High pressure product swivel
US4647077A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 17, 1984 |
| Grant date | Mar 3, 1987 |
| Priority date | — |
| Expiry date | Dec 17, 2004 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L39/06
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A rotatable swivel comprising a swivel body, a ball bearing assembly, and a primary upper seal axially offset from a primary lower seal for sealing a conduit chamber is disclosed. Pressurization of the conduit chamber of the swivel in cooperation with the differential axial offset of the primary seals creates axial pre-loading of the swivel operably aiding in the sealing of the conduit chamber and maintaining the concentricity of the bearing assembly between a rotatable outer ring and a stationary inner ring and providing wear compensation for the swivel. Secondary upper and lower seals are disclosed whereby if the primary seals fail to retain pressure in the conduit chamber, the respective secondary seal maintains the initial axial loading of the failed primary seal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.