US3265484A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for press bending and tempering glass sheets
Assignee: Libbey Owens Ford Glass Co
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Filing: 1962-12-03
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Granted: 1966-08-09
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Expires: 1982-12-03
Abstract
No abstract record available.
Inventors
- 👤 Jr George F Ritter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:42
CPC Classifications
C; C03; C03B; C03B27/00; C03B27/04; C03B27/044; C03B27/0442; C03B23/00; C03B23/02; C03B23/023; C03B23/03; C03B23/0302; C03B40/00; C03B40/005; C03B2225/00; C03B2225/02
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
10 words
IN A METHOD OF PRODUCING GLASS IN A CONTINUOUS TANK
Claim 2
Dependent Claim
10 words
IN A METHOD OF PRODUCING GLASS IN A CONTINUOUS TANK
Claim 3
Dependent Claim
146 words
IN APPARATUS FOR BENDING EACH OF A PLURALITY OF GLASS SHEETS MOVING SUCCESSIVELY ALONG A PREDETERMINED SUBFURNACE CONTAINING A BATH OF MOLTEN MATERIAL, THE STEPS OF, HEATING SAID BATH TO PRODUCE A TEMPERATURE GRADIENT IN STANTIALLY HORIZONTAL PATH, UPPER AND LOWER MOLD PARTS THE BATH WITH THE TEMPERATURE BEING GREATEST IN A SINGLE PROVIDED WITH COMPLEMENTAL SHAPING SURFACES, THE LOWER MOLD PART BEING MOVABLE VERTICALLY TOWARD AND AWAY REGION INTERMEDIATE THE ENDS OF THE TANK, SAID TEMPERATURE GRADIENT PRODUCING THERMAL CURRENTS CIRCULATING IN SAID FROM SAID UPPER MOLD PART, AN ENDLESS BELT CONVEYOR DISPOSED IN A LOOP ENCIRCLING SAID LOWER MOLD PART AND HAVBATH, AND ABSORBING HEAT FROM SAID BATH ADJACENT SAID REGION OF GREATEST TEMPERATURE TO ACCELERATE SAID THERMAL ING A HORIZONTAL RUN EXTENDING ALONG SAID PATH BETWEEN SAID UPPER AND LOWER MOLD PARTS FOR RECEIVING A SHEET TO CURRENTS PRODUCED BY SAID TEMPERATURE GRADIENT.
Claim 4
Dependent Claim
146 words
IN APPARATUS FOR BENDING EACH OF A PLURALITY OF GLASS SHEETS MOVING SUCCESSIVELY ALONG A PREDETERMINED SUBFURNACE CONTAINING A BATH OF MOLTEN MATERIAL, THE STEPS OF, HEATING SAID BATH TO PRODUCE A TEMPERATURE GRADIENT IN STANTIALLY HORIZONTAL PATH, UPPER AND LOWER MOLD PARTS THE BATH WITH THE TEMPERATURE BEING GREATEST IN A SINGLE PROVIDED WITH COMPLEMENTAL SHAPING SURFACES, THE LOWER MOLD PART BEING MOVABLE VERTICALLY TOWARD AND AWAY REGION INTERMEDIATE THE ENDS OF THE TANK, SAID TEMPERATURE GRADIENT PRODUCING THERMAL CURRENTS CIRCULATING IN SAID FROM SAID UPPER MOLD PART, AN ENDLESS BELT CONVEYOR DISPOSED IN A LOOP ENCIRCLING SAID LOWER MOLD PART AND HAVBATH, AND ABSORBING HEAT FROM SAID BATH ADJACENT SAID REGION OF GREATEST TEMPERATURE TO ACCELERATE SAID THERMAL ING A HORIZONTAL RUN EXTENDING ALONG SAID PATH BETWEEN SAID UPPER AND LOWER MOLD PARTS FOR RECEIVING A SHEET TO CURRENTS PRODUCED BY SAID TEMPERATURE GRADIENT.
Claim 5
Dependent Claim
152 words
IN A CONTINUOUS GLASS FURNACE HAVING A TANK CONBE BENT AND FOR POSITIONING IT BETWEEN SAID MOLD PARTS, MEANS DISPOSED AT OPPOSITE SIDES OF SAID UPPER AND LOWTAINING A BATH OF MOLTEN GLASS FLOWING FROM A CHARGING END THROUGH MELTING AND REFINING CHAMBERS TO AN OPPOER MOLD PARTS FOR SUPPORTING THE HORIZONTAL RUN OF SAID CONVEYOR, MEANS FOR DRIVING SAID CONVEYOR INTERMITTENTLY SITELY DISPOSED DISCHARGE END WITH BATCH MATERIAL BEING INTRODUCED INTO SAID CHARGING END TO FLOAT ON SAID BATH ENDWISE AROUND SAID LOOP, AND MEANS FOR RAISING SAID LOWER MOLD PART TOWARD SAID UPPER MOLD PART WHEN THE AND TO BE CARRIED THEREBY THROUGH SAID MELTING CHAMBER, HEATING MEANS DIRECTING HEAT INTO SAID FURNACE TO MELT SHEET IS SUPPORTED THEREBETWEEN TO EFFECT THE BENDING OF TH SHEET BETWEEN SAID MOLD PARTS. SAID BATCH MATERIAL AND TO PRODUCE THERMAL CURRENTS IN SAID BATH FLOWING ALONG THE UPPER SURFACE OF SAID BATH IN
Claim 6
Dependent Claim
152 words
IN A CONTINUOUS GLASS FURNACE HAVING A TANK CONBE BENT AND FOR POSITIONING IT BETWEEN SAID MOLD PARTS, MEANS DISPOSED AT OPPOSITE SIDES OF SAID UPPER AND LOWTAINING A BATH OF MOLTEN GLASS FLOWING FROM A CHARGING END THROUGH MELTING AND REFINING CHAMBERS TO AN OPPOER MOLD PARTS FOR SUPPORTING THE HORIZONTAL RUN OF SAID CONVEYOR, MEANS FOR DRIVING SAID CONVEYOR INTERMITTENTLY SITELY DISPOSED DISCHARGE END WITH BATCH MATERIAL BEING INTRODUCED INTO SAID CHARGING END TO FLOAT ON SAID BATH ENDWISE AROUND SAID LOOP, AND MEANS FOR RAISING SAID LOWER MOLD PART TOWARD SAID UPPER MOLD PART WHEN THE AND TO BE CARRIED THEREBY THROUGH SAID MELTING CHAMBER, HEATING MEANS DIRECTING HEAT INTO SAID FURNACE TO MELT SHEET IS SUPPORTED THEREBETWEEN TO EFFECT THE BENDING OF TH SHEET BETWEEN SAID MOLD PARTS. SAID BATCH MATERIAL AND TO PRODUCE THERMAL CURRENTS IN SAID BATH FLOWING ALONG THE UPPER SURFACE OF SAID BATH IN
Claim 7
Independent Claim
232 words
A METHOD OF BENDING AND TEMPERING GLASS SHEETS, COMPRISING SUPPORTING A GLASS SHEET IN A SUBSTANTIALLY SAID MELTING CHAMBER TOWARD THE CHARGING END OF SAID FURNACE AND BEING OPERABLE TO DISTRIBUTE HEAT EVENLY HORIZONTAL PLANE FOR MOVEMENT ALONG A PREDETERMINED PATH THROUGH A HEATING AREA, A BONDING AREA AND A CHILLTHROUGHOUT THE BATH AND TO SWEEP RELATIVELY SMALL UNMELTED PARTICLES OF SAID BATCH MATERIALS TOWARD SAID ING AREA, HEATING THE SHEET TO THE SOFTENING POINT OF THE GLASS DURING ITS PASSAGE THROUGH SAID HEATING AREA, ADCHARAGING END THEREBY TO PREVENT THEIR ENTRY INTO SAID REFINING CHAMBER, AND A PLURALITY OF BARRIER ELEMENTS DISVANCING SAID HEATED SHEET INTO SAID BENDING AREA, PRESSING THE HEATED SHEET IN SAID BENDING AREA BETWEEN COMPLEPOSED IN SAID BATH AND EXTENDING TRANSVERSELY ACROSS SAID TANK BETWEEN SAID MELTING AND REFINING CHAMBERS TO MEMENTAL SHAPING SURFACES TO BEND THE SHEET TO THE DESIRED CURVATURE, DIRECTING STREAMS OF COOLING FLUID AGAINST THE CHANICALLY PREVENT RELATIVELY LARGE LUMPS OF UNMELTED BATCH MATERIALS FROM ENTERING SAID REFINING CHAMBER WITHUPPER AND LOWER SURFACES OF THE BENT SHEET TO THE DESIRED TER IS SUPPORTED ON ONE OF SAID COMPLEMENTAL SHAPING OUT OBSTRUCTING THE FLOW OF SAID MOLTEN BATH. SURFACES UNTIL THE SHEET IS SET IN THE DESIRED CURVATURE, ADVACING SAID SHEET OUT OF SAID BENDING AREA AND INTO SAID CHILLING AREA, AND CHILLING SAID SHEET TO TEMPER THE SAME IN SAID CHILLING AREA. 5484
Claim 8
Independent Claim
232 words
A METHOD OF BENDING AND TEMPERING GLASS SHEETS, COMPRISING SUPPORTING A GLASS SHEET IN A SUBSTANTIALLY SAID MELTING CHAMBER TOWARD THE CHARGING END OF SAID FURNACE AND BEING OPERABLE TO DISTRIBUTE HEAT EVENLY HORIZONTAL PLANE FOR MOVEMENT ALONG A PREDETERMINED PATH THROUGH A HEATING AREA, A BONDING AREA AND A CHILLTHROUGHOUT THE BATH AND TO SWEEP RELATIVELY SMALL UNMELTED PARTICLES OF SAID BATCH MATERIALS TOWARD SAID ING AREA, HEATING THE SHEET TO THE SOFTENING POINT OF THE GLASS DURING ITS PASSAGE THROUGH SAID HEATING AREA, ADCHARAGING END THEREBY TO PREVENT THEIR ENTRY INTO SAID REFINING CHAMBER, AND A PLURALITY OF BARRIER ELEMENTS DISVANCING SAID HEATED SHEET INTO SAID BENDING AREA, PRESSING THE HEATED SHEET IN SAID BENDING AREA BETWEEN COMPLEPOSED IN SAID BATH AND EXTENDING TRANSVERSELY ACROSS SAID TANK BETWEEN SAID MELTING AND REFINING CHAMBERS TO MEMENTAL SHAPING SURFACES TO BEND THE SHEET TO THE DESIRED CURVATURE, DIRECTING STREAMS OF COOLING FLUID AGAINST THE CHANICALLY PREVENT RELATIVELY LARGE LUMPS OF UNMELTED BATCH MATERIALS FROM ENTERING SAID REFINING CHAMBER WITHUPPER AND LOWER SURFACES OF THE BENT SHEET TO THE DESIRED TER IS SUPPORTED ON ONE OF SAID COMPLEMENTAL SHAPING OUT OBSTRUCTING THE FLOW OF SAID MOLTEN BATH. SURFACES UNTIL THE SHEET IS SET IN THE DESIRED CURVATURE, ADVACING SAID SHEET OUT OF SAID BENDING AREA AND INTO SAID CHILLING AREA, AND CHILLING SAID SHEET TO TEMPER THE SAME IN SAID CHILLING AREA. 5484
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) | 1969-08-08 | 1970-02-07 | 1970-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-08 | 1974-02-07 | 1974-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-08 | 1978-02-07 | 1978-08-09 | $7700.00 | Window Closed / Lapsed |