US3236261A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure operated step-opening valve
Assignee: Honeywell Inc
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Filing: 1961-08-14
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Granted: 1966-02-22
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Expires: 1981-08-14
Abstract
No abstract record available.
Inventors
- 👤 Hugh M Morgan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:55
CPC Classifications
F; F23; F23N; F23N5/00; F23N5/02; F23N5/027; F16; F16K; F16K31/00; F16K31/12; F16K31/36; F16K31/40; G; G05; G05D; G05D16/00; G05D16/04; G05D16/0402; F23N2235/00; F23N2235/12; F23N2235/20; F23N2235/24; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7781; Y10T137/7835; Y10T137/7836; Y10T137/8593; Y10T137/86928; Y10T137/87016; Y10T137/8704; Y10T137/87917
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
334 words
A STEP-OPENING FUEL VALVE COMPRISING: A VALVE BODY HAVING AN INLET ADAPTED TO BE CONNECTED TO A SOURCE OF FUEL UNDER PRESSURE AND AN OUTLET ADAPTED TO BE CONNECTED TO A FUEL BURNER; AN ON-OFF VALVE IN SAID BODY NEAR SAID OUTLET; A MODULATING VALVE IN SAID BODY NEAR SAID INLET; SAID MODULATING VALVE INCLUDING A MAIN CLOSURE MEMBER HAVING AN OPENING THERETHROUGH, A SMALL CLOSURE MEMBER ADAPTED TO CLOSE SAID OPENING, AND MEANS INTERMEDIATE SAID CLOSURE MEMBERS YIELDABLY BIASING SAID SMALL CLOSURE MEMBER AWAY FROM SAID MAIN CLOSURE MEMBER; A FIRST CHAMBER IN SAID BODY BETWEEN SAID VALVES; A SECOND CHAMBER IN SAID BODY; A PRESSURE RESPONSIVE MOVABLE WALL HAVING ONE SIDE THEREOF EXPOSED ONLY A FUEL PRESSURE IN SAID CHAMBER AND THE OTHER SIDE THEREOF EXPOSED ONLY TO FUEL PRESSURE IN SAID SECOND CHAMBER; MEANS, INCLUDING A DIRECT CONNECTION BETWEEN SAID SMALL CLOSURE MEMBER AND SAID MOVABLE WALL, OPERABLY CONNECTIN SAID MODULATING VALVE TO SAID MOVABLE WALL SO THAT FUEL PRESSURE IN SAID FIRST CHAMBER TENDS TO CLOSE AND MODULATING VALVE AND SO THAT PRESSURE IN SAID SECOND CHAMBER TENDS TO OPEN SAID MODULATING VALVE; A FLUID PASSAGE CONNECTING SAID SECOND CHAMBER TO SAID INLET; A RESTRICTION IN SAID PASSAGE; SAID BIASING MEANS OPERABLY CONNECTED TO SAID MOVABLE WALL AND URGING SAID MOVABLE WALL TOWARD SAID SECOND CHAMBER AND THEREBY TENDING TO CLOSE SAID MODULATING VALVE, SAID BIASING MEANS HAVING FORCE CHARACTERISTIC SUCH THAT WHEN SAID ON-OFF VALVE IS CLOSED SAID BIASING MEANS AND THE FUEL PRESSURE IN SAID FIRST CHAMBER EFFECT CLOSURE OF SAID MODULATING VALVE AND UPON INITIAL OPENING OF SAID ON-OFF VALVE, AND THE CONSEQUENT RELIEF OF PRESSURE OF SAID FIRST CHAMBER, SAID BIASING MEANS YIELDS TO EXPANSION OF FUEL IN SAID SECOND CHAMBER TO EFFECT MOVEMENT OF SAID MODULATING VALVE TO A PARTIALLY OPEN POSITION AND THEREBY YEILDS TO THE GRADUAL BUILD UP OF FUEL PRESSURE IN SAID SECOND CHAMBER THROUGH THE RESTRICTION IN SAID PASSAGE AND EFFECT OPENING OF SAID MODULATING VALVE TO A FULL FLOW POSITION.
Claim 2
Dependent Claim
334 words
A STEP-OPENING FUEL VALVE COMPRISING: A VALVE BODY HAVING AN INLET ADAPTED TO BE CONNECTED TO A SOURCE OF FUEL UNDER PRESSURE AND AN OUTLET ADAPTED TO BE CONNECTED TO A FUEL BURNER; AN ON-OFF VALVE IN SAID BODY NEAR SAID OUTLET; A MODULATING VALVE IN SAID BODY NEAR SAID INLET; SAID MODULATING VALVE INCLUDING A MAIN CLOSURE MEMBER HAVING AN OPENING THERETHROUGH, A SMALL CLOSURE MEMBER ADAPTED TO CLOSE SAID OPENING, AND MEANS INTERMEDIATE SAID CLOSURE MEMBERS YIELDABLY BIASING SAID SMALL CLOSURE MEMBER AWAY FROM SAID MAIN CLOSURE MEMBER; A FIRST CHAMBER IN SAID BODY BETWEEN SAID VALVES; A SECOND CHAMBER IN SAID BODY; A PRESSURE RESPONSIVE MOVABLE WALL HAVING ONE SIDE THEREOF EXPOSED ONLY A FUEL PRESSURE IN SAID CHAMBER AND THE OTHER SIDE THEREOF EXPOSED ONLY TO FUEL PRESSURE IN SAID SECOND CHAMBER; MEANS, INCLUDING A DIRECT CONNECTION BETWEEN SAID SMALL CLOSURE MEMBER AND SAID MOVABLE WALL, OPERABLY CONNECTIN SAID MODULATING VALVE TO SAID MOVABLE WALL SO THAT FUEL PRESSURE IN SAID FIRST CHAMBER TENDS TO CLOSE AND MODULATING VALVE AND SO THAT PRESSURE IN SAID SECOND CHAMBER TENDS TO OPEN SAID MODULATING VALVE; A FLUID PASSAGE CONNECTING SAID SECOND CHAMBER TO SAID INLET; A RESTRICTION IN SAID PASSAGE; SAID BIASING MEANS OPERABLY CONNECTED TO SAID MOVABLE WALL AND URGING SAID MOVABLE WALL TOWARD SAID SECOND CHAMBER AND THEREBY TENDING TO CLOSE SAID MODULATING VALVE, SAID BIASING MEANS HAVING FORCE CHARACTERISTIC SUCH THAT WHEN SAID ON-OFF VALVE IS CLOSED SAID BIASING MEANS AND THE FUEL PRESSURE IN SAID FIRST CHAMBER EFFECT CLOSURE OF SAID MODULATING VALVE AND UPON INITIAL OPENING OF SAID ON-OFF VALVE, AND THE CONSEQUENT RELIEF OF PRESSURE OF SAID FIRST CHAMBER, SAID BIASING MEANS YIELDS TO EXPANSION OF FUEL IN SAID SECOND CHAMBER TO EFFECT MOVEMENT OF SAID MODULATING VALVE TO A PARTIALLY OPEN POSITION AND THEREBY YEILDS TO THE GRADUAL BUILD UP OF FUEL PRESSURE IN SAID SECOND CHAMBER THROUGH THE RESTRICTION IN SAID PASSAGE AND EFFECT OPENING OF SAID MODULATING VALVE TO A FULL FLOW POSITION.
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) | 1969-02-21 | 1969-08-23 | 1970-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-21 | 1973-08-23 | 1974-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-21 | 1977-08-23 | 1978-02-22 | $7700.00 | Window Closed / Lapsed |