Arrangement and method for parallel alignment of propeller...

Details Arrangement and method for parallel alignment of propeller... Arrangement and method for parallel alignment of propeller...

2007-05-22

2007-05-22

Olson, Lars A (Department: 3617)

Marine propulsion

Screw propeller

Propulsion unit casing

C318S588000

Reexamination Certificate

active

11553343

ABSTRACT:
An arrangement and method for parallel alignment of propeller shafts in a first and a second underwater housing arranged on the hull of a vessel, which underwater housings are arranged to rotate around an axis of rotation which is angled in relation to the propeller shafts arranged in each underwater housing, which arrangement includes a servo motor arranged for each underwater housing, which servo motor is arranged to rotate said underwater housing. A position sensor arranged for each servo motor, which position sensor is arranged to detect an angular position of the underwater housing. A control unit in which a reference angular position of the underwater housing is arranged to be stored during a calibration of the position of the underwater housing; and a calibrator of the position of the underwater housings by storing output signals from the position sensors in the control unit during a parallel alignment of propeller shafts in two underwater housings arranged on the hull of a vessel.

REFERENCES:
patent: 3349744 (1967-10-01), Marcier
patent: 3913517 (1975-10-01), Lohse et al.
patent: 4595867 (1986-06-01), Cognevich, Sr. et al.
patent: 5313397 (1994-05-01), Singh et al.
patent: 5361024 (1994-11-01), Wisner et al.
patent: 2003/0079668 (2003-05-01), Morvillo
patent: 508314 (1998-09-01), None

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