EP 3119670 A1 20170125 - WATERSKI WITH IMPROVED TORSIONAL CHARACTERISTICS
Title (en)
WATERSKI WITH IMPROVED TORSIONAL CHARACTERISTICS
Title (de)
WASSERSKI MIT VERBESSERTEN TORSIONSEIGENSCHAFTEN
Title (fr)
SKI NAUTIQUE PRÉSENTANT DE MEILLEURES CARACTÉRISTIQUES DE TORSION
Publication
Application
Priority
- RS P20140130 A 20140321
- RS 2015000008 W 20150319
Abstract (en)
[origin: WO2015142204A1] A water ski with improved torsional characteristics delimited on the upper side by the upper surface (2), on the bottom side by a concave surface (3) and on the sides by curvilinear sidewalls (7). The ski has a tip (4) at the front side and a tail (5) on the rear side. On the central part of the ski (1), on the upper surface (2), a longitudinal groove (6) is provided which dept and width reduce torsional and flexural stiffness of the central part of the ski (1) in the extent considerably favourable for a skier. The width of the groove (6) is 30 to 80% of the width of the ski (1), preferably 40 to 50% of the width of the ski (1), and the depth of the groove (6) is 20 to 95% of the thickness of the ski (1), preferably 80 to 95% thickness of the ski (1). The groove (6) alters torsional characteristics of the central part of the ski (1) and therewith makes water skiing easier.
IPC 8 full level
B63B 35/81 (2006.01)
CPC (source: EP US)
B63B 32/30 (2020.02 - EP US)
Citation (search report)
See references of WO 2015142204A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
WO 2015142204 A1 20150924; WO 2015142204 A4 20151223; EP 3119670 A1 20170125; RS 20140130 A1 20141231; RS 54394 B1 20160428; US 2017101165 A1 20170413
DOCDB simple family (application)
RS 2015000008 W 20150319; EP 15717672 A 20150319; RS P20140130 A 20140321; US 201515127779 A 20150319