be directly supplied into the receiving space via the oil port and penetrate into the oil nozzle before being sent into the pneumatic tool by supplied air to lubricate internal components of the tool, and that oil level in the receiving space may be conveniently observed via the clear inspection window to timely replenish the receiving space with oil.