Patent US3228408A successfully refreshed from Google Patents.
US3228408A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acceleration control for gas turbine engines
Assignee: ZF International UK Ltd
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Filing: 1962-01-12
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Granted: 1966-01-11
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Expires: 1982-01-12
Abstract
No abstract record available.
Inventors
- 👤 Young John Michael Crispin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:38
CPC Classifications
F; F02; F02C; F02C9/00; F02C9/16; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2559; Y10T137/2562; Y10T137/2574; Y10T137/2605; Y10T137/8593; Y10T137/85978; Y10T137/86171
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
205 words
AN ACCELERATION CONTROL FOR A GAS TURBINE ENGINE, COMPRISING A PUMP FOR SUPPLYING FUEL TO THE ENGINE, A CYLINDER, A PISTON SLIDABLE WITHIN THE CYLINDER AND DIVIDING THE LATTER INTO A FIRST CHAMBER WHICH IS CONNECTED TO THE DELIVERY SIDE OF THE PUMP, AND A SECOND CHAMBER WHICH IS CONNECTED TO THE INLET SIDE OF THE PUMP THROUGH A DEVICE WHICH IN USE SPILLS FUEL FROM THE SECOND CHAMBER AT A PREDETERMINED RATE, A PASSAGE IN THE PISTON THROUGH WHICH FUEL CAN FLOW FROM THE FIRST CHAMBER, SAID SPRING BALANCING THE PRESSURE DROP BETWEEN THR FIRST AND SECOND DECREASE THE SIZE OF THE FIRST CHAMBER, SAID SPRING BALANCING THE PRESSURE DROP BETWEEN THE FIRST AND SECOND CHAMBERS WHEN THE ENGING IS RUNNING AT A STEADY SPEED, A VALVE THROUGH WHICH FUEL FLOWS TO THE ENGINE, SAID VALVE BEING CONNECTED TO THE PISTON SO AS TO OCCUPY A PARTLY OPEN POSITION WHEN THE ENGINE IS RUNNING AT A STEADY SPEED, AND MEANS FOR BREAKING COMMUNICATION BETWEEN THE FIRST AND SECOND CHAMBERS WHEN IT IS DESIRED TO ACCELERATE THE ENGINE, WHEREAFTER THE PRESSURE IN THE SECOND CHAMBER DROPS AT A RATE DEPENDENT ON SAID DEVICE AND THE PISTON IS MOVED TO OPEN THE VALVE AT SAID RATE.
Claim 2
Dependent Claim
205 words
AN ACCELERATION CONTROL FOR A GAS TURBINE ENGINE, COMPRISING A PUMP FOR SUPPLYING FUEL TO THE ENGINE, A CYLINDER, A PISTON SLIDABLE WITHIN THE CYLINDER AND DIVIDING THE LATTER INTO A FIRST CHAMBER WHICH IS CONNECTED TO THE DELIVERY SIDE OF THE PUMP, AND A SECOND CHAMBER WHICH IS CONNECTED TO THE INLET SIDE OF THE PUMP THROUGH A DEVICE WHICH IN USE SPILLS FUEL FROM THE SECOND CHAMBER AT A PREDETERMINED RATE, A PASSAGE IN THE PISTON THROUGH WHICH FUEL CAN FLOW FROM THE FIRST CHAMBER, SAID SPRING BALANCING THE PRESSURE DROP BETWEEN THR FIRST AND SECOND DECREASE THE SIZE OF THE FIRST CHAMBER, SAID SPRING BALANCING THE PRESSURE DROP BETWEEN THE FIRST AND SECOND CHAMBERS WHEN THE ENGING IS RUNNING AT A STEADY SPEED, A VALVE THROUGH WHICH FUEL FLOWS TO THE ENGINE, SAID VALVE BEING CONNECTED TO THE PISTON SO AS TO OCCUPY A PARTLY OPEN POSITION WHEN THE ENGINE IS RUNNING AT A STEADY SPEED, AND MEANS FOR BREAKING COMMUNICATION BETWEEN THE FIRST AND SECOND CHAMBERS WHEN IT IS DESIRED TO ACCELERATE THE ENGINE, WHEREAFTER THE PRESSURE IN THE SECOND CHAMBER DROPS AT A RATE DEPENDENT ON SAID DEVICE AND THE PISTON IS MOVED TO OPEN THE VALVE AT SAID RATE.
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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) | 1969-01-10 | 1969-07-12 | 1970-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-10 | 1973-07-12 | 1974-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-10 | 1977-07-12 | 1978-01-11 | $7700.00 | Window Closed / Lapsed |