Method and apparatus for prenotching a pipeline

Details Method and apparatus for prenotching a pipeline Method and apparatus for prenotching a pipeline

1981-01-02

1983-02-01

Walton, George L.

Fluid handling

Processes

Cleaning, repairing, or assembling

29413, 30100, 83863, 137318, 138 94, F16L 5500, B23D 2108

Patent

active

043709958

ABSTRACT:
The wall of a pipe is prepared for a subsequent cutting operation by a double-edged shear plate, by cutting axially spaced circumferential notches in such wall with a flexible strand cutter capable of operating in the limited confines of a housing designed in the rectangular pattern of the shear plate. The flexible strand cutter advantageously employs roller cutters on a power transmission type chain which is tensioned against and moved circumferentially over the wall of the pipeline.

REFERENCES:
patent: 1130395 (1915-03-01), Gilmour
patent: 3244339 (1966-04-01), Carner
patent: 3385314 (1968-05-01), Thompson
patent: 3703906 (1972-11-01), Tickett
patent: 3763559 (1973-10-01), Axbjer
patent: 3833020 (1974-09-01), Smith
patent: 3863667 (1975-02-01), Ward
patent: 3943626 (1976-03-01), Williams
patent: 4177827 (1979-12-01), Smith et al.

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