E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
270/2, 255/14.4
E21B 19/14 (2006.01) E21B 19/00 (2006.01) E21B 19/15 (2006.01) E21B 19/22 (2006.01)
Patent
CA 1161427
ABSTRACT OF THE DISCLOSURE An apparatus for transferring tubulars between the floor of a drilling rig and a pipe rack includes an elongated main support frame adapted to be positioned in proximity to the pipe rack, a lift trough positioned longitudinally of the support frame and having one end pivotally coupled to the main support frame, whereby the lift trough can be pivoted upwardly to an inclined position, a power member connected to the lift trough for pivoting the lift trough upwardly to an inclined position relative to the main support frame and toward the drilling rig and downwardly to a generally horizontal position, and a carriage including a movable holding tray operatively connected to the lift trough for moving tubulars positioned in the lift trough along its length. An adjustable fixed trough supported on a drilling rig floor slopes towards the lift trough and is connectable with it when it is in the inclined position for transferring tubulars to the rig floor. The lift trough has a dump trough section for dumping tubulars toward the racks. Pivotal arms have a tiltable holding tray connected between them for transferring tubulars to and from the pipe racks and the dump trough. A wheel and track assembly is provided for moving the entire apparatus to different locations on an offshore platform.
386876
Cain Troy D.
Frias Robert
Hirons & Rogers
Ingram Corporation
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