(19)
(11) EP 2 069 194 A1

(12)

(43) Date of publication:
17.06.2009 Bulletin 2009/25

(21) Application number: 07825077.6

(22) Date of filing: 10.09.2007
(51) International Patent Classification (IPC): 
B63H 5/10(2006.01)
B63H 3/02(2006.01)
(86) International application number:
PCT/IB2007/002586
(87) International publication number:
WO 2008/032167 (20.03.2008 Gazette 2008/12)
(84) Designated Contracting States:
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

(30) Priority: 15.09.2006 IT MI20061759

(71) Applicant: Calzoni S.r.l.
40012 Calderara di Reno BO (IT)

(72) Inventor:
  • GHIGNONE, Stefano
    40012 Calderara di Reno (BO) (IT)

(74) Representative: Lanzoni, Luciano 
Via Goito 18
40126 Bologna
40126 Bologna (IT)

   


(54) PROPULSION UNIT COMPRISING TWO COAXIAL CONTRA-ROTATING PROPELLERS