Abstract: The invention is directed to a flexible, thin walled seamless container. The container includes a rigid bottom component and a rigid top having an opening. The bottom can be formed to have a first shape, such as a rectangle, and the top can be formed to have a second shape different than the first shape, such as a circle. A cap can be connected to the top to block the opening. The cap can include a pour spout or shaker holes.

Abstract: A gas turbine engine has a service tube assembly including an adjustable joint having a flange axially movable along an end fitting having a male/female connection with a mating part. The flange is threadably engaged with the end fitting to provide for the adjustment of the position of the flange along the end fitting.

Abstract: A liquid medium delivery device has: first and second rigid pipes configured to receive flowing liquid medium from a pump. The first rigid pipe has a first curved portion. The second rigid pipe has a second curved portion. The curved portions are at least partially nested. An actuator is connected to the first rigid pipe or the second rigid pipe or both the first and second rigid pipes. The actuator is operable to move either the first rigid pipe or the second rigid pipe so that either the first curved portion or the second curved portion moves along a common arc of both the first curved portion and the second curved portion. The liquid medium delivery device has an outlet through which liquid medium, for example liquid manure, can be pumped.

Abstract: A sand quantification system includes a box configured to be positioned over a tank. The box includes an openable bottom configured, such that, when the bottom is open, contents within the box are dumped into the tank. The box also includes a filter configured to allow liquid to drain out of the box without opening the bottom. The system also includes a load cell configured to measure a weight of the box and the contents therein without measuring a weight of the tank.

Abstract: A modular valve tree may have two or more blocks. Additionally, a first block may have a flow passage therethrougt, with an inlet and an outlet and a second block may have a flow passage therethrough with including an inlet and an outlet. Further, an insert may be provided comprising sealing elements. The insert may be partially disposed within each of the first block and the second block and the insert has a throughbore fluidly connecting the first block outlet to the second block inlet. Furthermore, the sealing elements are configured to seal external surfaces of the insert against an internal surface of the respective flow passages. A retention system may retain the blocks in position and compress and engage one or more of the sealing elements.

Abstract: A travel joint may accommodate relative movement between an upper and lower completion for communication of well fluids and control signals, while protecting the control lines used for signal control In one example, the travel joint has an upper tubular member telescopically coupled to the lower tubular member to collectively define a flow path for well fluids through the travel joint. A plurality of telescoping control line conduits are secured about a travel joint periphery, each including an outer tube telescopically coupled to an inner tube to accommodate relative movement between the upper and lower tubular members. A control line routed through each telescoping control line conduit. A dynamic or expanding/hardening seal interface may be provided in the control line conduit to protect the control lines routed therethrough.

Abstract: A fluid connector, including a connector body, including a first through-bore, a first surface, a second surface, and a flange, a retaining clip operatively arranged to engage the first surface, the retaining clip being radially expandable within the connector body, and a retaining plate arranged to be inserted into the first through-bore, including a distal surface arranged to engage the second surface, a proximal surface, and a second through-bore, wherein the flange is operatively arranged to be crimped radially inward around the retaining plate.

Abstract: A quick connector for establishing a snapping connection between a tubular male part (50) and a female part (40) of a fluid connection system. The connector has a retainer (10) adapted to be set within the mouth portion (41) of the female part (40) and having a resilient member (20) for snapping engagement with both a thickened portion (52) of the male part (50) and an annular groove (42) in the mouth portion (41) of the female part (40) when the resilient member (20), which is held by the a retainer (10) in an axially fixed position, is stretched in the radial direction due to the snapping engagement with the male part (50).

Abstract: A telescopic rod structure includes an upper rod and a lower rod. The upper rod includes a first rod body and a second rod body. A diameter of the first rod body is less than a diameter of the second rod body. A rod stepped surface is formed between the first rod body and the second rod body. An outer wall of the second rod body defines a guide groove. The lower rod defines a first through hole and a second through hole. A diameter of the first through hole is less than a diameter of the second through hole. A hole stepped surface is formed between the first through hole and the second through hole. A rib is arranged on the second through hole. The second rod body is sleeved in the second through hole. The first rod body upwards passes through the first through hole.

Abstract: Aspects of the disclosure relate to fluid injection systems, apparatus, methods, and associated components thereof that include flexible hoses for wellhead sites. In one implementation, a fluid injection system for wellhead sites includes a pump, a pump manifold, and a flexible hose coupled between the pump and the pump manifold. The flexible hose includes a first end coupled to the pump and a second end coupled to the pump manifold. The first end of the flexible hose includes a first end fitting coupled to the pump, and the first end fitting is oriented at an angle relative to a horizontal plane. The second end of the flexible hose includes a second end fitting coupled to the pump manifold, and the second end fitting is oriented vertically and perpendicularly to the horizontal plane.

Abstract: A plastic coolant fitting for a hybrid module includes an upper coolant tube with a first straight section and a rounded section, and a lower coolant tube with a second straight section fixed to the rounded section by spin welding. The rounded section may include a ring-shaped groove and the second straight section may include a ring-shaped protrusion installed in the ring-shaped groove. Prior to spin welding, the ring-shaped groove and the ring-shaped protrusion may include respective complementary trapezoidal cross-sections.

Abstract: A pipe joint with a socket, and a pipe fitted into the socket. An annular seal is compressed between the socket and the pipe. The seal is electrically conductive and resiliently flexible. The socket or the pipe has a recess which houses the seal. The recess has a ridge in a base of the recess and the seal has a groove which extends around a radial periphery of the seal. The ridge fits into the groove to fool proof the installation, such that a standard non-conductive O-ring seal is more difficult to install in error.

Abstract: An arrangement including a transmission housing forming a lubricant sump and a pipeline including a first piece and a second piece. The first piece and the second piece of the pipeline respectively open into the lubricant sump. The first piece and the second piece of the pipeline are inserted into one another.

Abstract: A pipeline telescopic joint configured to compensate for dimensional changes has: a first pipe section having a first diameter; a second pipe section having a second diameter smaller than the first diameter is slidingly coupled to the first pipe section; an end assembly, which is fixed to the second pipe section an annular seat bounded by two facing cylindrical faces; and an annular gasket, which is housed within the annular seat and has a polymeric casing and a spring housed within the polymeric casing, wherein the polymeric casing is in contact with the cylindrical faces.

Abstract: A connection device has a line portion having, at its end, a radially outwardly projecting abutment flange for abutting against a corresponding abutment flange of a further line portion which is to be coupled to the line portion, and a ring-segment chain comprising a plurality of ring segments connected to one another in a pivotable manner in a common ring plane, wherein the ring-segment ends which form the chain ends can be latched to one another to give a ring-form connection clamp. The line portion is designed in the form of a tubular connection stub with first thread means spaced apart axially from the abutment surface of its abutment flange and in that each ring segment has a radially inwardly projecting clamping flange and second thread means, which are spaced apart axially from said clamping flange and correspond to the first thread means.

Abstract: A fluid filter arrangement, with protection against external contamination, the filter arrangement comprising: a fluid circulating system; a filter cartridge having an exterior surface; a housing having an internal fluid chamber surrounding the exterior surface of the filter cartridge, an open end through which the filter cartridge can pass along a housing axis; and a cover sealed over the open end of the housing in a closed position, the cover in an open position exposing the open end of the housing, the cover including a fluid passage in communication with the internal fluid chamber in the closed position, the cover fluid passage being in communication with the fluid circulating system in the closed position and in the open position.

Abstract: The invention provides an articulated joint in a pneumatic conveying system of a boom of an agricultural dry product applicator. The joint allows adjacent product-conveying tubes and respective joint components to articulate with respect to each other while maintaining a seal for pneumatically conveying product. Joint components may be separated from each other when the boom is folded while articulating with respect to each other without disengaging or creating potential leaks at segment junctures while the boom is extended. The articulated joint includes a rigid socket having a first socket section and a second socket section providing support to a compressible seal having a first seal section and a second seal section. The first seal section is inserted into the second socket section to create an airtight seal in between the first seal section and the second socket section even when boom tube segments flex during use.

Abstract: A fishing rod includes: a reel seat; a blank extending from a front end surface of the reel seat; a cylindrical spacer provided on the blank on the same axis; a hood holder screwed at a front end portion of the reel seat; a hood continuously provided at a rear end of the hood holder; and a rocker including a plurality of support parts extending frontward from near a front end of the hood holder and coming into contact with an outer peripheral surface of the spacer, wherein in a state where the hood holder is screwed into the reel seat side, a protruding part of each of the support parts is close to the spacer.

Abstract: A multi-functional doorway exercise device is an apparatus that safely and securely attaches to a door frame. The apparatus includes a stabilizing bar, a main pullup bar, a first support bar, a second support bar, a left bracket assembly, a right bracket assembly, a left handlebar, and a right handlebar. The stabilizing bar extends across the width of a door frame and locks into the door frame. The main pullup bar, the left handlebar, and the right handlebar allows a user to grasp onto the present invention while performing various exercises with different grip positions. The left bracket assembly and the right bracket assembly attaches the stabilizing bar onto and along both sides of the door frame. The first support bar and the second support bar connect the main pullup bar with the stabilizing bar and allows the main pullup bar to rotate about the stabilizing bar.

Abstract: A sprinkler with a push-in connection includes a sprinkler frame, an operating element, and a sealing cap. The sprinkler also includes one or more sealing gaskets and a retainer. Each such sealing gasket is located at least partially within a groove in the sprinkler frame. The retainer is also at least partially located within a groove in the sprinkler frame. The retainer connects to the internal bore of a welded outlet or a mechanical outlet when the sprinkler is installed in the outlet. The one or more gaskets seal against the internal bore of a welded outlet or a mechanical outlet when the sprinkler is installed in the outlet. The retainer is a spring mechanism so that the diameter of the retainer is reduced when the sprinkler is inserted into the internal bore of the outlet, and the retainer maintains pressure against the outlet internal bore.

Abstract: A thermal energy storage system for comprising a working fluid to store and transfer thermal energy between a heat source and a thermal load and a plurality of vessels to store the working fluid. Each vessel has an interior region and a floating separator piston in the interior region to separate a hot portion from a cold portion of the working fluid. There is a first manifold thermally coupled to an output of the heat source and to an input of the thermal load and fluidly coupled to the interior region of the vessels and a second manifold thermally coupled to an input of the heat source and an output of the thermal load and fluidly coupled to the interior region of the vessels. The vessels are arranged in parallel.

Abstract: An air intake system for a combustion engine includes an air intake duct in fluid communication with an engine intake manifold and a conduit component inserted into the air intake duct along a first assembly direction. The air intake system also includes a hydrocarbon (HC) trap secured to the conduit component within the air intake duct. The conduit component defines at least one retention feature to maintain a position of the HC trap such that removal of the HC trap from the air intake duct results in structural compromise of the at least one retention feature. The air intake duct is also configured to shield the at least one retention feature from user access to inhibit user removal of the HC trap.

Abstract: A floating piston configured to be disposed in a vessel of a thermal energy storage system to separate a hot working fluid from a cold working fluid. The floating piston includes a piston body having a first end, a second end, and a central region. There is a compressible member which is disposed in the central region of the piston and which is configured to engage with an inner surface of the vessel when the piston is disposed in the vessel.

Abstract: A telescoping fluid coupling (10,110) is provided for use with a fluid flow device (12) and includes a coupling body (14,114) having a fluid port (16,116) extending along a longitudinal axis (18,118). A retainer (20,120) is fixed to the body (14,114) and includes a retaining shoulder (26,126). A flange (22,122) is mounted to the fluid port (16,116) and includes a radially inwardly facing guide surface (36,136) that surrounds a mount surface (24,124) and extends longitudinally along the axis (18,118) to provide guided, sliding translation of the guide surface (36,136) relative to the mount surface (24,124) along the axis (18,118). The flange (22,122) further includes a stop shoulder (38,138) to engage the retaining shoulder (26,126) to limit the translation of the flange (22,122) along the axis (18,128).

Abstract: A telescopic drill rod has at least two rod members disposed coaxially to one another, with the inner rod member being axially slidable relative to the outer rod member in a telescoping manner between an extended position and a retracted position. Both the inner rod member and outer rod member are equipped with joints at each end for connection to a drill head and/or another section of drill pipe. The joints also lock the inner and outer rod members in either the extended or retracted positions, and this is accomplished with a unique frusto-conical threaded engagement that is well-suited for transmitting pressure forces.

Abstract: Provided herein is a liner that can be loosely inserted in process pipe to form a lined pipe and to decrease the rate of heat transfer between process fluids flowing through the liner and the process pipe. The liner provided herein can reduce applied thermal loading on the outer pipe resulting from, for example, turbulent mixing between fluids having different temperatures (with or without stratification), circumferential thermal gradients, and/or longitudinal thermal gradients. An annulus between the process pipe and liner can be at least partially filled by process fluids, thereby creating a thermal buffer to further decrease the rate of heat transfer between the fluids and the process pipe.

Abstract: A seal assembly has a connector body with a first section and a second section, movable relative to one another. The first section and the second section each has an open end configured for receiving the free end of a pipe. The open end of the first and second sections are each configured for sealing engagement with the free end of a respective pipe. The seal assembly is movable between a first condition, in which the second section assumes a retracted position relative to the first section, and a second condition in which the second section assumes an extended position relative to the first section. A seal member is provided for creating a seal between the first section and the second sections in said first and second conditions. First and second adaptors are provided, each for association with a respective one of said first and second sections of the connector body and configured for securing at the free end of a respective pipe.

Abstract: A longitudinal expansion joint for piping systems, includes a first casing member and a second casing member telescopically engaged with a second end of the first casing member, the second casing member having a first end adapted to connect to a second pipe and having a second end with a flange portion having a threaded outer surface. A longitudinal adjustment mechanism for longitudinally adjusting a position of the second casing member relative to the first casing member. A locking sleeve for locking a longitudinal position of the second casing member relative to the first casing member. A sealing system including a seal unit disposed between the first casing member, and the second casing member and a push plate disposed against the seal unit. A seal energizing system pushes against the push plate to energize the seal unit to seal between the first casing member and the second casing member.

Abstract: A backflow prevention assembly is configurable with varying lay-lengths and orientations. The assembly includes coupling assemblies and valve bodies that adjust in length and/or rotation to allow for the varying lay-lengths and orientations of the backflow prevention valves and assemblies with and without certification. A coupling assembly is connected to a backflow prevention valve and includes an outer sleeve and an inner sleeve that is slidingly received within the outer sleeve. The lay-length is adjusted by slidably moving the inner and outer sleeves with respect to one another.

Abstract: A pipe system includes a first pipe section and a second pipe section arranged, and together defining a total length, along a longitudinal axis. The first and second pipe sections are movable with respect to each other so as to shorten or lengthen the total length. A fixation member clamps a portion of the second pipe section to a portion of the first pipe section. The fixation member includes an insulator which is electrically insulating and passes no electrical current between the first and second pipe sections.

Abstract: A telescopic drill rod (2) has at least two rod members (20, 30} disposed coaxially to one another, with the inner rod member (30) being axially slidable relative to the cater rod member (20) in a telescoping mariner between an extended position and a retracted position. Both the inner rod member (30) and outer rod member (20) are equipped with joints at each end for connection, to a drill head and/or another section of drill pipe. The joints also lock the inner and outer rod members in either the extended of retracted positions, and this is accomplished with a unique frusto-conical threaded engagement that is well-suited for transmitting pressure forces.

Abstract: A telescoping fluid coupling (10,110) is provided for use with a fluid flow device (12) and includes a coupling body (14,114) having a fluid port (16,116) extending along a longitudinal axis (18,118). A retainer (20,120) is fixed to the body (14,114) and includes a retaining shoulder (26,126). A flange (22,122) is mounted to the fluid port (16,116) and includes a radially inwardly facing guide surface (36,136) that surrounds a mount surface (24,124) and extends longitudinally along the axis (18,118) to provide guided, sliding translation of the guide surface (36,136) relative to the mount surface (24,124) along the axis (18,118). The flange (22,122) further includes a stop shoulder (38,138) to engage the retaining shoulder (26,126) to limit the translation of the flange (22,122) along the axis (18,128).

Abstract: A fluid transfer conduit comprising: an electrically conductive tube of fibre reinforced polymer composite material which has an electrically conductive outer surface and an electrically conductive inner surface; and on at least one axial end of said conduit, a non-electrically-conductive band formed on either the outer surface or the inner surface of the electrically conductive tube. Forming a non-electrically conductive band on the end of the conduit electrically isolates the electrically conductive outer surface of the conduit from the electrically conductive metal socket into which it is to be inserted.

Abstract: A telescopic fitment for connection of a magnetic filter into a central heating system circuit includes a first connector and a second connector, each of the first and second connectors including a filter connection end for connecting with the magnetic filter and a circuit connection end for connecting with the central heating system circuit, at least one of the first and second connectors including an inner pipe and an outer pipe, the filter connection end being provided on one of the inner or outer pipes and the circuit connection end being provided on the other of the inner or outer pipes, the inner pipe being slideable within the outer pipe for adjusting the position of the circuit connection end with respect to the filter connection end, whilst maintaining a sealed fluid path between the circuit connection end and the filter connection end.

Abstract: An adjustable pipe and methods for manufacturing and installing the same may include at least two pipes, a seal structure and a base coupling. The adjustable pipe may be for fluid connection between a first object and a second object. The at least two pipes may include a first pipe and a second pipe that is configured to be received by at least a portion of the first pipe. The adjustable pipe may also include a first inner collar proximate the first end of the first pipe and a second outer collar proximate the second end of the second pipe. The seal structure may be provided between the first pipe and the second pipe and between the first end of the first pipe and the second outer collar proximate the second end of the second pipe.

Abstract: An exemplary bulkhead connector assembly may include a housing that has an inner diameter surface, a first opening and a second opening. The assembly may further have a retainer attached to the housing and one or more feet extending radially inward from the inner diameter surface of the housing. The assembly can also include a collar that has a portion received within the first opening or the second opening. The collar may have an outer surface that cooperates with the feet of the retainer to hold a conduit within the housing.

Abstract: A sprinkler head conversion sleeve/base member made of durable plastic, comprised of a cylindrical sleeve having an opening at the upper end with an external thread for attachment to a gear driven sprinkler head. The lower end of the sleeve having an external thread for attachment to the internal threads of an in-ground sprinkler housing. The open bottom of the sleeve receives water from the lower chamber of the existing sprinkler housing with no direct connect to a pressurized water system, water enters from either the bottom or the side orifice with no additional plumbing. The sleeve also supports internal protrusions which facilitate the mechanical operation of a gear driven sprinkler head used in conjunction with the sleeve.

Abstract: An air grid for supplying air under pressure. The air grid may be used as an air scour system for a filter for removing at least some impurities (e.g., foreign matter of any nature including a solid, a liquid or a gas) from water or wastewater or as an aerator for aerating wastewater in an aeration tank or basin. The air grid includes an adapter for permitting in field adjustment of one or more components (e.g., drop pipe) of the air grid. Preferably, the adapter houses a portion of an air supply header and a portion of a drop pipe such that the air supply header is disposed above the drop pipe. The adapter may include a detachable sealing assembly. A tool may be provided for inserting and/or removing one or more components of the air grid from the operation environment.

Abstract: A drain hose (1) includes a drain hose body (10) and a hard member (20). The hard member (20) includes a notch (22) and hooks (21). The drain hose body (10) includes a protruding portion (14) provided to a part, of an outer periphery of the drain hose body (10), to which the hard member (20) is attached. The protruding portion (14) protrudes to be positioned in the notch (22), and, when force is applied to the drain hose body (10) in a direction to pull the drain hose body (10) from a through hole (P1), depresses edge portions (22a) of the notch (22) in a direction to expand the hard member (20) in diameter.

Abstract: An in-ground sprinkler assembly configured to be height adjustable and/or crush resistant from topside forces. An outer body is configured to receive an inner body therein. The outer body includes one or more wing members to facilitate stability and contain forces applied to the inner body. Across most embodiments, the outer body includes an interior surface configured with one or more recessed networks to facilitate the relative vertical positioning and/or movement of the inner body. The recessed networks of the outer body includes at least one vertical channel configured to engage at least one tab extending outward from the inner body. Securement of the selected vertical position of the inner body is facilitated by an upward bias on the inner body, an outward bias on one or more tabs, and/or a retaining member connected to the outer body that compresses a locking member against the inner body.

Abstract: A joint element connects casing sections of a casing string for transporting fluids and/or gases. The joint element includes a first longitudinal part arranged to be at least partly overlapping a second longitudinal part or a casing section. The first longitudinal part is connected with the second longitudinal part or with the casing sections in a mounted state with the first longitudinal part adapted to move axially relative to the second longitudinal part or the casing sections in an operative state. The joint element includes at least one shear member with a predefined shear value and the shear member is adapted to shear when an axial force exceeding the total shear value of the shear member is exerted, allowing a relative axial movement between the first longitudinal part and the second longitudinal part or the casing sections.

Abstract: A washpipe assembly is described for a passage of pressurized drilling fluid from a stationary first conduit member to a rotating second conduit member. The washpipe assembly comprises a lower union secured to the rotating second conduit member, an upper union secured to the stationary first conduit member, a floating seal assembly attached to the upper union, a rotating seal ring attached to the lower union, and a stationary seal ring attached to the floating seal assembly. The washpipe assembly also includes a washpipe suspended inside the upper union and the floating seal assembly through a waveform snap ring.

Abstract: An exhaust outlet elbow includes: a body having an outer wall and an interior wall, the interior wall defining, at least in part, an interior chamber; a connecting surface located above the interior chamber; and an array of threaded holes located about the connecting surface, wherein the threaded holes terminate in the body. A method of manufacturing an exhaust outlet elbow includes the steps of: forming a body having an outer wall and an interior wall, the interior wall defining, at least in part an interior chamber; forming an connecting surface located between the interior and outer walls; and forming an array of threaded holes in the connecting surface.

Abstract: A tube is surrounded by a ring attached to a sleeve. One end of the tube is attached to a pipe of the pipeline, one end of the sleeve is attached to another pipe of the pipe line. The tube and the ring and sleeve are movable axially relatively to one another when the pipe line expands or contracts linearly. A seal between the ring and the tube ensures fluid tightness of the joint.

Abstract: A pressure joint is provided for use with a floating installation (1) that is connected to a stiff riser (3, 12). A low pressure slip joint (5) connects the installation (1) to the stiff riser (3, 12). A telescopic assembly (13, 14) fitted with a high pressure seal (15) is arranged to be fitted within the low pressure slip joint (5) when in a non-extended configuration, such that normal operation of the low pressure slip joint (5) is not impeded.

Abstract: A vehicle fluid line for transporting high and low pressure fluids of an engine includes a rigid pipe having opposing ends configured to fixedly couple with the engine. An adjustable joint divides a length of the rigid tube into first and second segments. The adjustable joint has a cylindrical housing coupled with the first segment and having an inner diameter. A stop feature protrudes from an outer diameter of the second segment and interfaces with the cylindrical housing to prevent disengagement of the second segment from the housing. An elastomeric grommet is seated between the inner and outer diameters and is configured to maintain a fluid seal that allows the second segment to rotate axially, pivot radially, and slide longitudinally within the cylindrical housing.

Abstract: A telescoping handle for a fishing rod includes a first cylinder having a first diameter, a second cylinder having a diameter greater than that of the first cylinder, and a third cylinder having a diameter greater than that of the second cylinder. The lumen of the second cylinder receives the first cylinder and the lumen of the third cylinder receives the second cylinder. The fishing rod has a butt end received within the first cylinder. An annular flange is formed in the proximal end of the first cylinder, a flexible and resilient material is wrapped around the distal end of the first cylinder and a radially inwardly extending annular crimp which the annular flange abuts is formed in the second cylinder. A cam is inserted into the lumen of the second cylinder at its distal end and locks the handle in its retracted or extended position and any intermediate position.

Abstract: A coupler apparatus for use with concrete segments has a first duct having an end and an exterior surface, a first coupler member having a connector, a second duct having an end and an exterior surface, a second coupler member having a connector, and a gasket received in the connectors of the first and second coupler members for forming a liquid-tight seal between the first and second ducts. The first duct and first coupler member are embedded in a first concrete segment. The second duct and second coupler member are embedded in a second concrete segment. The gasket has a generally annular shape. The gasket has a bulge portion positioned between a first end and a second end. Each concrete segment has an end surface. The bulge portion fits between the end surfaces of the concrete segments.

Abstract: The present disclosure relates to an apparatus having an elongated body configured to be inserted into a tubular structure extending between a first combustor and a second combustor of a gas turbine engine. A movable arm may be positioned proximate to a first end of the elongated body, and the movable arm may be configured to engage a surface of the first combustor when the elongated body is placed within the tubular structure. A drive member may be accessible near a second end of the elongated body, and the drive member may be configured to rotate within the elongated body and to drive the movable arm along a longitudinal axis of the elongated body toward the second end to separate the tubular structure from the second combustor.

Abstract: An apparatus for use with a subsea well includes an upper riser part, a lower riser part, and a weak link coupling the upper and lower riser parts together; and a mechanism coupled between the upper and lower riser parts for damping recoil of the upper riser part following a breaking of the weak link, damping resulting from a plastic deformation of a component or components of the mechanism occurring as the upper and lower riser parts separate.