Hydraulic collet-type connector
US4708376A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 27, 1987 |
| Grant date | Nov 24, 1987 |
| Priority date | — |
| Expiry date | Mar 27, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S285/92
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
The collet-type connector (10) comprising an upper body member (20) having a plurality of collet segments (52), a cam ring (64) movable relative to the upper body member (20) to move said collet segments (52) into a detachable connection of the connector to a subsea wellhead (14, 14a). The cam ring (64) and collet segments (52) have sets of camming surfaces whereby a first set (86, 92) cooperate to pivot the collet segments (52) initially toward the wellhead (14, 14a) and whereby a second set (96, 104) serves to urge the collet segments (52) further to clamp the connector (10) to the subsea wellhead (14, 14a). When the second set (96, 104) of camming surfaces function, the first set (86, 92) no longer function to rotate the collet segments, thus reducing the power requirement for urging the collet segments (52) into clamping engagement to only one set at a time, even though both sets together serve to aid in holding the collet segments in clamping engagement with the wellhead after final engagement. The connector is further characterized by the fact that, first, one set (86, 92) of camming surfaces serves to hold the collet segments (52) in a conical orientation to facilitate posit…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.