Method of supplying fluid to a rotating tube
US4347069A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 11, 1981 |
| Grant date | Aug 31, 1982 |
| Priority date | — |
| Expiry date | Mar 11, 2001 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L27/0816
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method of introducing a vapor stream into a rotating optical fiber preform tube comprising the steps of: (a) generating a vapor stream comprised of a vaporized glass forming precursor entrained in an oxidizing carrier gas; (b) flowing the vapor stream into the rotating optical fiber preform tube through a sealed rotary joint; and (c) preventing any material alteration in the composition of the vapor stream from occurring should the sealed rotary joint become leaky by flowing a stream of fluid consisting essentially of the oxidizing carrier gas over the rotary joint at a pressure greater than the pressure of the vapor stream as it flows through the rotary joint.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.