Abstract: A pipe connecting apparatus for connecting a first pipe with a second pipe inserted into the first pipe member is disclosed. The apparatus includes an elastic seal to be disposed within a gap formed between an inner peripheral face of the first pipe and an outer peripheral face of the second pipe, the elastic seal being compressed in an axial direction along the axis of the first pipe for sealing the gap, a press ring fitted on the second pipe, the press ring being movable on the outer peripheral face of the second pipe in the axial direction, and a retainer member fitted on the second pipe, the retainer member having a locked condition in which the retainer member is pressed against the second pipe and a released condition in which the retainer member is radially expanded to be released from the locked condition, the retainer member being switched over from the released condition to the locked condition in association with a movement thereof relative to the press ring.

Abstract: The air vent has a body with a central axis, a top end, a bottom end, a flat surface on the top end and a flat surface on the bottom end. A gripping surface extends from the top flat surface to a stop surface that is transverse to the axis. The small diameter end of an upper conical surface joins the stop surface. A large diameter end of a lower conical surface joins the large diameter end of the upper conical surface. A cutting edge formed by the flat bottom surface and the lower conical surface pierces a container when the air vent is forced into the container. The lower conical surface expands the opening made by the cutting edge. The stop surface limits penetration and the upper conical surface urges the container wall toward the stop surface. An air vent passage through the top flat surface and the bottom flat surface lets air into the container. A cap closes the air vent passage. The air vent is removed from an empty container for use in another container.

Abstract: The present invention provides a disconnect which has the internal integrity to make it as strong as the rest of the drill string. The present invention can disconnect when desired, despite the fact that the apparatus is at that time subjected to significant tensile or compressive loads. The invention allows for disconnection by alternative methods. Accordingly, in one version of the tool, a ball can be dropped or pumped to a seat to facilitate disconnection. In another version of the tool, that may employ an internal wireline precluding the use of a ball, disconnection can be accomplished by compression of a stack of Bellville washers, in response to a tensile force, to release a collet-locking mechanism. Either design features a rotational locking component.

Abstract: The present invention refers to a completion riser joint (1) shearing by the shear ram of the blow-out preventer (BOP) (2), to be coupled, at its lower part, to the column hoist running tool and, at its upper part, to the completion riser column, the referred shearing completion riser joint (1) comprising upperly a riser bolt (3), connected at its lower portion to an access pipe (4) to the production column, shearing by the shear ram of the BOP (2), enveloped by hydraulic lines (5, 6) that allow the actuating of the column hoist running tool and the access to the annular, the referred pipe (4) being connected lowerly to a re-entry mandrel (8), which function is to allow the locking of the recovery tool (12) and, through it, allow the hydraulic continuity for actuating the unlocking function of the piping hoist and, following, its release, and lowerly to a riser box (9) on top of the piping hoist running tool.

Abstract: A device in a pipe coupling between a pipe end portion and a wall surrounding the pipe end coupling which is constituted by a socket, consists of a stop face device which is fixable in axial directions in relation to the surrounding wall and engages an end surface of the pipe end portion so as to define the final, fully seated position of the pipe end portion in relation to a surrounding wall of the socket when the pipe end portion is introduced therein. The stop face device becomes inactivatable subsequently to defining the position of the pipe end portion in the surrounding wall.

Abstract: A coupler 10 for pressure conduits 12a-d comprises movable components 22, 26 selectively engageable with or disengageable from fixed components 34 to provide disconnectable sealed pressure connections therewith, the moveable components 22 being acted upon by a primary actuator comprising a bearing plate 52, a thrust nut 50 and a threaded drive spindle 44. Spindle 44 is mounted in an end cap 46 normally held fixed relative to the fixed components by collet fingers 66 but which is disengageable from a connector body 14 upon withdrawal of a retainer sleeve (70, FIG. 8) so as to provide secondary actuation of the movable components 22, 26 independently of the primary actuator 44, 50, 52.

Abstract: A connector system that is useful for attaching a flexible hose assembly to PEX pipe produced by either the Engle or Silane process. One embodiment relates to a connector system using a nipple in combination with either an expandable PEX ring or a compression ring and threaded nut. The nipple has on one end a hose barb that is attachable to a flexible hose segment and on the other end a male connector attachable to a PEX supply pipe. Another embodiment relates to a flexible hose assembly comprising a flexible hose segment and at least one connector system comprising a nipple attached to one end of the hose segment in combination with either an expandable PEX ring or a compression ring and nut for securing the end of the nipple opposite the hose segment to a PEX pipe.

Abstract: The present invention relates to a weaklink device for controlled breaking of at least one interconnection (5) on an elongated article (2) such as an umbilical comprising one or more elongated elements such as metal tubes (3,4), said interconnection being of the disconnectable type having two coupler parts (6,7).

Abstract: A quick-coupling device in the form of an insertable cartridge for coupling a tube within a cylindrical housing, the device comprising a tubular insert having external means for anchoring it inside the housing and internal means for retaining the tube, together with a gasket; wherein the tubular insert has a nose of outside diameter that is smaller than the diameter of the means for anchoring the tubular insert and has a protection ring of inside diameter close to the outside diameter of the nose, said ring being mounted on the free end of the nose and being held axially relative to the nose by weak locking means in an axially projecting position relative to the nose for internally receiving the gasket.

Abstract: A connector assembly includes a first fitting defining a first aperture, and a second fitting couplable to the first fitting and defining a second aperture. In some embodiments, each of the first and second fittings includes a sealing layer sealing its aperture. In other embodiments, each of the first and second fittings includes a removable layer overlying its aperture. The connector assembly may include a stem member which is mounted in the first fitting and includes a head axially movable into the aperture of the second fitting.

Abstract: A retainer for releasably locking the male and female components of a quick connector. The retainer is releasably insertible into a transverse bore in the female component and is blocked from full insertion by a projection. An extension projects from the retainer and has an aperture sized to receive the tip end of the male component, but not a radial flange on the male component when the retainer is partially inserted into the female component. Forced insertion of the male component breaks off a ring portion of the extension thereby enabling the radial flange on the male component to fully move into the female component. The retainer can then be urged into the fully latched position locking the male and female components.

Abstract: A releasable connection between the lower end of a running string and a well tool that is subject to being stuck in a well includes inner and outer members movable telescopically between contracted and extended positions, a tension sleeve connecting the members in the contracted position and being disrupted by a predetermined pull to allow telescoping movement, a stop nut to limit such movement in the extended position of the members, and a mechanism responsive to a certain number of cycles of telescoping movement for disabling the stop nut to allow complete release and separation of the members.

Abstract: An assembly for connecting a fuel or fluid line between a male part and a female part in which a laminar block axially locks the male part and the female part in connection with one another by being displaced about the male part in a direction perpendicular to the axis of the connecting line. The assembly includes a unitary element made of a semi-rigid material and having a substantially semi-circular portion constituting an elastic clamp, projections extending from one side of the clamp, each including a portion facing inwardly toward a central longitudinal axis of the clamp and adapted to engage with the female part, a flap arranged at each end region of the clamp and having a small thickness, and an annular stop releasably coupled to the flaps and including radial blocking elements. The annular stop is adapted to be interposed between the male part and the female part and to be ruptured or separated from the flaps and thus the elastic clamp upon insertion of the male part fully into the female part.

Abstract: In connecting a flushing port (2) of a toilet stool (1) which is formed so as to face the floor surface to which the toilet stool (1) is installed to a drainpipe (3) of the building, the connection is made by means of a flushing-side connecting pipe (6) which connects to the flushing port (2), a drain-side connecting pipe (7) which connects to the drainpipe (3), and a linking pipe (8) which makes connection between the above-noted two pipes. In making the pipe connections, the linking pipe (8) is cut off in accordance with the distance between the flushing port (2) and the drainpipe (3) or pipe insertion overlap can be used to adjust the length of the linking pipe (8).

Abstract: A connector assembly includes first and second fittings including first and second membrane assemblies, respectively, and a stem member. A fluid delivery system includes a connector assembly, a container for holding fluids and tubing which couples the container to one of the first and second fittings. A method for making a contaminant-free connection comprises mating first and second fittings, and establishing a fluid flow path through the first and second fittings. The systems, assemblies and methods according to the invention may be used, for example, to handle a biological fluid while maintaining the fluid free of viable contaminating microorganisms or preserving its sterility.

Abstract: A hydraulically or pneumatically releasable disconnecting device (1), through which a liquid can flow, and wherein two end pieces (2, 3) are connected in that an expandable locking ring (20) in normal position engages grooves (23) in a locking sleeve (10). An axially displaceable locking sleeve (6) surrounds the locking ring (20) with one end thereof and prevents the locking ring (20) from expanding and disengage the grooves (23). The locking sleeve (6) is fixed with shear pins (7). When the disconnecting device (1) is to be released, a sealing body (14) is placed in a seat (13) in a piston sleeve (12), preventing flow of liquid therethrough. Hydraulic force acting against the sealing body (14) and the piston sleeve (12), urges the piston sleeve (12) against the safety sleeve (6) such that the shear pins (7) are broken. Thus, the safety sleeve (6) is displaced such that it can no longer surround the locking ring (20).

Abstract: The invention relates to a sealing flange (14) which comprises a tubular structure which has an axis (22) and consists of an integral tubular outer body (20) which contains a series of annular seals (32a, 32b, 32c, 32d) which are disposed substantially coaxially according to the axis, these seals being suitable for surrounding a tube when the latter is inserted in the structure. The invention applies in particular to repair of gas pipes.

Abstract: A frangible region is provided around at least one end of the outer connector part or cover of a hose and connector assembly, whereby a significant portion of such outer cover can be easily removed from the frangible connection to its end. This frees the end of the underlying hose to be removed from the inner connector part, a new hose part engaged over the exposed portion of the inner connector part, and a conventional clamp used to secure the new hose piece in place on the inner connector part. The outer jacket can be comprised of a plurality of bands, each band molded in place around a hose end, instead of a single piece outer jacket. The frangible region is created in the original molding process, and can, if desired, be formed on more than one of the ends of the outer molded connector part or the bands.

Abstract: A method of installing an anti-siphon flow restricter into a gas flow lumen of a nebulizer includes providing an anti-siphon flow restricter having a side wall conforming to a cross section of the gas flow lumen, first and second ends at opposite ends of the side wall and an elastomeric diaphragm closing the first end of the side wall. The anti-siphon flow restricter is axially inserted into the gas flow lumen with the diaphragm leading. The diaphragm is slit and allowed to self-bias closed.

Abstract: A ratchet type closet flange for replacing broken cast iron closet flanges in old buildings or in new construction in place of conventional cast iron closet flanges. The patented invention comprising a flange body, a cup, a rubber seal, and a means for applying pressure. After removing the broken closet flange, the ratchet type closet flange is inserted into the existing pipe. A compression seal is formed between the flange body and the inside of the pipe by applying pressure to the flange body and the cup, forcing a compression seal between the rubber seal and the pipe. The ratchet type closet flange may slide up and down inside the pipe to achieve the desired height.

Abstract: An adaptor (1) and method for fitting or replacing a branch-off connection in a fluid distribution main in which the adaptor (1) is inserted into a hole in the wall of the distribution main, the adaptor (1) comprising a rigid body (2) with an internal bore (3) therein, the internal bore (3) being closed with a displaceable blocking element (10), and a service pipe (16) is inserted into the internal bore (3) of the adaptor (1) so as to displace the blocking element (10) and open the internal bore (3) of the adaptor (1).

Abstract: A tube nut torque limiting method and apparatus provides direct mechanical control of the maximum torque that can be generated when securing a tubular member within an internally threaded component. The torque limiting tube nut includes an externally threaded portion (14), a service head portion (16) and an installation head portion (22). A shoulder (24) is disposed between the service head portion (16) and the installation head portion (22) to mechanically control the maximum torque applied to the externally threaded portion (14). Upon separation of the installation head portion (22) at the shoulder (24), the installation head portion (22) includes a removal passage (40) for allowing the installation head portion (22) to simply be removed from the tubular member (28).

Abstract: This invention relates to a two-piece drilling flange which allows for the full engagement of a conventional casing head external thread (8-round thread) reducing thread wear. The two-piece drilling flange incorporates a flange-bushing piece and a drilling-flange piece. The flange-bushing piece is hand tightened on the 8-round thread so that the casing head end face protrudes beyond the bushing. The drilling-flange piece is threaded onto the flange-bushing piece until a highly reliable elastomeric radial seal makes tight contact with the casing head end face. The drilling-flange piece is then further tightened, exerting an upward force on the flange-bushing piece, ensuring the full engagement of the casing head 8-round thread by the flange-bushing piece internal thread. This tight thread fit reduces thread wear by preventing destructive movement between the threads, especially during the highly vibrating drilling process.

Abstract: A device for coupling a pipe made of rubber or the like on an endpiece, the device comprising a part of plastics material overmolded on the end of the pipe engaged on the endpiece to compress said end radially, the part having a longitudinal slot or groove enabling it to be dismounted by being cut or broken. The invention is particularly suitable for coupling hoses in motor vehicles and household appliances.

Abstract: A pipe lap joint is disclosed with an improved sealing zone and which comprises a pair of end-to-end intersecting slots in the outer pipe which allow the sealing zone to be collapsed against the inner pipe by a band clamp around the outer pipe. The outboard slot extends inwardly from the end of the pipe and the inboard slot is circumferentially offset and extends inwardly from the outboard slot. A frangible bridging segment of the wall of the pipe extends between the adjacent walls of the two slots and is deformed or fractured and maintains isolation between the slots when the pipe is collapsed. To facilitate collapse of the outer pipe, the length of the inboard slot is maximized for increased leverage of the clamping force.

Abstract: A nebulizer (10) has a housing (12,14) including an aerosol outlet (22) and a bottom wall (52) with a side wall (50) connected thereto defining a reservoir (54) for a liquid (106). A gas jet (58) extends along a longitudinal axis (60) of the housing (12,14) and through the bottom wall (52) of the housing (12,14), the gas jet (58) defining a gas flow lumen (66) having a gas orifice (64) at its distal end. A liquid nozzle (16) having a liquid orifice (102) at a distal end corresponding to the distal end of the gas jet (58) surrounds the gas jet (58). The liquid orifice (102) is spaced from the gas orifice (64) for nebulization of liquid (106) fed to the liquid orifice (102). A diaphragm (126) made of an elastomer has a slit (130) which is biased closed. Cooperating shoulders between the diaphragm (126) and the gas flow lumen (66) maintain the diaphragm (126) in the gas flow lumen (66) with the slit (130) transverse the length of the lumen.

Abstract: A clip (100) is provided that has a substantially tubular body member (50) and at least one and preferably two diametrically opposed, outwardly extending tabs (18 and 18') that first engage a side of a frame (6) having an opening (13) through which clip (100) is inserted about a threaded stud or bolt (4) such as a vehicular exhaust tail pipe and which are operative to bend and straighten as a nut (8) rotationally advances along stud or bolt (4) to engage an end (7) of clip (100) and urge clip (100) through opening (13) until nut (8) engages frame (6) to eliminate effect of joint loosening caused by exposure of tabs (18 and 18') to corrosive environments.

Abstract: A waterproof coupling between at least one tube and at least one endpiece by means of a molded portion secured to the tube and providing means that provide sealing between the tube and the endpieces, wherein said portion which is made of a material of the elastomer type or of a material having analogous properties, and that has been vulcanized or cross-linked after molding, is also secured, after vulcanization or cross-linking, to a ring or sleeve by means of which the tube is suitable for being assembled to the endpiece.

Abstract: This invention relates to a quick connection of a tube capable of being fitted in a connector, said tube presenting, at a determined distance from its end, a shoulder, whilst the connector comprises an O-ring intended to come into contact with the tube in the zone located between its end and the shoulder. A member for locking the tube is mounted in the connector, said member being axially immobilized with respect to the connector and elastically deformable in the radial direction between an inactive configuration and an active configuration in which it abuts on the shoulder. A bush is mounted to slide in the connector between a first position and a second position remote from the first towards the inside of the connector, said bush presenting a stop disposed on the path of the shoulder of the tube and ensuring, in its first position, hold of the locking member in its inactive configuration, whilst the locking member is released when the bush is in its second position.

Abstract: A containment pipe fitting subassembly of a containment fitting, having open end sockets of a radius to slidingly receive ends of containment pipes, a carrier fitting having open end sockets of a radius to slidingly receive ends of carrier pipes, the carrier fitting being inside the containment fitting, a pair of alignment supports between respective ones of the containment fitting sockets and the carrier fitting sockets, each support having a peripheral flange with a radius comparable in size to the radius of said containment fitting socket and fitted therewithin, the flange defining a central orifice having a diameter comparable in size to the inner diameter of the carrier fitting socket, and each support also having an axially extending cylindrical sleeve with an inner diameter comparable in size to the outer diameter of the carrier socket and fitted over and adhesively tacked to the carrier socket. Carrier pipes are inserted into and bonded to the carrier fitting sockets.

Abstract: A connector assembly includes first and second fittings and first and second membrane assemblies. Each fitting defines a respective aperture. Each membrane assembly has a layer sealing the aperture and a removable contamination containment layer overlying a respective sealing layer. The first and second fittings may be resiliently coupled in biased opposition to urge positive contact between the first and second removable contamination containment layers and/or the first and second sealing layers. In one application, a connector assembly according to the invention may define a fluid communication path for handling a fluid without allowing the level of contaminants in the fluid to increase. A connector assembly according to the invention may be used to handle a biological fluid while maintaining the fluid free of viable contaminating microorganisms or preserving its sterility, for example.

Abstract: A fitting for mating a fluid flow main line, such as a sewage disposal line, with a branch line to a residence, industrial building, or commercial building intended to be serviced. The fitting is mated to a T interposed in the main line which the branch line is intended to intersect. The fitting is, in turn, at its end opposite that by which it is mated to the T, interfitted to the branch line to provide for relative telescoping movement between the fitting and the branch line. Damage to the main line as a result of settling of the earth in which the branch line is buried is protected against.

Abstract: A tieback system for a subsea well employs a tieback member that can be utilized in the event tieback threads in the casing hanger become damaged. An annular groove is formed in the bore of the wellhead housing above the casing hanger. The tieback member connects to tieback conduit and has a lower end that slides into the interior of the casing hanger. A locking device will lock the tieback member to the groove in the wellhead housing. The locking device includes a retainer which carries a radially movable locking members that are cammed outward by downward movement of the tieback member relative to the retainer.

Abstract: A connector assembly including an injection needle for providing fluid communication through a closed injection site at one end of an infusion line for infusing fluid therapy to a patient which includes an injection needle, a hub at one end of the needle, a tube connected to the hub, and a connector mounted to the hub. The connector includes a thread or other device for securing the connector to a complimentary connector provided the end of the infusion line. A second end of the needle extends beyond the thread or other device to permit the needle to pierce the injection site prior to engagement of the thread or other device with the complimentary connector and at least one of the two connectors is mounted for rotary movement relative to the needle and the injection site to permit the connectors to be secured together by rotary movement subsequent to piercing the needle through the injection site without rotating the needle.

Abstract: A flowline safety joint having a tubular member supported from a subsea tree structure, an elbow having a horizontal passage therethrough and a vertical passage extending upwardly from said horizontal passage, a stab-in male member having a leading end, a trailing flowline connecting end, a passage therein and terminating short of said leading end and a vertical opening in said male member communicating with said vertical passage through said elbow when installed within said horizontal passage, and a flat surface surrounding the opening of said vertical opening in said male member. A seal providing a metal-to-metal seal between the lower end of the tubular member and the flat surface on said male member, and a swivel member for connecting said elbow to said tubular member, said swivel member including an element increasing the downward loading of said tubular on said seal to control the loading of said male member at which it releases from said horizontal passage through said elbow.

Abstract: A double air duct boot which includes a pair of identical opposed severable parts, joined through a central section. The two parts are geometrically symmetrical about the central section which joins the two parts. The central section includes a pair of identical halves joined at a central plane. The central section includes a pair of opposed segments of a cylinder constituting spaced, arcuate opposed side walls and a pair of opposed transverse walls joining the opposed arcuate side walls and lying in parallel planes. The central section is completed by a pair of elongated parallel end walls which extend perpendicular to the transverse walls to complete the closure of the central section. Each of the opposed severable parts includes a tapered riser section joined to the central section through an intermediate, optionally usable, arcuate duct mating section.

Abstract: An improved procedure and apparatus for mounting and replacing fire hydrants including a hollow, box-like structure comprising a plastic cylinder which can enclose the hydrant-mounting flange to protect the flange, yet which can quickly and easily be removed and replaced, even by unskilled workmen, to provide access to the hydrant-mounting flange and the break-away bolts without requiring expensive and time-consuming cement work.

Abstract: A self-actuating, releasable weight support system includes a structural support member with a central bore therethrough. The bore has a recessed load support surface therein and a no-go shoulder on the inner periphery of the load support surface. A weight support member is insertable within the bore, and includes an expandable load ring disposed thereon for landing on the no-go shoulder and expanding onto the load support surface as the weight support member is inserted further into the bore.

Abstract: A method which is easy to carry out for connecting domestic drainage conduits to collector sewers uses a special sealing sleeve, comprising a tubular, externally cylindrical body, the one side of which is closed by a thin elastic diaphragm, and on the other side of which, opposite the diaphragm, an outwardly projecting bead is mounted, and the inside wall of which forms essentially two stepped cones, the wall thickness increasing toward the diaphragm. The domestic drainage pipe, together with the sealing sleeve, is inserted in the collector sewer from the outside. The sealing sleeve allows a repair of defective domestic drainage conduits without extensive earth works.

Abstract: A pipe connector including a main body having a stepped bore in one end for telescopic insertion over the end of a pipe, creating a stepped annular area around the pipe. A slip retaining nut is threaded into the end of the main body around the pipe, closing off the stepped annular area. Slips are carried in a tapered annular space between the nut and pipe. Prior to actuation, the slips are held up in disengaged position by shear pins. A pair of metal seal rings is disposed in the end of the stepped annular area opposite the nut. A pair of dual-acting, hydraulically actuated pistons is disposed in the stepped annular area between the metal seal rings and slips. Hydraulic pressure actuates the upper piston to move upwardly to energize the metal seals, and the lower piston to move downwardly to actuate the slips into gripping engagement with the pipe.

Abstract: A frangible fluid conduit fitting particularly suitable for servicing aircraft wherein the fitting is attached to an aircraft service bulkhead coupling. The fitting consists of two parts, one attached to the supply hose and the other attachable to the bulkhead coupling. The fitting parts are maintained in a sealed assembly relationship by a frangible connector having two separate frangible sections. One frangible section fracturing and releasing the fitting parts under excessive bending forces while the other frangible structure releases upon excessive tension forces being imposed upon the fitting.

Abstract: One of the two confined volumes, for example the "supplying" one (2), is provided with a tubular perforating element (3) confined within a space closed by a diaphragm or perforable wall (503); the second confined volume (1) also has a perforable diaphragm (301); the surfaces of the two diaphragms (503, 301) directed towards the external environment are permanently bonded together after which the perforator (3) is manipulated from the outside so as to perforate the two diaphragms, placing in communication, via the tubular duct of the perforator, the confined environment of the supplying volume with that of the second volume.

Abstract: A controllable dual weak point device for insertion in a wireline between the cable and tool. The device consists of upper and lower sections that are slidably joined together in releasable interlocking manner with the upper section secured to the cable and the lower section secured to the tool. The upper and lower sections are joined together by a concentric arrangement of central tube, mandrel and limiting sleeve which are interconnected by first and second springs and first and second shear pin arrangements, i.e., the respective first and second weak points.

Abstract: There is disclosed an oil or gas well having a well bore which penetrates a production zone and a casing string which is anchored in the well bore by a column of cement bonded to the casing string and well bore. Connectors are installed as part of the casing string to permit portions thereof opposite the production zone and above the production zone to be respectively contracted or extended in response to subsidence or other causes of axial loading of the string through the cement column.

Abstract: A coupling having one end attached to a drop pipe of a fire sprinkler system and another end for attachment to a tool subsequent to initially testing the sprinkler system and to a sprinkler head thereafter. The coupling includes an internal frangible closure member to prevent flow of fluid from the drop pipe during the test phase so that the sprinkler may be pre-tested prior to attachment of the sprinkler head. The tool includes an external housing which after completion of the test phase is connected to the coupling, a ram being mounted within the housing and adjustable to position and impact member at the end of the ram at or in abutment with the frangible closure member. The ram is connected to a propelling assembly which permits the ram to be pulled manually against the biasing force of a spring away from the closure member, and upon release of the ram, the ram is propelled toward the closure member so that the impact member shatters the closure member to open communication through the coupling.

Abstract: A device for retaining tubular inner and outer members together in a well allows the members to be pulled apart with a sufficient shear out force. The members have mating retaining and reaction groooves. The retaining groove has a deeper portion joining a shallower portion which is bounded by a shearing side wall. The reaction groove has a shearing side wall which opposes the shearing side wall of the retaining groove when the inner and outer members are fully inserted together. A solid elastomeric ring is carried within the retaining groove. The ring locates in the deeper portion when the inner and outer members are being pushed together. When a pulling apart force is applied, the shallower portion slides relative to the ring until the ring locates in the shallower portion and is contacted by the opposed shearing side walls.

Abstract: A hydraulic safety joint for use in a downhole tool string. The hydraulic safety joint includes a mandrel assembly slidably disposed in a case assembly such that a chamber is defined therebetween. The chamber is filled with a volume of fluid so that the mandrel is held in a first operating position. When in this first position, the mandrel is in splined engagement with a nipple at the lower end of the case assembly. Upon application of a predetermined tensile load on the tool string, a rupture disc in communication with the fluid chamber is ruptured so that the fluid is vented therefrom. When the pressure is thus released, the mandrel assembly is moved to a second position in which it is further extended from the case assembly. In this position, the mandrel assembly is no longer in splined engagement with the nipple, but a series of lugs prevents relative rotation between the mandrel assembly and an upper portion of the case assembly.

Abstract: A tube coupling comprising a first and second tubular member the first tubular member having a bell end and the second tubular member having a pin end for telescopic engagement within the bell end of the first tubular member. A deformable band secures the first and second tubular members in telescopic engagement and prevents relative movement therebetween. Each tubular member is provided with an annular ridge. These ridges are juxtaposed when the first and second tubular members are telescopically engaged. A deformable band having a longitudinal groove formed therein has a connector loop at one end; and a projection extending outwardly from the opposite end. The band is detachably securable around the telescopically engaged tubular members. The connector loop and projection of the deformable band cooperate to tightly secure the band around the telescopically engaged tubular members, trapping the annular ridges within a longitudinal groove, for preventing relative movement of the tubular member.

Abstract: A retaining ring of an eyeball return fitting of the type used in swimming pools and spas is provided with a releaseable or breakaway cover cap. The cap closes the end of the return fitting during construction. This permits the finish work for the cement and plaster stages of the pool construction to be effected without the danger of cement or plaster getting into the fitting during construction. After construction has been completed, the cap is released and drops away, carrying with it any cement or plaster which may have hardened on it during construction.

Abstract: The invention refers to a coupling device for fluid conduits suitable for cases in which uncontrolled tamperings of the coupling ought to be avoided. The device includes a head provided with a coupling thread for a sleeve which incorporates a straight-profiled dentation, while between the sleeve and the head there is a complementary ring provided with another dentation. The dentations are oriented to permit the sleeve to turn in a tightening direction and to prevent it from turning in the opposite direction at the end of the coupling phase by means of angular fixing means consisting of a plurality of lugs arranged on the perifery of the complementary ring. The dentation at the front of the sleeve and the dentation of the complementary ring cover these elements totally or in part.