Abstract: An assembly includes a quick connect cartridge which is inserted into a port of a valve or manifold in a pneumatic system for coupling external fluid lines of the system to the valve or manifold. The components of the quick connect cartridge and the O-ring seal are mounted on the tubular shank of a plug. The plug is used as a shipping pin and is also used to install the components into a port of the valve or manifold. Normally, the plug is withdrawn from the port after the components are inserted in the port. If it is desired to keep the port closed after initial installation of the components, the plug may be retained in the port until it is time to connect the port. If it is desired to leave the port permanently closed, the plug remains in place. The plug can be an open plug allowing testing of the valve in which case a dust plug is provided for shipping puposes.

Abstract: A flexible coupling is provided for two relatively movable pipes, which coupling hasa) a bellows tube having transversely corrugated sidewalls which bellows terminates in two rounded nozzles, which nozzles insert into connecting pipes, (e.g. in the air bypass duct of a gas turbine engine) andb) means to seal each nozzle in each respective pipe such that upon relative axial and lateral displacement between connecting pipes, the bellows tube flexes to maintain the sealed juncture between it and the connecting pipes.

Abstract: A fluid conduit connector assembly includes a prepositioning carrier for mounting a connector assembly upon a first fluid conduit segment, a hose clamp portion attached to the prepositioning carrier for maintaining the hose clamp in position for engagement with a second fluid conduit segment, and an axially directed activation member for maintaining the hose clamp portion in a retracted configuration prior to engagement of the hose clamp portion with the second fluid conduit segment. The hose clamp portion is movable to a non-retracted configuration when the activation member is slidingly withdrawn in an axial direction from the hose clamp portion.

Abstract: A pipe coupling having mating pin and socket elements, each having pitched interlocking fins. The two elements are mated by slidingly engaging the two elements and then rotating them. An O-ring may be added to one or the other of the elements to create a more leak-tight seal between the two elements. Additionally, the pin and socket elements may each have saw tooth shaped teeth which interact as a locking means for the pipe coupling.

Abstract: A manifold for a front-discharge fluid end reciprocating pump. The manifold comprises tubular portions which are connected to ports on the pump by threaded engagement of a plurality of nuts. The manifold has a center portion and at least one branch portion which intersects the center portion. Another tubular portion having a ported end is in communication with the center and branch portions and provides an outlet for the manifold. At least one nut on the manifold is a standard nut having lugs extending therefrom adjacent to an outer surface of the nut. A special nut is used on at least one of the connections and has lugs extending adjacent to the inner surface thereof. The lugs on the special nut have a longitudinal thickness less than the nuts on the standard nut. In this way, the nuts may be engaged with closely adjacent ports on the pump without interference of the lugs on the nuts with one another.

Abstract: A quick connector comprises a tubular-shaped female member, a tubular-shaped male member, and an engager member which comprises a "C" ring-shaped and tapered stopper whose diameter can be increased in said annular-shaped concave, and which has the smaller diameter ends having the small diameter at the inner side of said female member and having the large diameter at the side of said opened flange to engage said engager projection, and which has the larger diameter ends having the diameter larger than that of said opened flange of said female member to face the inside end surface of said opened flange; a regulator which is installed in the axial direction to said stopper, and which is projected in the centrifugal directions than do the larger diameter ends of said stopper, and which is brought into contact with the inner peripheral surface of said annular-shaped concave to regulate the displacement in the radial direction of said stopper; and a linkage for connecting said stopper and said regulator.

Abstract: A release member for a quick-type connector includes an outer sleeve concentrically disposed about an inner sleeve and integrally joined to the inner sleeve at one end. A plurality of circumferentially spaced fingers are formed on the inner sleeve and extend axially from an opposite end of the inner sleeve. Radially outward extending projections are formed on the inner sleeve and engage an inward extending flange on a female connector part to retain the release member in the open end of a bore in the female connector part, with the outer sleeve slidably disposed over the tubular end portion of the female connector part. Engaging surfaces formed between the fingers on the inner sleeve engage deflectable legs on a retainer mounted in the bore of the female connector part when the release member is forcibly urged into the bore in the female connector part to deflect the legs radially outward so as to permit separation of a radially expanded flange on a male conduit from the female connector part.

Abstract: The invention relates to a pipe connection, particularly for composite pipes (2), with a supporting sleeve (4) with at least 6no connection region (3) and an assigned pressure sleeve (6), the supporting sleeve (4) being provided with a shoulder (10) and with main, ring-shaped beads (12), the pressure sleeve (6) embracing the pipe end that is on the connection region (3), the pressure sleeve (6) in each case being constructed as a plastically deformable pressure element and this, in the final state pipe connection (1), brings about with ring-shaped, inwardly directed depression regions (11, 11',11") a sealing immobilization of an associated pipe end.

Abstract: A tube coupling comprising a metal tube of relatively uniform thickness and having a radially outwardly expanded integral sleeve at one end thereof, and a radially extending tube shoulder being defined at the juncture at which the sleeve is expanded outwardly, the tube having a throughbore of a first inner diameter, and the expanded sleeve having a throughbore of a second inner diameter greater than the first inner diameter and concentric therewith. A cylindrical, hollow insert is located concentric with the axis of the tube, the insert including a radially extending annular collar at one end thereof. The collar has a tube end face abutting the radial tube shoulder and inertially welded to the tube at the interface of the tube end face and the radial tube shoulder. The insert includes at its other end a cylindrical barrel portion having hose locking and sealing means.

Abstract: The disclosure relates to tube couplings having a moulded plastics coupling body with a throughway having a tapered cam surface extending to an open end. A moulded plastics collet is located in the open end of the coupling body and has an annular portion with an encircling flange at the outer end of the body and four equi-spaced slots extending into the collet from the other end to divide the collet into four resilient fingers which are pressed inwardly by the tapered cam surface to engage and grip a tube extending through the collet into the body. The slots have T-shaped ends adjacent the annular part of the collet to increase the flexibility of the fingers at their roots.

Abstract: A quick disconnect forming a coupler for high pressure fluid lines that has a first hollow member attached to a second hollow member in fluid-tight relationship with an attachment collar having relatively coarse threads thereon for quick attachment and detachment of the first and second members. A cylindrical stop ring is threadedly attached to one of the members to form a second shoulder in spaced opposition to a first shoulder on one of the members such that the attachment collar can move axially only between the two shoulders. A resilient O-ring is formed in a recess on the second member and engages an annular recess on the attachment collar to resist movement of the attachment collar by vibration.

Abstract: This fitting is of the type whose body has a cross bore and at one end, means to connection to one of two elements to be connected using said tubes while at its other end it has an annular chamber coaxial to the bore meant to receive one end of a tube by simple engagement, the chamber holding various annular mechanisms to retain the tube, coaxial to the chamber and arranged between its wall and the tube, that is, a retainer ring partially closing the chamber and able to slide in it, a waterproof seal and a part with radial prongs. According to the invention, the fitting is made up of, on one hand, a body 4 having said cross bore 10 and said connection means 11 and 12 and, on the other hand, of a bushing 5 which can be assembled in the body 4, limiting said chamber 20 and made up of means 30 to 33 for retaining the various aforementioned mechanisms 21, 22 and 23 which it holds.

Abstract: The present invention is directed toward a quick release cam locking joint for connecting adjacent ducts for a track switch snow melter. The invention also includes a track duct support bracket for holding track switch snow melter track ducts.

Abstract: The connecting device comprises a connecting body (12) and at least one connecting piece (20) adapted for having plugged thereon the end portion (24) of the plastic tube (14) to be connected. The outer diameter of the connecting piece (20) is slightly larger than the inner diameter of the plastic tube (14). Prior to plugging the plastic tube (14) onto the connecting piece (20), a pressing sleeve (28) is shifted onto the plastic tube (14). The inner diameter of the pressing sleeve (28) is selected such that the pressing sleeve (28) can be pressed onto the end portion (24) of the plastic tube (14) plugged on the connecting piece (20). During this process, the plastic tube (14) is displaced in axial direction until its forward end is received in a receiving groove (46) annularly surrounding the connecting piece (20) and being open towards the plastic tube (14).

Abstract: High temperature ceramic nut of aluminum oxide for use in coupling a flared tube to a flare fitting.

Abstract: An improved fluid connector has a deformable axially outer ring with latches which retain a tube within a main body of the connection. The outer ring is oval in cross-section, with the latches extending along surfaces spaced across the minor diameter of the oval. Connection portions connect the outer ring to a main body of the connector. The connection portions extend from locations spaced across the major diameter of the oval shape. An upset portion of the tube deforms the latches radially outwardly upon insertion. A removal force may be directed radially inwardly of the outer ring at locations adjacent to the connection portions to cause the latches to bow radially outwardly and allow the tube to be removed from the connector. The inventive connector bears the removal force on the relatively thicker connecting portions, and requires flexing in the relatively thinner outer ring.

Abstract: A novel quick disconnect, the nipple portion of which is provided with a unique spring seal comprising an elastomeric retainer and a multiple-turn wave-type spring contained within an annular pocket within the retainer. The nipple is provided with a body having a flanged portion which floats on the spring seal relative to an annular chamber within the wrench portion of the threaded member of the nipple. In addition, the wrench portion of the corresponding coupler is chamfered in order to automatically adjust the nipple body despite misalignment of radial, angular and axial type, thereby permitting secure leak proof interconnection of the quick disconnect members. Such capability is especially useful in accommodating coolant fluid flow through a plurality of serially interconnected electrical chasses wherein misalignment of quick disconnect flow connectors cannot be readily accommodated by manual adjustment means and must be accommodated by automatic adjustment of the quick disconnect components.

Abstract: A sleeve is configured to fit slidably around a water hose. One end of the sleeve is oriented towards an end coupling, and is configured as a wrench to register with the external surface of the coupling.

Abstract: A detachable locking device is described which consists of a pair of standard box end wrenches with shortened handles having integral ears on the ends of the handles with openings therethrough. The wrenches are designed to be retrofittably placed behind the respective connecting nuts on the line termination point adapter assemblies which are to be joined. The preliminary connection and seal are made using conventional means and the connecting nuts are torqued to near their optimum value. The wrench heads of the locking device are then positioned on the nuts so that a connecting bolt can be passed through the openings in the ears on the handles, a nut attached thereto and then tightened to hold and secure the connecting nuts together and prevent the nuts from loosening or seal leaking during the operation of the fluid transmission line.

Abstract: One-piece garter spring coupling release tool. The release tool is molded in a single selectively configured shape out of a durable, flexible plastic material such as Elastollan.TM. S98A available from Elastogran of Germany. The release tool generally comprises a cylindrical body with a slot along its length and a flange on one end. The slot permits the tool to be positioned around a port to which a garter spring coupling is connected; the flange provides an area for gripping the tool to releasably engage the tool with its coupling. The flexible, slotted configuration of the garter spring coupling release tool permits nesting of a four-piece set of such tools within each other to facilitate packaging, storage and retention of the tools as a set.

Abstract: A T-fitting for use in plumbing, particularly in the installation of an appliance that requires connection to the existing water supply to the building in the building in which the appliance is installed. The fitting has an inlet and an outlet having connectors for connecting to the existing water line after the water line has been cut. A second outlet is provided to connect to a water supply line to the appliance. Preferably, the second outlet has an integral valve so that the water may be regulated to the appliance without affecting the flow of water in the existing water line.

Abstract: A detachable push-in connector for semirigid pipes, consisting of housing (1) having a through hole (2) and a plurality of cavities increasing step-wise in size to receive a pipe (3), and a sealing ring (7). Sealing ring (7) is preceded, in the push-in direction of pipe (3), by a retaining ring (14) having inwardly projecting spring tongues (16) capable of opening out elastically and that is held in place by a supporting ring (17). Tongues (16) form a flat truncated cone whose tip points in in the push-in direction. Between retaining ring (14) and sealing ring (7) is a stop ring (9) having a conically bevelled inner portion in the region of spring tongues (16) to permit them to open out. A disconnecting ring (22) axially slidable relative to supporting ring (17) is disposed upstream of retaining ring (14) in the push-in direction and has a conical forward edge (23) for spreading out spring tongues (16) of retaining ring (14 ) when disconnecting ring (22) is pressed into housing (1).

Abstract: The present invention is directed to a bulkhead mounting assembly comprising a bulkhead-securing flange on an integral body having a large diameter externally threaded portion and a small diameter externally threaded portion with the large diameter externally threaded portion engaging a bulkhead-securing nut of sufficient diameter so as to pass over the small diameter externally threaded portion and an outer coaxial conduit-securing nut engaging the small diameter-threaded portion and preferably any cap placed on an inner coaxial conduit such as used to secure ultra high purity conditions within the inner coaxial conduit.

Abstract: A connector assembly connects a hub connector to a wellhead housing by utilizing a collet. The collet has an upper internal projection that engages the hub connector and a lower internal projection that engages the flange on the wellhead housing. An actuator ring moves the collet from an unlocked to a locked position, the actuator ring moving axially. A drive nut, when rotated, will move the actuator ring downward. Load screws extending through the drive nut force the actuator ring further downward after the drive nut has reached its lower position. Release pins extending through the actuator ring, when rotated inward, will pry against a release surface to move the actuator ring upward relative to the drive nut.

Abstract: A junction adapter, having face seal fluid fittings and being for use in a conventional plural line clamping system, has axial extension portions which extend from a central support portion, in a manner which permits face seal fluid connectors to be easily accessed by a wrench or like tool. Two embodiments of this new kind of junction adapter are described. The first embodiment features a junction adapter having axial extension portions which extend symmetrically outwardly from a central support portion substantially beyond the axial extension portions of conventional face seal junction adapters. This first embodiment can be installed in a plural line clamping system in an alternating manner with conventional face seal junction adapters.

Abstract: An adaptor for use with an electrofusion fitting for enabling a thermoplastic pipe to be coupled to a dissimilar pipe includes a housing sleeve for coupling at one end to the dissimilar pipe with the opposite end being formed on its outer surface with an annular ribbed section covered by a plastic sleeve. An anchoring ring overlies the annular ribbed section of the housing sleeve and is effective to firmly anchor the plastic sleeve to the annular ribbed section of the housing sleeve during electrofusion of the plastic sleeve to one end of an electrofusion fitting, and of the plastic pipe to the opposite end of the electrofusion fitting.

Abstract: A gas-tight pipe connection includes a sleeve which has two internal thread portions which extend from the ends of the sleeve to a thread-free portion located in the middle of the sleeve. The sleeve includes a radially inwardly projecting web located in the middle of the thread-free portion and extending over a certain width. The web has end faces constructed as contact shoulders. A sealing portion each is provided between the internal thread portions and the contact shoulders. The connection further includes two pipes, each of which has in an end portion thereof a threaded portion constructed complementary to the internal thread portion of the sleeve. Each pipe also has a contact shoulder and a sealing surface arranged between the contact shoulder and the threaded portion. A tight metal seat is formed between the sealing surface of the pipe and the sealing portion of the sleeve.

Abstract: A fluid connector and lock combination is described for connecting a tube to a base element. A relatively fixed, threaded base element has a passageway for passing fluid. A threaded mounting connector for surrounding the circumference of a portion of a tube is provided and which also mounts the tube to the relatively fixed, threaded base element through threaded engagement. The connector maintains a seal between the tube and a corresponding surface in the base element when the connector is sufficiently threaded to a sealed position relative to the base element to prevent leakage of fluid across the seal. A linkage is provided between the connector and the base element for preventing unthreading of the connector from the sealed position relative to the base element. The linkage includes a first portion which is linked to the connector and a second portion which engages slidingly in an axial direction the base element for preventing relative rotation between the connector and the base element.

Abstract: A releasable fast-action coupling has a female part formed centered on an axis with an axially outwardly open bore having a smooth-walled inner portion of predetermined diameter and an outer portion of somewhat greater diameter and formed with an internal screwthread. A male tube part having an end engageable in the bore has an inner portion engageable in the inner bore portion and formed with a radially outwardly open groove, an outer portion engageable in the outer bore portion when the inner tube portion is in the inner bore portion and formed with a radially outwardly open groove, and a radially outwardly projecting ridge axially inwardly engaging the bore shoulder when the tube part is fitted in the bore. An elastic seal ring seated in the groove of the tube inner portion radially outwardly engages the bore inner portion when the tube part is fitted in the bore.

Abstract: The invention relates to a corrosion-preventive sleeve for preventing corrosion of a drilled hole in a metal pipe, and also to a mounting tool for mounting this corrosion-preventive sleeve in such drilled hole. The corrosion-preventive sleeve comprises an elastic sleeve and a corrosion-resistant metal sleeve to be inserted into the elastic sleeve. The elastic sleeve with the corrosion-resistant metal sleeve inserted therein in its diametrically contracted state is inserted into the drilled hole. Subsequently, the tapered member of the mounting tool is passed through the metal sleeve, whereby the latter is diametrically expanded. Then, with this, the elastic sleeve is also diametrically expanded and is intimately contacted with the inner surface of the drilled hole.

Abstract: A fastening device in the shape of an outer clamping sleeve member with an internal thread, and an inner clamping sleeve member with an external thread, said clamping sleeve members being mutually rotatable. One or both of the clamping sleeve members may be provided with an axial through slot or may have mutually parallel, axially extending and partly overlapping slots. The threads of the clamping sleeve members may be a cylindrical or a conical shape. A central sleeve may be provided between the outer and inner clamping sleeve members for cooperation with same. Wrench mounts are provided on the device, such as teeth and slots, and a complementary securing tool may be inserted to engage the teeth and slots for mutual turning of the clamping sleeve members. The device can be used, e.g., to mount a shaft to a wheel-hub, to connect pipe ends, or as a non-threaded nut.

Abstract: The present invention is directed to a bulkhead mounting assembly comprising a bulkhead-securing flange on an integral body having a large diameter externally threaded portion and a small diameter externally threaded portion with the large diameter externally threaded portion engaging a bulkhead-securing nut of sufficient diameter so as to pass over the small diameter externally threaded portion and a conduit-securing nut engaging the small diameter-securing portion and preferably any cap placed on the conduit such as used to secure ultra high purity conditions within the conduit.

Abstract: A split gland having only three parts to obtain effective stability to relative motion of the constituent half-gland members. A large area clamping ring generates a clamping force effective to maintain the alignment between male and female mirror image half-gland members. Ease of manufacture and use result from the reduction in complexity of the present invention.

Abstract: A subsea well assembly has ability to receive an internal tieback connector when providing full bore access. The subsea well assembly has an inner wellhead housing which has a counterbore at its upper end. A tieback profile is formed in the counterbore. A protective sleeve releasably secures the counterbore, covering the tieback profile. After drilling is completed and tieback installation begins, the protective sleeve is removed. An internal tieback sleeve carried by a tieback funnel engages the tieback profile in the counterbore to secure the tieback funnel to the inner wellhead housing.

Abstract: A detachable locking device is described which consists of a pair of standard box end wrenches with shortened handles having integral ears on the ends of the handles with openings therethrough. The wrenches are first placed behind the respective connecting nuts on the line termination point adapter assemblies which are to be joined. The preliminary connection and seal is then made using conventional methods and the connecting nuts are torqued to near their optimum value. The box end wrenches of the locking device are then positioned on the nuts so that a connecting bolt can be passed through the openings in the ears on the handles, a nut attached thereto and then tightened to hold and secure the connecting nuts together and prevent the nuts from loosening or seal leaking during the operation of the fluid transmission line.

Abstract: Prevention of incomplete connection of pipes, and easy and visual checking for incomplete connection between the male and female members from the outside, and the prevention of dirt and dust from entering the connection are aimed.

Abstract: A tube union for coupling the ends of a pair of tubes which are butted together includes a sleeve and two swaging collars about the sleeve without other components. Grooves and lands in the sleeve mate with a tube which is deformed into the grooves as the sleeve is urged inwardly under compression. The rings are urged centrally towards the central position of the sleeve by a tool constituted by two housing members which each have several components. Torsional wrenching of the housing members screws the housing members together, causing the collars to deform the sleeve. Thereafter pins are removed from the one housing members and the wrench from the other. This permits separation of the housing members from the swaging collars. The tool can effect connection or assembly of different elements.

Abstract: A tool is provided for securing a fastening device in the shape of an outer clamping sleeve member with an internal thread, and an inner clamping sleeve member with an external thread, said clamping sleeve members being mutually rotatable. Wrench mounts are provided on the device, such as teeth and slots, and the securing tool, which is complementary, is inserted to engage the teeth and slots for mutual turning of the clamping sleeve members. A lock pin is also disclosed, which is received in adjacent slots of the sleeve members to prevent movement of one relative to the other.

Abstract: A hydraulic fitting (20,120,220,320,420,520,620,720,820) [of the type for connecting pressurized fluid-conveying members includes a tubular member (22,122,222,322,422,522,622,722,822) having opposite distal ends and defining a fluid passage (24,124,224,324,424,524,624,724,824) extending between the ends of the tubular member (22,122,222,322,422,522,622,722,822).] includes [T]threaded connection portions (26,126,226,326,426,526,626,726,826) [are provided on each end of the tubular member (22,122,222,322,422,522,622,722,822) for connecting the fitting (20,120,220,320,420,520,620,720,820) with hydraulic fluid lines and the like.], and [S]sealing portions (28,128,228,328,428,528,628,728,828) [are formed] adjacent the connecting portions (26,126,226,326,426,526,626,726,826) for perfecting a fluid-tight seal between the fitting (20,120,220,320,420,520,620,720,820) and [the] associated fluid lines.

Abstract: A squeeze-to-release quick connector for engaging a flanged male member includes a cylindrical body portion which is open at one end for receiving the male member and forms a conduit receiving adapter at its opposite end. An annular retainer ring is axially spaced from the open end and is attached to the body portion by two circumferentially opposed, generally parallel axially elongated beam members. Each beam member is affixed at one end to the retaining ring and at an opposed end to a mount located on the body portion axially spaced from the open end. Two circumferentially spaced detents extend inwardly from a retaining ring to capture the male abutment surface to effect positive engagement therebetween.

Abstract: A hose coupling wherein a tubular connector has a first portion with an internal annular wall and an internal annular protuberance, and a cylindrical second portion. The protuberance is located between the wall and the second portion, and the first portion has axially extending elastic arms with pallets which can engage an external rib of a pipe when the terminal portion of such pipe is introduced into the first portion. A thin-walled metallic sleeve has a larger-diameter first section with a free end which is receivable in an annular socket of the wall after having passed within and beyond the protuberance upon entering through the open end of the second portion of the connector. At such time, the first section deforms and/or is deformed by the protuberance.

Abstract: A thermal isolation coupling system for attaching a high-temperature fluid-bearing tube to an aperture in a housing, in which a separate low temperature flow is established. Locking means attaches the tube end to the housing, in a particular desired position relative to the aperture. A tube support member connects the tube end to the locking means and facilitates positioning of the extreme tip of the tube end in the low temperature flow, in substantially non-heat conducting isolation from the aperture and the housing.

Abstract: A universally articulable supporting sheath comprises an interconnected series of links, each having a convex spherical surface at one end, and a concave spherical surface at its opposite end. The concave and convex surfaces mate with one another to form the sheath. Special links having branch openings may be provided. Various forms of waterproofing seals are provided, including O-rings, axially compressed rings, flexible belts, and ridges on the spherical surfaces. The links can be fitted together by thermal expansion. However, an axially split link is also described, which comprises two parts which snap together. The split parts may be molded as a unit with an integral thin wall hinge. The bending characteristics and bending radius of a sheath can be modified by insertion of spacers between the links at selected locations, or by the insertion of pins into radial holes provided in the links.

Abstract: A high pressure coupling for hose-like objects in which the nipple structure includes a main portion, a connecting nipple portion extending from the main portion in one direction and a nipple portion extending from the main portion in the opposite direction. A sleeve-like member made from tubular stock is adapted to be securely connected to the nipple structure by crimping, flanging or the like. The nipple portion includes outwardly projecting, rounded-off ribs cooperating with rounded-off grooves in the sleeve-like member so that the hose inserted between the nipple portion and the sleeve-like member is held securely in position after the nipple portion is internally expanded with subsequent reduction of the cylindrical surface of the sleeve-like member. Both the nipple structure as well as the sleeve-like member are made from appropriate stock machined accurately to the required dimensions.

Abstract: An arrangement for mounting a tube (4) provided with a flange in a hole (3) formed in a wall (2) comprises a locking ring (8) with at least three peripherally spaced apart seats (10) adapted to cooperate with a corresponding number of pins (9) which are fixed to the wall and which each have an oblique surface against which a cam surface (13) provided adjacent to the seat (10) on the periphery of the locking ring is arranged to be applied so that, when the locking ring is turned, the locking ring is urged against the wall in order to compress an elastic sealing ring (7) provided between the locking ring and the wall.

Abstract: A redundant locking fluid coupling has a first coupling element including a coupling nut and a second coupling element including an outer ring biased towards the sealing end, such as by a coil spring. The coupling nut and outer ring include circumferential ends that are engaged when the coupling nut is tightened on the second coupling element inner member. Rotation of the coupling nut in a loosening direction is prevented by ratcheting teeth, or, in an alternative embodiment, complimentary sawtooth teeth, in the circumferential surfaces of the coupling nut and outer ring. Loosening of the coupling nut may be accomplished by sides of a wrench engaging a wrench lead in chamfer forcing axial movement of the outer ring to disengage the ratcheting teeth, or in the alternative embodiment, loosening torque being sufficient to overcome the thread torque and the increased frictional force across the complementary sawtooth teeth.

Abstract: A quick connector includes a first member, a second member, an engager claw member and an urging member. The first member includes a first tube and a ring-shaped projection. The second member includes a socket at an end thereof, the socket including a tapered regulatory inner peripheral surface. The engager claw member is made movable in an axial direction of the socket, disposed in the second member, and includes a ring-shaped base, a plurality of arms being deformable in a radial direction and a claw extending from an end of the arms and engaging with the ring-shaped projection of the first member. The urging member presses the engager claw member onto the tapered regulatory inner peripheral surface of the socket, and urges the claw inwardly in a radial direction.

Abstract: A snap-ring assembly has a sleeve formed with a bore centered on an axis and having an axially outwardly open end formed with a radially inwardly open groove, a pipe having a collar projecting axially inward into the bore end past the groove, a snap ring seated in the groove and projecting axially into the bore to block outward displacement of the collar, and a seal ring in the bore between the collar and the sleeve. The sleeve is formed at its open end with an axially outwardly open notch extending axially inward generally to the groove so that a tool can be inserted in the groove under the snap ring to remove same from the groove.

Abstract: A fluid coupling includes first and second connectable fittings. Each of the fittings include a body, an annular seat, and a fluid channel extending through the body and seat thereof. The first fitting includes a pair of latch bosses, and the second fitting includes a pair of latch arms, with the second fitting being rotatable relative to the first fitting to a latched position wherein the latch arms engage the latch bosses for maintaining the first seat adjacent to the second seat for allowing fluid to flow between the first and second channels. The fittings are also rotatable to a disengaged position wherein the latch arms and pins are disengaged to allow the first and second seats to be separated.

Abstract: A quick connect branch connector includes a saddle to which one end of a spring clip is hingedly connected, a traction device being provided at the opposite end of the spring clip for cooperation with the saddle, whereby the spring clip can be placed under tensile hoop stress in encircling relation with a pipe.