Two-prong rotary bit, especially for use with roof drills, and insert therefor
Patent
·
OSTI ID:5848236
Disclosed according to the present invention is a two-prong rotary drill bit, especially for use with roof drills. The two-prong bit has a supporting body having an axis of rotation. The two-prong bit has a pair of inserts, one insert on each of the prongs. Each of the inserts has a cutting portion facing in the direction of rotation and a mounting portion. When viewed in a direction parallel to the axis of rotation, each of the inserts will have a cross sectional configuration which is generally wedge-shaped. Also disclosed are wedge-shaped inserts especially for use with roof drill bits.
- Assignee:
- Kennametal Inc.
- Patent Number(s):
- US 4550791
- OSTI ID:
- 5848236
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
42 ENGINEERING
420206* -- Engineering-- Mining & Drilling Equipment & Facilities-- (1980-1989)
BOREHOLES
CAVITIES
DESIGN
DRILL BITS
DRILLING
DRILLING EQUIPMENT
DRILLS
EQUIPMENT
MINE ROADWAYS
MINING
MINING EQUIPMENT
ROCK DRILLING
ROOF BOLTS
ROTARY DRILLS
STRATA CONTROL
TUNNELS
UNDERGROUND FACILITIES
UNDERGROUND MINING
420206* -- Engineering-- Mining & Drilling Equipment & Facilities-- (1980-1989)
BOREHOLES
CAVITIES
DESIGN
DRILL BITS
DRILLING
DRILLING EQUIPMENT
DRILLS
EQUIPMENT
MINE ROADWAYS
MINING
MINING EQUIPMENT
ROCK DRILLING
ROOF BOLTS
ROTARY DRILLS
STRATA CONTROL
TUNNELS
UNDERGROUND FACILITIES
UNDERGROUND MINING