Pipe joints or couplings – Packed – Sleeve
Patent
1987-03-18
1988-09-06
Callaghan, Thomas F.
Pipe joints or couplings
Packed
Sleeve
285156, 285197, 138 99, F16L 2106
Patent
active
047688130
ABSTRACT:
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 spaced 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. The ribs of the liner engage a pipe and the longitudinal sections engage each other to form an effective seal. The coupler members are held together by fasteners extending through holes in the flanges. At each end each coupler member has a ridge formed adjacent one of the aforementioned 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. Additional knife edges for engaging the pipe are provided in a diagonal arrangement in the central portion of the coupler. In one form the sealing liner is formed as a continuous web and is retained in the coupler member by projections received in recesses or keyways in the coupler member. The coupler member is formed with spaced transverse ridges and spaced longitudinal ridges to press the liner into sealing engagement with the pipe.
REFERENCES:
patent: 1668499 (1928-05-01), Geiser et al.
patent: 1831641 (1931-11-01), Skinner
patent: 2367447 (1945-01-01), Strout
patent: 2776153 (1957-01-01), Smith
patent: 3954288 (1976-05-01), Smith
patent: 4215883 (1980-08-01), Brown, Sr.
patent: 4226446 (1980-10-01), Burrington
patent: 4417755 (1983-11-01), Gittleman
patent: 4538839 (1985-09-01), Ledgerwood
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