E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 7/08 (2006.01) E21B 17/04 (2006.01)
Patent
CA 2688702
An adjustable bent housing includes a tubular member comprising a first engagement means, and an adjustment ring comprising a second engagement means. The first engagement means has a plurality of sockets in a first region of the annular end face of the tubular member, and a plurality of locking pins projecting from a second region of the end face of the tubular member. The second engagement means has a plurality of sockets in annular end face of the adjustment ring, configured to receive the locking pins. The second engagement means further comprises an indexing pin projecting from the end face of the adjustment ring, and receivable within any socket of the first engagement means when the locking pins are disposed within corresponding sockets of the second engagement means. The adjustment ring is longitudinally movable relative to the tubular member, to permit disengagement of the first and second engagement means and to permit relative rotational adjustment therebetween. The adjustment ring's longitudinal travel is restricted such that the locking pins act as stops for the indexing pin, thereby preventing over-rotation of the adjustment ring.
National Oilwell Varco L.p.
Tomkins Donald V.
LandOfFree
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