초록 ▼

A repair coupler including two identical mating coupler members having a complementary relationship is disclosed. Each of the two complementary coupler members is formed to include a portion of semicircular cross-section and outwardly extending longitudinal flanges at each side of the semicircular p

A repair coupler including two identical mating coupler members having a complementary relationship is disclosed. Each of the two complementary coupler members is formed to include a portion of semicircular cross-section and outwardly extending longitudinal flanges at each side of the semicircular portion. Each semicircular portion includes a plurality of spaced grooves for receiving semicircular ribs of a liner. Each coupler member has a longitudinal recess adjacent each side of the semicircular portion for receiving a longitudinal section of the liner. A sealing liner includes a plurality of spaced ribs received in the grooves and longitudinally extending connecting sections received in the longitudinal recesses. The ribs engage a pipe and the longitudinal sections engage each other to form an effective seal. The coupler members are held together by simple fasteners, such as machine screws received in holes in the flanges and hex-headed nuts received in recesses in the flanges. At each end each coupler member has a ridge formed adjacent one of the aforementioned outer grooves to protect the coupler against liner blowouts longitudinally of the coupler and may also have ridges formed adjacent the inner grooves. The ridges are formed with knife edges which engage the pipe and are slightly compressed in the full assembled position of the coupler to provide support for the pipe. Further knife edges for engaging the pipe are provided in a diagonal arrangement in the central portion of the coupler. The holes in the coupler flanges contain restricted portions to retain the machine screws and the recesses in the flanges are shaped to retain the nuts.

대표청구항 ▼

A coupler for sealing leaks in an existing pipe and for connecting first and second pipes in leakproof relationship comprising: (a) first and second substantially identical complementary coupler members adapted to be assembled on a pipe; (b) each of said coupler members comprising a central semicirc

A coupler for sealing leaks in an existing pipe and for connecting first and second pipes in leakproof relationship comprising: (a) first and second substantially identical complementary coupler members adapted to be assembled on a pipe; (b) each of said coupler members comprising a central semicircular portion and flanges extending laterally from said central portion; (c) each of said semicircular portions having a plurality of longitudinally spaced grooves formed therein; (d) each of said flanges having a longitudinal recess formed therein adjacent the corresponding edge of said semicircular portion; (e) a liner received in each of said members and adapted to engage a pipe in sealing relationship; (f) each of said liners comprising a plurality of semicircular ribs, each of said ribs being received in a corresponding one of said grooves; (g) each of said liners further including longitudinal ribs connecting the ends of said semicircular ribs, each of said longitudinal ribs being received in a corresponding one of said longitudinal recesses; (h) fasteners engaging said flanges for causing said liners to be urged against the pipe in sealing relationship; (i) said semicircular portion of said coupler member including first ridges extending above the surface of said semicircular portion, each of said first ridges being disposed adjacent the corresponding one of said grooves nearest the end of said coupler member and being displaced toward the corresponding end of said coupler member relative to said groove, each of said first ridges supporting the adjacent rib of said liner against longitudinal pressure blow-out, each of said first ridges being of such height relative to the thickness of the rib extending above the surface of said semicircular portion of said coupler member that, when the coupler elements are in final assembled relationship and said rib is compressed, said ridges engage the pipe for supporting the pipe and minimizing relative movement between the pipe; and (j) each of said flanges including a longitudinally extending projection on the inwardly-facing surface thereof approximately at the outer edge thereof, said fasteners engaging said flanges inwardly of said longitudinally extending projections, said projections providing a gauge for determining when proper sealing pressure has been applied to said coupler.