Abstract: A quick-disconnect coupling for a pair of telescopic slidable tubular members has an annular garter spring trapped in a spring housing carried by one of the tubular members. The garter spring is adapted to be lodged between a right-angularly disposed flange on the spring housing and an upwardly-inclined annular flange formed on the end of the other tubular member. The respective flanges are arranged transverse to each other. The components of the coupling are formed conveniently and economically, without the necessity for expensive metal-forming dies, and are easily assembled.

Abstract: A readily assembled and disassembled coupling designed to sustain both axial and torsional loads. The coupling has two tubular elements that are held together by a locking ring inserted from outside the coupling after the connection is made. The end of the first tubular element fits into a section of enlarged diameter in the end of the second tubular element. The shoulder in the bore of the second at the transition point between the enlarged and normal diameter is formed into a helix. A matching helix is formed on the edge at the end of the first element. A peripheral annular groove is provided in the outer diameter of the first element and a similar groove is provided in the inside diameter of the second element. When the two elements are fitted together with their helices in contact to make the connection, the groove in the second element overlies the groove in the first element. A slot in the wall of the second element provides access to the grooves to permit the insertion of the locking ring.

Abstract: Compact, low cost connector system for flexible tubing is adapted to removably connect a length of flexible plastic tubing for rotational but not axial movement to a recessed opening in a body member such as a pneumatic valve, a fitting, or an air cylinder. A generally cylindrical, hollow plastic sleeve member surrounds the tubing, and is firmly anchored to it by a U-shaped metal retaining clip which is slidably movable in, and retained by, a pair of facing slots located near the outer end of the sleeve member. The slots are located in each of two legs of the sleeve which are spaced from each other except at the sleeve's inner end where they are joined. The sleeve member is assembled to the recessed opening by squeezing its legs together to allow opposed projecting tabs on each of the legs to enter the opening. The legs are then released so the tabs can snap into, and be retained by, a radially extending recess means in the wall of the opening.

Abstract: An improved quick connect coupling is provided for releasably connecting a pair of conduits, such as ordinary garden hose. The coupling comprises interlocking male and female fittings adapted for respective connection to a pair of hoses, wherein the male fitting includes a male member with an external circumferential groove for axial alignment with a generally opposed pair of arcuate slots in a female member on the female fitting. A C-shaped retainer is carried about the female fitting and includes a central spring base supporting a pair of locking arms which terminate in free ends having axially projecting lock tabs at the radially inner edges thereof, wherein these locking arms extend through the arcuate slots to position the arm free ends in engagement with radially oriented cam surfaces on the female member. In a normal unstressed condition of the retainer, the radially inner edges of the locking arms including the lock tabs extend into the male member groove to lock the coupling.

Abstract: The connection system connects a block (1) to a plate (3), each of which has a compressed air orifice. The block has a slideway for receiving a square section projecting portion on the plate, e.g. by sliding in a direction F2. Strips (6) are then slid into the assembly along a perpendicular direction F1 to lock the assembly. This system enables blocks to be removed from fixed metal pipework (5) without having to loosen the pipework. Also, because of the square section of the projecting portion, the block can be slid onto the plate in any of four different orientations, which can help in placing operator controls or instruments in more convenient positions.

Abstract: A novel pipelock comprising a first pair of rings facing each other axially, with the inner diameter of each ring at the outer face being smaller than the inner diameter of each ring at the inner face, each of said first pair of rings comprising at least two circumferential parts, means to restrain longitudinal movement of facing circumferential parts outwardly from each other, at least one second ring comprised of at least two circumferential parts connected to each other, outwardly surrounding said first pair of rings, and constraining outward radial movement of said first pair of rings.

Abstract: A staple coupling of the kind comprising interfitting male and female members for the connection of a hose within a fluid system, the members including respective external and internal circumferential grooves which register with one another when the members are fully engaged and holes on the female member to receive a staple, the holes being positioned and arranged so that when the staple is inserted into the holes the staple engages the registering grooves on the members to prevent separation of the members; a sealing O-ring provided on at least one of the members to provide a fluid tight seal between the members, and a generally U-shaped staple to prevent separation of the members; wherein at least one of the staple, the circumferential groove and the holes to receive the staple is shaped so as to allow limited axial movement of the male and female members in a separating direction to a locked position when the staple is fully inserted whereby the staple cannot be removed until the members are moved back to

Abstract: A quick connect coupling is provided for quick and easy connection or disconnection of a pair of conduits, such as ordinary garden hose. The coupling comprises interlocking tubular male and female fittings adapted for respective connection to a pair of hoses, wherein the male fitting includes a male member with an external circumferential groove positioned for axial alignment with a generally opposed pair of arcuate slots in a female member on the female fitting. A generally C-shaped retainer is carried about the female member and includes a pair of locking arms projecting from a central base generally through the arcuate slots with their free ends engaging radially oriented cam surfaces on the female member. The locking arms are normally biased radially toward each other to position their radially inner edges within the circumferential groove in the male member to lock the coupling together.

Abstract: A blow-out preventer for attachment with a tubular member of a well for containing well pressures within the well as needed, having a body adapted to receive a ram body mounted therein for movement between an open and closed position. The preventer further includes an actuator body member mounted with the body adjacent the ram bore and having urging means therewith for urging the ram body between such open and closed positions and alignment means with the actuator body member and the ram body for ensuring proper alignment and positioning of the ram body with respect to the ram bore and the axial bore of the tubular member. The actuator body member has fastening means that fits into connecting means in the preventer body. The two bodies are secured by securing means installed in said connection means and engaging said fastening means.

Abstract: A sheet is disclosed for forming a plurality of coupling bands for connecting the ends of corrugated drain tubes having external grooves. The sheet includes a plurality of parallel lines of hollow lugs. The lugs are separated from each other by an integral web of plastic material. The lugs in each line are spaced sufficiently to allow the resulting coupling bands formed from the sheet to bend freely about the drain tubes to which the couplings are applied. Each line of hollow lugs includes a plurality of spaced-apart columns of hollow lugs aligned in end-to-end relation. Each column includes, in sequence, a first end lug formed to include a flat end wall upstanding in substantially perpendicular relation to the plastic web, a plurality of intermediate lugs of generally frustro-pyramidal shape, and a second end lug formed to include a flat end wall upstanding in substantially perpendicular relation to the plastic web.

Abstract: A quick-disconnect device for coupling segments of a diver's umbilical ho includes separable rectangular bodies carrying complementary hose couplings spaced therealong. The bodies, which have nested rim and reduced portions, are biased toward separation by a rectangular, flat-type spring and releasable retained against separation by a retractable retaining pin extending diagonally therethrough and normally locked against retraction by partial rotation.

Abstract: A hose coupling having a spigot member to be inserted into a socket in the body of the coupling. The member having a pair of legs diverging from a base forming a circumferential portion of the body. The legs engage in a circumferential groove in the spigot, so that by pressing on the circumferential portion the legs diverge to release the spigot.

Abstract: This disclosure relates to a fluid coupling including a nipple, an adapter sleeve, and a U-shaped clip for fastening the nipple and the sleeve together. The nipple has an annular rectangular-shaped groove therein and the sleeve has two circular bores therethrough. The inner part of the clip that engages the groove has a generally rectangular shape to match the groove, and the outer part of the clip is curved to match the curvature of the bores. The sides of the clip are treated to improve their resistance to deformation and stress failure.

Abstract: A hydraulic connecting device is disclosed, the device being for interconnecting a multi-line hose and a coupling device. The hose has a plurality of flexible hydraulic conduits bunched together within a protective sheath. The coupling device has a plurality of plug pins held within a casing by a retaining disc. The casing is attached to the protective sheath by the connecting device. The connecting device is constituted by a clamping sleeve, which is connected to the protective sheath, and a connecting sleeve, which is connected to the casing. The two sleeves are telescoped together at end portions thereof and are joined together by means of a rotary connection which resists tensile forces. The rotary connection is constituted by a releasable securing element.

Abstract: A quick connector assembly for use with tubular conduits is disclosed as comprising a housing having an axial bore for receiving one end of the conduit, an elastomeric ring-like seal is disposed in the bore for providing a fluid tight seal between confronting portions of the conduit and the housing, an annular bushing is disposed in the bore for positioning the seal and for guiding the one end of the conduit into nesting relationship with the bore, and a retainer is detachably secured to the housing and is cooperable with an annular projection on the conduit for securing the conduit in its operative position within the bore, the retainer is formed from a cap having several lateral slots which cooperate with a groove formed by the housing such that an external clip having two legs may be used to secure the cap to the housing.

Abstract: A swivelable quick connect assembly for use with tubular conduits is disclosed as comprising a housing having an axial bore for receiving one end of the conduit, an elastomeric ring-like seal is disposed in the bore for providing a fluidtight seal between confronting portions of the conduit and the housing, an annular bushing is disposed in the bore for positioning the seal and for guiding the one end of the conduit into nesting relationship with the bore, and a retainer is detachably secured to the housing and is cooperable with an annular projection on the conduit for securing the conduit in its operative position within the bore, the retainer having resilient deformable portions which are adapted to snap over the locking wall upon insertion of the conduit into the housing bore.

Abstract: A pipe joint comprising a joint body provided with an insertion hole into which a pipe to be joined is inserted to be retained and a screw member adapted to engage with a fixing hole bored in the joint body and to form a recessed part on the outer periphery of the pipe by the engagement thereof with the joint body. Turning direction of the screw member conforms to pipe insertion direction. When joining two pipes together, a set of screw members for tightly fixing the pipes to the joint body respectively are provided in such an arrangement as perpendicular with each other. A boring member such as a drill is provided on the tip of the screw member so as to form the recessed part on the periphery of the pipe by cutting.

Abstract: A boat propeller device including an inner hub wall defining an opening for a shaft and having an outer circumferential groove, a partly flexible, elongated and unitary plastic locking member partially located in the outer groove. The shaft has an inner circumferential groove in its surface for partially receiving the locking member therein. An access port enables introduction of the locking member into an inner channel defined by the inner and outer grooves in juxtaposed position. The locking member includes spaced indentations for increasing the flexibility thereof; the oppositely disposed indentations forming reduced cross-sections thereof and defining flexible bridges, and between each two adjacent indentations rigid link members are formed and are of a trapezoid-shape cross-section. One of the terminal link members is releasably affixed to the hub and spline connection blocks rotational movement between the hub and shaft.

Abstract: A coupling between a stainless steel exhaust manifold of a recuperative heat exchanger and a plastic flue pipe. The internal integrity of the manifold is maintained by spot welding a mounting bracket to the outside thereby defining a slot between parallel portions of the bracket and the manifold. The flue pipe inserts through coaxial circular apertures in the bracket and the manifold. A shoulder of an annular protrusion on the outside of the flue pipe presses against an O-ring seated in an inwardly directed step of the circular aperture in the manifold thereby providing an airtight seal. The flue pipe is secured in the described position by a bifurcated retainer clip slid down into the slot thereby engaging portions of the opposite shoulder of the annular protrusion.

Abstract: A clip received in a groove about an engine fuel injector and rotated into grooves in a fuel rail body secures the injector in its socket in the fuel rail body.

Abstract: Compact, low cost connector system for flexible tubing is adapted to removably connect a length of flexible plastic tubing for rotational but not axial movement to a recessed opening in a body member such as a pneumatic valve, a fitting, or an air cylinder. Preferably, a cylindrical sleeve member having transverse slots extending completely through opposed walls of the member is pre-positioned in a stepped recessed opening in axially spaced relationship with an elastomeric O-ring sealing member. The sleeve member is preferably retained in a fixed relation relative to the body member by a U-shaped clip. When one desires to attach a length of tubing, the U-shaped clip is removed and the tubing is inserted into the sleeve and O-ring such that its tip portion goes beyond the O-ring into a small central recessed aperture formed in the body member.

Abstract: A pipe connecting arrangement involves two pipes of different diameters which are inserted into one another with radial play. The radial space between the two pipes is filled with a packing sleeve and the connection is completed by one or two U-shaped tension hoops inserted through one or two slots in the larger diametered pipe and engaging the packing sleeve.

Abstract: A fluid coupling for a conduit which features a quick connect-disconnect construction between first and second coupling members. The first coupling member is connected to the conduit and is generally cylindrical, having a main portion and a reduced diameter portion. Peripheral grooves on the reduced portion contain sealing rings which form a fluid-tight seal with a second coupling member that fits over the first member, the sealing rings contacting an internal bore. The principal seal is provided by a resilient O-Ring which is located in the groove located at the intersection of a wall that intersects the reduced diameter portion of the first coupling member. This contacts a shoulder formed on a wall which intersects part of the bore of the second coupling member. This provides both axial and radial compression between the coupling members. The second peripheral groove is spaced from the first groove and contains another O-Ring as well as a fluoroelastomeric backup ring to enhance the seal.

Abstract: The cover is fixed without the use of bolts. On each side thereof, an almost closed groove is defined in one half by the peripheral portion of the cover and in the other half by the peripheral portion of the body. This groove extends only in a part of the major length of the valve and receives two round locking bars which are inserted in the groove by way of a center cavity. An outer sealing element hermetically closes the gap between the cover and the body and the two cavities. Application of the device in buried valves exposed to corrosive atmospheres.

Abstract: A nozzle retention system is disclosed which serves to retain a jet nozzle in a drilling bit and also align the nozzle with respect to the bit cutters, said system utilizing a deformable pin and interacting channels in the nozzle and the bit nozzle bore.

Abstract: A swivelable quick connect assembly for use with tubular conduits is disclosed as comprising a housing having an axial bore for receiving one end of the conduit, an elastomeric ring-like seal is disposed in the bore for providing a fluidtight seal between confronting portions of the conduit and the housing, an annular bushing is disposed in the bore for positioning the seal and for guiding the one end of the conduit into nesting relationship with the bore, and a retainer is detachably secured to the housing and is cooperable with an annular projection on the conduit for securing the conduit in its operative position within the bore, the retainer having resilient deformable portions which are adapted to snap over the locking wall upon insertion of the conduit into the housing bore.

Abstract: A random length of corrugated hose forms part of a male/female coupling. According to the preferred embodiment the male connector is formed around the corrugated hose itself. One or more O-rings are seated in the exterior grooves closest to the end of the hose to be sealed. A split lock ring is then placed in one of the grooves behind the O-ring seals. The combination comprises the male portion of the invention which is received in a cavity in the female connector. A spring-loaded retaining clip is carried by a pair of parallel grooves in the female connector and adapted to close behind the split lock ring thereby preventing the female connector from disengaging from the corrugated hose. According to an alternative embodiment the O-ring seal may be placed inside the corrugated hose, thereby making the corrugated hose the female portion of the coupling which is adapted to receive a complimentary male connector.

Abstract: An automatic slack adjuster for a vehicle braking system includes a yoke assembly which is pivotally mounted on the adjuster body and in which is adapted to be connected to a push rod actuated by a fluid pressure actuator. The yoke assembly includes a recess having an entrance which is adapted to receive the end of the push rod. An adapter member is threaded on the end of the push rod received in the recess, and a U-shaped connector penetrates the body of the yoke to engage a circumferentially extending groove on the adapter, to thereby define a nonthrust transmitting connection between the yoke and the push rod. The yoke assembly defines a pair of thrust receiving surfaces which circumscribe the entrance to the recess, and a thrust washer slidable on the push rod is held at a thrust transmitting engagement with one of the thrust receiving surfaces by a nut which is threaded on the end of the push rod.

Abstract: Herein presented and claimed is a removable sleeve-to-shaft interlock for a dynamoelectric machine. The invention comprises: a shaft having a groove about its outer circumferential surface; a sleeve having a central bore for receiving said shaft therethrough, said sleeve having an eccentric groove about its inner circumferential surface; at least one detent, said detent being an arcuate spring having an associated radius smaller than the radius of the shaft and an associated height greater than the depth of the shaft groove, said detent depressible during assembly and disassembly; and means for circumferentially positioning said detent in the shaft groove, for example at least one spacer having at least one protrusion which mates with a similarly shaped channel in the non-eccentric groove. After assembly the detent straddles the interface between the shaft and the sleeve, being within both of the grooves simultaneously, thereby preventing axial movement of the sleeve relative to the shaft.

Abstract: A system for connecting corresponding edge areas of adjacent thin-walled bodies. Each edge area is provided with at least one bent notch portion which engages a corresponding bent notch portion carried by the other edge area, such that apertures provided in the notched portions are coaxially aligned to receive a common connecting member for securing the bodies together. A plurality of such notch portions may be spaced along the lengths of the corresponding edge areas to define a series of coaxial apertures through which an elongate connecting member is inserted for securing the bodies together.

Abstract: An arrangement for connecting corresponding edge areas of thin-walled bodies together wherein each edge area is provided with bending sections and empty sections alternately disposed to each other with respect to the corresponding bending and empty sections of the other edge area. The bending sections of the other edge area are disposed through the corresponding empty sections of the edge area whereby the bending sections collectively define a common channel through which an elongate connecting member is inserted to secure the bodies together.

Abstract: A coupling for connecting the ends of medical apparatus tubes. The coupling has male and female conical mating elements on first and second end pieces. Each end piece is adapted to receive the end of a tube. The end pieces are locked together to prevent unintentional separation. Locking is achieved by at least one finger extending from one end piece to the other end piece. The finger, in addition to its locking function, resists tension when tensile stress is applied to a coupled tube.

Abstract: A tape joint for cylindrical members is provided wherein a flexible tape member is inserted into a cavity between telescoping first and second cylindrical members in a twisted manner so as to lock the members together as a unit. The tape member is manually slip fitted into position and is provided with a handle for aiding in the insertion and removal of the tape member.

Abstract: An assembly for connecting together fluid-conducting spigot and socket members employs a U-shaped locking clip with parallel legs sliding in chordwise passages of the socket member. The spigot member has an external groove which is engaged by the legs of the locking clip intruding into the socket when the spigot is inserted into the socket and the clip is slid into its operational position. The clip can be retained in this position by the "snap" engagement of the base portion of the U-shape with a transverse groove in the face of the socket member. The assembly is particularly useful for connecting a demand valve into the facemask of a breathing apparatus.

Abstract: An electrical duct connector has a pipe form of essentially the same cross-section geometry as duct ends to be connected thereby, but of an outer wall diameter (or the like) corresponding to the interior diameter or the like of the duct ends so that the connector fits snugly into the duct ends. The connector may have two, three or more ends and is made of multipiece form with elongated tongue and groove connections in mating wall portions including, preferably, gaps near the ends of the tongues and teeth from the opposite portion of the split construction of any given connector to engage the gaps and preferably also comprising exterior catches for duct ends with reliefs in the connector wall to make the catches resilient and further locking element such as a pin connection at an angle elbow (if any) of the split-construction connector.

Abstract: The specification describes a connector fitting for flexible corrugated tubing having parallel, coaxial corrugations; the connector comprising a bushing with a housing for accommodating in use the end of a length of corrugated tubing which housing is provided with at least one opening for receiving a locking element which is generally C-shaped in form and has resilient legs, the inner surface of the locking element is provided with a plurality of ribs the thickness of which corresponds approximately to the spacing of adjacent corrugations of the tubing and the opening in the housing is bounded by a pair of bridge pieces separation of which is substantially the same as the distance between the outermost surfaces of the legs of the locking element. A seal may be provided which in use lies between the outer surface of the corrugated tubing and the inner surface of the housing, the seal having a toroidal end part lying between the end of the corrugated tubing and a stop formed in the housing.

Abstract: A fluid actuated cylinder assembly adapted to be connected to a pressurized fluid system which includes a cylinder barrel closed at one end thereof and open at the opposite end, the cylinder barrel having an annular groove formed in the interior circumferential surface thereof and a slot formed adjacent the opposite end, a cylinder head removably mounted in the opposite end of the cylinder barrel, the cylinder head having an annular groove formed in the exterior circumferential surface thereof in alignment with the annular groove formed in the cylinder barrel and an axially extending opening formed therein, a cylinder rod slidably mounted in the axially extending opening formed in the cylinder head, a piston connected with the cylinder rod within the cylinder barrel to form a first and second chamber, a ring member positioned in the annular grooves formed in the cylinder barrel and cylinder head slidable through the slot formed in the cylinder barrel and port means formed exclusively in the cylinder head for

Abstract: The combination of a crank arm having a crank pin, a drive link carrying a bushing receiving the crank pin, and a retainer clip adapted to coact with the bushing and crank pin to retain the crank arm and linkage arm in assembled relationship. The clip may be preassembled to the bushing before the crank pin is inserted through the bushing. If so, as the crank pin is inserted through the bushing, a pilot portion on the crank pin is effective to radially spread the clip until a retaining groove on the crank pin becomes aligned with the clip. The clip then snaps into the groove and interlocks the bushing and crank pin against substantial axial displacement relative to one another.

Abstract: The invention relates to a coupling system for coaxial hoses adapted to feed fluid into hydraulic machines and apparatus and to provide an exit for same, such a system ensuring conveniently and speedily under good operative conditions, a disconnectable fitting of the ends of the input and output pipes respectively on a body such as a union connected in its turn with a supply of a compressed fluid, and with a handtool such as hydraulic shears or pruning-scissors or else a machine-tool such as an air-hammer or a hydraulic machine, to be used on the yard.

Abstract: A mechanical pipe connector which is especially suited for interconnecting sections of large tubular piling. The connector includes a tubular inner member having a wall with a first annular groove cut in the outside face thereof, and a tubular outer member having a wall with a second annular groove cut in the inside face of the wall. At least one hole extends from the second annular groove through the wall of the outer member to the outside thereof. The inner member fits into a passage in the outer member with the first and second annular grooves juxtaposed to form a common annular channel between the inner and outer members. A flexible locking tape is inserted through the hole in the outer member and into the annular channel to lock the inner and outer members securely together. The locking tape and the annular channel each have a polygon cross-sectional shape with the polygon having obtuse angles to minimize the stress concentration on the loading tape and on the walls of the annular channel.

Abstract: A fitting for connection to a metal plain end pipe includes a generally cylindrical sleeve section sized to receive and cradle a pipe end portion, an annular seal in the sleeve section for forming a fluid-tight connection between the pipe end portion and the fitting and a locking rod extensible into the sleeve section. The locking rod is received into a bore extending substantially tangentially through a wall of the sleeve section and communicating with a sleeve section interior surface over less than a cross-sectional circular periphery of the bore whereupon a segment of the wall of the bore forms an intersection with the interior surface along the length of the bore. The locking rod has a metal cutting tip for tangentially cutting a groove along the intersection in a pipe end portion received in the sleeve section. The locking rod is securely retained in the groove as a key for firmly locking the pipe into the fitting.

Abstract: A plastic conduit section of the bell and spigot variety for protecting electrical and communications cable, featuring paired, parallel, ridged spigots or channeled spigots, slotted bells, and resilient tie rods or keys to join adjacent conduit sections together. Interrupted peripheral keyways and resilient keys are used to join adjacent conduit sections together. These conduit sections may be internally divided into smaller subcompartments. A circumferential gasket seals the joint between the spigot and the bell ends. Flanged end surfaces limit axial movement and deflection. Lipped ends index and seat adjacent conduit sections for subsequent joining.

Abstract: Multiple wall drill pipe adapted for use in a drill pipe string comprising an outer pipe member; an inner pipe member disposed within the outer pipe member; and means for releasably connecting the inner pipe member and the outer pipe member in fixed axial relationship under force loads applied in use during a drilling operation while enabling relative rotary movement between the inner pipe member and the outer pipe member during a rotary drilling operation to relieve torsional stress thereon, and for permitting the removal of the inner pipe member from the outer pipe member by relative axial displacement therebetween caused by application to the inner pipe member of only an axially directed force load in excess of the axially directed force loads applied to the inner pipe member in use during a normal drilling operation.

Abstract: A medical tube connecting device which includes a tube connector and a security connection member for connecting a medical tube, such as a tracheal tube, to a slip-fit coupling adapter of gas supply equipment. The connector has slip-fit couplers for connection with the adapter and the tube, and a flange with a pair of diametrically opposed slots extending inwardly from its outer periphery. The security member is an elastic strap having opposed end enlargements. The strap, in use, extends around a portion of the coupling adapter and the ends of the strap are received in the flange slots with the enlargements maintaining the strap in place.

Abstract: A coupling arrangement for detachably connecting a driven unit to a drive unit, which is connected to the housing of a power source. Mounted to the housing is a frame, having any desired shape, being open toward the center, and comprising two flat pieces which are connected to one another along their outer peripheral edges. The inwardly directed portions of the pieces are spaced from one another to form a slot. A locking slide open toward the center and having no bottom side is insertable in the slot. The sides of the slide and the inwardly directed portions of the frame have grooves which are uniformly dimensioned and symmetrically distributed essentially identically to each other. In at least one not fully inserted position of the slide, its grooves are aligned with corresponding grooves of the frame pieces. A drive gear is rotatably mounted to said housing in the vicinity of the open center of the frame and is operatively connected to the power source.

Abstract: A joint for connecting first and second pipes, each including spaced inner and outer pipe members and a foam material filling the space between the inner and outer pipe members. The inner pipe members of the two pipes are adapted for conveying a fluid medium, the inner pipe member of the first pipe having a flared female end and the inner pipe member of the second pipe having a male end sealably inserted in the female end. The foam material in the second pipe is provided with a recess in which the first pipe extends so that the foam material in said first pipe confronts the foam material in the second pipe. The outer pipe member of the first pipe has an annular groove therein which faces outwardly and a coupling in the form of a separate tubular member secured to the second pipe or a thickened portion integral with the second pipe surrounds the outer pipe member of the first pipe and has an annular groove therein which faces inwardly and is in registry with the annular groove in the outer pipe member.

Abstract: The improvement relates to fluid couplings utilizing components interconnected by an elongated pin or staple wherein insertion of the staple after assembly of the coupling parts maintains the parts in fluid tight relationship. The invention includes the forming of fluid coupling members permitting accomodation of staples having various cross sectional configurations, and the staple of the invention is of a D cross sectional configuration providing optimum resistance to fatigue failure, improved tensile strength, and consistent retention within the fitting under operative conditions.

Abstract: A coupling device is provided for connection to a plurality of hydraulic conduits which are bunched together to form a multi-core duct. The coupling device has a casing which houses a plurality of plug pins, the plug pins each being connectible to a respective one of the conduits. A holder is provided for holding the plug pins, the holder being rotatably mounted in the casing. A connector, which is formed in two detachably interconnected parts, is also provided for connection to the coupling device.

Abstract: A female coupling adapted for use with prior art male stems of the collared type, the coupling having a stem-receiving bore and two substantially parallel slots that intersect circumference portions of the bore. Two leg members of a generally U-shaped staple are inserted in and reciprocally movable in the coupling slots. Leg members have facing, substantially centrosymmetrical slots that open with the intersecting circumference portions of the bore when the staple is in the open and unlocked position. Locking tab portions of the leg members intersect the bore at the intersecting circumference portions when the leg members are reciprocated to a lock position and a spring means interconnecting the leg members retain free ends of the leg members against the coupling.

Abstract: A single element print head having an apparatus for firmly and releasably attaching itself to the drive shaft of a typewriter. The body of the print head is provided with a central opening therethrough for receipt of the drive shaft. A cap is secured on the body around one end of the opening with the purpose of slidably holding a manual slide member in its guide recess and fixedly holding a base portion of a hair pin shaped spring in its holding groove. The spring has a pair of arms for firmly fastening therebetween, and for releasing the drive shaft by virtue of its resilience and the action of a pair of cam surfaces. The pair of cam surfaces are formed in the bottom portion of the slide member, diverging from one end to the other end like a front portion of a bullet, for expanding the arms from each other to release the arms from the drive shaft by means of the slide movement of the slide member.