Pipe joints or couplings – Essential catch – With manipulator
Patent
1976-01-09
1980-10-07
Staab, Lawrence J.
Pipe joints or couplings
Essential catch
With manipulator
173 57, 285 18, F16L 3718, B25D 1714
Patent
active
042264472
ABSTRACT:
Swivel apparatus suspended for handling pipe joints to be added to or taken from a drill string including powered apparatus connected to a cable for raising and lowering the swivel apparatus. The swivel apparatus may comprise an upper stationary section and a lower rotatable tubular section adapted to receive one end of a pipe joint and having a radially movable latch assembly for engagement therewith. The lower section may be provided with cam apparatus movable, relative to the latch assembly, from an inoperative position to an operative position camming the latch assembly from a first position, permitting free entry of the pipe joint end into the lower section, to a second, latching the pipe joint end in the lower section.
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Brown Oil Tools, Inc.
Staab Lawrence J.
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