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Tubular handling apparatus

  • US 4,426,182 A
  • Filed: 09/10/1981
  • Issued: 01/17/1984
  • Est. Priority Date: 09/10/1980
  • Status: Expired due to Term
First Claim
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1. An apparatus for transferring tubulars between the floor of a drilling rig and a pipe rack comprising,an elongated main support frame adapted to be positioned in proximity to said pipe rack,a lift trough positioned longitudinally of said support frame and having one end pivotally coupled to said main support frame, whereby said lift trough can be pivoted upwardly to an inclined position,a power means connected to said lift trough for pivoting said lift trough upwardly to an inclined position relative to said main support frame and toward said drilling rig and downwardly to a generally horizontal position,a carriage means operatively connected to said lift trough for moving tubulars positioned in said lift trough along its length,a driving means for driving said carriage means along said lift trough,said driving means including an endless chain means drivingly connected to said carriage means, an endless drive chain associated with said endless chain means, an endless drive chain driving means operatively connected to said endless drive chain means for driving said endless drive chain, and a transmitting means for transmitting drive from said endless drive chain to said endless chain means,said lift trough including a tiltable dump trough,a tilting means for tilting said dump trough laterally relative to said main support frame, anda releasable connecting means for connecting said carriage means to said driving means when said dump trough is in an untilted position relative to said lift trough, said releasable connecting means being in a disconnected position when said dump trough is in a tilted position.

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