US3601980A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power plant for surface skimmers and hydrofoils
Assignee: Rolls Royce Solutions GmbH
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Filing: 1969-08-19
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Granted: 1971-08-31
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Expires: 1989-08-19
Abstract
Abstract A drive installation for surface skimmers and hydrofoils in which a main engine, preferably a gas turbine drives a main propeller and an auxiliary engine, preferably a Diesel engine, drives an auxiliary propeller, and in which the main propeller is also driven by the auxiliary engine by way of a variable speed transmission and a further transmission with multiple inputs for the main engine and the auxiliary engine.
Inventors
- 👤 Egon Faber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:00
CPC Classifications
F; F16; F16H; F16H47/00; F16H47/06; B; B63; B63H; B63H21/00; B63H21/12; B63H21/14; B63H21/16; B63H23/00; B63H23/02; B63H23/10; B63H23/12; B63H5/00; B63H5/07; B63H5/08; F16H37/00; F16H2700/00; F16H2700/02
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
121 words
A drive installation for surface skimmers and hydrofoils, with at least one propulsion unit including a first internal combustion engine as main engine operable to drive a main propeller for normal surface skimming or foil-borne operation and a second internal combustion engine as auxiliary engine driving an auxiliary propeller for displacement operation, characterized in that at normal surface-skimming or foil-borne operation at all main propeller speeds corresponding to the actual cruising speed of the boat, the auxiliary engine drives the main propeller, in addition to the drive of the main propeller by the main engine, by way of a multiple input gear means arranged between the main engine and the main propeller and by way of a variable speed transmission means.
Claim 2
Dependent Claim
121 words
A drive installation for surface skimmers and hydrofoils, with at least one propulsion unit including a first internal combustion engine as main engine operable to drive a main propeller for normal surface skimming or foil-borne operation and a second internal combustion engine as auxiliary engine driving an auxiliary propeller for displacement operation, characterized in that at normal surface-skimming or foil-borne operation at all main propeller speeds corresponding to the actual cruising speed of the boat, the auxiliary engine drives the main propeller, in addition to the drive of the main propeller by the main engine, by way of a multiple input gear means arranged between the main engine and the main propeller and by way of a variable speed transmission means.
Claim 3
Dependent Claim
31 words
A drive installation according to claim 1, characterized in that the variable speed transmission means is a hydrodynamic torque converter arranged between the auxiliary engine and the multiple input gear means.
Claim 4
Dependent Claim
17 words
A drive installation according to claim 1, characterized in that saiD main engine is a gas turbine.
Claim 5
Dependent Claim
17 words
A drive installation according to claim 3, characterized in that said auxiliary engine is a Diesel engine.
Claim 6
Dependent Claim
31 words
A drive installation according to claim 4, characterized in that the variable speed transmission means is a hydrodynamic torque converter arranged between the auxiliary engine and the multiple input gear means.
Claim 7
Dependent Claim
75 words
A drive installation according to claim 1, characterized in that a hydrodynamic torque converter of the converter-coupling type is used as variable speed transmission means, and in that the power train between auxiliary engine and main propeller includes additional mechanical gear means so that at nominal speed of the auxiliary engine and at the propeller speed corresponding to the most frequently used cruising speed of the boat, the torque converter operates in its coupling range.
Claim 8
Dependent Claim
32 words
A drive installation according to claim 6, characterized in that the additional mechanical gear means is a speedup transmission means between the auxiliary engine and an input shaft of the torque converter.
Claim 9
Dependent Claim
39 words
A drive installation according to claim 6, characterized in that the additional mechanical gear means is arranged in the multiple input gear means between an output shaft of the torque converter and a propeller shaft for the main propeller.
Claim 10
Dependent Claim
28 words
A drive installation according to claim 6, characterized in that the multiple input gear means is combined with a reduction gear which is normally required with gas turbines.
Claim 11
Dependent Claim
55 words
A drive installation according to claim 9, characterized in that the auxiliary engine is arranged to the rear of the main engine and in that power takeoff is available at both ends of the auxiliary engine, namely at the front-end to drive the torque converter and at the other end to drive the auxiliary propeller.
Claim 12
Dependent Claim
23 words
A drive installation according to claim 10, characterized in that the auxiliary propeller can be uncoupled from the auxiliary engine by disengageable means.
Claim 13
Dependent Claim
32 words
A drive installation according to claim 11, characterized in that the additional mechanical gear means is a speedup transmission means between the auxiliary engine and an input shaft of the torque converter.
Claim 14
Dependent Claim
39 words
A drive installation according to claim 11, characterized in that the additional mechanical gear means is arranged in the multiple input gear means between an output shaft of the torque converter and a propeller shaft for the main propeller.
Claim 15
Dependent Claim
17 words
A drive installation according to claim 11, characterized in that said main engine is a gas turbine.
Claim 16
Dependent Claim
17 words
A drive installation according to claim 14, characterized in that said auxiliary engine is a Diesel engine.
Claim 17
Dependent Claim
28 words
A drive installation according to claim 1, characterized in that the multiple input gear means is combined with a reduction gear which is normally required with gas turbines.
Claim 18
Dependent Claim
55 words
A drive installation according to claim 2, characterized in that the auxiliary engine is arranged to the rear of the main engine and in that power takeoff is available at both ends of the auxiliary engine, namely at the front-end to drive the torque converter and at the other end to drive the auxiliary propeller.
Claim 19
Dependent Claim
23 words
A drive installation according to claim 17, characterized in that the auxiliary propeller can be uncoupled from the auxiliary engine by disengageable means.
References Cited (Backward Citations)
US1184121A
Cited
US1261571A
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US1402875A
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GB707638A
Cited
US2712911A
Cited
US3388684A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-08-30 | 1975-03-01 | 1975-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-30 | 1979-03-01 | 1979-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-30 | 1983-03-01 | 1983-08-31 | $7700.00 | Window Closed / Lapsed |