Boring or penetrating the earth – Bit or bit element – With helical-conveying portion
Patent
1984-05-16
1986-04-01
Novosad, Stephen J.
Boring or penetrating the earth
Bit or bit element
With helical-conveying portion
175395, E21B 1044
Patent
active
045791805
ABSTRACT:
A drilling bit having two helical withdrawal grooves which extend from the drilling head in the direction toward the insertion or chucking end. The withdrawal grooves have least slope in the vicinity of the drilling head. In the other regions, the withdrawal grooves have a different slope. As a result, no cross-sectional jumps disposed at uniform intervals are provided on the drilling bit, so that transverse oscillations cannot be reinforced by partially constantly or continuously reflected pulses. A considerable reduction in noise is achieved. Furthermore, the central portion of the drilling bit, which is critical during drilling, receives great rigidity.
REFERENCES:
patent: 1166153 (1915-12-01), Ridley et al.
patent: 4016944 (1977-04-01), Wohfeld
patent: 4286677 (1981-09-01), Guex
Hausmann August
Klaissle Siegried
Moser Bernhard
Peetz Wolfgang
Bui Thuy M.
Hawera Probst GmbH and Co.
Novosad Stephen J.
LandOfFree
Drilling bit does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Drilling bit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Drilling bit will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1079957