US3245772A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of heat treating glass sheets while being conveyed
Assignee: PPG Industries Inc
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Filing: 1965-05-24
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Granted: 1966-04-12
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Expires: 1985-05-24
Abstract
No abstract record available.
Inventors
- 👤 James H Cypher
- 👤 Jr Charles R Davidson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:44
CPC Classifications
C; C03; C03B; C03B27/00; C03B27/04; C03B27/0417; B; B65; B65G; B65G49/00; B65G49/05; B65G49/06; B65G49/063; B65G49/064; B65G49/065; C03B23/00; C03B23/02; C03B23/023; C03B23/035; C03B27/044
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
107 words
IN THE ART OF HEAT TREATING A SUBSTANTIALLY HORIZONTALLY DISPOSED GLASS SHEET WHILE BEING CONVEYED IN A SUBSTANTIALLY HORIZONTAL DIRECTION IN DIRECT SEQUENTIAL CONTACT WITH SUCCESSIVE CONVEYOR ELEMENTS SPACED LONGITUDINALLY OF AND EXTENDING TRANSVERSELY OF THE PATH OF GLASS MOVEMENT, THE IMPROVEMENT WHICH COMPRISES DIFFERENTIALLY HEATING THE TOP AND BOTTOM SURFACES OF THE SHEET TO BOW THE GLASS INTO A CONVEX ELEVATIONAL CONFIGURATION TRANSVERSELY OF THE PATH OF MOVEMENT WHILE CONVEYING THE BOWED GLASS SHEET ALONG SAID CONVEYING ELEMENTS AND WHILE IT IS SUPPORTED ALONG SIDE EDGES THEREOF BY SAID CONVEYOR ELEMENTS AND WHILE THE CENTRAL AREA OF THE GLASS IS OUT OF ENGAGEMENT WITH SAID ELEMENTS.
Claim 2
Dependent Claim
107 words
IN THE ART OF HEAT TREATING A SUBSTANTIALLY HORIZONTALLY DISPOSED GLASS SHEET WHILE BEING CONVEYED IN A SUBSTANTIALLY HORIZONTAL DIRECTION IN DIRECT SEQUENTIAL CONTACT WITH SUCCESSIVE CONVEYOR ELEMENTS SPACED LONGITUDINALLY OF AND EXTENDING TRANSVERSELY OF THE PATH OF GLASS MOVEMENT, THE IMPROVEMENT WHICH COMPRISES DIFFERENTIALLY HEATING THE TOP AND BOTTOM SURFACES OF THE SHEET TO BOW THE GLASS INTO A CONVEX ELEVATIONAL CONFIGURATION TRANSVERSELY OF THE PATH OF MOVEMENT WHILE CONVEYING THE BOWED GLASS SHEET ALONG SAID CONVEYING ELEMENTS AND WHILE IT IS SUPPORTED ALONG SIDE EDGES THEREOF BY SAID CONVEYOR ELEMENTS AND WHILE THE CENTRAL AREA OF THE GLASS IS OUT OF ENGAGEMENT WITH SAID ELEMENTS.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-04-11 | 1969-10-11 | 1970-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-11 | 1973-10-11 | 1974-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-11 | 1977-10-11 | 1978-04-12 | $7700.00 | Window Closed / Lapsed |