US3291964A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Immersion heater steam boilers
Assignee: Bastian and Allen Ltd
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Filing: 1964-05-04
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Granted: 1966-12-13
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Expires: 1984-05-04
Abstract
No abstract record available.
Inventors
- 👤 Gerald A Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:28
CPC Classifications
F; F22; F22B; F22B1/00; F22B1/28; F22B1/284; F22B1/285
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
A STEAM GENERATION PLANT COMPRISING SUPPORT MEANS, A BOILER SHELL INCLUDING A CYLINDRICAL SIDE WALL, A FLAT UPPER DISC AND A FLAT LOWER DISC CLOSING THE ENDS OF THE CYLINDRICAL SIDE WALL AND ELECTRICAL HEATER ELEMENTS SUPPORTED FROM SAID SHELL INSIDE SAID SHELL, SAID BOILER SHELL BEING MOUNTED ON SAID SUPPORT MEANS WITH THE LONGITUDINAL AXIS OF SAID CYLINDRICAL SIDE WALL INCLINED TO THE VERTICAL BY AN ANGLE OF BETWEEN 20* AND 60*, A LIVE STEAM DELIVERY PASSAGE OPENING INTO THE BOILER SHELL THROUGH SAID UPPER DISC ADJACENT THE UPPER EDGE OF SAID UPPER DISC, AND A BLOW-DOWN DELIVERY PASSAGE OPENING INTO THE BOILER SHELL THROUGH SAID LOWER DISC ADJACENT THE LOWER EDGE OF SAID LOWER DISC.
Claim 2
Dependent Claim
117 words
A STEAM GENERATION PLANT COMPRISING SUPPORT MEANS, A BOILER SHELL INCLUDING A CYLINDRICAL SIDE WALL, A FLAT UPPER DISC AND A FLAT LOWER DISC CLOSING THE ENDS OF THE CYLINDRICAL SIDE WALL AND ELECTRICAL HEATER ELEMENTS SUPPORTED FROM SAID SHELL INSIDE SAID SHELL, SAID BOILER SHELL BEING MOUNTED ON SAID SUPPORT MEANS WITH THE LONGITUDINAL AXIS OF SAID CYLINDRICAL SIDE WALL INCLINED TO THE VERTICAL BY AN ANGLE OF BETWEEN 20* AND 60*, A LIVE STEAM DELIVERY PASSAGE OPENING INTO THE BOILER SHELL THROUGH SAID UPPER DISC ADJACENT THE UPPER EDGE OF SAID UPPER DISC, AND A BLOW-DOWN DELIVERY PASSAGE OPENING INTO THE BOILER SHELL THROUGH SAID LOWER DISC ADJACENT THE LOWER EDGE OF SAID LOWER DISC.
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) | 1969-12-12 | 1970-06-13 | 1970-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-12 | 1974-06-13 | 1974-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-12 | 1978-06-13 | 1978-12-13 | $7700.00 | Window Closed / Lapsed |