Method for supplying fluid to a rotating tube
US4389231A · kind A · utility
6Cited by
1References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 1, 1981 |
| Grant date | Jun 21, 1983 |
| Priority date | — |
| Expiry date | Jun 1, 2001 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L27/0828
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A sealed rotary joint and method are described wherein a purge fluid is passed over a tube rotating within an end cap and through a ball bearing component of the joint. A vapor stream including a vaporized glass forming precursor entrained in an oxidizing carrier gas is passed into a rotating optical fiber preform tube through a housing supporting the ball bearing. A stream of the oxidizing carrier gas at a pressure greater than the pressure of the vapor stream can act as the purge fluid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.