High pressure rotary coupling
US4462617A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 31, 1981 |
| Grant date | Jul 31, 1984 |
| Priority date | — |
| Expiry date | Aug 31, 2001 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L27/0824
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
The present invention in a rotary coupling or swivel is arranged for maintaining together, respectively, stationary and rotating pipes wherethrough a fluid under pressure is passed and involves an outer stationary body with an inner body journaled therein. The two bodies are held together by positioning a number of hardened balls within complimentary grooves formed, respectively, around the stationary body inner circumference and around the inner body outer circumference, the aligned grooves forming a track or race wherein the hardened balls roll freely. The hardened balls are dropped into the grooves through a port formed through the stationary body, holding the bodies together and functioning as a roller bearing to carry high thrust loads beyond the pressure loading. The coupling additionally includes a dual packing seal arrangement that, when installed between the stationary and rotating bodies will act as a barrier to fluid flow into the coupling and includes a visual flow indicator associated therewith that will indicate to an operator the failure of a primary seal. The dual packing seal arrangement is arranged to be easily installed without a necessity of fully separating the…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.