Abstract: A service tube assembly comprises a service tube having a threaded end portion and a ratchet hub spaced from the threaded end portion. The threaded end portion of the service tube is threadably engaged with a mating part. The assembly further comprises a locking member having a cantilever extending from a fixed end held relative to the mating part to a free end. A ratchet pawl is provided at the free end for engagement with the ratchet hub on the service tube.

Abstract: A hose connector assembly for connecting a hose to a port of a pressurized fluid system, the system including a socket and an adapter tube in fluid communication, with an end portion of the socket adapted to be connected to a port and having a receiving opening. The adapter tube has a plug-in end portion to be pushed into the receiving opening which is adapted to cooperate with the plug-in end portion to form a plug-in connection mechanism. The adapter tube has a hose connector end fitting adapted to be received in, hold and retain a hose end portion. Complementary locking surfaces of the receiving opening and plug-in end portion are engaged when the plug-in end portion is connected by the plug-in connection mechanism to the socket to lock the adapter tube with respect to the socket against rotation about the longitudinal axis of the adapter tube within the socket.

Abstract: A system includes a spray-component adapter. The spray-component adapter includes a first connector configured to couple the spray-component adapter to a first fluid port of a first spray component. The spray-component adapter includes a second connector configured to couple the spray-component adapter to a second fluid port of a second spray component. At least one of the first or second connectors comprises a self-tapping portion.

Abstract: Cooling apparatuses and coolant-cooled electronic assemblies are provided which include a thermal transfer structure configured to couple to one or more sides of an electronics card having one or more electronic components to be cooled. The thermal transfer structure includes a thermal spreader and at least one coolant-carrying channel associated with the thermal spreader to facilitate removal of heat from the thermal spreader to coolant flowing through the coolant-carrying channel(s). The cooling apparatus further includes a coolant manifold structure disposed adjacent to a socket of the electronic system within which the electronics card operatively docks, and a fluidic and mechanical attachment mechanism which facilitates selective, fluidic and mechanical coupling or decoupling the thermal transfer structure and coolant manifold structure, the attachment mechanism facilitating the flow of coolant between the coolant manifold structure and the coolant-carrying channel(s) of the thermal transfer structure.

Abstract: A fluid transfer tube comprises a base, a plurality of external threads, and an annular shoulder. The base is disposed at a first axial end of the tube. The plurality of external threads are integrally formed into at least a portion of the base for securing the base into a boss. The annular shoulder is fixed to an outer diameter of the tube at a first distance from the first axial end, causing the shoulder to contact an outer surface of the boss with the base of the tube at a maximum depth in the receiving portion of the boss to prevent further downward travel of the base.

Abstract: A conduit hub includes a conduit hub body having a cylindrical inner surface configured to receive an end of a cylindrical conduit having a male thread, wherein the conduit hub body includes a female thread and a counterbore formed in an outer rim of the cylindrical inner surface. The conduit hub further includes a wiper seal configured to fit into the counterbore such that a lip of the wiper seal extends beyond the outer rim of conduit hub body and a surface of the wiper seal engages with an outer surface of the cylindrical conduit, when the male thread of the cylindrical conduit is threaded to engage with the female thread of the conduit hub body, to resist the ingress of moisture, dirt or contaminants into the conduit hub or the conduit.

Abstract: A pool and spa plumbing adapter to relocate existing directional water flow plumbing fittings to new positions to accommodate new surfacing overlaid on the existing pool or spa surface. The adapter provides for a threaded engagement with existing plumbing and has a shoulder portion providing a visual cue for proper rotational translation of the adapter into the existing plumbing fitting to accommodate the new surface layer. A sealing ring can be provided extending above the shoulder portion to prevent fluid passage between the new surface and the adapter and to prevent rotation of the adapter.

Abstract: The subject of the present invention is a ring seal preventing the seal from sliding and/or tilting when tightened. For this purpose, the invention proposes a seal (10) having an axis of revolution (R) and a median transverse axis (T), and comprising, in cross section, a general D shape defined by a wall (11) forming the back of the D, a wall (12) forming the belly of the D, and two side walls (13). The seal has a height (H) and a thickness (E), the ratio (E/H) of the thickness (E) over the height (H) being between 0.7 and 0.85, preferably 0.8. The back wall (11) comprises, in the uncompressed state, a concave face defining a hollow (11a) between two crowns (14), the hollow having a height (h) of between 50% and 60% of the height (H) of the seal, and a depth (p) of between 4% and 8% of the thickness (E) of the seal.

Abstract: A pipe connector for providing a fluid connection between two pipe sections. The connector includes a connector housing, the housing including a first fluid flow port, a second fluid flow port and a fluid flow chamber extending between the first and second fluid flow ports. The connector includes a first attachment assembly for attaching the connector to the first pipe section, such that, in use, the first fluid flow port is fluidly connected to an aperture provided in a sidewall of the first pipe section. The connector further includes a second attachment assembly for attaching the connector to the second pipe section, such that, in use, the second fluid flow port is fluidly connected to an open end of the second pipe section. The connector still further includes a seal for, in use, providing a fluid seal between the housing and the first pipe section about the fluid connection between the first fluid flow port and the aperture provided in the sidewall of the first pipe section.

Abstract: Damping conduit assembly (4) for a hydraulic system comprising a user (3) and a pipe (2) connected to the user (3) by means of a first connecting element (6) and presenting an end portion (20) having a first axis (B) and a bush (15) carried by the end portion (20) and having a second axis (A) transverse to the first axis (B), the bush (15) also housing the first connecting element (6) for fluidly connecting the user (3) to the pipe (2), the conduit assembly (4) being suited to be fluidly connected to the pipe (2) and comprising a flexible cylindrical wall (27), a closing element (29) axially delimiting an internal volume (30) of the cylindrical wall (27) filled with fluid. The conduit assembly (4) also comprises a connecting unit (5) comprising the first connecting element (6) and a second connecting element (22) carried by the cylindrical wall (27) and coupled to the first connecting element (6).

Abstract: A seal assembly for effecting a fluid tight seal between a pipe and an opening in the wall of a structure, particularly a relatively thin-walled structure made of a rigid plastic, fiberglass, or of metal, for example. The seal assembly generally includes a seal ring and an annular nut. The seal ring includes a relatively rigid fastener component having external threads, and a relatively resilient sealing component joined to the fastener component and including a first sealing projection for providing a compressive seal between the seal ring and one side of the structure wall, and a second annular sealing projection for providing a compressive seal between the seal ring and the outer surface of a pipe inserted through the seal ring.

Abstract: A sealing system with sealing ring for coupling members for connecting pipes to user devices such as pumps, compressors, tanks and the like, by means of a shank that screws into a seat provided on the said user devices, comprises a groove and an annular seal. The groove, which is shaped according to the teaching of international standard ISO UNI 5711-65, is situated in a position adjacent to the shank of the coupling member, at the opposite end from the end of the shank. The groove is able to receive the annular seal designed to be pressed against an abutting wall or a flared portion of the seat of the user device in order to establish the seal. In the original configuration prior to assembly, the sealing ring is of an essentially cylindrical shape, whereas, in the configuration of compression on the groove, it assumes a shape adapted to the profile of the groove, which is generally frustoconical.

Abstract: A fluid fitting assembly (100), suitable for use in extreme working temperature conditions, can comprise a receiving member (110) with an inexpensive port design (e.g., SAE J1926 and/or ISO 6149), a standard fitting member (112), and a metal seal member (200). The seal member (200) comprises a ring portion (212) and a shoulder portion (218/220) extending radially from a head-adjacent region of the ring portion (212). The outer radial surface of the ring portion (212) seats against the chamfer section (126) of the receiving member (110) and the head-adjacent axial surface of the shoulder portion (218/220) seats against the undercut section (136) of the fitting member (112).

Abstract: A threaded joint for pipes comprising at least one seal of the metal-metal interference type arranged externally to the female thread. The joint has an extension of the box beyond the seal which produces an elastic tightening band effect on the seal so that excessive interference on the seal is not necessary, thus favouring correct making up.

Abstract: A direct port connection for connecting a tube to a port without the use of an adapter fitting. A modified port design permits the use of prior art adapter fittings as well as the direct port connection of the present invention. Consequently, the invention permits the most efficient tube-to-port connection to be determined on an application-by-application basis at the time of making the connection.

Abstract: An externally threaded male hydraulic coupling member adapted for threaded and sealed attachment to a port body with a female port. The male coupling member having a tubular member with a threaded end, a bore extending through the member, a first cylindrical peripheral undercut portion longitudinally adjacent the threaded end, a series of intermediate external threads, and a second cylindrical undercut portion. The coupling member having a seal member and an annular ring member located in peripheral sealing contact with the first undercut portion. Wherein upon attachment, the seal member is encapsulated by the annular ring, the female port and the first undercut portion forming an annular chamber having a longitudinal extent greater than the seal member thickness. The coupling member also having a lock nut threadedly attached to the intermediate threads with a longitudinal end located between the annular ring and the intermediate threads.

Abstract: The fitting has a high-pressure fuel supply conduit, and the injector has a hollow body having a threaded seat engaged by a threaded portion of the fitting. The fitting has a shoulder located between the threaded portion and another portion of the fitting, and the hollow body has a shoulder on a non-recessed outer surface of the hollow body. The two shoulders are precision machined so they are parallel in use; and the usual high-pressure fuel sealing washer is inserted between the two shoulders so machined. More specifically, the shoulder of the fitting has a groove housing the washer, and the shoulder of the hollow body undergoes circular spot facing to form a series of circular cavities concentric with the axis of the threaded seat and characteristic of Ra=1.6 surface roughness.

Abstract: A system and method for installing plumbing spouts, such as shower heads and tub spouts, includes providing a stub out which protrudes out of a wall at shower height. A specialized adapter is then slid onto the protruding stub out until the adapter abuts the wall. The adapter is internally threaded with an integral ferrule, and may also be equipped with a one-way gripper ring and an O-ring to sealingly secure the spout to the stub out. The stub out, if closed, is then cut off outside the adapter and a standard shower arm or nipple for a tub spout is threaded into the adapter. A threaded end of the shower arm or nipple engages the ferrule and compresses it against the stub out creating a seal therebetween. When installing a shower head, an escutcheon plate is adapted to be slid over the shower arm to engage peripheral fingers of the adapter to secure the escutcheon in place. A shower head is then threaded onto the shower arm to complete the installation.

Abstract: A lip seal union fitting attaches to a female boss associated with a hydraulic component. The female boss includes a bore, a first threaded portion located on an inner surface of the bore and a seat. A body of the lip seal union fitting is constructed of a first material and includes a tube-side end, a boss-side end, and a central portion. A second threaded portion is located on an outer surface of the boss-side end. A lip seal is constructed of a second material. The lip seal extends from the central portion of the body towards the boss-side end. The lip seal includes an outer surface that engages the seat of the boss to create a fluid seal as the first and second threaded portions are rotatably engaged. The first material has a greater material hardness than the second material. The first material includes at least one of steel, stainless steel, an titanium alloy and the second material includes at least one of aluminum and aluminum alloy. The lip seal is attached to the body using inertia welding.

Abstract: The connecting element (1) is equipped in the region of a connecting portion (5) with a seal (7) which is fixedly connected with the housing (3) of the connecting element (1). Staying elements (9) protect the seal (7) against undue pressing forces. Between the housing (3) and one end of a corrugated pipe (2) a seal (12) is also disposed, which is nondetachably connected with the inner shell (14) of the housing (3) of the connecting element (1).

Abstract: A new Bifurcated Fill Valve Assembly for permitting removal of a fill valve from a toilet tank without disturbing the seal at the toilet tank and without disconnecting the water supply line. The inventive device includes a tank fitting extended through and mounted within an opening in a wall of a toilet tank and a fill valve including a valve body having an inlet portion wherein the inlet portion of the fill valve is releasably coupled to the tank fitting within the toilet tank. As such, the fill valve can be uncoupled from the tank fitting and removed from the toilet tank while the tank fitting remains mounted within the toilet tank and coupled to a water supply conduit that supplies water to the fill valve when in use.

Abstract: A high pressure plug/port assembly includes a plug having a head portion at one end, a guide portion at the other end and an O-ring portion therebetween. An annular plug seat surface extends radially inward from the head portion to the O-ring portion at the intersection thereof and a chamfered surface extends radially outward from the O-ring portion to the guide portion at the intersection thereof. The port includes a threaded counterbore in threaded engagement with the plug head portion, a smaller bore receiving the plug's guide portion and a frusto conical bore extending from the smaller bore to the counterbore and defining an annular port seat surface extending radially outward from the frusto conical bore to the counterbore.

Abstract: For nozzle replacement, repair and initial installation in ASME pressure vessels, disclosed are nozzles, nozzle assemblies and nozzle repair assemblies, all of which are mechanically attached and mechanically sealed to the vessel, i.e., without any welding to the vessel, and in most embodiments without any welding at all. For nozzle replacement, a part or the entire existing nozzle is removed and a partial or full replacement nozzle or nozzle assembly is mechanically attached and mechanically sealed to the vessel. For nozzle repair, the existing nozzle within the bore is not removed, and a mechanical seal is provided for the existing nozzle which may also be welded or mechanically attached to the repair assembly.

Abstract: A coupling, which has a longitudinal bore for fluids to pass through, for connecting a tube to a pair of fittings that can be tightened and loosened with a wrenching tool, including a nipple positioned at one end of the coupling; a first threaded mating portion positioned at an opposite end of the coupling; a second threaded mating portion positioned adjacent the nipple; a wrenching portion disposed on the coupling having a front end and a rear end and extending above the first threaded mating portion with the wrenching portion rear end including a shoulder extending below the wrenching portion front end; and, whereby the first threaded mating portion engages one of a pair of fittings and the second mating portion engages the other of a pair of fittings.

Abstract: In one embodiment of the invention, there is provided a tubular assembly having a lateral connection. The assembly comprises a spool body, a carrier ring, penetrators, and an urging means.The carrier ring is built to carry the radial penetrator(s) for the carrier body. The carrier ring is mounted in sliding relationship, concentric with the carrier body. The ring is spring loaded down relative to the carrier body, against a stop shoulder (device) there. This fixes or at least stabilizes the ring on the body during running into the spool body or retrieving from the spool body.The carrier ring fits into the spool body and seats on a stop in the spool body. The carrier body also seats in the spool body, but on a different stop.Radially extending penetrators are mounted in radial ports or passages in the carrier ring, and are fixed to control fluid lines which conduct the fluid down into the well. The penetrators can move radially relative to the ring, but not axially.

Abstract: A vacuum system (20) includes an enclosure (22) having a vacuum-tight wall (26) and an internally threaded aperture (66) through the wall (26). A tip-off fitting (24) has a base (50) with a bore (52) therethrough, a hollow tube (62) fixed to the base (50) with a vacuum-tight seal, such that an interior (64) of the tube (62) is in communication with the bore (52) in the base (50), and an external thread (58) on the exterior of the base (50). The external thread (58) on the exterior of the base (50) is dimensioned to threadably engage the internal thread (68) on the aperture (66). There is a disengageable vacuum sealant (70) such as a layer of indium metal between the external thread (58) of the base (50) and the internal thread (68) of the aperture (66). The vacuum system (20) is evacuated through the tip-off fitting (24) and sealed by closing off the hollow tube (62).

Abstract: The invention disclosed herein provides nozzles for vessels such as a pressurizer vessel, reactor vessel or piping in a nuclear power facility, and methods for attaching and sealing the nozzles to the vessels without any welding at all, i.e., without using a structural or seal weld. The nozzles are clamped or bolted to the vessel or attached by an interference fit, and a mechanical seal is obtained using gasket material and/or contacting, preferably polished, metal surfaces. Some embodiments of clamping the nozzle to the vessel comprise tightening a nut on the threaded end of the nozzle projecting from the bore in the vessel against the vessel, and structure which prevents the nozzle from being withdrawn through the bore, thereby clamping the nozzle against the vessel. Another embodiment of clamping a nozzle to the vessel comprises a sleeve threaded in the bore and forcing an interfering portion of the nozzle body into engagement with the bore.

Abstract: A hydraulic mechanism for driving a vehicle, and having right and left laterally spaced hydraulic motors which drive respective ground engaging wheels, an axle structure extending laterally between the right and left hydraulic motors for receiving operating loads from the ground engaging wheels, the right and left hydraulic motors being coupled with the axle structure for generally enclosing and sealing the axle structure, said generally sealed axle structure being adapted for containing hydraulic fluid and serving as a fluid reservoir, a hydraulic pump which drives the hydraulic motors, said pump being in operative fluid communication with the interior of the axle structure for drawing fluid therefrom, the pump being positioned outside the axle structure. The motors include input and output ports which are positioned within the axle structure, and hydraulic lines extend between the pump and the input and output ports.

Abstract: An externally threaded fitting for use in coupling a fluid-conducting tube to a fluid-processing system threaded entrance opening is provided with a tapered-bottom groove immediately above and adjacent the fitting external thread, and with a doubly-tapered, polytetrafluoroethylene material seal element contained in the tapered-bottom groove. Upon proper installation in the system threaded entrance opening, the doubly-tapered seal element is fully isostatically compressed with total concealment of fitting external threads.

Abstract: A pipe fitting for use with fluid-holding apparatuses has a thread that matches any of several different types of pipe threads of the same diameter. Imperfect sealing is eliminated by simple means by taking advantage of a small chamfered area that is provided at the outer end of an internally threaded bore. An external thread matching several different types of internal pipe threads of the same diameter has a flared surface tapered at an angle of approximately 90 degrees at its base. A sealing member to seal the clearance between the pipe fitting and the internal thread in the fluid-holding apparatus provided at a point corresponding to the chamfered area that is positioned slightly outside the periphery of the outermost root of the internal thread cut in its outer end.

Abstract: A high pressure liquid containment joint in an apparatus for injecting high pressure liquid into turf. A preferred high pressure liquid containment joint includes an O-ring (72). The high pressure liquid containment joint also includes a cylindrical plug (70). The plug (70) includes a first end and a second end, external threads (71) located between the first and second ends, a shoulder (73) for accepting the O-ring (72) wherein the shoulder (73) is located between the external threads (71) and the second end. The plug (70) also includes a hexhead (75) connected with the first end for accepting rotational force. The high pressure liquid containment joint also includes a high pressure liquid containment vessel for containing high pressure liquid wherein the vessel includes a threaded bore (74) wherein the bore (74) includes internal threads (172) for engaging the external threads (71) and two, smooth machined frusto-conical surfaces (174, 175) for contacting the O-ring.

Abstract: A fluid connector and lock combination is described for connecting a tube to a base element. A relatively fixed, threaded base element has a passageway for passing fluid. A threaded mounting connector for surrounding the circumference of a portion of a tube is provided and which also mounts the tube to the relatively fixed, threaded base element through threaded engagement. The connector maintains a seal between the tube and a corresponding surface in the base element when the connector is sufficiently threaded to a sealed position relative to the base element to prevent leakage of fluid across the seal. A linkage is provided between the connector and the base element for preventing unthreading of the connector from the sealed position relative to the base element. The linkage includes a first portion which is linked to the connector and a second portion which engages slidingly in an axial direction the base element for preventing relative rotation between the connector and the base element.

Abstract: The oil tightness between a union and a seat portion on the outer side surface of a caliper is maintained by a copper packing. A rubber packing is provided on the outside of the copper packing so as to prevent water drops from adhering to the copper packing. As a result, copper ions never dissolves into the water drops, so that the aluminum caliper is prevented from corroding.

Abstract: The present invention is a hydraulic coupling and method of making the same. The coupling includes a male fitting, a female port, and a lock nut. The male fitting has external threads which receive the female port and the lock nut. The female port has an internal tapered recess for mating with an external tapered surface of the skirt of the lock nut. The skirt portion has inner and outer sections which initially form a double angle on the exterior surface. The outer section is bent inwardly to form a tapered external surface forming a steeper internal angle with the male fitting. An O-ring is positioned about the male fitting for sealing the hydraulic coupling within the tapered recess. The fitting of the present invention is also adaptable to the O.R.S. fitting and the S.A.E. flange fitting. A tapered surface of the female port engages an O-ring positioned in an annular groove of the male fitting.

Abstract: A fastener assembly comprises a metal screw and a sealing ring made from an elastomeric material and is useful, in an exemplary application, as a drain plug for an oil pan for an internal combustion engine. The screw head has an undercut, annular recess, within which the sealing ring is seated. The sealing ring has a sealing portion, which when unstressed has an axial thickness smaller than the recess depth, and an adjoining portion or web extending radially inwardly. When unstressed, the adjoining portion has an inner diameter smaller than the major diameter of the threaded portion of the screw shank. The sealing ring when unstressed has an outer diameter larger than the outer diameter of the recess. Moreover, the recess volume is sufficient for the recess to contain the sealing ring over a wide range of cumulative, dimensional tolerances.

Abstract: A pipe joint for use with a pipe thread provided on a fluid apparatus has a thread designed to mesh with any of pipe threads of different types of the same nominal diameter. Design of the pipe joint is simple because the thread provides mechanical connection, whereas a separate sealing member provides a non-leaking union. The screw-in portion of the pipe joint has an external or an internal thread that meshes with the innermost or the outermost of commonly used mating pipe threads of different types having the same nominal diameter. The axial length of the thread is reduced to a minimum within the limit that the desired firm mechanical connection is secure.

Abstract: A fluid coupling assembly particularly adapted for connecting hydraulic conduits to the ports of a fluid manifold. The coupling comprises a male member which is threadedly connected to the port and which includes tapered locking surfaces on the male and female members, respectively, that are in tight frictional engagement when the male member is threaded into the female member. An O-ring is positioned in a pocket and disposed between the threads and the tapered locking surfaces to isolate the locking surfaces from hydraulic fluid, thereby ensuring a dry, frictional wedge lock. The O-ring is of a size that permits it to move axially in the pocket. In a modified embodiment of the coupling, there is provided an adjustable fitting which includes a lock nut having a skirt portion that is wedged into the tapered O-ring pocket.

Abstract: A fitting for connecting a drum containing a fluid product to a pipeline leading to a place of use without introducing contaminant.

Abstract: A dispensing spout includes a tubular body having axially opposite ends of which one end has a cutting edge for penetrating the wall of a container from which a product is to be dispensed and an opposite end of the tubular body has a groove defined by an axial groove portion and two generally radial grooved portions each ending in a blind wall. A ring is freely slidably received on the tubular body and has a tab in registration with the groove. A gasket is sandwiched between the retaining ring and the thread of the tubular body. The tab of the ring is engaged in one of the radially grooved portions for threading the tubular body into the container after the wall has been punctured. The tab is further received in the other of the radial grooves for compressing the gasket and effecting the seal between the dispensing spout and the container.

Abstract: A fluid connection is formed between a tube for carrying fluid and a parent material having a surface wherein the fluid passes between the tube and the parent material. The connection has a first wall in the parent material defining a flow passage having a first diameter in the parent material for the fluid. A second wall is formed between the first wall and the surface of the parent material. Threads are formed in the parent material between the second wall and the surface of the parent material for engaging an insert. A tube having an end portion placed adjacent the second wall is used in the joint wherein the tube is sealed in the parent material between the first wall and the threads in the parent material. An insert engages the threads for maintaining the tube in a sealed condition.

Abstract: A quick connect coupling (20) for fluid tight connection to a threaded fluid port (22). A body (26) of the quick connect coupling (20) having a cylindrical, externally threaded first end (28) defining an axially extending passage (29) into the coupling body (26). Axially slidable sleeve (42) being mounted on the outside of the coupling body (26) for slidable motion between a seal unassisted position and a seal assisted position, the axially slidable sleeve (42) forcing against an elastomeric seal (30) in the seal assisted position so as to provide a fluid tight seal between an end of the fluid port (22) and the coupling (20).

Abstract: An adapter is disclosed for mounting an exhaust muffler onto a threaded exhaust port located at the external surface of an internal combustion engine. The adapter includes a hollow, cylindrical neck portion having screw threads formed on a first end thereof and circumferentially about the outer surface thereof, for threadably engaging the threaded exhaust port of the internal combustion engine. The adapter further includes a plate portion formed on a second end of the neck portion, having a central opening coincident with the hollow interior of the neck portion, with a first face proximate to the screw threads and a second face opposite to the first face. The adapter forms a seal between the external surface of the internal combustion engine and the first surface of the plate portion when the neck portion is operatively engaged with the exhaust port.

Abstract: The invention relates to pipe connections satisfying hygienic demands, comprising two members which can be screwed together and a seal ring of plastically or elastically deformable material lying therebetween, and the object of the invention is to prevent the seal ring from being carried along and being displaced during tightening resulting in formation of nooks that might give rise to bacterial growth, cleaning problems and risks of contamination. According to the invention this object is achieved in that a first member has a first bore and a larger diameter second bore connected thereby by a Z-shaped transition, while a second member has an oblique end surface, a cross-sectionally triangular interspace being formed between the oblique end surface and a shoulder of the transition to receive the seal ring and to be filled out practically completely by the seal ring when the members are screwed together, and the seal ring may even protrude to some extent into the through hole.

Abstract: A small-diameter tubing connector and sealing apparatus for anchoring a tubing end in fluidtight engagement in high pressure service (up to 60,000 psi), said apparatus having four separate sealing areas.

Abstract: The connecting piece includes a hollow many-sided head and a hollow screw which forms one piece with the many-sided head. The screw is provided with an external thread so that it can be screwed into the internal thread of a part of a line or an apparatus. A chamber-like circular recess is worked from below into the many-sided head in the proximity of the end of the thread of the screw. The circular recess is worked into the many-sided head in one operation. The cutting tool is first guided into a gate at the end of the thread of the screw perpendicularly to the longitudinal axis of the connecting piece. Thereafter the cutting tool is guided into the bottom surface of the many-sided head in parallel with the longitudinal axis of the connecting piece. In this way a guide surface at the end of the thread of the screw is formed which is free of obstacles.

Abstract: A pressure tank connector apparatus is described with a connector fitting having a fitting insert sleeve of steel or other harder metal than the fitting body which is crimped over an outwardly extending flange or lip portion of the tank wall surrounding the opening in the pressure tank to which the connector is attached to position the fitting body within the tank and spaced inwardly from the flange. The fitting body is molded of aluminum alloy and the insert sleeve is embedded into the body during molding. A plurality of spaced hemispherical projections are molded onto the outer side of the fitting body and mate with correspondingly shaped indentations on the inner side of the tank wall portion surrounding such opening to prevent rotation of the fitting when a tank connector member is threaded into the central passage of such fitting body.

Abstract: This is an improvement in Wellstein's U.S. Patent No. 3,812,910 issued May 28, 1974 comprising generally: (1) a positive supporting hook for the drop pipe slide member which cooperates with the hanger member on the nipple that extends radially through an opening in the well casing; (2) an improved shaped groove for the gasket in the washer or nut for better sealing the outside of the well casing with the outside of the nipple that extends through the hole therein for withstanding higher pressures; and/or (3) the employment of a pair of gaskets inside and outside the casing surrounding the nipple and contoured to the interior and exterior walls of the casing, also for insuring better sealing.