Torque boosting propeller device
OwnerMehmet Nevres Ulgeninventor
Life of this patent
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Abstract
A propeller device for a marine vehicle with a main shaft; a front propeller is provided on the main shaft, the front propeller having a hub and a plurality of blades extending radially outwardly from the hub; a rear propeller being co-axially to and spaced from the front propeller, the rear propeller having a hub and a plurality of blades extending radially outwardly from the hub. A second shaft being communicated with the hub of the front propeller; and at least one support for supporting the rear propeller on the second shaft, the support prevents the second shaft to rotate in the direction of rotation of the main shaft, and being free to rotate thereof in the counter direction of rotation of the main shaft.
Claims10
A propeller device for a marine vehicle, the propeller device comprising:
- a front propeller for mounting on a main shaft (3) communicating with a drive engine of the marine vehicle, the front propeller having a hub (1) and a plurality of blades (2) extending radially outwardly from the hub (1);
- a rear propeller being co-axially to and spaced from the front propeller, the rear propeller having a hub (4) and a plurality of blades (5) extending radially outwardly from the hub (4);
- a second shaft (6) fixedly communicating with the front propeller hub (1);
- at least one support (10) for supporting the rear propeller on the second shaft (6), the at least one support preventing the second shaft (6) from rotating in the direction of rotation of the main shaft (3) when the marine vessel travels in a forward direction and being free to rotate thereof in the counter direction of rotation of the main shaft (3) when the marine vessel travels in a backward direction.
Dependencies are inferred from the claim text.