Abstract: An electronic locking differential assembly includes a ring gear including at least one bore formed therein. An electronic actuation mechanism is positioned behind the ring gear on one side of the ring gear. A retaining ring includes a notch formed thereon on an outer circumference of the retaining ring. A portion of the electronic actuation mechanism is disposed in the notch. A lock plate is positioned on a side of the ring gear opposite the electronic actuation mechanism. The retaining ring includes a bore formed therein and a fastener disposed in the bore. The fastener is coupled to the retaining ring and passes through the at least one bore of the ring gear. The fastener is coupled to the lock plate wherein the electronic actuation mechanism is axially connected to the lock plate selectively locking and unlocking the differential.

Abstract: A speed reducer includes an output member to which a driven member is connected, in which the output member is formed of resin and includes a plurality of first screw holes into which fine-thread screws for connection of the driven member are screwed and each of which includes a bottom, and the output member is provided with a weight reduction portion between the plurality of first screw holes in a circumferential direction.

Abstract: A jig includes: a first gear part that can be meshed with an input gear disposed in a casing by being inserted into the casing from the outside of the casing; a torque application part that is fixed to the first gear part, is disposed outside the casing in a state in which the first gear part is meshed with the input gear, and is capable of applying a torque about a first axis, which corresponds to an axis of the first gear part, to the first gear part; and a phase indicator provided on the torque application part to indicate the phase of the first gear part about the first axis.

Abstract: Systems and methods are described for shoulders that can be implemented on shafts in gear systems, such as a drive train. The shoulders, in combination with other components like bearings, or nuts, can help restrict movement of the shaft within the drive train. Use of the shoulders in various embodiments can avoid the need for grind reliefs in corners. Grind reliefs can help in prior art systems where machining or grinding is used at surfaces where raceways of bearings border shoulders that are integrated with the shaft. Grind reliefs create tight spaces where edge breaks are difficult to create. Press-fit shoulders, such as described herein, allow machining and edge break creation on the shaft prior to installation of the shoulder.

Abstract: A central differential power output delivery shaft for a rotary motor used to deliver the power to the drive wheels in a motor vehicle application. The power delivery shaft is a hollow two piece housing which internally houses two separate independent axle shafts, one protruding from each of its ends for the purpose of providing differentiated rotation to the drive wheels of a motor vehicle. The axle shafts rotate along with the central differential power output delivery shaft and are internally operationally connected to the left hand and right drive wheels of the motor vehicle. The axle shafts are also operationally connected to each other inside the central differential power output delivery shaft housing with a geared differentiating arrangement so as to allow them to rotate at different rates with respect to one another.

Abstract: Methods and apparatuses are described to increase emissivity within a gearbox. Loss-of-lube conditions can cause a gearbox in a vehicle to quickly heat up and fail, which could lead to loss of aircraft and/or life. Surface treatments within a gearbox, such as black paint, black oxide coatings, shot-peening, and others, can increase emissivity within the gearbox. The increased emissivity can increase heat transfer via radiation, leading to longer operational capabilities during loss-of-lube conditions.

Abstract: A gear device that is incorporated in a food machine which is used in a process of handling food, includes a first gear, a second gear that meshes with the first gear, grease that is accommodated in an internal space in which a meshing portion between the first gear and the second gear is present, and a gap portion that allows the internal space to communicate with an external space, in which the first gear is made of fiber-reinforced resin, an accommodation amount of the grease is 1% or more and 30% or less of capacity of a grease accommodation space that is configured by a part of the internal space and accommodates the grease, and the grease is grease that does not correspond to food grease.

Abstract: Systems are provided for a gearset for a vehicle transmission. In one example, a system includes a shaft comprising one or more lubricant holes oriented radially within the shaft, and one or more gears positioned radially around a central axis of the shaft. The system further includes a ring positioned circumferentially around the shaft. The ring is shaped with a radially extending portion and an axially extending portion, wherein the radially extending portion may direct lubricant flow from the radially oriented lubricant holes toward the axially extending portion, and the axially extending portion directs lubricant flow from the lubricant holes in an axial direction towards the one or more gears. The axially extending portion and radially extending portion form a cut in the ring.

Abstract: A sphere-type shift control apparatus of an electronic shift system includes a spherical mechanism that includes a shift control portion on a first hemispherical portion of the spherical mechanism and a design portion on a second hemispherical portion of the spherical mechanism. The design portion is configured to provide indirect illumination and transmit images. Power is transmitted from a motor to the rotation shaft of the spherical mechanism using a timing belt or a wire.

Abstract: In a vehicle control device for controlling the vehicle, when automatic downshift control for automatically downshifting a speed ratio of the transmission is executed in the case where a drive current value of the motor obtained when the second oil pump is driven is larger than a maximum value of the drive current value of the motor obtained when the second oil pump is driven in a normal drive state, the vehicle control device increases a minimum rotation speed of the drive source compared to a case where the drive current value of the motor is equal to or less than the maximum value, and when the automatic downshift control is executed in the case where a line pressure generated by a hydraulic pressure supplied from the first oil pump and the second oil pump is larger than a predetermined value, the vehicle control device does not increase the minimum rotation speed of the drive source even in the case where the drive current value of the motor obtained when the second oil pump is driven is larger than the m

Abstract: An apparatus for controlling a vehicle includes an engine including at least one combustion chamber configured to generate power for driving the vehicle by combustion of fuel, a torque converter including an impeller, a turbine, and a damper clutch and configured to convert torque output from the engine through an operation fluid, a continuously variable transmission including a driving pulley, a driven pulley, and a belt, a forward clutch configured to selectively block power delivery between the torque converter and the continuously variable transmission, and a controller configured to perform a slip control of the forward clutch while the vehicle is coasting, re-inject fuel into the combustion chamber of the engine when a fuel re-injection condition is satisfied, release engagement of the damper clutch after performing a slip control of the damper clutch of the torque converter, and fully engage the forward clutch.

Abstract: A method is proposed to complete a power-on upshift while a vehicle encounters wheel slip conditions such as driving in loose sand. The wheels slip conditions may be detected based on a maximum rate of change of an output shaft exceeding a threshold. In response to the wheel slip conditions, one or more shift parameters may be adjusted to bias the shift toward a tie-up and decrease the chance of a flare. These modified shift parameters may include an increased stroke pressure, a delayed off-going clutch release timing, and an increased ratio change capacity.

Abstract: An actuator for actuating a shift element in a transmission of a vehicle, particularly of a utility vehicle, includes a sensor device for detecting angular positions of a rotating component, for example, a shaft in an electric drive for a vehicle. The sensor device includes an annular encoder magnet fastened to a support pin supported on a front side of the rotating component so as to be fixed with respect to rotation relative to it such that the annular encoder magnet at least partially surrounds the support pin. The annular encode magnet is mounted on the support pin as a molded encoder magnet component.

Abstract: Provided is a clutch engaging arrangement for a clutch of a transmission arrangement. The clutch engaging arrangement includes a spring-loaded connecting rod having a connecting portion arranged at a distance from an engaging member of the clutch engaging arrangement when the engaging member assumes the first disengaged position.

Abstract: A transmission device (5) for an electrically drivable vehicle axle (1) includes a transmission input shaft (7), a transmission output shaft (10) connected thereto via gear-wheel pairs (8, 9), and a parking lock device (15). The parking lock device (15) is arranged in a transmission housing (11) and includes an electric actuator (16) for actuating a locking pawl (18) engageable with a parking interlock gear (19) operatively connected to the transmission output shaft (10). The locking pawl and the parking interlock gear (19) are arranged in an interior space (14) of the transmission housing (11) that is acted upon by oil, and the electric actuator (16) is arranged in an oil-free interior space (13) of the transmission housing (11). The output shaft (21) of the electric actuator (16) extends through an intermediate wall (12) and is operatively connected to the locking pawl.

Abstract: A parking brake system for vehicles, in particular heavy-duty vehicles, is provided. The parking brake system has a parking brake actuator having an actuation pushrod slidably housed within an actuator cylinder and adapted to act on a release mechanism of a vehicle brake for unlocking the vehicle brake, and a hydraulic pump operated by an electric motor, adapted to deliver a flow of fluid into the actuator cylinder for moving the actuation pushrod.

Abstract: A park lock unit and method for operation of said unit are provided. In one example, the park lock unit includes a sliding assembly that engages and disengages a parking pawl from a toothed wheel and an electronic actuation assembly configured to engage the parking pawl with the toothed wheel when electric power provided to the electronic actuation assembly drops below a threshold value. The park lock unit further includes a manual release mechanism configured to disengage the parking pawl from the toothed wheel in response to operator input.

Abstract: An oil control ring comprises: an oil ring having a pair of land parts arranged in a sliding direction and connected to each other by a web part; and a coil expander that biases the oil ring toward the outer circumferential side in the radial direction. The web part of the oil ring is provided with a plurality of window holes. In the axial cross-sectional view of the largest opening portion of the window hole in the axial direction of the oil ring, a width H1 in the sliding direction of the oil ring and a length L1 of a combustion chamber-side non-window hole part, which excludes the window hole, in the outer circumferential surface of the web part, satisfy the condition of 0.15>L1/H1?0.

Abstract: An orientation agnostic ring seal includes an annular body defining an axial hole therethrough for fluid passage in an axial direction and having a radial plane that is perpendicular to the axial direction. Both axial sides of the ring seal include a deformable annular protrusion extending from the annular body in an axial direction to a first apex, which is configured to deform upon engagement with a first planar sealing surface, and a first seal ring engagement surface configured to engage a first annular rounded sealing ring. So configured, the ring seal can seal two different types of flow components regardless of its orientation.

Abstract: Seal assemblies, gaskets, bearing assemblies, and their components can be used as pre-packaged seal systems and pre-packaged seal and bearing systems. The seal assemblies can be orientated in different configurations for different applications. Gaskets to restrict flow and gaskets with memory lips to operate as sealing lips can be included to increase the number of sealing points. In a pre-packaged configuration, the cylinder can be a straight cylinder, a stepped cylinder, or a split cylinder. Bearing assemblies can be pre-packaged with the sealing assemblies and service grease may optionally be used to provide lubrication and limit fluid incursion into the spring cavities.

Abstract: Seal assemblies, gaskets, bearing assemblies, and their components can be used as pre-packaged seal systems and pre-packaged seal and bearing systems. The seal assemblies can be orientated in different configurations for different applications. Gaskets or washers to restrict flow and gaskets or washers with memory lips to operate as sealing lips can be included to increase the number of sealing points. In a pre-packaged configuration, the cylinder can be a straight cylinder, a stepped cylinder, or a split cylinder. Bearing assemblies can be pre-packaged with the sealing assemblies and service grease may optionally be used to provide lubrication and limit fluid incursion into the spring cavities.

Abstract: A sealing assembly includes a first component, a second component, and a seal sealing between the first component and the second component. The seal includes a coating. A thickness of the seal is less than about twice the thickness of the coating. A method of fabricating a ceramic matrix composite seal is also disclosed.

Abstract: Provided is a device sealed with a magnetic liquid. The device includes: a rotary shaft, a first bearing, a tank body, a first magnetism isolation ring, a first gasket ring, a first pole-shoe, a permanent magnet, a second pole-shoe, a second gasket ring, a second magnetism isolation ring, a second bearing, an end cover, a pole-tooth and a water delivery coating. The water delivery coating strips are coated on the an exterior circumferential surface of the rotary shaft at intervals, where each water delivery coating strip contains three parts with different water delivering directions individually.

Abstract: Provided is a self-cooling device sealed with a magnetic liquid, related to the field of mechanical engineering sealing technology. The device includes: a tank body, a pole-tooth, a rotary shaft, a magnetic liquid, a first gasket ring, a second gasket ring, a first pole-shoe, a permanent magnet, a third gasket ring, a second pole-shoe, a fourth gasket ring, a fan, a bolt, an end cover, a second U-shape soaking rod, and a first U-shape soaking rod.

Abstract: Shut-off valves for cryogenic fluids are disclosed herein. An example valve includes a valve body defining a flow path and a valve seat, a bonnet coupled to the valve body and defining a bonnet chamber, a plug configured to slide between a closed position, and a stem coupled to the plug. The stem is configured to slide to cause the plug to slide. The valve includes a spindle that includes external threads. The spindle is configured to move along a longitudinal axis of the bonnet as the spindle is rotated about the longitudinal axis via the external threads to cause the stem to slide linearly along the longitudinal axis. The valve includes a pivot ball positioned between and operatively coupled to the stem and the spindle. The pivot ball is configured to translate linear and rotational movement of the spindle into linear movement of the stem and the plug.

Abstract: A butterfly valve includes a purge gas flow path supplying a purge gas for preventing inflow of a control fluid into a magnetic fluid sealing portion from a flow path through an insertion hole. The purge gas flow path is provided with an opening and closing valve for opening and closing the purge gas flow path and a pressure gauge for measuring a pressure value in the purge gas flow path, in the stated order from the upstream side. The purge gas flow path is connected to a portion between the magnetic fluid sealing portion and the flow path of the butterfly valve on the downstream side of the pressure gauge, and communicates with the flow path through the insertion hole. The butterfly valve further includes a control device that controls at least the opening and closing valve. The control device is provided with a monitoring program for monitoring a pressure value.

Abstract: A spool valve includes: a sleeve extending in an axial direction thereof, including inlet and outlet ports for working fluid; a spool housed in the sleeve; a biasing device that presses a base end of the spool toward a tip end of the spool; and a pressure detecting port opening toward the tip end. The spool includes: first and second land sections; a groove section located between the first land section and the second land section, having a width in the axial direction to connect between the inlet port and outlet port; a recess portion formed on an outer peripheral surface of the second land section; and a connection passage for the working fluid formed in the second land section, connecting between the groove section and the recess portion. A path hole is formed in the sleeve facing the recess portion of the spool.

Abstract: A closure member is configured for use in a valve. These configurations may include a plug with grooves or “flutes” that extend along its length. Inserts in the flutes may comprise materials, like ceramics, that are different than the material that forms the core or base portion of the plug. These inserts are useful to slow erosion of the device, particularly in the flutes, which form an outwardly-facing surface that is subject to high velocity flow in the valve. This feature can extend service life of the plug, particularly in highly-erosive process fluids, like particle-entrained fluids commonly found in hydrocracking or refining operations.

Abstract: A diverter valve assembly is provided, including a diverter valve chamber, an inlet to the diverter valve chamber, a first outlet, a second outlet, a first fluid flow path from the inlet to the first outlet, a second fluid flow path from the inlet to the second outlet, a diverter valve member, and a motor coupled to the diverter valve member. The motor drives movement of the diverter valve member within the valve chamber between a first end point and a second end point located further from the motor than the first end point. When the diverter valve member is at the first end point the second fluid flow path is open and the first fluid flow path is closed. When the diverter valve member is at the second end point the second fluid flow path is closed and the first fluid flow path is open.

Abstract: A timer valve 1 relating to an aspect of the present disclosure includes: a housing 2 including a spool hole 5 being in communication with a drain port 9, a feeding port 6 configured to receive hydraulic oil fed thereto and a discharge port 7 configured to discharge the hydraulic oil; and a spool 3 movably provided in the spool hole 5. The spool 3 has a first connection recess 15 defined in an outer surface 3a, the first connection recess 15 being configured to establish communication between the feeding port 6 and the discharge port 7; and a liaison channel 30 establishing communication between the first connection recess 15 and the drain port 9. Within the liaison channel 30, a filter 25 is formed between the spool hole 5 and the outer surface 3a of the spool 3 to stop foreign matter from entering into the drain port 9.

Abstract: A valve device includes: a case having a valve chamber and first to third water communication ports communicating with the valve chamber; first and second valve bodies disposed in the valve chamber; and a shaft body connected with the first valve body. The first valve body is rotated about a central axis of the shaft part. The second valve body is rotated about the central axis together with the first valve body. When rotated about the central axis in a first angle region, the first valve body changes a first flow rate, i.e., a flow rate of water between the first and third water communication ports, and a second flow rate, i.e., a flow rate of water between the second and third water communication ports. When the first valve body is rotated about the central axis in a second angle region, the second valve body changes the second flow rate.

Abstract: A water conservation faucet seamlessly integrating a tactile feedback mechanism into existing faucets to spur user controlled pre-set water flow rate, energy conservation, and cost savings. During movement of the handle, the user receives tactile feedback through the handle indicating the position of the handle as it moves from one pre-set position to the next. In addition to tactile feedback, the handle provides visual feedback to the user as the handle remains in the fixed position until the user chooses to move handle to another position.

Abstract: An isolation valve includes an isolation valve body, a rotatable member and a connecting member. An outer cylinder section of the rotatable member has an end portion with an increased inner diameter towards an opening that an inner cylinder section of the isolation valve body penetrates through, and has an inwardly facing annular groove on its own inner peripheral surface between the end portion and a female thread of the rotatable member. The inner cylinder section has an outwardly facing annular groove facing the inwardly facing groove on its own outer peripheral surface. The connecting member has a cross section that is sized to fit within the outwardly facing groove. The connecting member is positioned astride the inwardly facing groove and the outwardly facing groove so as to prevent a relative movement between the inner cylinder section and the rotatable member in an axial direction along a rotation axis.

Abstract: A check valve (1) is described, the check valve (1) including a valve housing having a first port (2) and a second port (3) connected to a valve chamber (4), a valve seat (5) having a valve seat axis (6) and being arranged between the first port (2) and the valve chamber (4), and a valve element (7) movably arranged within the valve chamber (4) between the valve seat (5) and a stop face (8) opposite the valve seat (5), wherein the valve housing includes a first part (9) having the first port (2) and a second part (10) having the second port (3) and being connected to the first part (9). Such a check valve should have a simple design. To this end the second port (3) opens into the stop face (8) by means of an array of holes (12), wherein the cross section area of the holes (12) is smaller than the smallest cross section area of the valve element (7).

Abstract: A safety valve having a simple structure and a small operating pressure error and configured to maintain a constant pressure in a battery by effectively discharging gas in the battery is provided. A safety valve according to one aspect of the present invention, which is mounted on a battery and operates to maintain a predetermined internal pressure in the battery when the predetermined pressure or more is applied to the battery, includes a main body, a sub body, a cap membrane, and a cover, and a protrusion is formed on an end portion of the cap membrane to be in line contact with an outer surface of the sub body. The main body has a hollow structure formed so that a top communicates with a bottom and a discharge hole in one side surface of an upper portion. The sub body is formed to protrude from an inner circumferential surface of the main body, and a through hole is formed in one side surface of a lower portion of the sub body.

Abstract: The present invention relates to valve apparatus for regulating flow. The apparatus comprises a valve housing having a bore. A piston member (7) is movable within the bore, a first spring member biasing the piston member in a first direction within the bore. A first rod (12) extends through the piston member, the first rod having an end (13) for engaging a second spring member (14) provided between the end (13) and a spring seat (8). The piston member (7) and spring seat define a chamber (9) which houses the second spring member (14) and into which the first rod is slidably received. Further, a second rod extends from the spring seat and is coupled to valve member seat. A damping means is provided to damp the movement of the chamber (9) within the bore.

Abstract: Embodiments of a flow control apparatus of the present invention generally include a vessel equipped with a pre-filter assembly, a substantially vertical, bottom-feeding liquid inlet line, a vapor space pressure equalization line, and a liquid outlet, wherein the vessel contains a pair of connected, horizontally oriented, O-ring and/or piston ring equipped sealing plates that are designed to rise and fall as a pair in response to gravity provided liquid pressure in the sump of the vessel, whereby an elevation of the sealing plates provides the liquid in fluid communication with the liquid outlet via internal orifices fluidly connected to one or more fluid conduits. Embodiments of a method of using embodiments of an apparatus of the present invention to control liquid flow are also provided.

Abstract: A valve assembly for controlling inflation and deflation is provided. The valve assembly includes a rapid-deflate valve cover having a central passage extending through the annular body; an internally threaded portion positioned within the central passage configured to threadingly interface with an externally threaded portion of a valve stem; and a pressure relief formed in the internally threaded portion. The rapid-deflate valve cover can include a valve core positioned within the central passage near the proximal end and configured to selectively permit gas flow from the proximal end into the central passage past the valve core. When the rapid-deflate valve cover is in a closed position, the annular body contacts the valve stem to prohibit gas flow through the central passage. When the rapid-deflate valve cover is in the open position, the body is positioned away from the valve stem to permit gas flow into the central passage.

Abstract: Various embodiments of the present technology may provide a valve manifold having a plurality of tiers with various through-holes and channels. The plurality of tiers may be connected together such that the through-holes and channels form a single, continuous flow path.

Abstract: A ball valve includes valve seats surrounding a valve ball and a valve housing surrounding the valve seats. A central flow passage extends through the valve seats, the valve ball, and the valve housing. Seals are positioned between a non-vertical bottom wall of each valve seat and corresponding non-vertical end walls of the valve housing. When a fluid pressure is applied to the ball valve in a closed position, one of the valve seats moves away from the valve housing to disengage the seal from the corresponding non-vertical housing end wall. The valve seat's movement provides an equalizing flow passage between the valve seat and the valve housing and into an interior portion of the valve ball, thereby allowing for pressure equalization that prevents deformation of the valve ball. The valve housing is formed by valve seat carriers, a cavity in a valve sub, or a combination thereof.

Abstract: A fluid management system includes a bladder assembly having a first sheet of weldable plastic material and a second sheet of weldable plastic material bonded to the first sheet to form welded areas surrounding and defining a plurality of bladder chambers between the first and second sheets.

Abstract: In a tire pressure adjustment method, an adjustment device in a vehicle obtains a first distance between the vehicle and a target object in front of the vehicle in a moving direction. The adjustment device determines a second distance that is a safe braking distance of the vehicle. When the first distance is less than the second distance, the adjustment device determines a tire pressure adjustment value of a tire of the vehicle based on the first distance and the second distance. The adjustment device determines a target voltage based on the tire pressure adjustment value, and adjusts a power supply voltage of a valve of the tire based on the target voltage. The valve exhausts air out of the tire after being powered on, and an exhaust velocity of the valve varies with different power supply voltages.

Abstract: A magnetic non-return valve having a valve body and a valve housing arrangement, wherein the valve body is guided so as to be axially displaceable in the valve housing arrangement and closes the fluid duct of the valve housing arrangement by way of a holding force acting counter to the direction of flow, wherein the axial holding force is generated by a repelling magnet arrangement, wherein a concentric piston connected to the valve body via the end face comprises a first magnet arrangement and the valve body guide comprises a second magnet arrangement, wherein the first magnet arrangement is arranged in a cavity of the piston and is enclosed so as to be media-tight on all sides, and the second magnet arrangement is arranged in a cavity of the valve body guide and is enclosed so as to be media-tight on all sides.

Abstract: In an actuation apparatus (7) which is configured for actuating a valve arrangement (8), there is provision for the actuation elements (9) for a valve (10) each to be arranged at the corners of a convex polygon (11) with three or more corners.

Abstract: A method of detecting an operating condition of a controllable flow regulator in a fluid flow channel of an HVAC system, comprising transmitting a sonic signal, from a sonic transmitter, directly or indirectly to the flow regulator, the sonic signal being distinguished from background noise by being at least one of: (i) modulated according to a modulation schema, (ii) an ultrasonic signal, (iii) a frequency selected to be away from background noise, receiving a signal from a sonic receiver for detecting the transmitted signal after interacting with the flow regulator; and determining, in an electronic signal processor, the operating condition of the flow regulator on the basis of the signal received.

Abstract: An active balancing valve for a refrigeration and/or air-conditioning application having a valve housing with an inlet orifice, an outlet orifice and a mounting portion, a main valve element with a main pressure balance orifice and a control element at least partially defining a pressure balance passage. Each element is slidable inside the valve housing and comprises a control surface for controlling a fluid flow between the inlet orifice and the outlet orifice. The control element closes the main pressure balance orifice of the main valve element in a closed state of the valve.

Abstract: An infusion pump is provided that includes a housing, a door assembly coupled to the housing, a sensor disposed within the housing and a lever disposed within the housing. The lever includes a first end comprising a wall configured to engage an infusion tubing, a second end comprising a pocket, a spring disposed in the pocket, the spring configured to bias the lever against the door assembly and a pusher disposed on the first end, the pusher configured to align the infusion tubing with the sensor when the door assembly is closed. A method of operating the infusion pump is also provided.

Abstract: Pipe supports for use in supporting pipework in a building are described, the pipe supports including: a pipe supporting region which in use receives and supports a pipe; an attachment region for attaching the pipe support to a threaded rod to suspend the pipe support from the threaded rod; the attachment region includes a rod receiving aperture; and the rod can be introduced into the aperture by bringing the pipe support towards the rod in a direction that is perpendicular to the length of the rod.

Abstract: A hose assembly includes an inner tube, a connector, a collar, and an outer metal tube. The connector includes a stem portion inserted into a distal end of the inner tube and a body portion extending radially outward and axially rearward of the stem portion. The collar is substantially coaxial with and surrounds the distal end of the inner tube, with the collar being in radial compression against the inner tube. The outer metal tube is substantially coaxial with and surrounds the inner tube and the collar, with the outer metal tube terminating at a distal end welded to the body portion of the connector.

Abstract: A pipe fitting includes a tubular member having first and second sockets, each configured to receive an end of a pipe section such that a gap exists between an outer surface of each pipe section and an inner surface of the sockets. A pair of ports extend through the tubular member in each socket and are in fluid communication with each gap. Each socket may include one or more annular sealing members therein.