EP 2202143 A1 20100630 - Contra-rotating propeller propulsion system for ships
Title (en)
Contra-rotating propeller propulsion system for ships
Title (de)
Schiffsantrieb mit gegenläufigen Propellern
Title (fr)
Système de propulsion pour bateaux, avec des hélices contrarotatives
Publication
Application
Priority
EP 08382086 A 20081223
Abstract (en)
Applicable to ships or ships of all kinds, having a main propeller (2) actuated by an internal combustion engine (10), and a second propeller (2') that rotates contrary to the first, having a secondary shaft associated to the secondary propeller (2') and coaxially assembled on the primary shaft, forming a shaft line (4), the secondary shaft being related to the primary shaft through a set of conveniently lubricated conical transmission crown wheels housed within a case (5), which cause the movement transmitted by said internal combustion engine (10) to be transmitted to both shafts and with different directions of rotation. Additionally, an electric engine (6) acts on the aforementioned transmission, which may be inoperative, operate jointly with the internal combustion engine (10) or operate in an isolated manner while said combustion engine is stopped, in order to increase the power of the ship, reduce its speed and/or reduce the acoustic contamination of the ship's power unit.
IPC 8 full level
B63H 5/10 (2006.01); B63H 23/14 (2006.01)
CPC (source: EP)
B63H 5/10 (2013.01); B63H 23/14 (2013.01)
Citation (search report)
- [XY] EP 0132220 A1 19850123 - MITSUBISHI HEAVY IND LTD [JP]
- [YA] EP 1466826 A2 20041013 - WAERTSILAE FINLAND OY [FI]
- [X] WO 02090181 A1 20021114 - POPOVAC TEDY [HR]
- [X] US 2282266 A 19420505 - SWASKEY HENRY S
- [X] US 3087553 A 19630430 - KOSTYUN PAUL M
- [X] DE 9000354 U1 19900419
- [X] GB 2368056 A 20020424 - MILLER GRAHAM [GB]
- [X] US 4790782 A 19881213 - MCCORMICK DANIEL F [US]
- [X] WO 9503211 A1 19950202 - TWIN TECHNOLOGY DEV B V [NL], et al
- [A] WO 2006095042 A1 20060914 - WAERTSILAE FINLAND OY [FI], et al
- [A] WO 2007034030 A1 20070329 - WAERTSILAE FINLAND OY [FI], et al
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR
Designated extension state (EPC)
AL BA MK RS
DOCDB simple family (publication)
DOCDB simple family (application)
EP 08382086 A 20081223