Abstract: The cuff (25) for connecting a tube (26) to two pipes (2) or two equipments together includes, at each end, a knuckle joint mechanism (31) bearing on a clamp (3) integral with the pipe (2) and which forces the end of the tube (26) against the mouth (4). The knuckle joint (31) is two pairs of rods (32, 35), whose interference produces a compressive stress on spring washers (37). The fixing force is consequently applied in simple and reliable manner and can be interrupted just as easily. The bearing surfaces of the connecting parts and the tube (26, 30, 43) with respect to one another, on the clamp (3) and the mouth (4) must be spherical and concentric in order to enable the pipes (2) to be angularly displaced by a few degrees relative to the tube (26).

Abstract: A fluid coupling includes a first member for supplying fluid, a second member for receiving the fluid supplied by said first member, and a securing device for securing the first member in fluid communication with the second member. The securing device includes a locking element movable between a first position at which the first and second members can be separated and a second position at which the first member is secured to the second member. An actuator is provided for moving the locking element between the first and second positions. The actuator includes a main body secured to the first member and an actuator arm movably connected to the main body for manipulating the locking element. A guiding surface is provided on the actuator body for guiding the locking element between the first and second positions.

Abstract: A device for coupling together pipes, which at their end have an outwardly directed bead, comprises an annular clamping strap (1) and a clamping mechanism (4-6) arranged at the ends (2a, 2b) of the clamping strap. Between the ends (2a, 2b) of the clamping strap (1), a sealing element (7) is arranged for sealing the joint between the ends (2a, 2b).

Abstract: A fitting is provided for joining to a smooth exterior periphery of a tubular conduit with a seal member sealing therebetween. The fitting has a tubular body with a central passage for receiving the tubular conduit. The central passage defines a central axis for the fitting and has a tapered opening, a threaded section, a seal section and a stop which circumferentially extend coaxially about the central axis. An annular shaped seal member extends from the seal section for sealingly engaging the exterior periphery of the tubular conduit. The tapered opening of the fitting provides an entrance to the central passage which is sized for receiving and end of the tubular conduit having an oval shaped periphery, and then rounding the exterior periphery such that annular shaped seal member will sealingly engage the exterior of the tubular conduit. The seal section is disposed between the tapered opening and the threaded section of the central passage.

Abstract: A passage communication member is fitted in a first passage in a structural member, and has a head which is mounted in a slot in another structural member. The first passage in the structural member and a passage in the other structural member are held in communication with each other through a through hole that is defined in the passage communication member. Alternatively, a first engaging member is inserted in a recess defined in a structural member, and a second engaging member is retained in a slot in another structural member. When the first and second engaging members are coupled to each other by a fastening member, the structural members are firmly joined and fixed to each other.

Abstract: A pipe connection includes a pipe having a smooth-ended end portion pushed onto a sleeve-like region of a fitting. The fitting includes a stop at one end of the sleeve-like region. A seal is arranged between the sleeve-like region of the fitting and the pipe. The pipe and the fitting are formed from a plastically deformable metal. A bead like deformation formed using an externally applied pressing tool axially secured the pipe and the fitting to one another. The deformation encompasses the pipe and the fitting and is located at a small enough distance from a free end of the sleeve-like region of the fitting so that the seal in this location is included in the deformation.

Abstract: A coupling element connects a connection piece with an insertable end of a connection tube having a toroidal flange for contacting the connection piece in the tube inserting direction. A plug-in fork can be inserted into the coupling element to releasably secure the inserted tube end area against the tube inserting direction, with the tube torus held in place by the plug-in fork. For this purpose, pairs of plug-through openings are provided on side walls of the connection piece opposite one another, so that one prong of the plug-in fork can be inserted into each opening. Inserting bevels are assigned to at least a portion of the plug-through openings, which inserting bevels are shaped such that they cause a forced movement of the plug in fork in the tube inserting direction during its insertion in the plug-in fork inserting direction.

Abstract: A method and apparatus for connecting a tube to a surface that creates a dead volume seal. The apparatus is composed of three components, a body, a ferrule, and a threaded fitting. The ferrule is compressed onto a tube and a seal is formed between the tube and a device retained in the body by threading the fitting into the body which provides pressure that seals the face of the ferrule to a mating surface on the device. This seal can be used at elevated temperatures depending on the materials used. While the invention has been developed for use with micro-machined silicon wafers used in Capillary Gas Chromatograph (GC), it can be utilized anywhere for making a gas or fluid face seal to the surface of a device that has near zero dead volume.

Abstract: A telescopic pivotal pipe joint for use in a fluid transporting pipe system such as water transporting pipe system installed under the ground is disclosed. The joint has a first pipe member including a semi-spherical inner peripheral face, a second pipe member including a semi-spherical pipe portion projecting radially outward and sidable along the semi-spherical inner peripheral face of the first pipe member, the second pipe member being slidably engaged within the first pipe member, and a third pipe member telescopically sidable in an axial direction and engaged on a straight pipe portion co-extensive with the semi-spherical pipe portion of the second pipe member. The semi-spherical pipe portion of the second pipe member defines an annular groove, into which one end of the third pipe member comes into engagement along the axial direction when the second pipe member and the third pipe member are contracted maximally relative to each other.

Abstract: A coupler connects a gas leakage testing system to a pipe forming a part of a high pressure fluid conduit system, and a stationary case connected to the gas leakage testing system, a movable member movable in the inner space of the stationary case in an axial direction thereof, a coil spring urging the movable member in the axial direction, a split clamper arranged around the outer surface of the pipe and an axial force-to-radial force converter provided between the movable member and the split clamper form in combination the coupler; when the coupler is attached to the pipe, the coil spring urges the movable member in the axial direction, and the axial force-to-radial force converter inwardly exerts a radial force on the split clamper so as to grasp the pipe; since the split clamper is held in surface contact with the pipe, the pipe is never deformed due to concentration of a stress.

Abstract: An improved ratcheting tool swivel body assembly which would include a swivel body having a principal body portion, and a threaded port extending outward from the wall of the stem body, the stem body would further include a continuous opening therethrough, for receiving an elongated stem member, the stem member including a port through the stem member, for allowing fluid to flow between the port and the stem member and the threaded port of the swivel body. The stem member would include a first end having a threaded male end for threadably engaging to the hydraulic fluid source of the torque wrench, and a second end terminating in a hex head portion which is engaged against the upper end of the swivel body.

Abstract: A clamping apparatus for engaging a pair of abutting flanges from a pair of pipes has a pivot end of a first clamp portion pivotally joined to a pivot end of a second clamp portion by a pivot pin, such that the first and second clamp portions may be mutually rotated into an open attitude for enabling one of the first and second clamp portions to be placed in contact with the abutting flanges. The pivot pin then enables the first and second clamp portions to be alternately mutually rotated into a closed attitude for enabling the other of the first and second clamp portions to be placed in contact with the abutting flanges, the clamping portions thereby being drawn into mutually opposing positions so as to place a clamp end of each of the clamp portions in mutual proximity. The clamping apparatus further includes a rocking bolt and rocking nut hingbly attached to one clamp end to removably engage a rocking slot in an opposite clamp end so as to secure the clamp portions in the closed attitude.

Abstract: Method and apparatus are disclosed to complete a threaded connection between two connector members by relative rotation between the connectors, utilizing fluid pressure between them to overcome radial load resistance during make up by rotation, and thereafter to produce axial and radial loading in the completed connection, but without otherwise applying longitudinal forces to drive the two connectors together to make up the threaded connection. In a disclosed embodiment, a pin connector has a tapered neck with external threads, and a box connector has a collar with a tapered interior, featuring tapered threads. The pin neck is received within the box collar, and the two sets of threads are made up by relative rotation between the pin and box. When a stall position is reached due to radial resistance forces, two combinations of bump and ramp seals provide a sealed zone between the sets of threads.

Abstract: A swivel fitting is provided for use on the riser line associated with the underground storage tank of gasoline service stations. The swivel fitting includes an adapter sleeve that attaches to the riser line by a standard threaded connection. A swivel sleeve includes a fill adapter fitting for use in removably attaching a product transfer hose as is typically used to transfer product to the underground storage tank from a tanker truck. The swivel sleeve is sleeved to the adapter sleeve to permit rotation of the fill adapter fitting with respect to the riser line. A pair of bearing surfaces and a bearing between the swivel sleeve and the adapter sleeve allow smooth rotation of the swivel sleeve with respect to the adapter sleeve.

Abstract: A ball-and-socket joint of the type where the male end (1) of a first pipe element (2) has a spherical saddle (5) designed to be inserted and pivot in a specially designed housing with a spherical profile (11) which is set on the Y--Y axis socket of a second pipe element (4). A waterproof elastomer ring gasket (16) is set in a ring groove (15) in the socket's (3) internal surface. The groove is designed and located in such a way that it forms an expansion chamber for the elastomer of the gasket during the insertion of the spherical saddle into the socket and insures, in a locked position, the pressing of the gasket on the outside surface of the saddle located beyond the maximum diameter of said saddle measured in a direction perpendicular to the axis Y--Y of the socket. The gasket is thus subjected to a residual radial compression that guarantees the waterproofness of the assembly and simultaneously prohibits the dislocation of the pipe elements.

Abstract: There is provided a common rail which can reduce a maximum stress value generated in an inner peripheral edge portion of a lower end of a branch hole and can further improve an internal pressure fatigue strength.

Abstract: The fitting for the present invention comprises a fitting main body and a retaining ring, in which the fitting main body comprises an inner core having a plurality of large diameter portions form on the outer circumferetial surface and a flange and having a hole disposed to the circumferential surface of the retaining ring for attracting the retaining ring put over the top end of the plastic pipe to the flange; and the retaining ring, upon attracting operation applied thereto, moves the plastic pipe to the flange accompanying the retaining ring to insert the inner core relatively to the top end of the plastic pipe. The inner core diametrically enlarges the top end portion of the plastic pipe and compresses the top end portion in cooperation with the retaining ring. Therefore, the said fitting can simply and reliably connect the plastic pipe.

Abstract: A stress reduction groove for tubular connections which relates to a threaded pipe connection, and includes a box member, a pin member, and a continuous groove formed in the thread of one of the members. The box member has a tapered, internal, generally dovetail-shaped thread with stab flanks, load flanks, roots, and crests. The internal thread has a beginning and an end and increases in width in one direction. The pin member also has a tapered, external, generally dovetail-shaped thread with stab flanks load flanks, roots, and crests. The external thread increases in width in the other direction so that the complementary flanks of the respective threads move into engagement during rotational make-up of the connection and form sealing surfaces that resist the flow of fluids between the threads upon rotational make-up of the connection. A section of one of the internal and external threads has the continuous groove formed in the roots thereof.

Abstract: A blocking arrangement serves for securing prevention of a spear (1) being unscrewed from a corresponding neck ring (3) in a container for a liquid, for example, beer, being under pressure by a drive gas in the container. The blocking arrangement consists of a split spring ring (8) which is placed in a groove (5) constructed in the corresponding neck ring (3). This groove is so deep that the spring ring is allowed to be squeezed radially into the groove. The expansion for the spring ring radially outwardly is limited, however, by in inwardly turning cylinder face (22) on the spear (1). Furthermore, the spear has an upwardly turning blocking face (12) which adjoins the cylinder face (22). When dismounting of the spear is attempted, its blocking face (12) adjoins the spring ring (8) which is retained axially by the downwardly turning upper side (16) of the groove.

Abstract: A pipe connector comprises a plug having a groove on the outer periphery of the distal end portion thereof, a socket having an axial hole to receive the distal end portion of the plug and a radial hole, a sealing member attached to the socket and sealing the plug and the socket, a lever pivotally mounted on the socket adjacent the radial hole and having a cam engagable with the groove through the radial hole, the lever being movable to a connected position, a half-connected position and a separated position. The cam is engaged with the groove and the sealing member is pressed, while the lever remains in the connected position, the cam is partly engaged with the groove and the sealing member is free from pressure, while the lever remains in the half-connected position, and the cam is disengaged from the groove, allowing the plug and the socket to move relative to each other, while the lever remains in the separated position.