Abstract: There is provided a process for providing a metal connector fixed to a pipe of composite material and a pipe thus made.A pipe carries at one of its extremities a metal connector, and a first film of elastomer being interposed between the two and adhering to each of them an adhesive. At the level of this extremity, the pipe also carries a metal casing which is held solidly on the connector by a band and a second film of an elastomer which is interposed between the casing and the pipe and adheres by means of an adhesive to each of them.The pipes according to the invention are suitable for use in offshore oil exploration.

Abstract: A one piece hose end fitting in which a ferrule is secured by swaging to an insert prior to the fitting being inserted in the end of a hose has a ferrule comprising a ferrule body and a ferrule collar intermediate the body and the insert, the ferrule body before swaging having an internal bore throughout its length corresponding to the bore required to be swaged onto the hose and the ferrule collar fitting within the body before swaging and being adapted to be swaged onto the insert when the body is swaged onto the collar.

Abstract: A coupling joint for nylon-lined hose comprising a nipple having annular ribs thereon, an o-ring seal disposed in a groove between adjacent ribs and a metal sleeve crimped over the hose. The diameter of the ribs is greater than the ID of the hose requiring a forced insertion therein. The volume of the uncompressed seal is greater than the volume of the groove in which it is disposed. The crimps in the sleeve disposed over the ribs, place the inner liner into contact with the nipple for substantially the entire length thereof in gripping engagement with the ribs and compressing the seal completely into the groove.

Abstract: A reusable end fitting may be attached quickly and easily to a hose without requiring production machinery. The end fitting has a first part with a collar which grips the hose against a second part with a barbed end. When two wrenches are used to turn one part onto the other part, a pilot end of a hose is gripped and pulled onto the barbed end. One embodiment provides a collar with springlike qualities that compress the hose against the barbed end. Another embodiment has threads inside the collar to propel the hose onto the barbed end.

Abstract: An electrode device for electrically heating underground deposits of hydrocarbons in which an insulated pipe is disposed between an electrode and a main guide pipe. The two end portions of the insulated pipe are formed as flanges having outer circumferential surfaces counter tapered to diverge at a predetermined angle toward the end portions. Shock absorbers are disposed between fastening fixtures and the counter-tapered surfaces of the insulated pipe and the fastening fixtures are coupled to connectors on the main guide pipe and the electrode through bolts. If desired, the abutting surfaces of the main guide pipe and the electrode can be formed counter tapered similarly to the counter-tapered surfaces of the insulated pipe.

Abstract: A method for making a powdered metal ferrule by compacting and sintering powdered metal to have a density of at least 80 percent of the theoretical maximum compacted density and an elongation of at least 2.9 percent; and powdered metal ferrule having a density of at least 80 percent of theoretical maximum compacted density and an elongation of at least 2.9 percent.

Abstract: A deformable ferrule for use in coupling hose which has a sidewall portion that decreases in thickness going longitudinally of the ferrule from a fitting end to a hose end. A method of deforming an exterior frustro-conical surface portion of the ferrule to a generally cylindrical shape while simultaneously forming an inside surface portion of the ferrule to a generally frustro-conical shape.

Abstract: A hose coupling includes an insert and a sleeve extending over the outer surface of the hose. The sleeve is crimped radially inward to secure the coupling to the hose and the sleeve has a plurality of grooves on the outer surface increasing in depth progressively away from the end of the hose to reduce the amount of material in the wall of the sleeve and thereby reduce the amount of force required to crimp the sleeve onto the hose.

Abstract: An end connector including a threaded nipple end that cooperates with a spring and swage sleeve to secure the end connector to a convoluted plastic tube. The swage sleeve fits over the spring in the convolutions of the plastic tube in order to secure the plastic tube to the nipple by the spring forcing the tube into the threads of the nipple.

Abstract: A reusable type hose end fitting comprising a through-bored stem portion and a ferrule portion which is removably screw-coupled to the stem portion. The stem portion has a first zone which is formed with a male screw thread and a second zone which locates within the bore of a hose. The ferrule portion has a first zone which is formed with a female thread for engagement with the male thread of the stem portion and a second zone which locates about the second zone of the stem portion to define a generally annular space in which an end portion of the hose locates when the fitting is assembled to the hose. The second zone of the stem portion is formed with four tapered regions and with cylindrical lands which separate adjacent ones of the tapered regions.

Abstract: A two-piece self-locking end fitting is made from a collar which fits over the end of a plastic hose and an annularly serrated insert which fits within the hose. In one embodiment, after the collar is placed over the end of a thick-walled hose, the insert is placed inside the end of the hose. In another embodiment, an insert is first placed inside a thin-walled hose to give it added body and rigidity. Then, the collar is slipped over the outside end of the hose. In either embodiment, a swaging die is drawn over the collar to reduce its diameter and thereby capture the hose against the annular serrations of the insert. As the diameter reduces, an annular ridge in the collar is automatically canted into an annular valley in the insert to securely lock them together. After the cant takes place, further compression causes the ridge to elongate and lock the insert firmly so that it cannot move relative to the collar, which in turn provides the primary gripping force to hold the hose and fitting together.

Abstract: The invention pertains to a hose fitting particularly suitable with hose having a helical convoluted inner tube, and wherein the hose is formed of a synthetic plastic material. The fitting includes a tubular nipple having a helical projection upon which the hose inner tube is threaded, and a socket crimped upon the hose supported upon the nipple includes serrations for compressing the hose at predetermined locations. The nipple configuration aids in maintaining the hose upon the nipple in a fluid tight manner, and a socket tang receiving groove defined in the nipple axially maintains the socket in predetermined relationship to the nipple.

Abstract: In an oil pump inlet screen assembly adapted to be immersed in an oil pump and comprising a filter screen including a housing and a lift pipe adapted to be inserted at one end into an oil pump opening, the improvement wherein the housing and lift pipe are molded integrally of plastic material, and wherein the screen assembly further comprises a metal eyelet received over the pipe end and adapted to be press-fitted into the pump opening. The eyelet includes coaxial cylindrical portions respectively disposed internally and externally of the pipe end and an external flanged end portion which captures a circumferential rib on the outside of the pipe both to retain the eyelet on the pipe end and to function as a stop to limit press-fit insertion of the pipe end into the pump opening.

Abstract: A deformable metal or plastic tube, the nipple end of which is provided with a plurality of circumferential ribs or grooves and a plurality of aligned longitudinal projections to provide a rough surface over which a resilient rubber or plastic end section of a flexible hose is placed and inwardly compressed against said roughened surface by a sleeve or band to form a fluid-tight seal between the hose and the tube. The grooves or ribs on the nipple portion of the tube are formed by a plurality of radially inwardly pressing dies surrounding the tube on a mandrel. These dies not only reduce the diameter of the nipple but also form aligned rows of projections on the outer surface of the tube by extrusion of the metal between the sides of adjacent dies. One or more and preferably two compressions of the dies are made in different angular positions of the tube. The nipple portion is defined by a previously outwardly pushed bead flange inwardly from the end of the tube.

Abstract: A substantially tubular shaped insert (1) adapted to fit coaxially about the end of a hose and to be contracted against the hose by the shell of a coupling to provide an improved hose and coupling assembly for the conveyance of fluids under pressure. The insert has a separation space (2) in its wall that extends longitudinally along the entire length thereof and one or more longitudinally extending primary elongate openings (4) through its wall that are disposed in a substantial uniform array about its circumference. The longitudinal axis of space (2) and openings (4) are skewed from 0.degree. to about 45.degree. from the inserts central axis and the areas provided by space (2) and openings (4) are such that, upon contraction of the insert against the hose, portions of the wall of the hose are caused to extend into space (2) and openings (4) to provide an improved circumferentially uniform longitudinally extending engagement between the coupling and the hose.

Abstract: A connection at which two hoses or similar conduits are coupled includes a male coupling on one of the hoses and a female coupling on the other hose. The male coupling consists of a body that receives the hose and a tapered bushing which threads into the hose and spreads it outwardly into the body. The body has a threaded end section. The female coupling consists of a threaded ring having an inwardly opening groove, a ferrule that receives the hose and has at its one end a flange which fits into the groove of the ring, and a tapered bushing that threads into the hose and expands it against the ferrule. When the hose and bushing are out of the ferrule, the flange of the ferrule will fit into the ring, but when the hose is expanded outwardly by the bushing, the flange of the ferrule is captured in the groove of the ring. The ring threads over the threaded end section of the male coupling and forces the ends of the threaded section and the ferrule together.

Abstract: A ferrule for use with a male stem which together define a coupling for flexible hose, the ferrule including a sleeve having an inside surface from which extend a plurality of longitudinally oriented ribs that are circumferentially spaced from each other. The ferrule is preferably made by extruding a metal tube and forming a plurality of longitudinal ribs, circumferentially spaced from each other along thetube inside surface; and cutting the tube in desired lengths to define ferrules.

Abstract: A method for connecting a plastics pipe to a fitting incorporating an externally grooved insert. The insert, which is a tight fit in the pipe, is forced into the end of the pipe, and a sleeve, previously located on the pipe, is then forced to the end of the pipe so that the pipe end is tightly gripped between the insert and the sleeve. The insert is tubular and is provided with a plurality of circumferential grooves in its outer surface. Each groove has in axial section substantially straight sides and a straight base, the angle between the base and each side being obtuse. Insertion of the insert causes the external diameter of the pipe to increase so as to be greater than the internal diameter of the sleeve.

Abstract: An end fitting for a flexible metallic conduit comprises a tubular body having an external thread to enable the body to be screwed into an end of a conduit, a tubular sleeve having an external thread to enable the end fitting to be threadedly mounted on a support, and a rotary tubular collar threadedly mounted on a stationary projection of one-piece with the body. The collar has an inner circumferential tapered surface which bounds a wedge-shaped annular space with the externally threaded end of the body. The conduit is received in wedged, moisture-resistant engagement in the space. A stressed O-ring seal between the sleeve and the stationary projection provides another moisture-resistant seal.

Abstract: A coupling device fitted onto an end of a hose into which a barbed nipple is inserted. The device is a rigid ferrule providing along its inner side two cylindrical portions of different diameters that are joined by a frusto-conical portion. The ferrule has a spiral thread of constant pitch formed on and along the inner side of all the portions. The thread in the larger cylindrical portion presses a shallow mating thread into the outside surface of the hose and initially advances the ferrule along the hose. The thread in the frusto-conical portion presses a progressively deepening thread into the hose and increasingly radially contracts the hose into the voids between the nipple barbs. The thread in the smaller cylindrical portion holds the hose contracted into the voids.

Abstract: A connector for connecting a pipe to a hose comprises a cylindrical protrusion on the pipe supporting an outwardly flared frusto-conical nipple. The hose is to be placed over the nipple and a sleeve is provided having a corresponding frusto-conical bore with internal threading to enable the sleeve to be tightened on the nipple. The cone angle of the bore is not the same as the cone angle of the nipple.

Abstract: A hose coupling for permanent attachment to a hose having a reinforcing braid layer intermediate inner and outer layers of rubber or plastic has an outer sleeve which is crimped to the hose at at least three axially spaced zones. The coupling includes an insert inside the hose having axially spaced annular ridges engaging the inner surface of the hose. The outermost crimped zone overlies a ridge and the spacing between the crimped zones is greater than the spacing between the annular ridges to provide spaced inwardly progressive zones of progressively less crimping pressure.

Abstract: A push-to-connect fitting for sealed connection to a synthetic resin tube end. The fitting includes a body, an eyelet, a nut threadedly connected to the body, and a radially constrictible sleeve for retaining the tube end effectively positively within the fitting. The fitting is arranged to be connected to the tube end by a coaxial insertion of the tube end into the fitting with the tube end being received between the sleeve and the eyelet in moving to the fully inserted position. The sleeve is provided with annular gripping portions, one of which is slidably engaged by the tube end as it is inserted into the fitting. The one tube portion is arranged to be mechanically interlocked with the tube end as a result of an outward movement of the tube end from the fully inserted position whereupon the sleeve is concurrently urged axially outwardly with the tube end.

Abstract: Disclosed is a self tightening hose coupling which when applied to a hose comprises a floating sandwich like structure including a floating stem, hose, and tapered wedge segments which operate as a unit and float between a nipple and a compression sleeve. The compression sleeve has a tapered interior which matches the taper of the wedges and is constructed to permit the interior placement of a locking ring which operates against a split retaining ring mounted on the nipple thereby preventing the floating sandwich like structure from being pulled out when internal fluid or tensile pressures, occur under operating conditions.

Abstract: This invention relates to flexible high-pressure hoses of the kind having a wall made of elastomeric material which is strengthened by a stress-resistant reinforcement which is embedded in the wall and which is formed by at least two superimposed layers of cables inclined in opposite directions, with, at one end, an obturating or connecting device comprising a spigot which is inserted in the hose and an external clamping collar, the spigot and the collar having, on their adjacent surfaces, a channel in the one case and a corresponding ridge in the other.According to the invention, the channel and the ridge each have parallel clamping surfaces which are inclined in opposite directions and their radial height is substantially equal to or slightly greater than the thickness of the wall of the hose so that, in the state where the device is assembled to the hose, the crest of the ridge at least partly enters the channel.

Abstract: A coupling joint for thermoplastic hose comprising a nipple having annular ribs of approximately the same diameter as the hose I.D., for easy insertion into the hose, and a nut of rigid material threaded over the hose O.D. and radially opposite the ribs. The nut has a rounded tapered thread that deforms the hose material to fill the thread and to cause the I.D. of the hose to fill the spaces between the annular ribs. The nipple has a cylindrical portion at its end and the nut has a counterbore at its forward end and the hose is lightly gripped therebetween to avoid sudden stress concentration on the hose at the first rib.

Abstract: The device for providing a leak-tight coupling between a flexible tube and a rigid coupling connector comprises two coaxial components adapted to fit one inside the other. One component is mounted within the flexible tube while the other component is fitted around the tube. Longitudinal ribs formed on one component are adapted to cooperate with longitudinal grooves in the other component at the time of interengagement of the two components. The end of the tube is thus clamped and securely held in position.

Abstract: A singly or doubly tapered sleeve for gripping a hose in a hose coupler so that the gripping action on the hose is modified by changes in water pressure in and end pulls on the hose.

Abstract: A split, annular hose clamp for clamping one end of a length of thin wall, high pressure, fire hose on the nipple, or insert, of a hose coupling has relatively blunt, alternate ribs and grooves opposite to, fitting and mating with similar ribs and grooves on the nipple and has a pair of machine screws each extending across the butt joint of a pair of one-piece, substantially idential halves in which the heads are within the confines of the head recesses so that there are no sharp protuberances to cut fire hose. The screw heads are socketed for turning and the clamp is of less diameter than the coupling.

Abstract: A hydraulic hose having a core tube, a layer of reinforcing material disposed about the core tube and a protective sheath about the reinforcing material is provided with a coupling member on one end thereof having a nipple inserted in the core tube and a shell disposed about the sheath of the hose. The shell has a plurality of circumferentially spaced integral solid three-dimensional barbs piercing the sheath and embedded in the reinforcing material. The barbs are preferably either conical or pyramidal and have a pointed apex in order that they can pierce the reinforcing material when the coupling member is installed on the end of the hose by insertion between fibers without cutting or tearing the reinforcing material.

Abstract: A hose end unit comprises a reinforced hose end portion having at least an inner cylindrical elastomeric liner and a reinforcement layer and an end fitting being of the kind comprising an insert to enter into the end portion of the hose and a ferrule to surround the end portion of the hose. A plurality of radially inward projections are provided on the ferrule and the ferrule is swaged around the insert so that the hose end portion is gripped between the insert and the ferrule by the projections. The extrusion gap, as herein defined, is sufficiently narrow to substantially prevent flow of the elastomeric liner in the axial direction in use. Furthermore, the space between the ferrule and the insert in between two extrusion gaps is completely filled and the elastomer is compressed into cells delimited by the extrusion gap.

Abstract: A hose clamp utilizing two constricting band type hose clamps which are tied together by means of a strapping arrangement includes one clamp which surrounds the hose itself and is provided with protuberances which press into the outer surface of the hose to provide a strong gripping function which prevents the hose from moving with respect to this clamp while at the same time engaging the hose in a non-destructive manner. The hose if not grippingly interengaged with the clamp would under pressure slide out of the clamp and off of the fitting. A second hose clamp is clamped about the rigid fitting to which the hose is attached at a point beyond an enlargement in the fitting, so that this clamp cannot move past the fitting enlargement. The straps connecting the two clamps then prevent the hose from sliding off of the rigid fitting because of the restraint provided by the clamp which is secured beyond the fitting enlargement.

Abstract: A socket of a hose coupling for use with a nipple, the socket and nipple defining an annular space for receiving and gripping an end of a flexible hose. The socket has a first threaded portion with substantially sharp threads and a helically spaced second threaded portion with a sharp starting thread followed by blunt threads.

Abstract: The specification discloses an end fitting for a tubular hose which fitting comprises a rigid tubular insert to be inserted within at least one layer of the hose, a ferrule to surround at least a portion of the insert to grip the said layer of the hose between the ferrule and the insert, an annular sealing member of resilient material, for example rubber or soft thermoplastic, having a first annular lip to make a lip seal with an inner wall of the hose and a second annular lip to make a lip seal with an annular surface on the insert and spring means to maintain the lips in initial contact with the hose and the insert until sufficient pressure builds up in the hose to form lip seals between the lips and the hose and the insert.

Abstract: A hose construction comprising a core tube of either synthetic rubber or plasticized polyvinyl chloride plastic, a braided non-metallic fibrous reinforcement over the core tube, and an outer cover of either synthetic rubber or plasticized polyvinyl chloride plastic when the core tube is of polyvinyl chloride plastic, or the cover is plasticized polyvinyl chloride plastic when the core tube is synthetic rubber. The hose is particularly suited for use with barbed hose couplings insertable into the hose wherein the hose is held on to the coupling by contractive force of the hose on the barbs without the use of external clamps or gripping members on the hose.

Abstract: A fastening means, such as a hose end fitting comprising a metallic member formed with a serrated surface, and a layer of polymeric material arranged to cover the serrated surface, the surface of the layer of polymeric material both facing and remote from the serrated surface being capable of conforming substantially to the shape of the serrated surface.

Abstract: A hose coupling and joint in which a nipple insertable within a relatively hard but flexible tube, such as reinforced nylon, has a long smooth tapered portion at its outer end and a series of barbs at its inner end whose edges define a reverse taper, the barb of largest diameter being at the inner end of the smooth tapered portion and no larger than the inside diameter of the hose to permit ready insertion of the nipple into the hose without damaging the latter. The hose is held upon the nipple by a band type clamp that encircles the hose opposite the barbs.