Patent ID: 8739863

Claim:
A rotating control device, comprising: a housing assembly which contains a bearing assembly and at least one annular seal which rotates and seals off an annulus between a tubular string and a body of the rotating control device; and a remotely operable clamp device which selectively permits and prevents displacement of the housing assembly relative to the body, the clamp device comprising: first and second clamp sections which prevent displacement of the housing assembly relative to the body when the clamp device is clamped and which permit displacement of the housing assembly relative to the body when the clamp device is unclamped; first and second threaded members, the first threaded member threadedly engaging corresponding threads in the first and second clamp sections on a first side of the clamp device, and the second threaded member threadedly engaging corresponding threads in the first and second clamp sections on a second side of the clamp device opposite the first side; and at least one motor, wherein simultaneous rotation of the first and second threaded members by the at least one motor causes linear displacement of the clamp sections in opposite directions, thereby selectively permitting and preventing displacement of the housing assembly relative to the body, wherein the curved clamp sections substantially jointly form a circle when the clamp device is clamped.