Rock drill

Details Rock drill Rock drill

E - Fixed Constructions

21

B

255/82

E21B 10/44 (2006.01) E21B 17/22 (2006.01)

Patent

CA 1166629

ABSTRACT OF THE DISCLOSURE A rock drill is formed of an axially elongated member made up of a cutting bit at one end followed by a helically grooved shaft and then ending in a shank. At least a portion of the groove, viewed in the axial direction of the member, has a stepped bottom providing groove sections of different depths. The depth of the groove sections from the surface of the shaft decreases in the direction toward the shank.

375317

Affiliated with

Also associated with

Rating

Rock drill does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Rock drill, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Rock drill will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-874087