Patent ID: 7182368

Claim:
A supporting leg for a vehicle transporting exchangeable containers for the deposition of an exchangeable container onto a horizontal base, comprising two telescoping tubes and a pneumatic drive for retracting and extending the tubes wherein bearing parts ( 520 ) comprising a horizontal bearing surface are configured on the inner extendible tube ( 52 ), and an engagement part ( 60 ) with horizontal bearing surfaces, which engages the bearing parts ( 520 ), is located on the outer tube ( 51 ), and is elastically biased from a disengaged position to an engagement position and is fixed in a frictional manner on the outer tube ( 51 ), characterized in that the inner extendible tube ( 52 ) is connected through a block ( 53 ) and a rod ( 54 ) with a piston rod ( 50 ) of the pneumatic drive ( 31 ), in an outer area of the inner extendible tube ( 52 ), a semicircular recess ( 530 ) is provided for reception of a semicircular projection ( 540 ) on the rod ( 54 ), and the rod ( 54 ) is shifted out of a position in which the semicircular recess is received in the semicircular projection, and the engagement part ( 60 ) is shifted out of its engagement position, allowing a relative movement between the tubes ( 51 , 52 ), in the inward and outward movement, respectively, of the piston rod ( 50 ).