Riser assembly for underground pipe connections

Details Riser assembly for underground pipe connections Riser assembly for underground pipe connections

1996-01-29

1997-12-30

Nicholson, Eric K.

Pipe joints or couplings

With casing, lining or protector

285156, 285169, F16L 3500, F16L 4100

Patent

active

057021295

ABSTRACT:
The riser assembly includes a riser for fluid connection between a main fitting and a lateral pipe at different elevations. The lateral pipe is connected to the riser pipe by a 90.degree. bend having an elongated bell along its vertically extending portion for slidably receiving the upper end of the riser pipe. The vertical bell rests on a casing cap overlying a casing pipe concentric with, but spaced from, the riser pipe. The casing pipe terminates in a casing shoe resting on bedding material about the riser whereby loads are transferred to the casing pipe and casing shoe without loading the riser pipe.

REFERENCES:
patent: 2916308 (1959-12-01), Voldrich et al.
patent: 4085950 (1978-04-01), Alfwitz
patent: 4932257 (1990-06-01), Webb
patent: 5031940 (1991-07-01), Stefanos
patent: 5052224 (1991-10-01), Ford et al.
patent: 5054523 (1991-10-01), Rink
patent: 5553971 (1996-09-01), Osborne
"Rubberman Triple Seal Pipe Encasement" brochure, Hail Mary Rubber Co., Inc .

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