E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 19/06 (2006.01)
Patent
CA 2616312
An oilfield elevator including a locking mechanism operable by axial movement of the elevator's first body segment relative to its second body segment to control pivotal rotation about a hinge between the body segments; and an actuation lever positioned between the first body segment and the second body segment, the actuation lever including a protrusion thereon and being moveable to drive the protrusion against the first body segment to drive the first body segment axially relative to the second body segment.
Bennett Jones Llp
Tesco Corporation
LandOfFree
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