Pipe slitter

Details Pipe slitter Pipe slitter

1989-03-03

1990-09-18

Phan, Hien H.

Cutting

Processes

With preparatory or simultaneous ancillary treatment of work

83 54, 83171, 83401, 83425, 83440, 83856, B26D 308

Patent

active

049570226

ABSTRACT:
Method and apparatus are disclosed for cutting a slit along the length of a pipe in such a manner that expansion of a diameter of the slitted pipe is possible without creating a gap at the slit. This is accomplished by advancing the pipe to be slit past a cutting edge that non-radially traverses the inner and outer circumferences of the pipe wall. In a preferred embodiment the cutting edge, which traverses the pipe wall, is positioned tangentially with respect to the inner circumference of the pipe wall and extends from the inner circumference to intersect the outer circumference of the pipe wall.

REFERENCES:
patent: 284496 (1883-09-01), Seymour
patent: 2389376 (1943-05-01), Mandin
patent: 3715941 (1973-02-01), Andrews et al.
patent: 4160398 (1979-07-01), Bichot et al.
patent: 4516460 (1985-05-01), Vizecky
patent: 4781089 (1988-11-01), Gerber et al.

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