Excavating tool cutting insert

Details Excavating tool cutting insert Excavating tool cutting insert

1984-03-06

1990-07-03

Massie, Jerome W.

Mining or in situ disintegration of hard material

Cutter tooth or tooth head

Tooth mounted on helical head portion or head with helical...

175410, E21C 3518

Patent

active

049385380

ABSTRACT:
The invention relates to a tool for breaking or excavating hard material, such as asphalt. The tool comprises a cutting insert (11) secured to a tool body (10). For purposes of maintaining the required cutting force low while ensuring that the risk is low that the cutting insert (11) will get loose the cutting insert (11) is provided with a concave portion (17.sup.1) between the tip portion (12) of the cutting insert and a rear shoulder (13) thereon.

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