US3174839A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for heat treatment of glass
Assignee: Glaces de Boussois SA
•
Filing: 1961-07-12
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Granted: 1965-03-23
•
Expires: 1981-07-12
Abstract
No abstract record available.
Inventors
- 👤 Long Bernard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:20
CPC Classifications
C; C03; C03B; C03B35/00; C03B35/14; C03B35/20; C03B35/202; C03B35/205; C03B27/00; C03B27/016
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
202 words
THE METHOD OF UNIFORMLY HEAT TREATING FLAT GLASS SHEETS WHICH COMPRISES: HEATING A FLAT GLASS SHEET TO A PREDETERMINED DEGREE OF SOFTNESS; SUPPORTING THE HEATED GLASS SHEET IN A SUBSTANTIALLY VERTICAL POSITION BETWEEN A PAIR OF HEAT ABSORBING COOLING PLATES EACH HAVING A SINGLE SURFACE FACING THE GLASS SHEET WHICH IS FLAT THROUGHOUT THE ENTIRE AREA THEREOF WHICH IS COEXTENSIVE WITH THE GLASS SHEET; PROVIDING A PLURALITY OF SPACING ELEMENTS EACH HAVING A THICKNESS NOT GREATER THAN 1.00 MM. BETWEEN THE GLASS SHEET AND EACH OF THE COOLING PLATES; SIMULTANEOUSLY MOVING EACH OF THE COOLING PLATES TOWARD THE GLASS SHEET UNTIL THE SPACING ELEMENTS ARE CLAMPED BETWEEN THE GLASS SHEET AND SAID FLAT SURFACES ON THE COOLING PLATES, THE SPACING ELEMENTS BEING OF SUFFICIENT NUMBER AND SO POSITIONED THAT WHEN SO CLAMPED EVERY POINT ON EACH OF SAID FLAT SURFACES IS SPACED FROM THE GLASS SHEET AN EQUAL DISTANCE NOT GREATER THAN 1.00 MM., AND YET FEW ENOUGH IN NUMBER THAT THE SPACING ELEMENTS THEMSELVES DO NOT CONTRIBUTE MATERIALLY TO THE COOLING ACTION OF THE COOLING PLATES; MAINTAINING THE COOLING PLATES IN SAID POSITION TO COOL AND THEREBY UNIFORMLY TEMPER THE GLASS SHEET; AND THEREAFTER WITHDRAWING THE COOLING PLATES FROM SAID POSITION.
Claim 2
Independent Claim
202 words
THE METHOD OF UNIFORMLY HEAT TREATING FLAT GLASS SHEETS WHICH COMPRISES: HEATING A FLAT GLASS SHEET TO A PREDETERMINED DEGREE OF SOFTNESS; SUPPORTING THE HEATED GLASS SHEET IN A SUBSTANTIALLY VERTICAL POSITION BETWEEN A PAIR OF HEAT ABSORBING COOLING PLATES EACH HAVING A SINGLE SURFACE FACING THE GLASS SHEET WHICH IS FLAT THROUGHOUT THE ENTIRE AREA THEREOF WHICH IS COEXTENSIVE WITH THE GLASS SHEET; PROVIDING A PLURALITY OF SPACING ELEMENTS EACH HAVING A THICKNESS NOT GREATER THAN 1.00 MM. BETWEEN THE GLASS SHEET AND EACH OF THE COOLING PLATES; SIMULTANEOUSLY MOVING EACH OF THE COOLING PLATES TOWARD THE GLASS SHEET UNTIL THE SPACING ELEMENTS ARE CLAMPED BETWEEN THE GLASS SHEET AND SAID FLAT SURFACES ON THE COOLING PLATES, THE SPACING ELEMENTS BEING OF SUFFICIENT NUMBER AND SO POSITIONED THAT WHEN SO CLAMPED EVERY POINT ON EACH OF SAID FLAT SURFACES IS SPACED FROM THE GLASS SHEET AN EQUAL DISTANCE NOT GREATER THAN 1.00 MM., AND YET FEW ENOUGH IN NUMBER THAT THE SPACING ELEMENTS THEMSELVES DO NOT CONTRIBUTE MATERIALLY TO THE COOLING ACTION OF THE COOLING PLATES; MAINTAINING THE COOLING PLATES IN SAID POSITION TO COOL AND THEREBY UNIFORMLY TEMPER THE GLASS SHEET; AND THEREAFTER WITHDRAWING THE COOLING PLATES FROM SAID POSITION.
Claim 3
Dependent Claim
161 words
APPARATUS FOR UNIFORMLY TEMPERING HEATED FLAT GLASS SHEETS, COMPRISING: MEANS FOR SUPPORTING A HEATED FLAT GLASS SHEET IN A SUBSTANTIALLY VERTICAL POSITION WITH THE OPPOSITE FACES THEREOF COMPLETELY EXPOSED AND FREE FROM OBSTRUCTIONS; A HEAT ABSORBING COOLING PLATE DISPOSED ON EACH SIDE OF THE GLASS SHEET, EACH OF SAID COOLING PLATES HAVING A SINGLE SURFACE FACING THE GLASS SHEET, SAID SURFACE BEING FLAT THROUGHOUT THE ENTIRE AREA THEREOF WHICH IS COEXTENSIVE WITH THE GLASS SHEET; A PLURALITY OF SPACING WIRES DISPOSED BETWEEN THE GLASS SHEET AND EACH OF SAID SURFACES, EACH OF SAID SPACING WIRES HAVING A DIAMETER NOT GREATER THAN 1.00 MM.; AND MEANS FOR SIMULTANEOUSLY MOVING EACH OF SAID COOLING PLATES TOWARD THE GLASS SHEET TO CLAMP SAID SPACING WIRES BETWEEN SAID SURFACES AND THE GLASS SHEET, SAID SPACING WIRES BEING POSITIONED SO THAT WHEN SO CLAMPED EVERY POINT ON EACH OF SAID FLAT SURFACES IS SPACED FROM THE GLASS SHEET AN EQUAL DISTANCE NOT GREATER THAN 1.00 MM.
Claim 4
Dependent Claim
161 words
APPARATUS FOR UNIFORMLY TEMPERING HEATED FLAT GLASS SHEETS, COMPRISING: MEANS FOR SUPPORTING A HEATED FLAT GLASS SHEET IN A SUBSTANTIALLY VERTICAL POSITION WITH THE OPPOSITE FACES THEREOF COMPLETELY EXPOSED AND FREE FROM OBSTRUCTIONS; A HEAT ABSORBING COOLING PLATE DISPOSED ON EACH SIDE OF THE GLASS SHEET, EACH OF SAID COOLING PLATES HAVING A SINGLE SURFACE FACING THE GLASS SHEET, SAID SURFACE BEING FLAT THROUGHOUT THE ENTIRE AREA THEREOF WHICH IS COEXTENSIVE WITH THE GLASS SHEET; A PLURALITY OF SPACING WIRES DISPOSED BETWEEN THE GLASS SHEET AND EACH OF SAID SURFACES, EACH OF SAID SPACING WIRES HAVING A DIAMETER NOT GREATER THAN 1.00 MM.; AND MEANS FOR SIMULTANEOUSLY MOVING EACH OF SAID COOLING PLATES TOWARD THE GLASS SHEET TO CLAMP SAID SPACING WIRES BETWEEN SAID SURFACES AND THE GLASS SHEET, SAID SPACING WIRES BEING POSITIONED SO THAT WHEN SO CLAMPED EVERY POINT ON EACH OF SAID FLAT SURFACES IS SPACED FROM THE GLASS SHEET AN EQUAL DISTANCE NOT GREATER THAN 1.00 MM.
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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) | 1968-03-22 | 1968-09-21 | 1969-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-22 | 1972-09-21 | 1973-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-22 | 1976-09-21 | 1977-03-23 | $7700.00 | Window Closed / Lapsed |