Patent ID: 7540822

Claim:
A toroidal transmission including a support member ( 12 ) rotatably supporting a power transmission roller ( 11 ) being supported at at least one bearing location ( 91 , 92 ), by support levers ( 26 , 27 ) so as to be pivotable about an axis X-X and displaceable in the direction of the axis X-X, toric disks disposed opposite each other and in rolling contact with said power transmission roller ( 11 ), and an adjusting unit ( 93 ) for displacing said support member ( 12 ) in the direction of the axis X-X, said adjusting unit ( 93 ) having a piston ( 39 ) which is disposed in a bush ( 90 ) and is drive-connected to the support member ( 12 ) the piston ( 39 ) having a piston surface ( 40 ) to which a pressure medium can be applied from at least one working space ( 48 ), a bush ( 90 ) mounted in said casing and having a first contact region ( 95 ) with the piston ( 39 ), said support member ( 12 ) including a recess ( 97 ) in the area of which a second contact region ( 96 ) between the bush ( 90 ) and the piston ( 39 ) is formed, said bush ( 90 ) being supported such that it is immoveable in the direction of the axis X-X with respect to a hydraulic casing 42 and forms a boundary of a working space ( 48 ) in the area arranged between the first and second contact regions ( 95 , 96 ).