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US 2015/0315902 A1Published application
Rotation Activated Downhole Orientation System and Method
Assignee2iC Australia Pty Ltd
InventorsAndrew Beach, Ben Blakeway
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Assignee2iC Australia Pty Ltd
InventorsAndrew Beach, Ben Blakeway
Estimating the term…
A rotation activated orientation system 10 for a ground drill is operated by action of magnetic fields. The system 10 incorporates a magnetically operated orientator 12 having a free state where the orientator 12 provides a substantially instantaneous indication of a position of a reference bearing of a hole being drilled by the ground drill, and a locked state where the orientator maintains the indication. The system 12 also includes a magnetic actuator 14 operatively associated with the magnetically operated orientator 12. When the rotational speed of the ground drill is greater than a threshold speed the magnetic actuator 14 supplies a magnetic field effective to place the orientator 12 in the free state. When the rotational speed of the drill is less than the threshold speed the magnetic actuator 14 does not supply a magnetic field effective to operate the orientator so that the orientator 12 reverts to or remains in the locked state.
A rotation activated orientation system for a ground drill comprising:
(canceled)
(canceled)
An orientation device comprising at least one orientation element and an associated closed loop race having a central axis in which the orientation element is confined, the race comprising first and second clamp members between which the orientation element is located the first and second clamp members being movable relative to each other between a free position where the clamp members are spaced sufficiently to enable the orientation element to roll about the axis within the closed loop race, and a locked position where the clamping members are moved toward each other to contact the orientation element, and wherein at least one of the clamping members is resiliently deformable wherein when the orientator is in the locked state, the resiliently deformable clamping members deforms about the orientation element.
Dependencies are inferred from the claim text.