Cutters

Details Cutters Cutters

1982-03-01

1984-04-17

Novosad, Stephen J.

Wells

Means for perforating, weakening, bending or separating pipe...

Perforating or splitting cutter

166 558, 409143, E03F 306

Patent

active

044428910

ABSTRACT:
The invention provides a cutter device for use especially in an underground pipeline or passageway such as a sewer which has been lined with a rigid resin lining, the cutter device serving to cut the lining where it covers lateral connections which must be re-opened. The cutter device according to the invention provides a cutter with a cutting bit which can be moved in an orbital fashion to enable the line of action of the cutter bit to maintain its angularity with respect to the angularity with which the lateral meets the main pipeline or passageway. The cutter bit preferably is a rotatable cutter bit, but in the alternative it may be for example a jet of liquid.

REFERENCES:
patent: 2942092 (1960-06-01), Cammann
patent: 4197908 (1980-04-01), Davis et al.

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