Method of cutting glass and article made thereby
Abstract
Abstract Pieces of glass are cut to desired size without the necessity of grinding to size and polishing. Edges of the piece are cut in accordance with a procedure involving the use of a blunt scoring wheel of larger-than-usual diameter and a greater-than-usual applied pressure, to produce a fissure 1.5 millimeters deep or more, followed by the application of a bending moment to sever the glass or of heat along the length of the score to cause the glass to become nearly severed. In the latter instance a thin glass layer remains that is easily severed. Light seaming of the tops and bottoms of the edges completes the preparation of those edges. In a further aspect, a curved deep fissure is produced by a blunt scoring wheel of larger-than-usual diameter under greater-than-usual pressure, in the same manner above. However, a top center tap is used to propagate a fracture, leaving only a thin glass layer which is then severed. Light seaming completes the preparation of the curved edge.
Inventors
- 👤 Torre R De
Bibliographic Details
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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) | 1977-03-04 | 1977-09-03 | 1978-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-04 | 1981-09-03 | 1982-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-04 | 1985-09-03 | 1986-03-05 | $7700.00 | Window Closed / Lapsed |