Tapered furnace muffles
US11242278B2 · kind B2 · utility
0Cited by
3References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 11, 2019 |
| Grant date | Feb 8, 2022 |
| Priority date | — |
| Expiry date | Apr 9, 2040 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P40/57
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An optical fiber draw furnace muffle includes a body portion defining a substantially cylindrical cavity extending along a centerline axis of the muffle. A tapered portion has an interior surface which defines a first curved portion with a first radius of curvature and a second curved portion with a second radius of curvature. At least one of the first and second radii of curvature has a radius greater than a radius of the cylindrical cavity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.