Method for producing glass tubing of a narrowed diameter
US4828599A · kind A · utility
2Cited by
5References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 8, 1988 |
| Grant date | May 9, 1989 |
| Priority date | — |
| Expiry date | Aug 8, 2008 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03B23/045
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The method of the present invention consists of the steps of heating an area along the length of a small diameter glass tube while the tube is being rotated, pulling the heated tube using an unidirectional force to rapidly extend the heated area while mechanically maintaining the heat source centrally located along the portion of the tubing being extended. The extended tubing is subsequently cooled and separated at the narrowed portion to produce two capillary tubes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.