EP 2032225 A1 20090311 - A FLYING TOY SUPPORTED BY A BIROTOR WHOSE BLADES ARE PARTIALLY FLEXIBLE
Title (en)
A FLYING TOY SUPPORTED BY A BIROTOR WHOSE BLADES ARE PARTIALLY FLEXIBLE
Title (de)
FLUGSPIELZEUG MIT EINEM BIROTOR MIT TEILWEISE FLEXIBLEN ROTORBLÄTTERN
Title (fr)
JOUET VOLANT SOUTENU PAR UN BIROTOR DONT LES PALES SONT PARTIELLEMENT FLEXIBLES
Publication
Application
Priority
- EP 2007005605 W 20070620
- IT TO20060459 A 20060623
Abstract (en)
[origin: WO2007147639A1] A flying toy suitable for being raised and then maintained in flight by the wind action, and controlled and maneuvered by means of an anchorage cable in a manner similar to that of a kite, that is provided with a birotor (1-6), and wherein the blades (1-4) of each rotor are partially flexible. The birotor is composed of two superimposed and coaxial rotors (1-6) and a synchronization mechanism (13) which obliges said rotors to effect symmetrical counter-rotations. Each blade (1-4) of each rotor comprises a substantially rigid proximal portion (1 ) whose cross section has the shape and the inclination incidence suggested by the laws of the aerodynamic, and comprises a distal portion (3) having a noticeable capability of undergoing flexional deformations. The flexible distal portion (3) may have a cross section identical or similar to the cross section of the rigid proximal portion (1 ), or a cross section simplified with respect to the rigid proximal portion (1). The flexible distal portion (3) may form an extension of the rigid proximal portion (1 ) or be pivoted to the rigid proximal portion (1 ) around an axis (4) at least approximately parallel to the rotor axis, whereby the distal portion (3) of the blade can orientate itself with respect to the proximal portion (1 ).
IPC 8 full level
A63H 27/04 (2006.01)
CPC (source: EP US)
A63H 27/04 (2013.01 - EP); A63H 27/082 (2013.01 - EP US); A63H 27/12 (2013.01 - EP)
Citation (search report)
See references of WO 2007147639A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR
Designated extension state (EPC)
AL BA HR MK RS
DOCDB simple family (publication)
WO 2007147639 A1 20071227; EP 2032225 A1 20090311; IT TO20060459 A1 20071224
DOCDB simple family (application)
EP 2007005605 W 20070620; EP 07764834 A 20070620; IT TO20060459 A 20060623