Abstract: A connector for connecting a carbon dioxide cylinder to a carbonation apparatus includes a female part having a cylindrical recess for receiving a male part carried by the carbonation apparatus. An axially movable actuator extending through the male part projects through a central passage at the bottom of the cylindrical recess to engage a valve member for opening the valve. The actuator is in three parts and the center part itself forms a valve which is closed when the actuator is depressed for supplying carbon dioxide from the cylinder to a carbonation chamber but which, when the actuator is released, may open response to pressure in the carbonation chamber for supplying carbon dioxide therefrom to another part of the apparatus, such as a concentrate supply device.

Abstract: A tubular arthroscopic sheath having improved irrigating fluid flow characteristics and having a quick coupling socket adapted to quickly connect to and disconnect from an associated arthroscopic tool provided with a mateable, generally cylindrical plug member. The fluid flow is enhanced by centering projections on the sheath interior and by turbulence minimizing fluid ports. The socket comprises an open ended cylindrical housing provided with a plurality of annularly spaced, cylindrical locking pins slidable within throughbores in the housing wall, the throughbores extending radially from the housing axis and axially skewed with respect thereto. Each pin is provided with a notch in its cylindrical surface adjacent the most radially outward end of the pin. A pair of slidable coaxial cylindrical actuating members is adapted to engage all the notches and capture the pins. Moving the slidable actuating members away from the open end of the housing causes the pins to slide radially outwardly in the throughbores.

Abstract: A dispenser includes a spout attached to a fluid-filled bag and a socket that is removable attached to the spout. Valves in each of the spout and socket are biased closed but are opened when the socket is latched onto the spout, thereby providing a fluid path from within the bag to the outside. Keying components are provided on each of the spout and socket in order that a fluid connection between them is made only when the key elements match. The valve within the spout extends into the bag when opened and may include a sharp bag wall piercing portion.

Abstract: The invention pertains to a fitting consisting of a tubular body which may be readily installed over the end of a smooth wall conduit and removed therefrom and may be quickly connected to a standard unisex adapter mounted on the end of a hose line to place the conduit and hose line in fluid communication. The fitting includes a positive lock for attaching the fitting to the conduit and a flexible retainer is employed for safety purposes to resist "blow off".

Abstract: A fluid coupling for a corrugated pipe, comprising a coupling body having an axial through hole and a cylindrical outer peripheral surface, metallic seal means arranged at a pipe insertion portion of the axial through hole, for sealing an end portion of a corrugated pipe, a first sleeve having a first end portion, slidably mounted on the outer peripheral surface of the coupling body and urged axially outward, ring-shaped engaging members adjoining the first end portion of the sleeve and reducible in diameter, and retaining means surrounding the sleeve and the engaging members so as to be movable relative to the coupling body and the sleeve, the retaining means being adapted to reduce the diameter of the engaging members so that the engaging members are forced into root portions of the corrugated pipe, whereby the engaging members are held in a predetermined axial position.

Abstract: A fluid coupling comprising a coupling body having a cylindrical outer peripheral surface, clamp means for radially and inwardly clamping the outer peripheral surface of an end portion of a pipe, the clamp means beig axially immovable with respect to the pipe, a sleeve having engaging means and slidably fitted on the cylindrical outer peripheral surface of the coupling body, the engaging means being capable of axially moving the clamp means, a spiral guide groove formed on one of the sleeve and the outer peripheral surface of the coupling body, a pin member formed on the other of the sleeve and the outer peripheral surface of the coupling body and slidable along the guide groove, and means for preventing the sleeve and the coupling body from rotating relative to each other at a position reached when the sleeve is moved axially a predetermined distance, as the pin member is guided along the guide groove.

Abstract: A quick release collar for a weight lifting barbell includes a collar body, an axially movable sleeve and a plurality of radially movable balls which are cammed into frictional engagement with the bar. A tension ring rigidly attached to the sleeve has a tapered inner surface portion which controls the radial positions of the movable balls. A coil spring biases the sleeve and tension ring toward a locked position in which the movable balls securely engage the bar. The collar is easily unlocked with one hand so that it can be slipped off the bar.

Abstract: A female coupling component interacts with a male coupling component in a quick coupling. The female coupling component contains a centrally extending device and a sealing sleeve longitudinally displaceable relative to the device. The female coupling component contains a sleeve-shaped bearing component which constitutes a separate part on assembly. The bearing component supports the and the sealing sleeve. Support for the device is provided via radially extending elements (12). The bearing component carries a load-relieving device (13b) which is capable of interacting with the sealing sleeve, so that any forces (F) which occur inside the sealing sleeve are absorbed by the bearing component. The elements include a disc-shaped unit which extends diametrically in the recess for the bearing component. The unit exhibits a threaded bearing hole, in which the centrally extending device can be secured by means of a threaded end journal.

Abstract: A male quick disconnect SMA connector is provided which may be easily and readily installed on any existing female SMA connector by simply installing an adapter ring. The male SMA connector includes an inner sub-assembly comprised of an inner housing having a hermetically glass sealed male connector pin extending therefrom. An outer housing is received over the inner sub-assembly and a compressive spring is positioned in a cavity between the inner and outer housings. An insert is provided to the front of the outer housing. The insert includes several recesses for retaining rolling locking pins therein. These locking pins are raised when the outer housing is retracted (thereby compressing the spring) in a first direction. Thereafter, the locking pins are lowered into retaining openings in an adapter ring on the female SMA by releasing the outer housing to its original orientation with respect to the inner housing.

Abstract: This invention relates to a peripheral connector for a standard coupler, which permits the coupler to be remotely connectable and disconnectable. A male unit and a female unit of the invention enclose a male half and a female half of the coupler, respectively, and cover them with protective boots. A female unit projects an assembly, thereby opening the boot covering the female coupler half. The projected assembly pushes against portions of the male unit, opening the boot covering the male unit, and connecting the coupler. Disconnection is accomplished by moving the projected assembly in the opposite direction.

Abstract: An improved bulkhead mounting arrangement for a fluid coupling. The coupling body includes a centrally located externally threaded region having a predetermined axial length. First and second panel nut members are received on the threaded region for independent, selective axial movement thereon. One nut is received on either side of the bulkhead or panel so that axial adjustability of the mounting position is advantageously provided.

Abstract: A coupling includes a socket assembly having a locking or retaining assembly which holds a plug in the socket assembly. When the socket assembly is exposed to excessive heat, an element of the retaining assembly starts to fuse and loses its rigidity. The heat fusible element of the retaining assembly is then deformed to release the plug for movement from the socket assembly. In one embodiment of the invention, the heat fusible element of the retaining assembly is spherical locking or retaining balls which engage the plug to hold it in the socket assembly. In another embodiment of the invention, the heat fusible element of the retaining assembly is cylindrical locking or retaining pins which engage the plug to hold it in the socket assembly. In still another embodiment of the invention, the heat fusible element of the retaining assembly is a cylindrical locking sleeve which engages the retaining elements to hold them in engagement with the plug.

Abstract: A protective device for a quick connect coupling having selectively connectable male and female coupling bodies. The device includes a generally cylindrical sleeve extending axially beyond and radially outward of an end face of one of the male and female coupling bodies. The sleeve has a generally radially outward tapering conformation to add desired rigidity and bulk thereto. The protective device is designed to extend axially outward beyond either the female receiving member or the male stem portion in both a first outermost biased position and a second innermost position.

Abstract: The device comprises a plurality of pipes (7a to 7h) which may contain liquid under pressure and whose ends are radially fixed in a circle in a plane, a coupling unit (17) having an end communicating with another pipe (40) and rotatively mounted in the plane within the circle, means (16) for driving the unit in rotation, and means (21) for bringing its end in succession in coincidence with the ends of the plurality of pipes. The coupling unit is telescopic, its axis of rotation (12) extends through a bowl (2) and its movable end (26) communicating with the other pipe (40) cooperates with the ends of the pipes (7a to 7h) which are closed by automatic valves.

Abstract: A quick-connect coupling for a household faucet or the like and comprising a nipple and a fitting, features an improved seal which is a resilient annulus including a band portion adapted to seal against the inside of the fitting, a wing portion extending down from the top of the band portion and an end portion on the distal end of the wing portion, the end portion including an inward rib. Preferably the rib comprises an inwardly and upwardly facing quarter round, the underside of the end portion being inclined upwardly and outwardly when the fitting is installed on the nipple, whereby the water pressure forces the end portion inward to enhance the seal.

Abstract: A coupling fitting utilizing radially moving detents operated by an axially displaceable locking sleeve employs a safety lock lever pivotally mounted upon the locking sleeve engagable with a reference surface on the fitting when the locking sleeve is in the locked condition to lock the sleeve and give both a visual and physically discernible indication of the condition of the locking sleeve. The safety lever includes a handle which conforms to the configuration of the locking sleeve when the sleeve is in the release position, and the lever handle extends from the configuration of the locking sleeve in the sleeve lock position. Preferably, two locking safety levers are mounted upon the locking sleeve at diametrically opposed locations.

Abstract: A tool adapter assembly is provided for securing a machining tool, such as a tap, to a tool driving device. The tool adapter assembly is provided with one or more conduits extending from the portion which is connected to the tool driving device to the end of the tool adapter assembly adjacent to the tool such that a lubricant or coolant may be delivered through the conduits to the tool during the machining operation. Also disclosed is an extended tension/compression tap driver of limited diameter which includes a central bore disposed therethrough, such that when the above described tool adapter assembly is secured to the extended tension/compression tap driver, the coolant or lubricant can be supplied from the tap driver through the tool adapter assemby to the tool secured thereto.

Abstract: A temperature responsive, self-actuated nuclear reactor shutdown control rod assembly 10. The upper end 18 of a lower drive line 17 fits within the lower end of an upper drive line 12. The lower end (not shown) of the lower drive line 17 is connected to a neutron absorber. During normal temperature conditions the lower drive line 17 is supported by detent means 22,26. When an overtemperature condition occurs thermal actuation means 34 urges ring 26 upwardly sufficiently to allow balls 22 to move radially outwardly thereby allowing lower drive line 17 to move downwardly toward the core of the nuclear reactor resulting in automatic reduction of the reactor powder.

Abstract: A coupler of the type provided with a male fitting (11) which can be locked in a female fitting (7') by means of locking balls (9) housed in an annular row of holes (8) located in the female fitting (7').That part of the mobile tubular element (7) including between the annular row of holes (8) in which the locking balls (9) are housed and the nearest external shoulder (23) of the tubular element (7), which serves to support a return spring (16) is surrounded by a cylindrical bushing (24) whose inside end is provided with a flange (25) which is normally biased against the external shoulder (23) of the mobile tubular element (7), whose other end, which is normally biased against the internal tapered face (6a) of the internal rib (6) in the body (2), is internally beveled so as to provide a divergent face (26), whereby the length of the cylindrical skirt of this bushing (24) slightly exceeds the distance between the aforesaid shoulder (23) and the annular row of holes (8) housing the balls (9).

Abstract: The present invention relates to a fast connection with radially acting bolt-locking having a groove in the male element and a bolt in the female element that can receive an axial displacement and whose rear flank when locking engages in the groove of the male element, the bolt being urged into locking by a spring. According to the invention, at least two balls mounted with free radial play in the body of the female element are interposed between at least two points on the perimeter of the bolt symmetrical to the axis of thrust of the spring and a longitudinal ramp embodied on the inner surface of a sliding ring. The invention is applicable to fast connections for piping.

Abstract: A device is provided for spraying an anti-corrosion agent into the hollow spaces of a vehicle body wherein one spraying nozzle, selected from a set of spraying nozzles which are each specific to a portion of the vehicle body, can be selectively coupled fluidically and mechanically by means of a quick change slip-on coupling to a spraying nozzle holder apparatus. To facilitate quick spraying nozzle changes by one hand operation and to make it possible to employ robots for the purpose of changing nozzles, all spraying nozzles are retained next to one another in a defined manner by retainers on a support so as to be fixed but detachable from said retainers. This arrangement permits the coupling component part of each nozzle to be easily accessible to the spraying nozzle holder apparatus.

Abstract: A tension actuated fuel (e.g. gasoline) delivery hose uncoupler is disclosed in which, upon a predetermined tension load being applied to the delivery pump hose, the coupling will automatically uncouple thus releasing one end of the hose which, for example, may remain inserted in the fuel tank of a vehicle driving away from the fuel dispensing pump, and the other portion of the hose which is permanently affixed to the pump. The coupler includes normally closed checkvalves which, upon uncoupling of the coupler, close thereby preventing spillage of fuel. Further, the coupler is adjustable so that it may be calibrated to uncouple at predetermined tension loads. The uncoupler is structured so as to substanially eliminate the effects of fluid (e.g., gasoline) delivery pressure on the tension load required for uncoupling.

Abstract: A tension actuated fuel (e.g. gasoline) delivery hose uncoupler is disclosed in which, upon a predetermined tension load being applied to the delivery pump hose, the coupling will automatically uncouple thus releasing one end of the hose which, for example, may remain inserted in the fuel tank of a vehicle driving away from the fuel dispensing pump, and the other portion of the hose which is permanently affixed to the pump. The coupler includes normally closed check valves which, upon uncoupling of the coupler, close thereby preventing spillage of fuel. Further, the coupler is adjustable so that it may be calibrated to uncouple at predetermined tension loads. The uncoupler is structured so as to substantially eliminate the effects of fluid (e.g., gasoline) delivery pressure on the tension load required for uncoupling.

Abstract: An instant coupling comprises a male element and a female element which are locked together by two teeth (19) supported by flexible strips (18), which are normally in the disengagement position but urged into the engagement position by the action of an axially slidable outer collar (12), which is itself maintained in said engagement position by annular elastic elements (20) interposed between the strips (18).

Abstract: A socket assembly has a socket body into which a plug assembly is insertable to either a partially engaged position or a fully engaged position. When the plug assembly is in the fully engaged position, a seal engages a leading end of the plug assembly to block the leakage of fluid. When the plug assembly is in a partially engaged position, the leading end of the plug assembly is separate from the seal to enable fluid to be vented from the socket assembly. A plurality of locking elements are movable between a disengaged or release condition in which the locking elements are ineffective to hold the plug assembly in the socket assembly, a partially engaged condition in which the locking elements hold the plug assembly in its partially engaged position in which fluid can be vented from the socket assembly, and a fully engaged condition in which the locking elements hold the leading end of the plug assembly in engagement with the seal.

Abstract: A hose coupling has a tubular body (10) one end of which is intended to be attached to the end of a hose-pipe (14), and the other end of which has a bore (12) to receive the spigot (20) of a co-operating coupling (22) which is retained in the bore with a snap action. Three locking members (38) project into the bore (12) to hold the spigot (20) therein, and a locking sleeve (24) can be moved axially of the body (10) to force the locking members (38) to a release position, enabling the spigot (20) to be withdrawn from the bore to separate the couplings. The locking members (38) are interconnected by a ring (26) attached to the end of the body (10), and during assembly of the coupling the body (10) and the ring (26) interengage with a snap action to retain the ring (26) in fixed relationship to the body (10) and to hold the sleeve (24 ) captive on the body (10).

Abstract: A quick connect/disconnect coupling for carrying fluid under pressure includes cooperating body and stem coupling assemblies. The body coupling assembly includes an axially movable slide having a closed position engaging a body valve when the two coupling assemblies are disconnected, and having an open position spaced from the body valve when the two coupling assemblies are connected. Latch fingers attached to the slide cooperate with the stem coupling assembly for pulling the slide toward its closed position when the two coupling assemblies are disconnected. The body valve cooperable with the slide is mounted on one end portion of an elongated member having its opposite end portion threaded into a finned support member retained within the body between a shoulder and a snap ring. A poppet valve in the stem assembly has a hollow metal stamping forming a guide shaft received in a guide hole in an axially elongated guide sleeve on a finned guide member.

Abstract: A connector useful in releasably connecting well servicing equipment to wellheads. A male connector member houses resilient seals sealingly engageable in the female member on connection. The female connector member houses radially moveable dogs which may be locked in connecting engagement in a groove on the male connector by a lock sleeve longitudinally moveable over the dogs. The sleeve is longitudinally moveable in response to pressure and is biased toward dogs locked position and may be retained there by application of pressure through a first inlet in the sleeve. The female connector houses a pressure lock which prevents movement of the lock sleeve on application of pressure to a second lock sleeve inlet, if there is pressure in the connector bore.

Abstract: The present invention provides an improved, self sealing, female pneumatic coupling of the type that releasably engages a grooved nipple attached to a pneumatic tool or fixture. The conventional elements of the female coupling include a ball bearing latch that prevents removal of the grooved nipple when activated and a locking sleeve to activate the ball bearing latch. The improvement of the present invention, in a preferred embodiment, includes locking sleeve having separable segments to form a set of first, second and third combination locking tumblers each of annular configuration. A set of numbers is provided on the outer periphery of each of the tumblers. Each of the tumblers must be rotated so that a selected number thereof is opposite to an index before the locking sleeve can be moved to deactivate the ball bearing latch.

Abstract: The union is made up of two parts normally locked together by at least one radial screw with sized cross section. Under severe pulling stress applied to the union from the outside the locking screw breaks and frees the two parts of the union, which separate together with the pipes to which they are attached. Under normal working conditions elastically stressed sealing devices ensure maintenance of watertightness between the union parts.

Abstract: A quick connect/disconnect coupling for carrying fluid under pressure includes a latch mechanism requiring two independent movements in two different directions for releasing same. The coupling includes improved seals at various locations along with a slide bearing, and improved support fins for internal valves. The coupling is keyed in a plurality of different mating pairs of body and stem assemblies so that the stem assemblies having different keys cannot be mated together.

Abstract: A multiple connector fluid coupling includes a plurality of quick-connect fluid couplings and comprises a first plate adapted to support a plurality of male connector parts, a second plate adapted to support a plurality of female connector parts in alignment for registration with the male parts in the first plate, and a third plate adapted to engage displaceable sleeves on the female connector parts to simultaneously activate the sleeves. In one form of the invention, the second and third plates have elongated end portions so that the plates can be manually grasped and manipulated for positioning with respect to the first plate. In another form of the present invention, a manual lever-operated cam displaces the third plate with respect to the second plate so that a mechanical advantage can be provided for operating a plurality of large fluid connectors at one time.

Abstract: The device for guiding and locking the coupling of the connector includes a guidance column 3 having a locking notch 5 cooperating with a cylindrical roller 6 urged by a leaf spring 7 borne by a sliding member 8.

Abstract: A rigid mount, breakaway, quick coupler for fluid interconnection includes a spring-activated mechanical stop therein to prevent flow-checking. The flow check stop is supported in a cross bore in a movable inner body member of the coupler and cooperates with a ramp surface for positioning thereof in aligned or laterally displaced positions from the axially movable, flow-checking valve pin, thereby respectively to prevent or allow valve pin movement.

Abstract: A quick disconnect coupling wherein the male coupler part has both threads and a groove so that it can be universally secured to a female coupler part regardless of whether the female coupler part carries a threaded nut or detent type securing or connecting means.

Abstract: A multiple coupling with plate-shaped coupling halves in which the fluid-conducting spigot and hub parts of the individual couplings are fastened. The coupling halves are held pin-centered with respect to each other and detachably to each other in coupling position by a locking-ball interlock such that a plug projection of one coupling half enters into a socket opening of the other coupling half. The plug projection is held in the socket opening by locking balls which can be released by displacement of an interlock sleeve into the open position. The plug projection which is arranged approximately concentrically to the one coupling half is provided at its end with a grip of smaller cross section for a pull member developed preferably in the form of a rope, which passes through the socket opening.

Abstract: The invention pertains to a breakaway coupling for use with fluid systems wherein self-sealing coupling parts are interconnected by locking structure including a tubular displaceable operating member sealingly associated with a flexible conduit comprising a portion of the fluid system. Predetermined tension within the flexible conduit displaces the operating member to a coupling release position permitting the coupling parts to disengage and seal with minimum fluid loss.

Abstract: A compressed air coupling with a coupling socket and a valve sleeve displaceable therein and lockable by a catch in the socket, and a nipple insertable into the valve sleeve and lockable by a ball catch in the valve sleeve. The valve sleeve (40) together with the nipple (16) is displaceable from its inner end position, while closing the connecting passage (58,64) to a predetermined intermediate position in which a passage (62,64,54,56) is opened between the nipple locked in the valve sleeve and the free atmosphere to release residual compressed air in the nipple.

Abstract: A connector for connecting together two ends of a fluid-carrying line comprises two coupling halves. The female half includes a cylindrical female housing. A support sleeve is concentric with and mounted around part of the female housing, and the forward end is threaded to receive the male half. An actuator sleeve is around the support sleeve. A movable locking member in the form of balls are seated in opening through the support sleeve against the actuator sleeve. A trigger ring inside the support sleeve slides between a blocking position under the balls and an unblocking position releasing the balls. One surface of the actuator sleeve urges the balls against the trigger ring. The threaded forward end of the male half engages the threads of the female half. A nose section on the male half, which extends forward of the threads, engages a trigger actuator ring in the female half.

Abstract: An automatic hydraulic connector for connecting an hydraulic pipe to apparatus comprises a female cylindrical receptacle for connection to the apparatus and a retractable hollow male cylindrical body releasably lockable by locking means to the receptacle, under the control of a cylindrical slide member biased by a spring to its locking position and driven into its unlocking position by the action of an operating fluid which acts on a movable cylindrical core which is connectable to the slide member and also in part defines the hydraulic passage extending from an inlet in the male body to an outlet in the female receptacle.

Abstract: A pipe coupler including a socket having a valve member provided with a fluid passage and a plug designed to engage and open the valve member. A locking ball is provided to retain the plug relative to the socket after insertion therein. The valve member includes a blank flange normally engaged against an annular seal to close the fluid passage. A locking ball-bearing annulus is slidably mounted within the socket to normally hold the locking ball in a disengaged position. A single O-ring is positioned between the valve member and the bearing annulus in such a manner that the single O-ring is not subjected to any axially excessive force when the blank flange engages the annular seal. The single O-ring includes an outer surface and an inner surface which seal against the inner surface of the socket and the outer surface of the plug, respectively.

Abstract: A female quick disconnect coupling includes a locking mechanism which requires different forces to connect and disconnect a male coupling. A tubular housing is slidably mounted within a sleeve, and a pair of coil springs are mounted between the housing and the sleeve. Only one of the springs is compressed as the housing moves in one direction within the sleeve to permit a male coupling to be connected to the female coupling. Both springs are compressed as the housing moves in the other direction to permit the male coupling to be disconnected, thereby requiring a relatively high force to disconnect the couplings.

Abstract: A breakaway fluid valve coupling including a pair of identical coupling members each of which is connected to an end of a fluid conveying pipe. The coupling members are joined together to allow fluid to pass through the pipe and fluid valve coupling. The coupling members are pulled apart by exertion of axial stress on the members, the coupling members automatically sealing the ends to prevent leakage of the fluid.

Abstract: A first quick-coupling member (1) is adapted for introduction into and removal from a recess (2a) situated in a unit which can cooperate with the first coupling member, for example a second coupling member (2). A protective sleeve (4) is disposed on a body surface (1d, 1e) present at the front portions of the first coupling member. The protective sleeve is longitudinally displaceable in the longitudinal direction of the first coupling member, besides which the external diameter (d3) of the protective sleeve exceeds the internal diameter (D3) of the recess. In an initial position, the protective sleeve is conveyed forwards towards the front end (1c) of the first coupling member where it prevents the access of impurities to the front portions (1d) of the body surface. When the first coupling member is introduced into the recess, the protective sleeve is displaced longitudinally backwards on the first coupling member to expose its parts (1b) which is introduced into the recess.

Abstract: A holddown apparatus having a sleeve with a plurality of fingers, the reactive length of which is varied in order to provide any predetermined engaging and release force to detents which engage a groove in a shaft that is attached to a missile to form a passive holddown apparatus which is reusable.

Abstract: A hydraulic quick disconnect coupling wherein the female half is free of external moving parts and a spring loaded internal fitting is employed to maintain the halves in either coupled or uncoupled condition.

Abstract: A riser connector for connecting two riser members. The first riser member has a profile shoulder and the second riser member has an expandable ring for engaging the shoulder of the first riser member thereby making a connection. The second riser member has a locking sleeve movable to a position wherein the locking sleeve holds the expandable ring in engagement. The locking sleeve is automatically activated by the relative movement of the riser members. When the locking sleeve is in its second position, an actuator sleeve in the bore of the locking sleeve automatically moves to a position wherein the locking sleeve is locked in its second position.The riser connector is disconnected by a tool attached to the end of a pipe string which is inserted in the bore of the riser members. The tool engages the actuator sleeve and shifts it to a position wherein the locking sleeve is unlocked.

Abstract: In dental instruments such as a dental handpiece and a syringe, a coupling device for detachably connecting a hose portion, which supplies air or liquid to these instruments, to an instrument body. The coupling device comprises a sleeve fitted over the hose portion with a clearance formed therebetween, a ball-like stop member inserted into at least one opening formed in a peripheral surface at the front end of the sleeve and movable in a diametral direction of the sleeve, a connection cylinder having one end coaxially mounted on the rear end of the instrument body and inserted into the sleeve, and an operating ring fitted over the sleeve and movable in an axial direction of the sleeve.

Abstract: A quick-change holder for a machine tool wherein a nut holding a tool can be attached and detached by a single action. In the quick-change holder of the type, in which the nut charged with the tool can be attached to and detached from a holder body by the radial movements of a plurality of balls which are so loosely fitted in a plurality of radial through-holes formed in the holder body as to be made movable in the radial direction, according to the present invention, the aforementioned holder body is formed with an outwardly diverging conical inner circumference in which a spring having free wire ends with a gap therebetween so as to be compressible radially inwardly is fitted under radially inward compression in an inscribed relationship therewith, and the aforementioned spring is brought into abutment engagement with the balls, when the nut is not inserted, thereby to push the balls outwardly in the radial direction.

Abstract: A coupling for flexible conduits in which the female element is constituted by a body 1 provided with an axial bore comprising internally a locking recess 2 and the male element is constituted by a tip on which is mounted a locking device constituted by an engagement element radially displaceable to engage in the locking recess of the female element under the action of a locking control device 13 constituted by a sleeve mounted longitudinally movably on the cylindrical central body of the male element, the end of said sleeve directed toward the engagement end of the male element forming a cam surface 14 coacting with the engagement element so as to displace it radially outwardly and this sleeve being resiliently urged by a spring 17 toward the locking position.