Patent ID: 8505929

Claim:
(FIGS. 9 C, 10 A, 11 A) In a snowmobile having two skis, each ski comprising rotation means transversally disposed about an axis ( 27 , 55 ) of said ski, a retractable wheel device disposed to effect contact with the ground when on an internal side of either ski, said device comprising: a triangular body ( 90 )( FIG. 11A ) installed in a first plane and comprising a first extremity comprising a rotating part ( 43 , FIG. 10A ) comprising means of rotation disposed perpendicularly ( 51 , FIG. 9A ) ( 38 , FIGS. 1 &7 ) of said first plane, said means of rotation comprising a rotative male-female part ( 43 ) moving around a male-female center axle ( 55 ); said triangular body comprising a remote end ( 50 ) comprising a hub ( 52 ) substantially perpendicular to said first plane and intended to receive a wheel ( 68 ); said hub being connected with said rotating part by a rigid arm ( 90 ); a third extremity of said triangular body comprising means to apply a rocking movement with regard to said first extremity for making it revolve, said third extremity being radially located with regard to a pivot center ( 55 ), thereby allowing the displacement of a circumferential push from 0 to 120°.