US3171258A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Steam power plants
Assignee: English Electric Co Ltd
•
Filing: 1963-04-18
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Granted: 1965-03-02
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Expires: 1983-04-18
Abstract
No abstract record available.
Inventors
- 👤 Caldwell John
- 👤 Watson Henry
- 👤 Thomas Geoffrey Bernard
- 👤 Daltry John Harold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 06:43
CPC Classifications
F; F28; F28B; F28B3/00; F28B3/04; F01; F01K; F01K9/00; F01K9/003; F28B9/00; F28B9/04; F28B9/06; Y; Y10; Y10S; Y10S165/00; Y10S165/90
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
128 words
A STEAM POWER PLANT INCLUDING A STEAM TURBINE, A STEAM CONDENSER COMMUNICATING WITH THE TURBINE, FIRST DUCT MEANS CONNECTED TO THE CONDENSER FOR REMOVING WATER CONDENSATE THEREFROM, WATER-COOLING MEANS CONNECTED TO THE FIRST DUCT MEANS, SECOND DUCT MEANS CONNECTED BETWEEN THE COOLING MEANS AND THE CONDENSER FOR RETURNING THE CONDENSATE TO THE CONDENSER, PUMP MEANS IN THE FIRST DUCT MEANS, A TANK FOR CONTAINING CONDENSATE BELOW A PREDETERMINED LEVEL IN THE TANK AND CONNECTED IN THE FIRST DUCT MEANS BELOW THE SAID LEVEL AND BETWEEN THE CONDENSER AND THE PUMP MEANS SO AS TO RECEIVE CONDENSATE DIRECTLY FROM THE CONDENSER, AND PRESSURE-EQUALISING MEANS COMMUNICATING WITH THE INSIDE OF THE TANK, ABOVE SAID LEVEL SO AS TO MAINTAIN THE SURFACE OF WATER IN THE TANK AT A PREDETERMINED PRESSURE.
Claim 2
Dependent Claim
128 words
A STEAM POWER PLANT INCLUDING A STEAM TURBINE, A STEAM CONDENSER COMMUNICATING WITH THE TURBINE, FIRST DUCT MEANS CONNECTED TO THE CONDENSER FOR REMOVING WATER CONDENSATE THEREFROM, WATER-COOLING MEANS CONNECTED TO THE FIRST DUCT MEANS, SECOND DUCT MEANS CONNECTED BETWEEN THE COOLING MEANS AND THE CONDENSER FOR RETURNING THE CONDENSATE TO THE CONDENSER, PUMP MEANS IN THE FIRST DUCT MEANS, A TANK FOR CONTAINING CONDENSATE BELOW A PREDETERMINED LEVEL IN THE TANK AND CONNECTED IN THE FIRST DUCT MEANS BELOW THE SAID LEVEL AND BETWEEN THE CONDENSER AND THE PUMP MEANS SO AS TO RECEIVE CONDENSATE DIRECTLY FROM THE CONDENSER, AND PRESSURE-EQUALISING MEANS COMMUNICATING WITH THE INSIDE OF THE TANK, ABOVE SAID LEVEL SO AS TO MAINTAIN THE SURFACE OF WATER IN THE TANK AT A PREDETERMINED PRESSURE.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-03-01 | 1968-08-31 | 1969-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-01 | 1972-08-31 | 1973-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-01 | 1976-08-31 | 1977-03-02 | $7700.00 | Window Closed / Lapsed |