Ductile iron pipe joint employing a coupling and coupling theref

Details Ductile iron pipe joint employing a coupling and coupling theref Ductile iron pipe joint employing a coupling and coupling theref

1994-08-15

1996-01-02

Nicholson, Eric K.

Pipe joints or couplings

Packed

Sleeve

285370, 285351, 285464, 285 55, 285347, F16L 7100

Patent

active

054801966

ABSTRACT:
A pipe joint capable of transmitting high axial compressive loads includes a reduced wall thickness section at the ends of the pipe to be joined and a coupling sleeve supported in telescoping relation with the reduced wall thickness section. Shoulders formed at the ends of the reduced sections bear against the ends of the sleeve, and the ends of the reduced thickness sections bear against each other so that a portion of the axial compressive load is transmitted through the coupling sleeve and a portion through the reduced thickness sections and a substantially uniform unit stress is maintained. O-rings carried by the coupling sleeve provide a fluid-tight seal between the sleeve and the adjacent surface of the reduced thickness section of the pipe.

REFERENCES:
patent: 2829909 (1958-04-01), Magnani
patent: 2900199 (1959-08-01), Logan
patent: 3066961 (1962-12-01), Gerin
patent: 3224798 (1965-12-01), Hausmann
patent: 3582113 (1971-06-01), Cauthery
patent: 3781040 (1973-12-01), Lasko et al.
patent: 3993334 (1976-11-01), Fridman et al.
patent: 4400019 (1983-08-01), Fruck
patent: 4550936 (1985-11-01), Haeber et al.
patent: 5092633 (1992-03-01), Burkit
patent: 5174615 (1992-12-01), Foster et al.
patent: 5205671 (1993-04-01), Handford
patent: 5330238 (1994-07-01), Carlstrom

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