Roller link toggle gripper and downhole tractor
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United States of America Patent
Stats
-
Oct 27, 2009
Grant Date -
Jan 8, 2009
app pub date -
Jun 30, 2008
filing date -
Mar 17, 2004
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An expandable gripper assembly may be configured for anchoring a tool in a passage. The expandable gripper assembly includes first, second, and third pivotally connected links that are coupled to a tool. The third link is adapted to engage an inner wall in the passage. An actuation mechanism causes the third link to move radially outward from the tool for engagement with the inner wall. The actuation mechanism may comprise a roller mechanism that pushes on an inner surface of the first link for causing the first link to pivot outward away from the body. As the first and second links pivot outward, the third link moves in a radial direction for engagement with an inner wall.
First Claim
Family
International Classification(s)
Cited Art Landscape
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