Patent US3264081A successfully refreshed from Google Patents.
US3264081A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of flat glass
Assignee: Pilkington Group Ltd
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Filing: 1962-03-26
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Granted: 1966-08-02
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Expires: 1982-03-26
Abstract
No abstract record available.
Inventors
- 👤 Lionel A B Pilkington
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:17
CPC Classifications
C; C03; C03B; C03B18/00; C03B18/02; C03B18/04; C03B18/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
119 words
A METHOD OF MANUFACTURING FLAT GLASS IN RIBBON FORM BY DELIVERING GLASS AT A CONTROLLED RATE TO A BATH OF MOLTEN METAL CONFINED AGAINST LONGITUDINAL MOVEMENT TO ESTABLISH A BUOYANT LAYER OF MOLTEN GLASS ON THE BATH, CONFINING SAID BUOYANT LAYER OF MOLTEN GLASS BETWEEN SURFACES EXTENDING LONGITUDINALLY OF THE BATH, THE MOLTEN GLASS ENGAGING SAID SURFACES, ADVANCING THE BUOYANT LAYER ALONG AND RELATIVE TO THE SURFACE OF THE BATH, SIMULTANEOUSLY ADVANCING THE CONFINING SURFACES WITH THE GLASS ALONG THE BATH AT THE SAME SPEED AS THE GLASS TO MAINTAIN A UNIFORM VELOCITY ACROSS THE WHOLE WIDTH OF THE LAYER, AND THEN COOLING THE LAYER SUFFICIENTLY TO ENABLE IT TO BE TAKEN IN RIBBON FORM UNHARMED FROM THE BATH.
Claim 2
Independent Claim
119 words
A METHOD OF MANUFACTURING FLAT GLASS IN RIBBON FORM BY DELIVERING GLASS AT A CONTROLLED RATE TO A BATH OF MOLTEN METAL CONFINED AGAINST LONGITUDINAL MOVEMENT TO ESTABLISH A BUOYANT LAYER OF MOLTEN GLASS ON THE BATH, CONFINING SAID BUOYANT LAYER OF MOLTEN GLASS BETWEEN SURFACES EXTENDING LONGITUDINALLY OF THE BATH, THE MOLTEN GLASS ENGAGING SAID SURFACES, ADVANCING THE BUOYANT LAYER ALONG AND RELATIVE TO THE SURFACE OF THE BATH, SIMULTANEOUSLY ADVANCING THE CONFINING SURFACES WITH THE GLASS ALONG THE BATH AT THE SAME SPEED AS THE GLASS TO MAINTAIN A UNIFORM VELOCITY ACROSS THE WHOLE WIDTH OF THE LAYER, AND THEN COOLING THE LAYER SUFFICIENTLY TO ENABLE IT TO BE TAKEN IN RIBBON FORM UNHARMED FROM THE BATH.
References Cited (Backward Citations)
US1489852A
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US710357A
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US1548435A
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US2618012A
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US2668988A
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US2689982A
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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) | 1969-08-01 | 1970-01-31 | 1970-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-01 | 1974-01-31 | 1974-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-01 | 1978-01-31 | 1978-08-02 | $7700.00 | Window Closed / Lapsed |