Glass-ceramics suitable for ring laser gyros
US4707458A · kind A · utility
12Cited by
1References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 3, 1985 |
| Grant date | Nov 17, 1987 |
| Priority date | — |
| Expiry date | Jun 3, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S501/904
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
This invention relates to the production of transparent glass-ceramic bodies exhibiting properties especially suitable for use in ring laser gyros. The inventive products contain .beta.-quartz solid solution as essentially the sole crystal phase and consist essentially, expressed in terms of weight percent on the oxide basis, of ______________________________________ SiO.sub.2 64-67 ZnO 0.7-4.2 Al.sub.2 O.sub.3 21-24 TiO.sub.2 2.0-3.25 Li.sub.2 O 2.6-3.7 ZrO.sub.2 1.25-2.5 MgO 0.8-1.5 TiO.sub.2 + ZrO.sub.2 4-5.25 ______________________________________
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.