Tubing blowout preventer
Patent
·
OSTI ID:5492900
In one form of a blowout preventer, the ram assembly, for moving the seal assembly relative to the vertical bore, has an end plate slideable within the lateral bore and has a feed-screw housing also slidable within the lateral bore with an outer elongated threaded end extending freely through the end plate. The feed screw housing is positioned within the lateral bore intermediate the end plate and a back plate. A feed screw is attached rotatably to the back plate and extends through the feed-screw housing and its outer elongated end. A yoke element is dropped through an opening in the housing defining the lateral bore to lock the end plate in place so that by tightening a nut on the outer elongated threaded end of the feed-screw housing, the feed-screw housing and the end plate are drawn together to compress a packing into sealing engagement with the lateral bore. (8 claims)
- Assignee:
- Dresser Industries Inc.
- Patent Number(s):
- US 3399901
- OSTI ID:
- 5492900
- Country of Publication:
- United States
- Language:
- English
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