Installation, device, and method for shaping the mouth of a hollow-body-shaped precursor from glass
US12421154B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Mar 3, 2021 |
| Grant date | Sep 23, 2025 |
| Priority date | — |
| Expiry date | Dec 7, 2041 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03B23/092
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method for shaping the mouth of a hollow precursor made of glass is provided, as well as glass produced thereby. The method includes heating the mouth of the hollow precursor; introducing a mandrel along a first direction into the mouth while the hollow precursor is rotating; and pressing shaping rollers along a second direction on an outside of the mouth while the hollow precursor is rotating with the mandrel in the mouth. The first and second directions are perpendicular to one another. The method can include moving the mandrel along second and/or third directions together or separate from expanding the mandrel along the second and third directions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.