The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 24, 2019
Filed:
Oct. 18, 2016
Skf Marine Gmbh, Hamburg, DE;
Michael Zollenkopf, Hamburg, DE;
Frank Albrecht, Stadtoldendorf, DE;
Ulrich Albrecht, Stadtoldendorf, DE;
Kai Danneberg, Hamburg, DE;
Uwe Leitloff, Wennigsen, DE;
Thomas Siebrecht, Elmshorn, DE;
Holger Spardel, Hamburg, DE;
SKF Marine GmbH, Hamburg, DE;
Abstract
The invention relates to a cover device for at least sectional closing of an underwater opening in a hull of a watercraft, in particular an opening of a transverse channel of a thruster. According to the invention the cover device includes at least one variable-volume hollow chamber lip including at least one buoyancy body, and the at least one hollow chamber lip is shiftable into an expansion state or into a shrinkage state by supplying or removing a fluid, in particular air. As a result of the variable-volume or inflatable cover device a more reliable and simultaneously lower-maintenance operation of the cover device is given. In addition, the invention has a thruster, in particular a bow or stern-thruster, as subject matter.