Abstract: Provided is an improved coupling for preventing water leakage in heating systems that include solar collector panels which incorporate plastic or rubber tubes that are connected to inlet and outlet water manifolds. The couplings are reinforced, dual durometer materials that are flexible enough to form a strong seal to any cylindrical tubes or pipes utilized in the heating system as well as rigid enough to tolerate the expansion and contraction of the coupling body during extreme conditions of use.

Abstract: A flexible duct includes a hollow tube shape, at least one end, a first circumferential attachment and a second circumferential attachment integral to the at least one end, wherein the first circumferential attachment and the second circumferential attachment are each configured to independently mechanically couple the at least one end around a first inlet or a first outlet, and wherein the first circumferential attachment and the second circumferential attachment are different. A method includes providing a flexible duct, selecting one of the first circumferential attachment or second circumferential attachment of the flexible duct, and mechanically coupling the selected first circumferential attachment or second circumferential attachment around the first inlet or first outlet.

Abstract: An acrylic rubber that is a copolymer in which 1 to 4 wt. % of a reactive halogen group-containing vinyl monomer is copolymerized as a crosslinkable comonomer, wherein 45 to 65 wt. % of n-butyl acrylate, 10 to 35 wt. % of 2-methoxyethyl acrylate and 8 to 30 wt. % of ethoxyethoxyethyl acrylate are copolymerized in 100 wt. % of comonomers other than the crosslinkable comonomer. This ethoxyethoxyethyl acrylate-copolymerized acrylic rubber can suppress the reduction of oil resistance while improving cold resistance represented by a TR-10 value, and by compounding it with a vulcanizing agent corresponding to the crosslinkable group thereof, a crosslinkable composition is formed.

Abstract: An adapter for an induced draft fan includes an installation section; a transition section; and an exit section. The installation section and the exit section are disposed on two ends of the transition section, respectively. The installation section includes an inner ring, an outer ring, a connection plate, and a water storage cavity. The outer ring includes a first end and a second end; the first end of the outer ring is connected to the transition section; the second end of the outer ring is connected to a first end of the inner ring via the connection plate. The inner ring, the connection plate, and the outer ring are connected one by one to form the water storage cavity. The outer ring includes at least one drain hole communicating with the water storage cavity; and a drain pipe is disposed on the outer ring.

Abstract: A connecting pipe has a connecting pipe portion having, at the opposite ends thereof, connection opening end portions. The connecting pipe has a bendable portion provided between the opposite ends of the connecting pipe portion to allow the connecting pipe portion to be bent relative to the longitudinal axis of the connecting pipe portion. The connecting pipe further has rigid portions extending from the bendable portion to the connection opening end portions, respectively. The rigid portions have a higher rigidity than the bendable portion. Bending the connecting pipe portion at the bendable portion allows the connection opening end portions at the opposite ends to be fitted to associated pipe end portions, respectively. The connecting pipe portion has an elastic restoring force to maintain the state where the connection opening end portions are fitted to the associated pipe end openings, respectively.

Abstract: A corrugated band clamp is configured to effectively secure a sleeve around a pipe. The corrugated band clamp comprises an elongate member having a first lateral side and an opposing second lateral side. Typically, at least a portion of the length of the elongate member comprises a corrugated portion and at least a portion of the length of the elongate member comprises a non-corrugated portion. The corrugated portion of the elongate member enables the corrugated band clamp to effectively secure sleeves on pipes with non-parallel surfaces. In addition, applications of the corrugated band clamp system, methods of manufacture and methods of use are provided.

Abstract: A locking mechanism for use with a coupler assembly for sealing pipe is described herein. The locking mechanism comprises a partially hollow cylindrical body having a first end opposite a second end along a common axis, the body defining a first cord path connecting the first end to a first arcuate opening defined in the body and a second cord path connecting the second end to a second arcuate opening defined in the body, wherein the first cord path and the second cord path comprise separate paths. The locking mechanism further comprising first and second caps that are slidably attachable to the first and second ends of the body, respectively and a cord having a first end portion located within the first cord path and a second end portion located within the second cord path.

Abstract: A device for collecting split wood, having a plurality of bar elements, which each have a first and a second longitudinal portion, and a plurality of connecting elements, which connect the bar elements movably to one another. The second longitudinal portion of each bar element extends in a curved manner and the first longitudinal portion extends in a straight manner. The connecting elements cooperate with the second longitudinal portions, and a clamping element, which cooperates with the first longitudinal portions, is designed to firmly clamp the bar elements to a chopping block by their first longitudinal portions.

Abstract: Systems, apparatus and methods for hot tapping into pressurized, coated duct systems for transporting corrosive substances are disclosed. A branch line may be installed in such systems without shutting down or depressurizing the system using the disclosed systems, apparatus and methods without compromising the system coating or resistance to corrosion from the transported substances. Cut edges created when ductwork is cut to install a branch line are captured and sealed between two gaskets, avoiding the need for recoating with difficult to apply corrosive protection materials such as fluoropolymer coatings.

Abstract: A no-hub connector has a tubular gasket enclosed by a tubular shield and includes two end clamps and two intermediate clamps to tighten the connector around the ends of two pipe sections joined by the connector. Axially extending straps are fastened to each ring clamp, and fastened to the shield at the location of each ring clamp encircling the shield. An inward facing shield surface has optional gripping projections and the shield may optionally extend axially past the intermediate clamps to the end clamps. The inward facing surface of the end clamps may have optional gripping projections if the shield does not extend axially to the end clamps.

Abstract: Provided herein is a fluid duct (8) comprising a fluid duct connection end portion (12) for coupling to a component connection end portion (4) via a sealing ring (6), the fluid duct connection end portion comprising a clamping ring seat (14) configured for receiving an adjustable clamping ring therearound, the clamping ring seat (14) extending axially (A) between an entry flange (16) and a tube joining section (18), the tube joining section (18) extending into a fluid duct tube portion (10). The clamping ring seat (14) comprises an extension fold (20) configured to allow the clamping ring seat (14) to expand radially due to a widening of the expansion fold (20).

Abstract: A flexible duct having a hollow tube shape. The flexible duct includes at least one end, and an opening defined by a first edge of the at least one end and forming a duct inlet or duct outlet. The at least one end includes at least a first attachment and a second attachment, and the first attachment and the second attachment are different. The first attachment and the second attachment can be used independently of one another to connect the at least one end to a first inlet or a first outlet. In one embodiment, a flexible duct includes an attachment that is a cuff. In another embodiment, a connector includes two different attachments and the connector can be affixed to a flexible duct end. In another embodiment, a method includes providing a flexible duct with different attachments at one end of the flexible duct, and flowing air through the flexible duct. In a further embodiment, a method includes providing a connector having two different attachments.

Abstract: A connector for joining respective axial extremities of associated first and second axial sections of electrical conduit which includes a cylindrical sleeve that has an interior surface and an exterior surface as well as a first axial extremity and a second axial extremity and a geometric axis. The cylindrical sleeve has an exterior surface proximate to the first axial extremity that includes a first peripheral rib extending around the entire circumferential extent of the exterior surface. The first peripheral rib has an outside diameter that is greater than the diameter of the cylindrical sleeve proximate to the first axial extremity. The cylindrical sleeve has an exterior surface proximate to the second axial extremity that includes a second peripheral rib extending around the entire circumferential extent of the exterior surface, the rib has an outside diameter is greater than the diameter of the cylindrical sleeve proximate to the second axial extremity.

Abstract: The present disclosure relates to enclosures such as optical termination enclosures for telecommunications networks. The enclosures can include housings for accommodating fiber pass-through cables and drop cables. In one example, the enclosure can include tethers having ruggedized fiber opt connectors for coupling to the drop cables or any other cable. The present disclosure also relates to a tether assembly that can include an overmold that anchors strength members to a cable jacket of the tether assembly.

Abstract: Systems, devices and methods for pipe connectors and associated components are disclosed. Features for no hub clamps, for locking mechanisms on no hub clamps, for tools for no hub clamps, and for gaskets are described. The gaskets may be hourglass-shaped or otherwise taper outward near the ends to facilitate assembly onto pipe ends and that compress inward when a clamp is secured over the gasket. The gaskets may reduce in circumference at the gasket ends upon contraction of the gasket by a clamp onto two pipe ends. The gaskets may include collapsible sections that collapse upon contraction of the gasket by a clamp onto two pipe ends. The gaskets may include wedges at the collapsible regions that extend axially and protrude into the channel.

Abstract: A pipe connector has a tube and two binding rings. The tube is made from a soft material and forms at least one fixing segment on two ends. The two binding rings are mounted on the two ends of the tube respectively. Each binding ring has at least one locating segment. The amount of the at least one locating segment is equal to the amount of the at least one fixing segment of the tube. The at least one fixing segment engages with the at least one locating segment to fix the binding ring and the tube. Thus, a user only needs to expand the tube to mount the tube onto a water pipe instead of heating it. Alternatively, engaging the fixing segment with the locating segment prevents the binding ring from moving relatively to the tube.

Abstract: Systems, devices and methods for pipe connectors and associated components are disclosed. Features for no hub clamps, for locking mechanisms on no hub clamps, for tools for no hub clamps, and for gaskets are described. The gaskets may be hourglass-shaped or otherwise taper outward near the ends to facilitate assembly onto pipe ends and that compress inward when a clamp is secured over the gasket. The gaskets may reduce in circumference at the gasket ends upon contraction of the gasket by a clamp onto two pipe ends. The gaskets may include collapsible sections that collapse upon contraction of the gasket by a clamp onto two pipe ends. The gaskets may include wedges at the collapsible regions that extend axially and protrude into the channel.

Abstract: A pipe coupling comprising an elastomeric sleeve, a support sleeve and adjustable clamping bands is provided. Each band has adjustment means comprising a bolt allowing the bands to provide a secure fit on the ends of the pipes to be coupled. The support sleeve comprises contact sections at either end and a compensation section therebetween. The first contact section of the support sleeve is for fitting around a larger pipe than the second contact section. The second contact portion and the compensation section are comprised of fingers of sheet material defined by axial slots therebetween. The elastomeric sleeve comprises a substantially tubular body and end sections provided at each end of the body. The end sections can be folded back over the outer surface of the body to provide circumferential flaps. Each flap defines a partially enclosed channel within which the contact sections of the support sleeve are provided.

Abstract: An improved hose clamp having an annular band having an inner face, tensioning means, and an annular spring liner; the spring liner having a circumferential shoulder near an edge of the liner; and a central, cylindrical, flat contact portion of smaller circumference than the shoulder, and of smaller width than the inner face of the band. The shoulder is adapted to abut the inner face and the contact portion is adapted to contact a hose or other article to be clamped.

Abstract: An induced draft fan, including a volute including a chamber and an air discharge pipe; and a wind wheel disposed in the chamber of the volute. The wind wheel is connected to and operationally driven by a rotation shaft of a motor. The air discharge pipe is disposed on one side of the volute, and includes an inner pipe and an outer pipe surrounding the inner pipe. The inner pipe of the air discharge pipe communicates with the chamber, to form an air discharge passage. An annular groove is disposed between the inner pipe and the outer pipe; and the outer end of the outer pipe is provided with a curved groove, the curved groove extends axially and circumferentially to divide the outer pipe into a fixed part and a flexible part.

Abstract: A pipe coupling includes a rigid cylindrical member, a flexible cylindrical member and a hose clamp. The flexible cylindrical member includes a central tubular member within the rigid cylindrical member. A flexible sleeve extends beyond the rigid cylindrical member and has an inside diameter that is complimentary to a pipe. The sleeve has a first position in which the sleeve is folded back onto the rigid cylindrical member and a second position in which the sleeve is unfolded so as to envelope an end of the first pipe. The central tubular member includes a ledge that has an inside diameter corresponding to an inside diameter of the pipe.

Abstract: A contiguous duct assembly has first and second ducts that share at least one common wall element. An expansion joint is formed at the end of the contiguous duct assembly using a connector element that extends with respective portions into the internal spaces of the first and second ducts. First and second expansion fabrics are coupled to the respective portions from the inside of the ducts using fasteners that are accessible from and disposed within the internal space of the first and second ducts.

Abstract: A clamp apparatus is disclosed which has a duct having an indexing feature formed thereon. A wire clamp is provided which has a length of resilient spring material shaped generally in accordance with a cross sectional configuration and diameter of the duct. A tightening component is operatively coupled to the length of resilient spring material. A portion of the wire clamp engages with the indexing feature to enable the wire clamp to be positioned and held in a desired angular orientation on the duct while being tightened on the duct using the tightening component.

Abstract: A sound-proofed helicocentrifugal fan includes a helicocentrifugal propeller associated with a motor, housed in a casing formed by a central piece and respective end pieces, which pieces are perforated with holes distributed over the entire surface except for the area around the propeller. A sound-absorbing blanket surrounds the casing, and an outer casing is disposed around the entire assembly.

Abstract: The invention relates to a rotary evaporator comprising a rotary drive having a hub and a clamping insert with a sleeve-like basic shape, in particular a clamping sleeve, for the clamping of a steam leadthrough formed as a hollow glass shaft in the hub of the rotary drive, wherein the clamping insert has a longitudinal axis and a first and a second axial end, wherein the clamping insert has two clamping sections which are arranged spaced apart from one another in the longitudinal direction and which each have an outer cross-section tapering toward the first end and of which the clamping arrangement arranged closer to the second end has a larger maximum outer cross-section.

Abstract: A pipe connector comprises a first pipe section 2 having a first end 2a and having teeth 17 formed on its outer surface proximate to but spaced axially apart from the first end 2a. A second pipe section 3 having a second end 3 which, in use, is to be connection to the first end 2a of the first pipe section 2. A sleeve 8 is slidably mounted on the outer surface of the second pipe section for movement between a first extended position, in which a front end 8a of the sleeve 8 projects beyond the second end 3 of the second pipe section so as, in use, to overlap the first end 2a of the first pipe section 2 when abutted against the second end 3 of the second pipe section, and a second retracted position in which said front end is withdrawn so as at least to be aligned with the second end 3 of the second pipe section, the sleeve 8 having teeth 13 formed on it outer surface at least in the region of the front end 8a.

Abstract: A compensator for connecting a first pipe connection piece to a second pipe connection piece that is arranged at a distance from the first pipe connection piece and that can be moved toward the first pipe connection piece includes an inlet pipe, which is fastened coaxially to the outlet opening of the first pipe connection piece, an outlet pipe, which is arranged approximately coaxially to the inlet pipe, is arranged at a distance from the inlet pipe and is fastened coaxially to the inlet opening of the second pipe connection piece, and a woven-fabric compensator, which connects the inlet pipe and the outlet pipe to each other, wherein gas laden with dust can flow through all aforementioned pipes, said gas being directed from the first pipe connection piece to the second pipe connection piece, and wherein a hollow cylindrical inlet guide plate is fastened to the inlet pipe near the first pipe connection piece, the radius of said inlet guide plate corresponding approximately to the inner radius of the first pi

Abstract: A pipe clamping device that clamps a first pipe and a second pipe each other, the pipe clamping device having an annular case with a central opening into which the first pipe and the second pipe are inserted; a tightening member movable between a tightening location where the tightening member tightens outer circumferential surface of the first pipe and the second pipe and a disengagement location where the tightening member does not impose pressure on the outer circumferential surface of the first pipe and the second pipe; and a stopper restricting radial movement of the tightening member such that the diameter of the tightening member at the disengagement location does not extend beyond a predetermined number, the stopper being prepared in the annular case. The pipe clamping device provides easy clamping of pipes since the tightening member at a disengagement location has a predetermined diameter by the stopper of the case.

Abstract: A coupler assembly (10) and method of manufacture (10) for use with pipe comprising a unitary annular body (20) forming first and second cylindrical openings for surrounding a pipe or piping sections to facilitate forming a fluid-tight seal therein. The unitary annular body (20) comprises a medial portion (64) formed from a first material having a first durometer and first and second lateral portions (56, 58) integrally connected to opposite ends of the medial portion (64). The first and second lateral portions (56, 58) are made from a second material having a second durometer relatively higher than the first durometer of the first material. The coupler assembly (10) further comprises at least one clamping assembly (26) surrounding the unitary annular body member (20) adapted for compressing the coupler assembly (10) into a fluid-tight seal.

Abstract: An apparatus for reinforcing a jet pump riser includes: an elbow upper clamp for covering a riser elbow coupled to a thermal sleeve from an upper side thereof; an elbow lower clamping member for clamping the riser elbow from a lower side thereof; an elbow vertical portion clamping member for covering a vertical portion of the riser elbow; and an elbow horizontal portion clamping member for covering a horizontal portion of the riser elbow. These members are disposed in different orientations with respect to the elbow upper clamp so as to fix the thermal sleeve, the riser elbow and the riser pipe.

Abstract: A device for connecting two pipes with different external diameters using a sleeve arrangement which bridges the butt joint between the ends of the pipe facing each other. The device contains at least a fixing sleeve which can take up the clips for the two pipes, and, if necessary, a sealing sleeve which is surrounded by the fixing sleeve.

Abstract: A boot assembly includes a boot and a retention band. The retention band includes a ring, a lever attached to the ring and a clasp associated with the ring and configured for selective engagement with the lever. The boot includes an annular wall defining a hollow interior configured to receive a portion of a drive assembly of a vehicle. The boot further includes a rib, the rib being integral with the annular wall and extending radially outwardly from the annular wall. The rib and the annular wall cooperate to define an annular channel that is configured to receive the retention band. The rib extends radially outwardly beyond the ring, the lever and the clasp of the retention band when the retention band is seated within the annular channel.

Abstract: A pipe coupling support having a substantially rigid body with an inner surface formed to mate with at least a portion of the exterior surface of a pipe coupling installed on pipe. In many cases, the exterior surface of the installed pipe coupling will be non-cylindrical. For example, when pipes of differing diameters or pipes manufactured from different materials must be joined with commonly available pliable couplings. In this instance the inner surface of the body of the pipe coupling support may be formed to mate with a majority of or substantially the entire exterior surface of the installed pipe coupling.

Abstract: Water-conducting household appliance, in particular dishwasher, comprising a circulation pump (3) having a tube-like outlet connector (4) and a subsequent tube (5) connected to the outlet connector (4), wherein a decoupling device (6, 6?) for damping vibrations generated by the circulation pump (3) is provided between the outlet connector (4) and the subsequent tube (5).

Abstract: A pipe coupling support having a substantially rigid body with an inner surface formed to mate with at least a portion of the exterior surface of a pipe coupling installed on pipe. In many cases, the exterior surface of the installed pipe coupling will be non-cylindrical. For example, when pipes of differing diameters or pipes manufactured from different materials must be joined with commonly available pliable couplings. In this instance the inner surface of the body of the pipe coupling support may be formed to mate with a majority of or substantially the entire exterior surface of the installed pipe coupling.

Abstract: Positive locking device for components of snorkels and other equipment such as diving regulators, buoyancy compensator hoses and the like. The locking device in a preferred embodiment comprises a hard plastic C-shaped ring or clamp which is preferably mechanically and/or chemically bonded into a soft plastic component connector during molding of that component. The ring or clamp provides an effective locking feature which prevents inadvertent demating of components during a dive or other activity that could otherwise result in a dangerous loss of function. An additional embodiment of the invention provides an optional indexing feature which serves the useful function of audible and tactile feedback during adjustment of components having the locking device.

Abstract: A pipe coupling support having a substantially rigid body with an inner surface formed to mate with at least a portion of the exterior surface of a pipe coupling installed on pipe. In many cases, the exterior surface of the installed pipe coupling will be non-cylindrical. For example, when pipes of differing diameters or pipes manufactured from different materials must be joined with commonly available pliable couplings. In this instance the inner surface of the body of the pipe coupling support may be formed to mate with a majority of or substantially the entire exterior surface of the installed pipe coupling.

Abstract: A coupling apparatus for coupling free ends of a pair of tubular ducts in flow communication with one another, and where the free ends of the ducts are separated by an axial gap. The apparatus may have a sleeve having a length sufficient to span the gap and to overlap portions of the free ends of the ducts when the sleeve is secured to the free ends of the ducts. The sleeve may include a first stretchable ply of material, a non-stretchable ply of material, and a second stretchable ply of material sandwiched together. The non-stretchable ply of material may be disposed between the first and second stretchable plies of material to form a unitary assembly. The non-stretchable ply of material may have an axial length of no more than approximately a length of the axial gap to overlay the axial gap.

Abstract: A system and method for connecting a traditional air chute to an air hose delivering preconditioned air to an aircraft includes an adapter system. The adapter system includes a flexible stage having an exterior surrounding a hollow interior configured to receive air from the air hose and deliver the air to the air chute. The adapter system also includes a rotational stage coupled to the flexible stage and having an exterior surrounding a hollow interior configured to receive air from the air hose and deliver the air to the air chute. The flexible stage is adjustable relative to the rotational stage to selectively move the hollow interior of the flexible stage between extending along a common axis through the air chute and the rotational stage and not extending along the common axis.

Abstract: A pipe connection assembly is disclosed including a cylindrical hub having an interior diameter and a leading end having an exterior beveled surface that defines a leading edge of the hub; and a cylindrical elastomeric sleeve having an inner end that includes a radially inwardly projecting lip having a seat surface inclined to correspond to the beveled surface of the hub so the seat surface engages the beveled surface of the hub. The lip includes an annular stop projecting inwardly and having an interior diameter that is less than the interior diameter of the hub, thereby to define a stop surface that contacts the leading edge of the hub when the hub is inserted into the sleeve. The assembly restricts to a minimal amount the penetration of a hub component of the assembly into the cored hole of the mainline pipe to which the assembly is connected.

Abstract: A root-repellant underground drain-pipe coupling, which may be made of the same resilient rubber-like material as sleeve-type drain-pipe couplings of known art, is made somewhat longer than conventional coupling sleeves and is fitted internally at each end with a thin collar of root-repelling material such as copper sheet. Each collar is located just inside the outer entrance to the interfacing regions, held in place by a clamp strap around the sleeve, and optionally made with a portion extending outwardly as an extension or flange for purposes of inspection and increased effectiveness.

Abstract: An apparatus and a system for joining and sealing conduits are provided. The apparatus includes an edge trim positioned proximate to an end of a first conduit, and a sleeve positioned between the first conduit and a second conduit. The sleeve includes a flexible end positioned adjacent to the edge trim such that a portion of the flexible end of the sleeve overlies at least a portion of the edge trim, a semi-rigid end opposite the flexible end and positioned over at least a portion of the second conduit, and a flexible medial portion extending between the flexible end and the semi-rigid end. The apparatus also includes a retaining element configured to be secured over the flexible end of the sleeve such that a portion of the flexible end of the sleeve is sandwiched between the retaining element and the edge trim.

Abstract: A system for attaching a thin film sleeve to a drum using a flange made of thermoplastic material. The inner surface of the flange having an integrally molded portion, where the integrally molded portion is used to create a seal with a different thermoplastic material. The second thermoplastic material can be attached to the drum, thereby forming a seal between the drum, the second thermoplastic material, and the flange. The outer surface of the flange being integrally sealed with the thin film sleeve, thereby creating a barrier between any product being transported through the sleeve to the drum.

Abstract: A connection assembly for pipes is provided. The assembly includes a pipe, a corrugated conduit, a circumferentially contractible seal positioned between portions of the conduit and the pipe, a clamp encircling the conduit, seal and pipe, and a plurality of discrete projections on the inside of the seal to limit the extent of overlap between the pipe and the conduit. The seal is circumferentially contractible to secure the conduit and the pipe together with the seal serving to effect a gas-tight seal while filling the annular gap between the conduit and pipe.

Abstract: A pipe coupling support having a substantially rigid body with an inner surface formed to mate with at least a portion of the exterior surface of a pipe coupling installed on pipe. In many cases, the exterior surface of the installed pipe coupling will be non-cylindrical. For example, when pipes of differing diameters or pipes manufactured from different materials must be joined with commonly available pliable couplings. In this instance the inner surface of the body of the pipe coupling support may be formed to mate with a majority of or substantially the entire exterior surface of the installed pipe coupling.

Abstract: A vented gas riser for use in a system for conducting pressurized gas through a gas carrier pipe from a gas supply source line located below ground level to a delivery point disposed above ground is provided. A fluid tight gas riser protective casing is disposed around said carrier pipe and creates a gas escape passageway in an elongate annular space between the carrier pipe and the casing. Any gas which leaks from the gas carrier pipe is captured in the gas escape passageway. A riser transition head, which includes at least one vent passageway, provides a fluid connection with said gas escape passageway and with the atmosphere such that any gas which leaks in the vicinity of the gas escape passageway can escape through the at least one vent into the atmosphere.

Abstract: A vented gas riser for use in a system for conducting pressurized gas through a gas carrier pipe from a gas supply source line located below ground level to a delivery point disposed above ground is provided. A fluid tight gas riser protective casing is disposed around said carrier pipe and creates a gas escape passageway in an elongate annular space between the carrier pipe and the casing. A containment chamber is disposed below ground level which creates a confined space which has, as its only egress, a fluid connection to a gas escape passageway. Any gas which leaks into the containment chamber is directed into the gas escape passageway. A riser transition head, which includes at least one vent passageway, provides a fluid connection with said gas escape passageway and with the atmosphere such that any gas which leaks into said containment chamber is directed through the gas escape passageway and through the at least one vent and into the atmosphere.

Abstract: A pipe clamp includes a deformable cylindrical sealing sleeve having a continuous side wall with a slotted opening extending 180 degrees around the circumference of the side wall adapted to receive a gate valve plate. The slotted opening has protruding lips bordered by clamping wedges. Clamps are provided for clamping the sealing sleeve to a pipe. Pressure members are provided. A clamping force with pressure members upon the clamping wedges to clamp the lips into a closed position thereby creating a fluid tight seal when the gate valve plate is removed.

Abstract: A flexible header joint for a high performance automobile is provided, wherein the first end of the joint receives a header collector and the second end of the joint receives an exhaust pipe. A cylindrical clamp maintains the joint in position to the header collector, the clamp having three spring retainers circumferentially positioned around the clamp. When the automobile is in motion, the clamp allows for the header to twist and rotate relative to the exhaust pipe while still maintaining the seal and thus preventing leakage of exhaust.

Abstract: The present invention provides an expansion-deflection coupling which allows for higher angular deflection, as well as greater axial expansion and compression with increased parallel offset movements. The coupling includes a pair of identical hubs adapted to accommodate conduits within, and a flexible hollow cylinder extending between the hubs. At least one mid-coupling is located within the cylinder, and at least two plastic funneled tubes, each of which extends securely within the cylinder between the mid-coupling and one of the hubs. One of the hubs is secured to a union coupling.