Patent ID: 7578078

Claim:
Snowplough blade with an adjustable width, comprising: a first blade (L 1 ), supported stationary by a frame (S) for suspension and coupling to an operative vehicle (O); a second blade (L 2 ), slidingly connected to said first blade (L 1 ) by mutual coupling means, and operated by actuating means (A) connected to said suspension frame (S), said second blade body being movable with respect to said first blade (L 1 ) between a retracted position (R), in which a snow-removing surface of said snowplough blade (L) is at a minimum width, and an extreme advanced position (EA), in which the snow-removing surface of said snowplough blade (L) is at a maximum width, the snow-removing surface formed by said first blade and said second blade (L 1 , L 2 ), being arranged one beside the other, said second blade (L 2 ) being situated in front of said first blade (L 1 ), the second blade (L 2 ) having a width greater than or equal to a width of the first blade, and in that the operation of the second blade (L 2 ) to said extreme advanced position (EA) determines the degree of sliding leftwards translation of the second blade with respect to said first blade (L 1 ), and in that the snow-removing surface of the snowplough blade is formed only by the second blade when the second blade is in the retracted position (R), said first blade (L 1 ) including a tubular cross-beam ( 1 ) connected to said suspension and coupling frame (S) and whose inner space is occupied at least partially by said actuating means (A), said actuating means (A) including a hydraulic jack housed inside said tubular cross-beam ( 1 ), functionally interposed between the tubular cross-beam ( 1 ) and said second blade (L 2 ).