US3273988A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for producing all-glass multiple sheet glazing units
Assignee: Libbey Owens Ford Glass Co
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Filing: 1964-07-06
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Granted: 1966-09-20
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Expires: 1984-07-06
Abstract
No abstract record available.
Inventors
- 👤 Harry N Dean
- 👤 Jr John C Morgan
- 👤 Lester H Flaherty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:20
CPC Classifications
C; C03; C03B; C03B23/00; C03B23/20; C03B23/24; C03B23/245
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
151 words
IN APPARATUS FOR PRODUCING ALL-GLASS MULTIPLE SHEET GLAZING UNITS, SUPPORTING AND CONVEYING MEANS TO SUPPORT TWO SHEETS OF GLASS IN SPACED FACE-TO-FACE RELATION AND TO CARRY THEM ALONG A DEFINING PATH THROUGH A HEATING CHAMBER, HEATING ASSEMBLY DISPOSED IN SAID CHAMBER ADJACENT SAID PATH, SAID HEATING ASSEMBLY HAVING DIRECTING MEANS DISPOSED ON OPPOSITE SIDES OF SAID PATH TO DIRECT HEATING FLAMES TOWARD SAID PATH, SAID DIRECTING MEANS BEING DISPOSED ADJACENT AREAS OF SAID SHEETS LOCATED INWARDLY OF THE MARGINAL EDGE PORTIONS THEREOF TO DIRECT SAID FLAMES IN AN ANGULAR DIRECTION AWAY FROM THE INNER PORTIONS OF THE SHEETS AND ONTO SAID MARGINAL EDGE PORTIONS THEREBY TO BRING SAID PORTIONS TO THE FUSION TEMPERATURE OF GLASS AS THE SHEETS ARE CARRIED THEREBY, AND MEANS DISPOSED ADJACENT SAID PATH BEYOND SAID BURNER ASSEMBLY TO ENGAGE THE HEATED MARGINAL EDGE PORTIONS OF THE SHEETS AND TO URGE THEM INTO FUSION CONTACT WITH ONE ANOTHER.
Claim 2
Dependent Claim
151 words
IN APPARATUS FOR PRODUCING ALL-GLASS MULTIPLE SHEET GLAZING UNITS, SUPPORTING AND CONVEYING MEANS TO SUPPORT TWO SHEETS OF GLASS IN SPACED FACE-TO-FACE RELATION AND TO CARRY THEM ALONG A DEFINING PATH THROUGH A HEATING CHAMBER, HEATING ASSEMBLY DISPOSED IN SAID CHAMBER ADJACENT SAID PATH, SAID HEATING ASSEMBLY HAVING DIRECTING MEANS DISPOSED ON OPPOSITE SIDES OF SAID PATH TO DIRECT HEATING FLAMES TOWARD SAID PATH, SAID DIRECTING MEANS BEING DISPOSED ADJACENT AREAS OF SAID SHEETS LOCATED INWARDLY OF THE MARGINAL EDGE PORTIONS THEREOF TO DIRECT SAID FLAMES IN AN ANGULAR DIRECTION AWAY FROM THE INNER PORTIONS OF THE SHEETS AND ONTO SAID MARGINAL EDGE PORTIONS THEREBY TO BRING SAID PORTIONS TO THE FUSION TEMPERATURE OF GLASS AS THE SHEETS ARE CARRIED THEREBY, AND MEANS DISPOSED ADJACENT SAID PATH BEYOND SAID BURNER ASSEMBLY TO ENGAGE THE HEATED MARGINAL EDGE PORTIONS OF THE SHEETS AND TO URGE THEM INTO FUSION CONTACT WITH ONE ANOTHER.
References Cited (Backward Citations)
US2761249A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-19 | 1970-03-21 | 1970-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-19 | 1974-03-21 | 1974-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-19 | 1978-03-21 | 1978-09-20 | $7700.00 | Window Closed / Lapsed |