Lubricated glass mold
US6640587B1 · kind B1 · utility
9Cited by
11References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 29, 2000 |
| Grant date | Nov 4, 2003 |
| Priority date | — |
| Expiry date | Oct 14, 2021 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03B40/04
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A mold for shaping end portions of glass tubes has first and second mating members which define a contoured bore into which the heated tube fits. Each member has a longitudinal bore from which extend radial bores opening into the interior cavity of the mold containing the tube. Each member also has radial vent bores for venting gases and vapor to the outside. Each longitudinal bore is connected to a lubricant, such as water, supply, which is applied to the surface of the tube through the radial bores.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.