Abstract: A clamp assembly includes two curved clamp halves terminating in two clamp members, one or more fasteners for fastening the clamp members towards each other so as to apply a radially-inward clamping force, and a multiple-degree-of-freedom hinge that couples the clamp halves to each other so that the clamp halves can translate and rotate with respect to each other.

Abstract: A pipe coupling includes two or more partially annular clamp housings, each of which includes two opposing clamp members and one or more tightening elements for tightening the clamp members towards each other in a direction transverse to an axial length of the annular clamp housings. An elastomeric seal assembly is located in seal housings at opposite axial ends of a cylindrical shell. Tightening the clamp members towards each other causes the elastomeric seal assembly to apply a radially-inward clamping force on a pipe or pipes clamped by the pipe coupling. Radial force grippers are spaced about a circumference of each of the annular clamp housings. Radially-inward forces of the radial force grippers create axially-directed forces on the pipe or pipes clamped by the pipe coupling.

Abstract: A pipe coupling encapsulation assembly includes an elastomeric ring including two elastomeric annular pipe interface portions that extend from two opposite axial ends of an elastomeric intermediate annular portion. The elastomeric annular pipe interface portions have a smaller annular radius than an annular radius of the elastomeric intermediate annular portion. Each of the elastomeric annular pipe interface portions and the elastomeric intermediate annular portion includes edges that face each other when the elastomeric ring is placed around a pipe. A repair coupling includes a band and opposing clamp members extending outwards from ends of the band, the elastomeric ring being radially inwards of the band.

Abstract: A pipe coupling encapsulation assembly includes an elastomeric ring including two elastomeric annular pipe interface portions that extend from two opposite axial ends of an elastomeric intermediate annular portion. The elastomeric annular pipe interface portions have a smaller annular radius than an annular radius of the elastomeric intermediate annular portion. Each of the elastomeric annular pipe interface portions and the elastomeric intermediate annular portion includes edges that face each other when the elastomeric ring is placed around a pipe. A repair coupling includes a band and opposing clamp members extending outwards from ends of the band, the elastomeric ring being radially inwards of the band.

Abstract: A pipe coupling includes two or more partially annular clamp housings, each of which includes two opposing clamp members and one or more tightening elements for tightening the clamp members towards each other in a direction transverse to an axial length of the annular clamp housings. An elastomeric seal assembly is located in seal housings at opposite axial ends of a cylindrical shell. Tightening the clamp members towards each other causes the elastomeric seal assembly to apply a radially-inward clamping force on a pipe or pipes clamped by the pipe coupling. Radial force grippers are spaced about a circumference of each of the annular clamp housings. Radially-inward forces of the radial force grippers create axially-directed forces on the pipe or pipes clamped by the pipe coupling.

Abstract: An accessory for a clamp assembly includes a grip element which has a base portion including two opposite end faces, rows of teeth that protrude from the base portion, the teeth being arranged in rows with gaps separating them, wherein each of the teeth has a shape as viewed from one of the end faces which includes a first shape portion which has straight sides each of which extends from the base portion to an end, wherein a junction of each of the straight sides with the base portion has a radius, wherein the straight sides form borders of the gaps. Each of the teeth includes another shape portion that extends inwards, away from the gaps. The ends of the straight sides of the first shape portion and the other shape portion cooperate to grip a pipe.

Abstract: A seal includes a sealing ring constructed with a first portion folded over a second portion so as to define at least one inner annular space bounded by the first and second portions. At least one hollow portion is at least partially annular, and is formed in the sealing ring in at least one of the first portion and the second portion.

Abstract: An accessory for a clamp assembly includes a grip element which has a base portion including two opposite end faces, rows of teeth that protrude from the base portion, the teeth being arranged in rows with gaps separating them, wherein each of the teeth has a shape as viewed from one of the end faces which includes a first shape portion which has straight sides each of which extends from the base portion to an end, wherein a junction of each of the straight sides with the base portion has a radius, wherein the straight sides form borders of the gaps. Each of the teeth includes another shape portion that extends inwards, away from the gaps. The ends of the straight sides of the first shape portion and the other shape portion cooperate to grip a pipe.

Abstract: A pipe coupling assembly includes a band having an inner annular seal element wrappable around a pipe, opposing clamp members that extend from the band, at least one tightening element for clamping together the clamp members, and a bridge secured to the band with one or more bridge securing fasteners. The bridge spans a gap between the opposing clamp members. Anti-shearing structure is coupled to the bridge and the band, configured to prevent shearing or deformation of the bridge securing fasteners.

Abstract: A pipe coupling includes a pipe housing formed with an annular groove spaced axially from a first end of the pipe housing, a grooved coupling including a ring member that includes a coupling key received in the annular groove, and a grip ring assembly positioned at a second end of the pipe housing opposite to the first end. The grip ring assembly includes two clamp members arranged to be fastened and tightened towards each other by a fastener.

Abstract: A seal includes a sealing ring constructed with a first portion folded over a second portion so as to define at least one inner annular space bounded by the first and second portions. At least one hollow portion is at least partially annular, and is formed in the sealing ring in at least one of the first portion and the second portion.

Abstract: A pipe coupling capsulation assembly includes a band having an inner annular seal element wrappable around a pipe, opposing clamp members that extend from the band, at least one tightening element for clamping together the clamp members, and a plurality of retaining elements extending from the band. Each retaining element overlies a portion of an adjacent one of the retaining elements.

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 pipe coupling assembly includes a band having an inner annular seal element wrappable around a pipe, opposing clamp members that extend from the band, at least one tightening element for clamping together the clamp members, and a bridge secured to the band with one or more bridge securing fasteners. The bridge spans a gap between the opposing clamp members. Anti-shearing structure is coupled to the bridge and the band, configured to prevent shearing or deformation of the bridge securing fasteners.

Abstract: A pipe coupling includes a clamp housing and a seal assembly mounted in at least one end of the clamp housing. The seal assembly includes an outer sealing layer connected to an inner sealing layer with interlocking mating structures that abut against each other in radial and axial directions and prevent the inner and outer sealing layers from separating from each other in the radial and axial directions.

Abstract: A pipe repair fitting (10) includes a pair of opposed generally semi-cylindrical sleeve members (12, 14) including side flanges (16, 18) and first fasteners (20) that engage the side flanges (16, 18) for fastening and encircling the sleeve members (12, 14) together onto a pipe to be repaired. Each sleeve member includes a central longitudinal semi-cylindrical portion (22). A first seal member (26) is disposed in at least one of the longitudinal semi-cylindrical portions (22) for sealing the sleeve members (12, 14) with respect to each other. Semi-annular clamp housings (24, 25) extend from opposite ends of the longitudinal semi-cylindrical portion (22). Ends of the semi-annular clamp housings (24, 25) include opposing clamp members (27). One or more second fasteners (30) tighten the clamp members (27) towards each other so as to apply a clamping force on the pipe to be repaired. At least one end seal (28) is disposed in the semi-annular clamp housings (24, 25).

Abstract: A grip element has a wedge shape including a wedging surface. One or more sets of elongate teeth are on the wedging surface. Another set of teeth with pointed corners are spaced from the elongate teeth in the circumferential direction. The grip element may be non-stamped.

Abstract: A pipe coupling encapsulation assembly includes a repair coupling including an elastomeric seal, clamp members and one or more tightening elements for tightening the clamp members towards each other, and a grip member assembled in the repair coupling. The grip member is formed into an at least partially circumferential band. The band includes a plurality of pipe interface members with protrusions capable of digging into an outer surface of a pipe being sealed. The grip member includes a plurality of radially inner and radially outer bends. The pipe interface members and the protrusions are located at radially inward surfaces of the inner bends.

Abstract: A method for pipe coupling encapsulation includes placing two elastomeric partial rings around pipes on opposite sides of a leaking joint coupling, taking a repair coupling, which includes a band and opposing clamp members extending outwards from ends of the band, and placing the band around the leaking joint coupling such that opposite end portions of the band overlie the elastomeric partial rings, and tightening the opposing clamp members towards each other with one or more tightening elements.