Roof bit
Patent
·
OSTI ID:5543183
A cutter bit wherein the dust collection openings are formed diametrically opposite each other, on an axis transverse to the longitudinal central axis of the bit body, and at least partly in the tapered dust control surfaces. The junctions of the heel surfaces and dust control surfaces define a pair of crown lines being parallel to one another and in planes which intersect the carbide insert in oblique fashion.
- Assignee:
- Hughes Tool Co.
- Patent Number(s):
- US 4492278
- OSTI ID:
- 5543183
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
01 COAL, LIGNITE, AND PEAT
012000* -- Coal
Lignite
& Peat-- Mining
AIR POLLUTION CONTROL
BOREHOLES
CARBIDES
CARBON COMPOUNDS
CAVITIES
CONTROL
DRILL BITS
DRILLING
DRILLING EQUIPMENT
DUST COLLECTORS
DUSTS
EQUIPMENT
MINING
MINING EQUIPMENT
POLLUTION CONTROL
ROCK DRILLING
ROOF BOLTS
UNDERGROUND MINING
012000* -- Coal
Lignite
& Peat-- Mining
AIR POLLUTION CONTROL
BOREHOLES
CARBIDES
CARBON COMPOUNDS
CAVITIES
CONTROL
DRILL BITS
DRILLING
DRILLING EQUIPMENT
DUST COLLECTORS
DUSTS
EQUIPMENT
MINING
MINING EQUIPMENT
POLLUTION CONTROL
ROCK DRILLING
ROOF BOLTS
UNDERGROUND MINING