US3228466A
Expired / Lapsed
US
⏱️ 0.0 years remaining
External heating arrangement for a storage tank
Assignee: Union Tank Car Co
•
Filing: 1964-04-24
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Granted: 1966-01-11
•
Expires: 1984-04-24
Abstract
No abstract record available.
Inventors
- 👤 John V Carleton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:38
CPC Classifications
B; B65; B65D; B65D88/00; B65D88/74; B65D88/744
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
76 words
IN A STORAGE TANK FORMED OF OPPOSED FRUSTO-CONICAL TANK SECTIONS JOINED AT THEIR BASES, THE IMPROVEMENT COMPRISING: A HEATING ARRANGEMENT FOR THE TANK, SAID HEATING ARRANGEMENT INCLUDING COIL MEANS FOR CARRYING HEATING FLUID SECURED TO THE OUTER SURFACE OF EACH TANK SECTION AND ARRANGED CIRCUMFERENTIALLY THEREOF, SAID COIL MEANS HAVING SUBSTANTIALLY STRAIGHT COIL SECTIONS DISPOSED ALONG STRAIGHT LINES ON SAID TANK SECTION EXTENDING THROUGH THE VERTEX OF THE CONE DEFINED IN PART BY SAID TANK SECTION.
Claim 2
Dependent Claim
76 words
IN A STORAGE TANK FORMED OF OPPOSED FRUSTO-CONICAL TANK SECTIONS JOINED AT THEIR BASES, THE IMPROVEMENT COMPRISING: A HEATING ARRANGEMENT FOR THE TANK, SAID HEATING ARRANGEMENT INCLUDING COIL MEANS FOR CARRYING HEATING FLUID SECURED TO THE OUTER SURFACE OF EACH TANK SECTION AND ARRANGED CIRCUMFERENTIALLY THEREOF, SAID COIL MEANS HAVING SUBSTANTIALLY STRAIGHT COIL SECTIONS DISPOSED ALONG STRAIGHT LINES ON SAID TANK SECTION EXTENDING THROUGH THE VERTEX OF THE CONE DEFINED IN PART BY SAID TANK SECTION.
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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) | 1969-01-10 | 1969-07-12 | 1970-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-10 | 1973-07-12 | 1974-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-10 | 1977-07-12 | 1978-01-11 | $7700.00 | Window Closed / Lapsed |