Patent US3262431A successfully refreshed from Google Patents.
US3262431A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Economic combination and operation of boiler throttle valves
Assignee: Combustion Engineering Inc
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Filing: 1963-03-25
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Granted: 1966-07-26
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Expires: 1983-03-25
Abstract
No abstract record available.
Inventors
- 👤 Frederick J Hanzalek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:57
CPC Classifications
F; F22; F22B; F22B35/00; F22B35/06; F22B35/14; F01; F01K; F01K3/00; F01K3/18; F01K3/20; F01K3/22; F22B29/00; F22B29/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
135 words
IN A VAPOR GENERATOR SYSTEM FOR SUPPLYING VAPOR TO A LOAD HAVING A SELECTED MINIMUM FLOW REQUIREMENT AND HAVING FIRST AND SECOND HEATING SECTIONS AND FIRST AND SECOND VALVE MEANS IN PARALLEL CONNECTING SAID SECTIONS IN SERIES AND AN ADJUSTABLE RESTRICTION AT THE OUTLET OF SAID SECOND SECTION, IN COMBINATION, MEANS FORCING A FLOW OF FLUID THROUGH SAID FIRST SECTION, SAID VALVE MEANS SAID SECOND SECTION AND SAID RESTRICTION IN SERIES, SAID FIRST VALVE MEANS BEING ADJUSTABLE TO IMPEDE SAID FLOW AND MAINTAIN A PREDETERMINED WORKING PRESSURE IN SAID FIRST SECTION, SAID RESTRICTION HAVING A PRESELECTED OPENING POSITION AT WHICH SAID SELECTED MINIMUM FLOW WILL PRODUCE A PRESELECTED PRESSURE IN SAID SECOND SECTION AND A GREATER THAN CRITICAL PRESSURE DROP ACROSS SAID FIRST VALVE MEANS, SAID FIRST VALVE MEANS HAVING A MAXIMUM FLOW CAPACITY AT
Claim 2
Dependent Claim
135 words
IN A VAPOR GENERATOR SYSTEM FOR SUPPLYING VAPOR TO A LOAD HAVING A SELECTED MINIMUM FLOW REQUIREMENT AND HAVING FIRST AND SECOND HEATING SECTIONS AND FIRST AND SECOND VALVE MEANS IN PARALLEL CONNECTING SAID SECTIONS IN SERIES AND AN ADJUSTABLE RESTRICTION AT THE OUTLET OF SAID SECOND SECTION, IN COMBINATION, MEANS FORCING A FLOW OF FLUID THROUGH SAID FIRST SECTION, SAID VALVE MEANS SAID SECOND SECTION AND SAID RESTRICTION IN SERIES, SAID FIRST VALVE MEANS BEING ADJUSTABLE TO IMPEDE SAID FLOW AND MAINTAIN A PREDETERMINED WORKING PRESSURE IN SAID FIRST SECTION, SAID RESTRICTION HAVING A PRESELECTED OPENING POSITION AT WHICH SAID SELECTED MINIMUM FLOW WILL PRODUCE A PRESELECTED PRESSURE IN SAID SECOND SECTION AND A GREATER THAN CRITICAL PRESSURE DROP ACROSS SAID FIRST VALVE MEANS, SAID FIRST VALVE MEANS HAVING A MAXIMUM FLOW CAPACITY AT
References Cited (Backward Citations)
US3038453A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-07-25 | 1970-01-24 | 1970-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-25 | 1974-01-24 | 1974-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-25 | 1978-01-24 | 1978-07-26 | $7700.00 | Window Closed / Lapsed |