Wellbore valve having linear magnetically geared valve actuator
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United States of America Patent
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-
Feb 10, 2009
Grant Date -
Dec 20, 2007
app pub date -
Jun 14, 2007
filing date -
Jun 20, 2006
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A wellbore valve includes a valve operator arranged to move axially along an interior of the wellbore, the valve operator arranged to operate a valve. A valve actuator is disposed proximate the valve operator. The valve actuator is arranged to move from one longitudinal position to another. A linear magnetic gear is coupled at an input element thereof to the valve actuator. The gear is coupled at an output element thereof to the valve operator such that motion of the valve actuator is transferred to the valve operator.
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