US3281227A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of bending glass sheets
Assignee: Libbey Owens Ford Glass Co
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Filing: 1966-02-14
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Granted: 1966-10-25
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Expires: 1986-02-14
Abstract
No abstract record available.
Inventors
- 👤 Jr Herbert A Leflet
- 👤 David M Wampler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:38
CPC Classifications
C; C03; C03B; C03B23/00; C03B23/02; C03B23/023; C03B23/025; C03B23/0258
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
A METHOD OF BENDING GLASS SHEETS TO RELATIVELY SHARP ANGLES, COMPRISING FORMING A GROOVE IN A SURFACE OF A SURFACE OF A FLAT SHEET OF GLASS TO BE BENT, WHICH GROOVE EXTENDS ALONG A SUBSTANTIALLY STRAIGHT LINE ACROSS THE SHEET AND TERMINATES INWARDLY OF THE OPPOSITE MARGINAL EDGES THEREOF, SUPPORTING THE FLAT SHEET OF GLASS HORIZONTALLY ON A BENDING MOLD, HEATING SAID SHEET TO BENDING TEMPERATURE TO CAUSE THE SHEET TO SAG UNDER THE INFLUENCE OF GRAVITY ALONG SAID GROOVE INTO CONFORMITY WITH SHAPING SURFACES ON SAID MOLD.
Claim 2
Independent Claim
88 words
A METHOD OF BENDING GLASS SHEETS TO RELATIVELY SHARP ANGLES, COMPRISING FORMING A GROOVE IN A SURFACE OF A SURFACE OF A FLAT SHEET OF GLASS TO BE BENT, WHICH GROOVE EXTENDS ALONG A SUBSTANTIALLY STRAIGHT LINE ACROSS THE SHEET AND TERMINATES INWARDLY OF THE OPPOSITE MARGINAL EDGES THEREOF, SUPPORTING THE FLAT SHEET OF GLASS HORIZONTALLY ON A BENDING MOLD, HEATING SAID SHEET TO BENDING TEMPERATURE TO CAUSE THE SHEET TO SAG UNDER THE INFLUENCE OF GRAVITY ALONG SAID GROOVE INTO CONFORMITY WITH SHAPING SURFACES ON SAID MOLD.
References Cited (Backward Citations)
AT155077B
Cited
US3241936A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-24 | 1970-04-25 | 1970-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-24 | 1974-04-25 | 1974-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-24 | 1978-04-25 | 1978-10-25 | $7700.00 | Window Closed / Lapsed |