A pipe fitting comprising three annular coaxial sections including a grip section, middle section, and a seal section, the grip section and seal section being separately fixed to the middle section, an annular array of grips in the grip section, an annular semi-rigid seal in the seal section, a hydraulic grip actuator in the housing for radially constricting the grips into gripping engagement with an exterior of a pipe extending into the housing, and a hydraulic seal actuator hydraulically and mechanically independent of the grip actuator, for forcing the seal radially into engagement with an exterior of the pipe, a first mechanical lock for maintaining the grips in contact with the pipe and a second mechanical lock maintaining the seal in contact with the pipe.
F16L 37/62 - Couplings of the quick-acting type pneumatically or hydraulically actuated
F16L 17/10 - Joints with packing adapted to sealing by fluid pressure the packing being sealed by the pressure of a fluid other than the fluid in or surrounding the pipe
A fitting for encasing an extended length of pipe comprising a plurality of segments jointed end-to-end to axially extend over the length of pipe, each of the segments being formed by a pair of mating semi-cylindrical sections, the pairs of mating sections having arcuate ends forming longitudinally extending opposed faces mating at a diametral plane, the longitudinal opposed faces being sealed together, the adjacent axial ends of the segments being circumferentially sealed together, ends of the fitting having internal seals arranged to contact and seal onto the exterior of the pipe whereby the space between said internal seals within said fitting is closed.
F16L 55/172 - Devices for covering leaks in pipes or hoses, e.g. hose-menders from outside the pipe by means of rings, bands or sleeves pressed against the outside surface of the pipe or hose the ring, band or sleeve being tightened by a tangentially arranged threaded pin and a nut
F16L 21/06 - Joints with sleeve or socket with a divided sleeve or ring clamping around the pipe ends
F16L 9/22 - Pipes composed of a plurality of segments
A fitting for encasing an extended length of pipe comprising a plurality of segments jointed end-to-end to axially extend over the length of pipe, each of the segments being formed by a pair of mating semi-cylindrical sections, the pairs of mating sections having arcuate ends forming longitudinally extending opposed faces mating at a diametral plane, the longitudinal opposed faces being sealed together, the adjacent axial ends of the segments being circumferentially sealed together, ends of the fitting having internal seals arranged to contact and seal onto the exterior of the pipe whereby the space between said internal seals within said fitting is closed.
F16L 55/168 - Devices for covering leaks in pipes or hoses, e.g. hose-menders from outside the pipe
F16L 55/172 - Devices for covering leaks in pipes or hoses, e.g. hose-menders from outside the pipe by means of rings, bands or sleeves pressed against the outside surface of the pipe or hose the ring, band or sleeve being tightened by a tangentially arranged threaded pin and a nut
4.
INDEPENDENTLY HYDRAULICALLY CLAMPED AND SEALED FITTING
A pipe fitting comprising three annular coaxial sections including a grip section, middle section, and a seal section, the grip section and seal section being separately fixed to the middle section, an annular array of grips in the grip section, an annular semi-rigid seal in the seal section, a hydraulic grip actuator in the housing for radially constricting the grips into gripping engagement with an exterior of a pipe extending into the housing, and a hydraulic seal actuator hydraulically and mechanically independent of the grip actuator, for forcing the seal radially into engagement with an exterior of the pipe, a first mechanical lock for maintaining the grips in contact with the pipe and a second mechanical lock maintaining the seal in contact with the pipe.
F16L 1/26 - Repairing or joining pipes on or under water
F16L 17/10 - Joints with packing adapted to sealing by fluid pressure the packing being sealed by the pressure of a fluid other than the fluid in or surrounding the pipe
F16L 19/07 - Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on, or into, one of the joint parts in which radial clamping is obtained by wedging action on non-deformed pipe ends adapted for use in socket or sleeve connections
F16L 19/08 - Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on, or into, one of the joint parts with metal rings which bite into the wall of the pipe
F16L 21/04 - Joints with sleeve or socket with elastic sealing rings between pipe and sleeve or between pipe and socket, e.g. with rolling or other prefabricated profiled rings in which sealing rings are compressed by axially-movable members
F16L 21/08 - Joints with sleeve or socket with additional locking means
F16L 23/024 - Flanged joints the flanges being connected by members tensioned axially characterised by how the flanges are joined to, or form an extension of, the pipes
A pipe repair fitting comprising a mating pair of generally semi-circular segments, each formed by an arcuate wall having arcuate ends, the segment walls carrying compressible seals for sealing two pairs of mating arcuate ends of the segments and sealing on the outer periphery of the pipe, at least one threaded hole in each arcuate wall end, a common bolt threaded into each of the threaded holes of each pair of mating arcuate ends and serving to sustain hoop forces in the fitting imposed by fluid leaking out of the pipe and contained by said seals.
