US3249415A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for heat treating glass sheets
Assignee: Permaglass Inc
•
Filing: 1964-12-24
•
Granted: 1966-05-03
•
Expires: 1984-12-24
Abstract
No abstract record available.
Inventors
- 👤 Harold A Mcmaster
- 👤 Norman C Nitschke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:13
CPC Classifications
C; C03; C03B; C03B29/00; C03B29/04; C03B29/06; C03B29/08; Y; Y10; Y10S; Y10S198/00; Y10S198/952
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
202 words
APPARATUS FOR BENDING GLASS SHEETS TO CONFORMITY WITH SAG MOLDS, SAID APPARATUS COMPRISING, IN COMBINATION, A FURNACE HAVING TWO NEIGHBORING HEATING ZONES, AN ENTRANCE INTO THE FIRST OF SAID ZONES AND EXIT FROM THE SECOND OF SAID ZONES, MEANS FOR HEATING THE FIRST OF SAID ZONES TO A CONTROLLED PRE-HEAT TEMPERATURE, MEANS FOR HEATING THE SECOND OF SAID ZONES TO A CONTROLLED BENDING TEMPERATURE, A FIRST MOLD CONVEYOR EXTENDING THROUGH SAID ENTRANCE INTO AND THROUGH THE LENGTH OF SAID FIRST ZONE, A FIRST CYCLIC DRIVE MECHANISM OPERATIVELY CONNECTED TO DRIVE SAID FIRST CONVEYOR, A SECOND MOLD CONVEYOR EXTENDING IN ALIGNMENT WITH SAID FIRST CONVEYOR AND THROUGH THE LENGTH OF SAID SECOND ZONE, A FIRST CLUTCH ADAPTED TO COUPLE SAID FIRST AND SECOND CONVEYORS, A TIMER CONNECTED TO SAID FIRST CYCLIC DRIVE MECHANISM FOR ACTUATING SAID FIRST CYCLIC DRIVE MECHANISM AND FOR CLOSING SAID FIRST CLUTCH UPON THE EXPIRATION OF A FIXED PRE-HEAT TIME PERIOD FOR MOVING A MOLD FROM SAID FIRST ZONE TO SAID SECOND ZONE AND SUCCEEDING MOLD FROM OUTSIDE SAID FURNACE THROUGH SAID ENTRANCE AND INTO SAID FIRST ZONE, A THIRD MOLD CONVEYOR EXTENDING IN ALIGNMENT WITH THE END OF SAID SECOND CONVEYOR AND AWAY FROM SAID EXIT, A SECOND
Claim 2
Dependent Claim
202 words
APPARATUS FOR BENDING GLASS SHEETS TO CONFORMITY WITH SAG MOLDS, SAID APPARATUS COMPRISING, IN COMBINATION, A FURNACE HAVING TWO NEIGHBORING HEATING ZONES, AN ENTRANCE INTO THE FIRST OF SAID ZONES AND EXIT FROM THE SECOND OF SAID ZONES, MEANS FOR HEATING THE FIRST OF SAID ZONES TO A CONTROLLED PRE-HEAT TEMPERATURE, MEANS FOR HEATING THE SECOND OF SAID ZONES TO A CONTROLLED BENDING TEMPERATURE, A FIRST MOLD CONVEYOR EXTENDING THROUGH SAID ENTRANCE INTO AND THROUGH THE LENGTH OF SAID FIRST ZONE, A FIRST CYCLIC DRIVE MECHANISM OPERATIVELY CONNECTED TO DRIVE SAID FIRST CONVEYOR, A SECOND MOLD CONVEYOR EXTENDING IN ALIGNMENT WITH SAID FIRST CONVEYOR AND THROUGH THE LENGTH OF SAID SECOND ZONE, A FIRST CLUTCH ADAPTED TO COUPLE SAID FIRST AND SECOND CONVEYORS, A TIMER CONNECTED TO SAID FIRST CYCLIC DRIVE MECHANISM FOR ACTUATING SAID FIRST CYCLIC DRIVE MECHANISM AND FOR CLOSING SAID FIRST CLUTCH UPON THE EXPIRATION OF A FIXED PRE-HEAT TIME PERIOD FOR MOVING A MOLD FROM SAID FIRST ZONE TO SAID SECOND ZONE AND SUCCEEDING MOLD FROM OUTSIDE SAID FURNACE THROUGH SAID ENTRANCE AND INTO SAID FIRST ZONE, A THIRD MOLD CONVEYOR EXTENDING IN ALIGNMENT WITH THE END OF SAID SECOND CONVEYOR AND AWAY FROM SAID EXIT, A SECOND
References Cited (Backward Citations)
US234887A
Cited
GB292448A
Cited
US2646647A
Cited
US2766555A
Cited
US2671987A
Cited
US2917871A
Cited
US2794300A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-05-02 | 1969-11-01 | 1970-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-02 | 1973-11-01 | 1974-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-02 | 1977-11-01 | 1978-05-03 | $7700.00 | Window Closed / Lapsed |