Flex joint incorporating enclosed conductors
US4842059A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 16, 1988 |
| Grant date | Jun 27, 1989 |
| Priority date | — |
| Expiry date | Sep 16, 2008 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L27/0853
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A flex joint for an elongate oil tool which permits flexure and bending while yet protecting electrical conductors is disclosed. The duplicated flex joint incorporates a hollow knuckle having a passage therethrough received in a mating and confining socket terminating in a passage. The knuckle and socket form a flex joint. The flex joint is pinned so that rotation in a conic angle is permitted while rotation of the two components relative to one another is forbidden. The passage is periodically closed by means of a transverse plug, an electrical feedthrough permitting electrical conductors to extend through said plug. The passage is further protected from the intrusion of fluids from the well borehole by means of a spring loaded piston compensating pressurized sealed oil system which operates in an annular space on the exterior of the passage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.