Patent US3377994A successfully refreshed from Google Patents.
US3377994A
Expired / Lapsed
US
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Steam generating system
Assignee: YWHC Inc 2625 CONCORD PIKE PO 7138 WILMINGTON DE 19803 A CORP OF
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Filing: 1966-08-17
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Granted: 1968-04-16
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Expires: 1986-08-17
Abstract
No abstract record available.
Inventors
- 👤 Frederick H Horne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:08
CPC Classifications
F; F22; F22D; F22D11/00; F22D11/006
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
129 words
IN A STEAM GENERATING SYSTEM INCLUDING A SURGE TANK AND A BOILER WITH SURFACE BLOWDOWN MEANS, SAID SURGE TANK RECEIVING STEAM CONDENSATE FROM SAID SYSTEM AND MAKEUP WATER ADDED TO SAID SYSTEM TO FORM FEEDWATER FOR SAID BOILER, AND MEANS TO PASS SAID FEEDWATER FROM SAID SURGE TANK TO SAID BOILER, THE IMPROVEMENT COMPRISING MEANS FOR MEASURING THE AMOUNT OF MAKEUP WATER PASSED TO SAID SURGE TANK, MEANS FOR MEASURING THE AMOUNT OF FUEL PASSED TO SAID BOILER AND MEANS FOR ACTUATING SAID SURFACE BLOWDOWN MEANS AFTER A PREDETERMINED AMOUNT OF MAKEUP WATER HAS BEEN PASSED TO SAID SURGE TANK AND A PREDETERMINED AMOUNT OF FUEL HAS BEEN PASSED TO SAID BOILER IN RESPONSE TO SAID MEANS FOR MEASURING THE MAKEUP WATER AND SAID MEANS FOR MEASURING THE FUEL.
Claim 2
Dependent Claim
129 words
IN A STEAM GENERATING SYSTEM INCLUDING A SURGE TANK AND A BOILER WITH SURFACE BLOWDOWN MEANS, SAID SURGE TANK RECEIVING STEAM CONDENSATE FROM SAID SYSTEM AND MAKEUP WATER ADDED TO SAID SYSTEM TO FORM FEEDWATER FOR SAID BOILER, AND MEANS TO PASS SAID FEEDWATER FROM SAID SURGE TANK TO SAID BOILER, THE IMPROVEMENT COMPRISING MEANS FOR MEASURING THE AMOUNT OF MAKEUP WATER PASSED TO SAID SURGE TANK, MEANS FOR MEASURING THE AMOUNT OF FUEL PASSED TO SAID BOILER AND MEANS FOR ACTUATING SAID SURFACE BLOWDOWN MEANS AFTER A PREDETERMINED AMOUNT OF MAKEUP WATER HAS BEEN PASSED TO SAID SURGE TANK AND A PREDETERMINED AMOUNT OF FUEL HAS BEEN PASSED TO SAID BOILER IN RESPONSE TO SAID MEANS FOR MEASURING THE MAKEUP WATER AND SAID MEANS FOR MEASURING THE FUEL.
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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) | 1971-04-16 | 1971-10-16 | 1972-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-16 | 1975-10-16 | 1976-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-16 | 1979-10-16 | 1980-04-16 | $7700.00 | Window Closed / Lapsed |