US3587766A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Auxiliary turbine braking system for free-turbine gas-turbine engines
Assignee: Caterpillar Inc
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Filing: 1969-09-17
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Granted: 1971-06-28
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Expires: 1989-09-17
Abstract
Abstract IN A GAS-COUPLED OR FREE-TURBINE GAS-TURBINE ENGINE AN AUXILIARY TURBINE IS CONNECTED THROUGH A VALUE TO RECEIVE COMPRESSOR DELIVERY AIR AND HAS ITS SHAFT OUTPUT DRIVINGLY COMNECTED TO THE GEAR TRAIN DRIVEN BY THE POWER TURBINE WHEREBY INCREASED POWER ABSORBING CAPACITY CAN BE OBTAINED DURING POWER REGENERATION BY OPENING THE VALUE. BY CONTROLLING THE FLOW OF COMPRESSOR DELIVERY AIR TO THE AUXILIARY TURBINE MODULATION OF THE POWER-ABSORBING CAPACITY OF THE ENGINE CAN BE OBTAINED.
Inventors
- 👤 Peter M Slade
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 18:08
CPC Classifications
F; F02; F02C; F02C3/00; F02C3/04; F02C3/13; F02C3/107; F02C3/113; F02C7/00; F02C7/36
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-27 | 1974-12-27 | 1975-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-27 | 1978-12-27 | 1979-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-27 | 1982-12-27 | 1983-06-28 | $7700.00 | Window Closed / Lapsed |