A marine propulsion system for shallow waters, swamps, savannahs and the like includes a rotating propeller shaft supporting a propeller. An anti-cavitation body defines a partial cylinder having a longitudinal axis adjacent to the propeller. The propeller generates a vacuum between the anti-cavitation body and a surface of a water body. First and second wings adjacent to edges of the anti-cavitation body are generally planar and operatively angled towards the bottom of a water body. The first and second wings are adjusted to run below the water body surface and seal the anti-cavitation body to maintain generated vacuum. A first thread is cut in a first helical direction at an end of the rotating propeller shaft adjacent the propeller, and slightly more distal therefrom a second thread is cut in a second helical direction opposed to the first thread helical direction. The second thread drives matter away from the bearing.
Long shaft propeller controller and bearing seal protector
08.01.2019
Patent
Elektronische Ressource
Englisch
| IPC: | B63H Schiffsantrieb oder Steuerung der Schiffe , MARINE PROPULSION OR STEERING |
Long Shaft Propeller Controller and Bearing Seal Protector
| Europäisches Patentamt | 2017
Long shaft propeller controller and bearing seal protector
| Europäisches Patentamt | 2016
Long shaft propeller controller and bearing seal protector
| Europäisches Patentamt | 2020
SEAL ARRANGEMENT FOR PROPELLER SHAFT AND METHOD FOR SEALING PROPELLER SHAFT
| Europäisches Patentamt | 2015