Wellhead connector locking device
This patent describes an improvement in a connector for connecting a conduit to a tubular member. The connector having a housing which slides over the tubular member, a plurality of dogs carried by the housing for radial movement into engagement with a set of grooves formed on the exterior of the tubular member, an axially moveable cam ring movable between an unlocked and a locked position for moving the dogs radially inward, and piston means for moving the cam ring between the unlocked and locked positions. The improvement comprising: a wedge ring having an inner side that engages an outer side of each of the dogs when the cam ring is in the locked position, the wedge ring having an outer side that engages an inner side of the cam ring; the inner side of the cam ring and the outer sides of the dogs each inclining relative to a longitudinal axis of the tubular member, the inner side of the cam ring converging toward the outer sides of the dogs; and the inner and outer sides of the wedge ring inclining relative to the longitudinal axis of the tubular member and converging toward each other for wedging the cam ring in the locked position.
- Assignee:
- Vetco Gray, Inc., Houston, TX
- Patent Number(s):
- US 4856594
- Application Number:
- PPN: US 7237585A
- OSTI ID:
- 5283923
- Resource Relation:
- Patent File Date: 26 Aug 1988
- Country of Publication:
- United States
- Language:
- English
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