Laminated glazing
US8764923B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Sep 23, 2009 |
| Grant date | Jul 1, 2014 |
| Priority date | — |
| Expiry date | Oct 10, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2027/012
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A laminated vehicle glazing comprising a first ply of a glazing material and a second ply of a glazing material having a substantially co-extensive ply of an interlayer material laminated there between, at least a portion of the ply of interlayer material having a wedged cross-section, wherein the ply of interlayer material is pre-shaped by stretching such that either: (a) when the wedge angle is calculated at a plurality of points across the glazing, by taking measurements of a deflection of a laser beam as it passes through the glazing, the standard deviation in the magnitude of the wedge angle of the wedged portion is less than 0.05 mrad; or (b) when a grid pattern is projected onto the glazing, the standard deviation in the displacement between observed primary and secondary images of portions of the grid is less than 0.85 mm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.