Abstract: The present invention relates to the interconnection of conduits and pipelines carrying liquids or gasses. The invention provides a low-cost multi-angle adjustable joint and a coupling suitable for round-section piping, tubing, air ducts or drainage. Each extremity of the coupling is arranged for connection to an adjacent pipe, filter, pump or other fluid flow item. The invention provides a multi-angle adjustable joint for two section pipes, tubes or ducts, comprising; a first round pipe provided with a first round inner flange disposed at an angle relative to the pipe axis: A second round pipe provided with a second round inner flange disposed at an angle relative to the second pipe axis, the second inner flange being sized to match the first inner flange, and when the two flanges are oriented face-to-face the pipes can be steplessly rotated relative to each other to a position wherein the largest total angle between the axes of the two pipes is at least 30° and is the sum of the two angles.

Abstract: A band coupling for straight line interconnection of flangeless pipes and a built in pipe grip mechanism to resist axial separation forces is provided. The band-clamp coupling comprises an outer housing of cross-section resembling a wide, low-wall channel, the walls thereof facing the center of the pipes, and a low-wall inner channel fitting into the outer channel. The inner channel being provided with spaced-apart inwardly-facing projection adjacent to each of the inner channel walls, each projection having a first sloping side axially facing the line of pipe abutment and a second sloping side axially facing away from the line of pipe abutment. A sloped internally-toothed grip washer is disposed along each of the projection second sides; and a seal member is disposed inside the inner channel and extending along the major portion of the width thereof to abut both the first sides axially facing the line of pipe abutment.

Abstract: An improved static seal element, sometimes referred to as a gasket, which maintains contact with a pipe and a flange during and after seal compression, such seal being particularly useful in a removable pipe coupling. The improved elastomer static seal element is for the prevention of leakage from between two pipes to be connected end to end, a flange being provided to contact the element, and being at least partially contained in a sheet metal housing which is arranged to apply diametric pressure to seal the element against the outer surface of one of the pipes and against the flange, the improvement being the addition of a stabilizer and seal lip projecting beyond the outer diameter of the seal element to maintain the seal in position against the metal housing vis-à-vis the flange of the center component.

Abstract: The present invention relates to a coupling for cylinders or pipes. The invention provides an improved coupling having an innovative pipe grip preventing inadvertent separation of the two items being coupled. The improved releasable band-clamp coupling comprises a central housing of cross-section resembling a wide, low-wall channel, the housing being curved to be larger than the outer diameter of a pipe. Two curved outer clamp members each configured to contact a wall of the housing and to support a ring seal member and to support a sloped mechanical grip ring, there being further provided proximate to the ends of the curved outer clamp members a pair of substantially parallel pair of clamping extensions.

Abstract: An end clamp housing for attachment to a cylindrical body, the side end housing being a unitary metal casting comprising; an open annular base element provided with a first, ingoing flange at a first side of the base element and a second ingoing flange at a second side of the base element. The second ingoing flange having a cross-section forming a loop extending outwardly beyond the base element; and a pair of clamp members projecting outwardly from the base element. The clamp members being positioned face to face and having an aperture to allow the insertion of a tightening element which can be operated to reduce the distance between the two ends of the open annular base element and thereby press an annular seal element against the outside of a pipe inserted through the seal clamp housing, which after release of the tightening element returns to its original dimensions.

Abstract: The invention provides an improved coupling having an innovative pipe grip preventing inadvertent separation of the two items being coupled. The improved releasable band-clamp coupling comprises a central housing of cross-section resembling a wide, low-wall channel, the housing being curved to be larger than the outer diameter of a pipe, two curved outer clamp members each configured to contact a wall of the housing and to support a ring seal member and to support a sloped mechanical grip ring, there being further provided proximate to the ends of the curved outer clamp members a pair of substantially parallel pair of clamping extensions, and a sloped internally-toothed grip ring comprising a plurality of spaced-apart wedge-shaped gripper units, each unit being connected to both adjacent gripper units by a flexible element to complete said grip ring; and screw clamping elements in contact with said clamping extensions to reduce the distance between said substantially parallel clamping extensions.

Abstract: The present invention relates to a coupling for cylinders or pipes. The invention provides an improved coupling having an innovative pipe grip preventing inadvertent separation of the two items being coupled. The improved releasable band-clamp coupling comprises a central housing of cross-section resembling a wide, low-wall channel, the housing being curved to be larger than the outer diameter of a pipe. Two curved outer clamp members each configured to contact a wall of the housing and to support a ring seal member and to support a sloped mechanical grip ring, there being further provided proximate to the ends of the curved outer clamp members a pair of substantially parallel pair of clamping extensions.

Abstract: A coupling for the straight line connection of pipes and for the mechanical and hydraulic interconnection of the ends of a first pipe and a co-axial second pipe, are both at least 50 mm in outer diameter. The first pipe is equal to or up to 10 percent larger than the diameter of the second pipe. The coupling comprises a central housing having a cross-section resembling a wide, low-wall channel, the walls thereof facing away from the center of the pipes. The central housing prevents the separation of two curved outer clamp members. A pair of substantially parallel clamping extensions allows screw clamping. Two-part circumferential elastomeric seal members comprise a thicker portion and a thinner portion, and a sloped internally-toothed grip washer is disposed proximate to each of the projection second sides.

Abstract: The invention relates to the external sealing and joining of piping. More particularly, the invention provides an improved seal profile which is suitable for use inside pipe couplings. The invention provides a twin-lip seal profile particularly useful in combination with a pipe coupling, the seal comprising: a substantially flat base element, having a first (inner) face and a second (outer) face and two outer edges. Two spaced-apart support blocks projecting upwardly from the first face of the base element, each support block having an outer and an inner face. Two lip members projecting from the outer edges of the base element, the lip members overlapping and resting on the closest support block and leaving a hollow space between the base element, the lip member and the outer face of the support block.

Abstract: The invention relates to the interconnection of co-axial pipes. More particularly, the invention provides a band coupling for straight line interconnection of flangeless pipes and provides a built in pipe grip mechanism to resist axial separation forces. The band-clamp coupling comprises an outer housing of cross-section resembling a wide, low-wall channel, the walls thereof facing the center of the pipes and the housing being curved to be slightly larger than the pipe diameter; a low-wall inner channel fitting into the outer channel. The inner channel being provided with spaced-apart inwardly-facing projection adjacent to each of the inner channel walls, each projection having a first sloping side axially facing the line of pipe abutment and having a second sloping side axially facing away from the line of pipe abutment.

Abstract: The invention relates to pipe couplings, and is an improvement on a cast flange for such couplings housing. More particularly, the invention provides an improved flange and its seal which is attachable to the external surface of a pipe and which can be used to eliminate a small leak if access to a pipe extremity is available. The flange housing is also useful, again in combination with a seal element, for anchoring an adjacent item and for preventing fluid flow along the external surface of the pipe. The invention provides an end clamp housing for attachment to a cylindrical body, the side end housing being a unitary metal casting comprising; an open annular base element provided with a first, ingoing flange at a first side of the base element and a second ingoing flange at a second side of the base element. The second ingoing flange having a cross-section forming a loop extending outwardly beyond the base element; and a pair of clamp members projecting outwardly from the base element.

Abstract: A universal pipe connector for forming a connection with at least one pipe end includes a connector body having an opening for receiving the pipe end. A clamping ring, extending around, and mechanically engaging, the opening, features a tightening mechanism for tightening it between a first maximum diameter and a second minimum diameter which differ by at least a length d. An annular sealing element is deployed around an inner surface of the clamping ring for sealing around the pipe end. The sealing element is formed with a primary inner surface and at least one roughly cylindrical coaxial layer of thickness ½ d. The layer is connected to the primary inner surface by a readily severable connection such that, by selectively removing the layer and tightening the tightening mechanism, the pipe connector forms a sealing connection with pipes having diameters varying over a continuous range of at least 2 d.

Abstract: A sealing of pipe repair clamps is taught providing a flexible inner sheet or sleeve adapted for duty inside a pipe repair clamp to prevent leakage of the fluid to be transported in a pipeline. The inner sheet or sleeve may be used in combination with a band-type pipe clamp of various types. The clamp may also be useful for temporary or permanent repair of a leaking pipe and for connecting two pipe ends. The clamp may include, in a pipe clamp or coupling for pipes by means of a metal clamping band to surround the pipes, and a flexible inner sheet or sleeve disposed inside the clamping band, having reinforcing material bonded to or embedded in the inner sheet or sleeve to inhibit axial expansion when the inner sheet or sleeve is under compression between the pipes and the clamping band.

Abstract: The present invention relates to the sealing of round section bodies, such as the external surface of a pipe. The invention provides an improved static seal element, sometimes referred to as a gasket, which maintains contact with a pipe and a flange during and after seal compression, such seal being particularly useful in a removable pipe coupling. The invention provides an improved elastomer static seal element for the prevention of leakage from between two pipes to be connected end to end, a flange being provided to contact the element, and being at least partially contained in a sheet metal housing which is arranged to apply diametric pressure to seal the element against the outer surface of one of the pipes and against the flange, the improvement being the addition of a stabilizer and seal lip projecting beyond the outer diameter of the seal element to maintain the seal in position against the metal housing vis-à-vis the flange of the center component.

Abstract: The present invention relates to a repair clamp providing an improved pipe repair clamp. The clamp according to the invention could be used in some cases as a coupling to join two pipe ends. The clamp comprises; a) a metal clamping band to surround 3600 of a pipe.

Abstract: The present invention relates to the corrosion protection of a steel pipeline, and to improvements in pipe clamps useful for this purpose. The invention provides a pipe clamp or coupling which makes electric contact with the pipes on which it is assembled and provides a continuous electrical connection, of the pipes. The pipe clamp according to the invention for sealing by means of a metal clamping band to surround the pipe or a pipe coupling for removably holding extremities of a pair of metallic pipes provided with a flexible inner sleeve disposed inside the clamping band; the inner sleeve is attached to the clamping band by means of metallic fasteners, the metallic fasteners being arranged to contact the metallic pipes when the assembly is tightened, to form a continuous electrical connection of the pipes.

Abstract: The present invention relates to the sealing of pipe repair clamps which provides a flexible inner sheet or sleeve adapted for duty inside a pipe repair clamp to prevent leakage of the fluid to be transported in a pipeline. The inner sheet or sleeve of the present invention may be used in combination with a band-type pipe clamp of various types.

Abstract: The present invention relates to a repair clamp providing an improved pipe repair clamp. The clamp according to the invention could be used in some cases as a coupling to join two pipe ends.

Abstract: A universal pipe connector for forming a connection with at least one pipe end includes a connector body having an opening for receiving the pipe end. A clamping ring, extending around, and mechanically engaging, the opening, features a tightening mechanism for tightening it between a first maximum diameter and a second minimum diameter which differ by at least a length d. An annular sealing element is deployed around an inner surface of the clamping ring for sealing around the pipe end. The sealing element is formed with a primary inner surface and at least one roughly cylindrical coaxial layer of thickness ½ d. The layer is connected to the primary inner surface by a readily severable connection such that, by selectively removing the layer and tightening the tightening mechanism, the pipe connector forms a sealing connection with pipes having diameters varying over a continuous range of at least 2 d.