Method for shaping,tempering and laminating glass sheets
Abstract
Abstract A METHOD FOR MAKING A TEMPERED LAMINATED WINDOW WHEREIN A FIRST SHEET OF GLASS IS SUPPORTED ON FLUID AND HEATED TO A TEMPERATURE SUFFICIENT FOR DEFORMING AND TEMPERING AND THEREAFTER LIFTED WITH AN ENDLESS RING FRAME TO FORCE THE SHEET INTO ENGAGEMENT WITH A SHAPED SURFACE. THE SHEET OF GLASS IS THEN TEMPERED OR COOLED WHILE SUPPORTED ON THE FRAME. A SECOND SHEET IS SHAPED WITH THE EXACT SAME FRAME SO THAT IT HAS THE SAME SHAPE AS THE FIRST SHEET. THE TWO TEMPERED SHEETS OF GLASS ARE THEN LAMINATED. THE LAMINATING OF THE TWO T EMPERED SHEETS OF GLASS IS POSSIBLE BECAUSE THEY ARE BOTH SUPPORTED AND SHAPED BY THE SAME SHAPING FRAME AND ARE COOLED TO RIGIDITY BEFORE BEING REMOVED FROM THE SHAPING FRAME SO THAT THEY ARE SUBSTANTIALLY EXACT DUPLICATES.
Inventors
- 👤 Harold A Mcmaster
- 👤 Norman C Nitschke
- 👤 John J Kawecka
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-04-05 | 1974-10-05 | 1975-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-05 | 1978-10-05 | 1979-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-05 | 1982-10-05 | 1983-04-06 | $7700.00 | Window Closed / Lapsed |