US PATENT SUBCLASS 414 / 22.52
.~ With slope change

Current as of: June, 1999
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414 /   HD   MATERIAL OR ARTICLE HANDLING

22.51  DF  WELL PIPE OR ROD RACKING MECHANISM {3}
22.52.~ With slope change {4}
22.53  DF  .~.~> For nonvertical drilling
22.54  DF  .~.~> Horizontal to/from vertical {3}
22.59  DF  .~.~> Guided skate or pusher
22.61  DF  .~.~> Pipe or rod guide

DEFINITION

Classification: 414/22.52

With slope change:

(under subclass 22.51) Apparatus wherein the inclination of the cylindrical member is intentionally changed during manipulation thereof.

(1) Note. Moving pipe from a horizontal rack on the ground is included herein if the inclination of the pipe is changed during transport.