Pipe elevator with rotating door
AssigneeNational-Oilwell, L.P.
InventorLopek Drzewiecki
Life of this patent
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Abstract
An elevator comprising a body having a longitudinal axis therethrough. The body is operable to at least partially surround and support a tubular member aligned with the longitudinal axis. The body also has a longitudinal opening that is sized so as to allow the tubular member to pass therethrough. A door is rotatable about the longitudinal axis of the body and has a closed position wherein the tubular member is retained within the body and an opened position wherein the tubular member can pass through the longitudinal opening.
Claims20
An elevator comprising
- a body having a longitudinal axis therethrough, wherein said body is operable to at least partially surround and support a tubular member aligned with the longitudinal axis;
- a longitudinal opening through said body, wherein said opening is sized so as to allow the tubular member to pass therethrough;
- and
- a door rotatable about the longitudinal axis of the body, wherein said door has a closed position wherein the tubular member is retained within said body and an opened position wherein the tubular member can pass through the longitudinal opening.
A pipe elevator comprising:
- a body having a longitudinal axis therethrough;
- a top ring disposed within said body;
- a bottom ring disposed within said body, wherein said top ring and bottom ring each have openings that are aligned with an opening through said body;
- a door disposed between said top ring and said bottom ring, wherein said door is rotatable about the longitudinal axis of the body between a closed position, wherein said door prevents a pipe member from moving through the opening through said body, and an opened position, wherein said door allows the pipe member to pass through the opening through said body.
A method for lifting a tubular member comprising:
- inserting a tubular member through an opening into an elevator so as to align a central axis of the tubular member with the longitudinal axis of the elevator;
- and
- rotating a door of the elevator about the longitudinal axis of the elevator to a closed position that prevents the tubular member from moving through the opening into the elevator.
Dependencies are inferred from the claim text.