EP 0189154 B1 19890104 - BOAT WITH RETRACTABLE KEEL
Title (en)
BOAT WITH RETRACTABLE KEEL
Publication
Application
Priority
- DE 3501892 A 19850122
- DE 3515090 A 19850426
Abstract (en)
[origin: US4690089A] A boat with a raisable and lowerable keel is proposed, which can be constructed as a swivel, lifting or ballast drop keel. The keels are fixed to tensioning members either directly or via cables. The tensioning members can be spiral springs, which run in the lifting keel box and are guided in the interior of the lifting keel to the lower end thereof. If the lifting keel is lowered, the spiral springs are tensioned, so that only relatively limited forces are required for raising by means of a spindle (FIG 1).
IPC 1-7
IPC 8 full level
B63B 41/00 (2006.01)
CPC (source: EP US)
B63B 41/00 (2013.01 - EP US); B63B 2035/009 (2013.01 - EP US); B63B 2041/006 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH FR GB IT LI NL SE
DOCDB simple family (publication)
EP 0189154 A1 19860730; EP 0189154 B1 19890104; DE 3515090 A1 19860724; DE 3515090 C2 19880609; US 4690089 A 19870901
DOCDB simple family (application)
EP 86100626 A 19860118; DE 3515090 A 19850426; US 82107786 A 19860121