Apparatus for tempering sheets of glass,in particular,sheets of curved form
Abstract
Abstract In particular the invention is concerned with the tempering of a sheet of glass moving continuously or intermittently in the direction of its length, and shaped to a selected radius of curvature in planes normal to that direction, by passing on a series of shaping rollers, having curved or arcuate central positions. After that shaping the ribbon passes directly to and between upper and lower series of curved rollers associated with nozzles from which cooling fluid is blown to impinge upon the two surfaces of the ribbon. Each two consecutive rollers, both upper and lower has arranged between them a set of transversely extending nozzle elements which are articulated together and so adjustable that the relation of each element to the continuous section of the rollers, remains essentially constant for all pivotal or rotational adjustments of the curved rollers.
Inventors
- 👤 J Cheron
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-03-25 | 1977-09-24 | 1978-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-25 | 1981-09-24 | 1982-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-25 | 1985-09-24 | 1986-03-26 | $7700.00 | Window Closed / Lapsed |