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1. (WO2018202583) COVER DEVICE AND THRUSTER

Pub. No.:    WO/2018/202583    International Application No.:    PCT/EP2018/060919
Publication Date: Fri Nov 09 00:59:59 CET 2018 International Filing Date: Sat Apr 28 01:59:59 CEST 2018
IPC: B63B 1/36
B63B 13/02
B63H 25/46
Applicants: SKF MARINE GMBH
Inventors: SPARDEL, Holger
ALBRECHT, Frank
ALBRECHT, Ulrich
DANNEBERG, Kai
LEITLOFF, Uwe
Title: COVER DEVICE AND THRUSTER
Abstract:
The invention relates to a cover device for closing an underwater opening in the hull of a watercraft at least in some regions, in particular an opening of a transverse channel of a thruster. According to the invention, the cover device has at least one volume-modifiable hollow lip assembly with at least two hollow lips which can be converted into an expanded state or a shrunk state by supplying or discharging a fluid, in particular air. By virtue of the volume-modifiable or inflatable cover device, the cover device can be operated in a reliable manner while requiring little maintenance at the same time. The invention additionally relates to a thruster, in particular a bow or stern thruster.