Patent EP0096591A2 successfully refreshed from Google Patents.
EP0096591A2
Expired / Lapsed
EP
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Drilling bit
Assignee: Boart International Ltd
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Filing: 1983-06-08
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Granted: —
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Expires: 2003-06-08
Abstract
Abstract In a diamond impregnated bit scourer particles in the form of silicon carbide are added to the matrix. The mesh size of the silicon carbide is less than that of diamond and the concentration preferably about 40, if the diamond concentration is 40.
Inventors
- 👤 Noel Cuthbert Pope
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-02 07:23
CPC Classifications
E; E21; E21B; E21B10/00; E21B10/46; B; B24; B24D; B24D3/00; B24D3/02; B24D3/04; B24D3/06; B24D3/34; B24D3/342
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
51 words
An impregnated drilling bit which has a working face, the working face having diamond particles embedded in a matrix and the matrix including particles of a scouring agent selected from the group consisting of alumina, boron carbide and silicon carbide, the scouring agent particles being not larger than the diamond particles.
Claim 2
Dependent Claim
51 words
An impregnated drilling bit which has a working face, the working face having diamond particles embedded in a matrix and the matrix including particles of a scouring agent selected from the group consisting of alumina, boron carbide and silicon carbide, the scouring agent particles being not larger than the diamond particles.
Claim 3
Dependent Claim
28 words
The impregnated drilling bit claimed in claim 1 in which the scouring agent particles are between one quarter and two thirds of the size of the diamond particles.
Claim 4
Dependent Claim
20 words
The impregnated drilling crown claimed in either one of the above claims in which the scouring agent is silicon carbide.
References Cited (Backward Citations)
No citation records indexed.
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