Back to results
US 2007/0166121 A1Published application
Self locking tensioner
AssigneeOceaneering International, Inc.
InventorsCharles Mynhier, Charles Tyrrell
Life of this patent
Estimating the term…
Abstract
The present invention is directed to a self locking tensioner that can be used to place a piston or stud in tension. The present invention is directed to a tensioner comprising slip wedges positioned between a piston and a body which houses the piston and the slip wedges.
Claims19
A tensioner comprising:
- (a) a body comprising a central channel comprising an upper cylindrical section and a lower conical section;
- (b) a piston member centrally located in said central channel comprising a longitudinal shaft and a top region comprising an upper lip;
- (c) a least two slip wedges extending into the conical section of the central channel adjacent to the piston;
- (d) a wedge piston mounted above the slip wedges in the central channel;
- and
- (e) a first fluid flowpath extending through the upper lip to a pressurization region of the upper cylindrical section above the wedge piston.
3 more elements
A hydraulic tensioner comprising:
- (a) a body comprising a central channel comprising an upper cylindrical section and a lower conical section;
- (b) a stud centrally located in said central channel comprising a longitudinal shaft and a top region;
- (c) a nut integral with the stud and located within the central channel;
- (d) at least two slip wedges extending into the conical section of the central channel;
- (e) a wedge piston mounted above the slip wedges in the central channel;
- and
- (f) a fluid flowpath extending through the stud to a pressurization region of the upper cylindrical section above the wedge piston.
4 more elements
Dependencies are inferred from the claim text.