| 摘要 |
<p>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.</p> |
