Steerable system
AssigneeSchlumberger Technology Corporation
InventorMichael Shepherd
Life of this patent
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Abstract
A steerable system comprises a first rotatable housing and a second rotatable housing connected to the first rotatable housing by an adjustable joint. A cam member is held against rotation while in use. Cam follower means are cooperable with the cam member and moveable to drive the second rotatable housing for movement relative to the first rotatable housing about the adjustable joint.
Claims21
A steerable system comprising a first rotatable housing, a second rotatable housing connected to the first rotatable housing by an adjustable joint, a cam member held against rotation, in use, and a cam follower cooperable with the cam member, the cam follower comprising follower pistons which are reciprocable in corresponding bores, the follower pistons causing movement of associated drive members in a manner which provides mechanical advantage enabling the associated drive members to apply a larger force, the associated drive members being moveable to drive the second rotatable housing for movement relative to the first rotatable housing about the adjustable joint.
Dependencies are inferred from the claim text.