US3288322A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Floating covers for liquid storage tanks
Assignee: Nayler Petroseals Ltd
•
Filing: 1965-01-25
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Granted: 1966-11-29
•
Expires: 1985-01-25
Abstract
No abstract record available.
Inventors
- 👤 David D Marshall
- 👤 Irenie M Nayler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 11:30
CPC Classifications
B; B65; B65D; B65D88/00; B65D88/34
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
76 words
A FLOATING COVER FOR A LIQUID STORAGE TANK COMPRISING A PLURALITY OF SHEETS OF FIBRE GLASS, A RIB MOULDED LONGITUDINALLY OF THE LONGER SIDES OF EACH SHEET, A BUOYANT LOG OF URETHANE FOAM SECURED TO THE UNDERSIDE OF EACH SHEET BETWEEN THE RIBS TO GIVE BUOYANCY THERETO, A RUBBER ADHESIVE TAPE BY WHICH ADJACENT SHEETS ARE RESILIENTLY HINGED TOGETHER AND A COATING OF PROTECTIVE RESIN OVER THE SHEET AND TAPE TO FORM A LIQUID PROOF SEAL.
Claim 2
Dependent Claim
76 words
A FLOATING COVER FOR A LIQUID STORAGE TANK COMPRISING A PLURALITY OF SHEETS OF FIBRE GLASS, A RIB MOULDED LONGITUDINALLY OF THE LONGER SIDES OF EACH SHEET, A BUOYANT LOG OF URETHANE FOAM SECURED TO THE UNDERSIDE OF EACH SHEET BETWEEN THE RIBS TO GIVE BUOYANCY THERETO, A RUBBER ADHESIVE TAPE BY WHICH ADJACENT SHEETS ARE RESILIENTLY HINGED TOGETHER AND A COATING OF PROTECTIVE RESIN OVER THE SHEET AND TAPE TO FORM A LIQUID PROOF SEAL.
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) | 1969-11-28 | 1970-05-30 | 1970-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-28 | 1974-05-30 | 1974-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-28 | 1978-05-30 | 1978-11-29 | $7700.00 | Window Closed / Lapsed |