US3253731A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hot water storage tanks
Assignee: General Electric Co
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Filing: 1963-12-23
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Granted: 1966-05-31
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Expires: 1983-12-23
Abstract
No abstract record available.
Inventors
- 👤 Donald E Fink
- 👤 Raymond A Krishock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:21
CPC Classifications
F; F24; F24H; F24H1/00; F24H1/18; F24H1/181; F24H1/182; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49863; Y10T29/49874; Y10T29/49879
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
129 words
A HOT WATER STORATE TANK COMPRISING A HOLLOW METAL TANK BODY, AND A HEAT-INSULATING JACKJET CARRIED BY THE EXTERIOR OF SAID TANK BODY, SAID JACKET INCLUDING A RELATIVELY WHICH INNER LAYER INTIMATELY ADHERED TO THE OUTER SURFACE OF SAID TANK AND A RELATIVELY THIN COMPOSITE LAYER INTIMATELY ADHERED TO SAID INNER LAYER AT THE BOUNDARY THEREBETWEEN, SAID INNER LAYER CONSISTING ESSENTIALLY OF A POLYESTER-URETHANE RESIN OF RESILIENT CELLULAR STRUCTURE, SAID COMPOSITE OUTER LAYER INCLUDING AN INNER PLY AND AN INTERMEDIATE PLY INTIMATELY ADHERED TO SAID INNER PLY AND AN OUTER PLY INTIMATELY ADHERED TO SAID INTERMEDIATE PLY, SAID INNER PLY CONSISTING ESSENTIALLY OF AN IMPERFORATE METAL FOIL, SAID INTERMEDIATE PLY CONSISTING ESSENTIALLY OF KRAFT BOARD, SAID OUTER PLY CONSISTING ESSENTIALLY OF A POLYETHYLENE RESIN OF STRONG TOUGH DENSE STRUCTURE.
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) | 1969-05-30 | 1969-11-29 | 1970-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-30 | 1973-11-29 | 1974-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-30 | 1977-11-29 | 1978-05-31 | $7700.00 | Window Closed / Lapsed |