Apparatus for manufacturing spiral fluorescent tube
US5824130A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 31, 1997 |
| Grant date | Oct 20, 1998 |
| Priority date | — |
| Expiry date | Jul 31, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S65/09
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A device for manufacturing a spiral fluorescent tube is disclosed. The device includes a rod aerially supported in a first predetermined direction; a first clamp supporting a straight fluorescent tube in a second direction which is at right angles to the first predetermined direction; heating device for heating a part of the straight fluorescent tube, which is not facing the rod, to a glass softening temperature; two second clamps disposed in a direction parallel to the rod for clamping ends of the straight fluorescent tube; and device for winding the straight fluorescent tube around the rod by rotating the two second clamps in opposite directions to each other around an axis of the rod while shifting the two second clamps away from each other in a direction parallel to the first predetermined direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.