Patent US4037409A successfully refreshed from Google Patents.
US4037409A
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US
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Gas turbine engine for vehicles
Assignee: MTU Aero Engines AG
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Filing: 1976-03-02
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Granted: 1977-07-26
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Expires: 1996-03-02
Abstract
Abstract A gas turbine engine for vehicles in which an infinitely variable transmission in the form of a hydraulic transmission is coupled to the engine. A flywheel stores and releases braking energy, and has a disengageable coupling connecting the flywheel with the variable transmission to at least one wheel drive shaft. The hydraulic transmission has a pump unit and a motor unit which are hydraulically operable. The pump unit and motor unit are reversible for braking the vehicle, whereby the motor is driven by the wheels of the vehicle and operates as a pump, and the pump unit operates as a motor.
Inventors
- 👤 Heinrich Leibach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:43
CPC Classifications
B; B60; B60K; B60K6/00; B60K6/08; B60K6/10; B60K6/105; B60K17/00; B60K17/04; B60K17/10; B60Y; B60Y2400/00; B60Y2400/43; B60Y2400/431; Y; Y02; Y02T; Y02T10/00; Y02T10/60; Y02T10/62; Y10; Y10S; Y10S74/00; Y10S74/05
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
130 words
Gas turbine engine for vehicles with at least one wheel drive shaft; an infinitely variable transmission for coupling said engine to said wheel drive shaft; a flywheel for storing and releasing braking energy; a disengageable coupling connecting said flywheel with said infinitely variable transmission to said wheel drive, said transmission comprising hydraulic transmission means having a pump unit and a motor unit operable hydraulically be said pump unit, said units being reversible for braking the vehicle, said motor unit being driven by the vehicle's wheels and operating as a pump, said pump unit operating as a motor and driving said flywheel when braking the vehicle, said flywheel being disengaged on the drive side, at the same time as the hydraulic transmission, from the gas-turbine engine by means of said clutch.
Claim 2
Dependent Claim
130 words
Gas turbine engine for vehicles with at least one wheel drive shaft; an infinitely variable transmission for coupling said engine to said wheel drive shaft; a flywheel for storing and releasing braking energy; a disengageable coupling connecting said flywheel with said infinitely variable transmission to said wheel drive, said transmission comprising hydraulic transmission means having a pump unit and a motor unit operable hydraulically be said pump unit, said units being reversible for braking the vehicle, said motor unit being driven by the vehicle's wheels and operating as a pump, said pump unit operating as a motor and driving said flywheel when braking the vehicle, said flywheel being disengaged on the drive side, at the same time as the hydraulic transmission, from the gas-turbine engine by means of said clutch.
Claim 3
Dependent Claim
20 words
Gas turbine engine as defined in claim 1, including an auxiliary clutch between said pump unit and said motor unit.
Claim 4
Dependent Claim
20 words
Gas turbine engine as defined in claim 1, including a reduction gear between the engine shaft and said hydraulic transmission.
References Cited (Backward Citations)
US3533493A
Cited
US3597998A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-07-25 | 1981-01-24 | 1981-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-07-25 | 1985-01-24 | 1985-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-07-25 | 1989-01-24 | 1989-07-26 | $7700.00 | Window Closed / Lapsed |