US Patent No: 8,198,744
Number of patents in Portfolio can not be more than 2000
Integrated boost cavity ring generator for turbofan and turboshaft engines
Stats
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Jun 12, 2012
Issued date -
Dec 21, 2006
filing date -
11/614,269
serial no -
In Force
status
Importance
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Abstract
An electrical generator for extraction of electrical power from a gas turbine engine includes a rotor portion and a stator portion disposed within a booster cavity of the gas turbine engine. The rotor portion is rotatably supported about the stator portion. The stator portion rigidly is supported within the booster cavity. The rotor portion has a plurality of poles circumferentially arranged opposite the stator portion. The stator portion includes a plurality of coil portions disposed about an outer periphery of the stator portion adjacent to the stator portion. The stator and rotor portions are configured to generate electrical power when the rotor portion is rotated about the stator portion by a shaft of the gas turbine engine to induce electrical currents in the coil portions. The electrical generator extracts electric power from the turbine engine to supplement primary electrical generation sources of the engine.
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First Claim
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International Classification(s)
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Cited Art
| Patent Info | (Count) | # Cites | Year |
|---|---|---|---|
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| 6,553,753 Control systems and methods for water injection in a turbine engine | 5 | 1999 | |
| 6,355,987 Power converter and control for microturbine | 20 | 2000 | |
| 6,990,797 Methods and apparatus for operating gas turbine engines | 17 | 2003 | |
| 2005/0162,030 Brushless exciter with electromagnetically decoupled dual excitation systems for starter-generator applications | 5 | 2004 | |
| 7,514,810 Electric power generation using power turbine aft of LPT | 12 | 2006 | |
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| 6,713,892 Automatic turbogenerator restarting system | 5 | 2001 | |
| 6,787,933 Power generation system having transient ride-through/load-leveling capabilities | 28 | 2002 | |
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| 5,214,333 Engine with flywheel generator | 20 | 1990 | |
| 5,341,060 Engine with flywheel generator | 9 | 1993 | |
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| 6,789,000 Microprocessor-based control system for gas turbine electric powerplant | 8 | 2002 | |
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| 6,553,764 Enhanced response turbocharger using flywheel storage | 6 | 2001 | |
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| 4,362,020 Hermetic turbine generator | 33 | 1981 | |
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| 5,760,507 Electrical generating system for a motor vehicle | 4 | 1996 | |
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| 6,467,725 Electrical generator an aero-engine including such a generator, and an aircraft including such a generator | 55 | 2000 | |
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| 6,145,314 Compressor wheels and magnet assemblies for internal combustion engine supercharging devices | 26 | 1998 | |
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| 6,553,153 Method and apparatus for reducing video data | 6 | 1998 | |
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| 5,881,559 Hybrid electric vehicle | 48 | 1996 | |
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| 6,895,741 Differential geared turbine engine with torque modulation capability | 29 | 2003 | |
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| 5,694,765 Shaft power transfer in gas turbine engines with machines operable as generators or motors | 44 | 1995 | |
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| 6,914,344 Integrated starter/generator for a turbomachine | 17 | 2003 | |
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| 6,924,574 Dual-rotor, radial-flux, toroidally-wound, permanent-magnet machine | 11 | 2003 | |
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| 5,783,894 Method and apparatus for generating electrical energy | 35 | 1995 | |
| 6,434,936 Super diesel apparatus | 3 | 2001 | |
Patent Citation Ranking
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 3.5 Year Payment | $1600.00 | $800.00 | $400.00 | Dec 12, 2015 |
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Dec 12, 2019 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Dec 12, 2023 |
| Fee | Large entity fee | small entity fee | micro entity fee |
|---|---|---|---|
| Surcharge - 3.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
| Surcharge - 7.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
| Surcharge - 11.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
| Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
| Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |