Swivel apparatus
Patent
·
OSTI ID:6569720
Swivel apparatus is described that is 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.
- Assignee:
- Brown Oil Tools, Inc.
- Patent Number(s):
- US 4226447
- OSTI ID:
- 6569720
- Country of Publication:
- United States
- Language:
- English
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