US3178891A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Feedwater heater
Assignee: Baldwin Lima Hamilton Corp
•
Filing: 1962-03-16
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Granted: 1965-04-20
•
Expires: 1982-03-16
Abstract
No abstract record available.
Inventors
- 👤 Harold R Lawrance
- 👤 Caesar M Danesi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:07
CPC Classifications
F; F22; F22D; F22D1/00; F22D1/32
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
A PACKAGED FEEDWATER HEATER FOR STEAM TUBINE HAVING A PLURALITY OF STEAM EXTRACTION POINTS OF VARYING TEMPERATURE AND PRESSURE INCLUDING, (A) SHELL HOUSING WALLS PROVIDED A HORIZONTAL SHELL CHAMBER, (B) A PLURALITY OF PARTITION WALLS EXTENDING BETWEEN THE SHELL HOUSING WALLS AND DRIVING THE CHAMBER INTO A PLURALITY OF SEPARATE HORIZONTAL ADJACENT COMPARTMENTS, (C) TUBE SHEET MEANS FOR EACH COMPARTMENT, (D) TUBE BUNDLE MEANS FOR CONDENSING STEAM TO STEAM CONDENSATE IN EACH COMPARTMENT CONNECTED WITH THE TUBE SHEET MEANS FOR SAID COMPARTMENT, (E) EACH COMPARTMENT AND ITS TUBE SHEET AND TUBE BUNDLE MEANS CONSTITUTING A FEEDWATER HEATER UNIT,
Claim 2
Dependent Claim
98 words
A PACKAGED FEEDWATER HEATER FOR STEAM TUBINE HAVING A PLURALITY OF STEAM EXTRACTION POINTS OF VARYING TEMPERATURE AND PRESSURE INCLUDING, (A) SHELL HOUSING WALLS PROVIDED A HORIZONTAL SHELL CHAMBER, (B) A PLURALITY OF PARTITION WALLS EXTENDING BETWEEN THE SHELL HOUSING WALLS AND DRIVING THE CHAMBER INTO A PLURALITY OF SEPARATE HORIZONTAL ADJACENT COMPARTMENTS, (C) TUBE SHEET MEANS FOR EACH COMPARTMENT, (D) TUBE BUNDLE MEANS FOR CONDENSING STEAM TO STEAM CONDENSATE IN EACH COMPARTMENT CONNECTED WITH THE TUBE SHEET MEANS FOR SAID COMPARTMENT, (E) EACH COMPARTMENT AND ITS TUBE SHEET AND TUBE BUNDLE MEANS CONSTITUTING A FEEDWATER HEATER UNIT,
References Cited (Backward Citations)
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US2143287A
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US2508247A
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Cited
US3016712A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-04-19 | 1968-10-19 | 1969-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-19 | 1972-10-19 | 1973-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-19 | 1976-10-19 | 1977-04-20 | $7700.00 | Window Closed / Lapsed |