Bending and tempering glass sheets
Abstract
Abstract A flat sheet of glass is heated to bending temperature during movement along a horizontal path and toward a ring type bending mold located beneath the path. When the heated sheet reaches a position directly over it, the mold is raised to lift the sheet bodily above the path and rapidly enough to cause it to sag and bend by inertia and gravity into contact with the shaping surface of the mold. The raised mold with the bent sheet thereon is then shifted laterally, first away from the path into an area where the sheet is rapidly chilled to temper it and then back into alignment with the path, after which the mold is lowered to return the bent and tempered sheet to the path for continued movement therealong.
Inventors
- 👤 George F Ritter Jr
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) | 1975-08-15 | 1976-02-14 | 1976-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-15 | 1980-02-14 | 1980-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-15 | 1984-02-14 | 1984-08-15 | $7700.00 | Window Closed / Lapsed |