Thread joint for a drill string for percussive rock-drilling

Pipe joints or couplings – Particular interface – Tapered

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

Reexamination Certificate

active

08066307

ABSTRACT:
In percussion rock drilling a screw joint for a drill run or drill string including male and female screw threads (5, 9) on the elements (1, 2) are joined together to form a drill string. Within the screw joint the male thread (5) and the female thread (9) have a trapezoidal shape and a slight conical inclination.

REFERENCES:
patent: 3129963 (1964-04-01), Robbins
patent: 3645570 (1972-02-01), Johansson et al.
patent: 3717368 (1973-02-01), Czarnecki et al.
patent: 4687368 (1987-08-01), Eklof et al.
patent: 5169183 (1992-12-01), Hallez
patent: H1329 (1994-07-01), Bailey et al.
patent: 6030004 (2000-02-01), Schock et al.
patent: 6196598 (2001-03-01), Yao
patent: 6293360 (2001-09-01), Liljebrand et al.
patent: 6681875 (2004-01-01), Larsson et al.
patent: 7455329 (2008-11-01), Muradov et al.
patent: 2002/0074797 (2002-06-01), Liljebrand et al.
patent: 0979922 (2000-02-01), None
patent: 517151 (2002-04-01), None
patent: 0138686 (2001-05-01), None
V.M. Vasilyev, Perforators, Drills Manual, Nedra Publishers, Moscow, 1989.
N.D. Scherbyuk et al., Threaded Joints of Pipes for Oil Purposes and Bottom-Hole Motors, Nedra Publishers, Moscow, 1974.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Thread joint for a drill string for percussive rock-drilling does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Thread joint for a drill string for percussive rock-drilling, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Thread joint for a drill string for percussive rock-drilling will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-4296177

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.