Pipeline flow restrictor

Details Pipeline flow restrictor Pipeline flow restrictor

1981-08-24

1984-07-10

Bryant, III, James E.

Pipes and tubular conduits

With closures and plugs

Inflatable

138 89, 138 40, 138 45, 138 46, 137318, F16L 5512

Patent

active

044587210

ABSTRACT:
An apparatus and process for restricting fluid flow in a pipeline. An improved inflatable sleeve flow restricting apparatus is disclosed which in one embodiment has restrictor arms extending from one or both ends of the flow restrictor cartridge for engagement with the pipeline side wall at their other ends restricting the inflation of the inflatable sleeve thereby allowing inflation to greater inflation fluid pressures providing pipeline fluid flow restriction in pipelines having pressures of up to about 125 psig. A combination boring-insertion tool is described which utilizes fluid pressure to provide force for the hole cutter.

REFERENCES:
patent: 1506418 (1924-08-01), Evensta et al.
patent: 1906151 (1933-04-01), Goodman
patent: 2285392 (1942-06-01), Cline
patent: 2843154 (1958-07-01), Hosking
patent: 3498333 (1970-03-01), Jones
patent: 3842864 (1974-10-01), Riegel et al.
patent: 3870085 (1975-03-01), Schneider
patent: 4144908 (1979-03-01), Dunn

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