Tool insert

Details Tool insert Tool insert

1989-08-15

1991-03-05

Britts, Ramon S.

Boring or penetrating the earth

Bit or bit element

Plural separable cutter elements

175411, 299 79, 407118, 407119, E21B 1046, B23P 1528

Patent

active

049970496

ABSTRACT:
A tool insert having a cemented carbide substrate with a recess formed in one end of the substrate and having an abrasive compact located in the recess and bonded to the substrate. The cemented carbide substrate has two ends joined by a side, and the recess formed in the substrate has a side and a base, with the side sloping inwards towards a center point of the base. The abrasive compact includes a top surface which provides a cutting surface or edge for the tool insert, a bottom surface which is complementary to the base of the recess, and a side surface which is complementary to the side of the recess.

REFERENCES:
patent: 3743489 (1973-01-01), Wentorf, Jr.
patent: 3745623 (1973-07-01), Wentorf, Jr. et al.
patent: 4148368 (1979-04-01), Evans
patent: 4373593 (1983-02-01), Phaal et al.
patent: 4457765 (1984-07-01), Wilson
patent: 4592433 (1986-06-01), Dennis
patent: 4702649 (1987-10-01), Kommanduri

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