Title:
DRILL ROD GRIPPING APPARATUS
Document Type and Number:
WIPO Patent Application WO/2014/183933
Kind Code:
A3
Abstract:
Drill rod gripping apparatus (106) to grip and impart rotational motion to a drill rod (115). A sled (206) is axially mounted at a frame (205) and comprises first and second jaws (301, 302) moveably mounted at the sled to allow a substantially linear lateral movement across the sled to and from one another. A plurality of rod engagers (400, 401) are mounted at each jaw with at least one of the engagers comprising an abrasive surface (703) formed from a coating to increase the frictional force between the drill rod and the gripping apparatus.
Inventors:
JELGERT JOHAN (SE)
LARSSON LARS-ERIK (SE)
ERIKSSON KRISTER B (SE)
FREDIN OLA (SE)
LARSSON LARS-ERIK (SE)
ERIKSSON KRISTER B (SE)
FREDIN OLA (SE)
Application Number:
PCT/EP2014/057176
Publication Date:
June 04, 2015
Filing Date:
April 09, 2014
Export Citation:
Assignee:
SANDVIK INTELLECTUAL PROPERTY (SE)
International Classes:
E21B7/02; E21B19/15; E21B19/16; E21B19/20; E21B19/24
Domestic Patent References:
| WO2000065193A1 | 2000-11-02 | |||
| WO2012162617A2 | 2012-11-29 | |||
| WO2011129760A1 | 2011-10-20 |
Foreign References:
| US20110030512A1 | 2011-02-10 |
Attorney, Agent or Firm:
HAMMARSJÖ, Joakim (Sandviken, SE)
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