Apparatus for treating containers advancing along a linear direction

An apparatus for treating containers advancing along a linear direction, said apparatus comprising:

• a first linear guide developing parallel to said linear direction and being fixedly located in a first environment that is a controlled-contamination environment;
• a carriage rotatably coupled to said first linear guide;
• a first supporting element for supporting one container by a neck of the container, said first supporting element being integrally mounted on the carriage;
• a second linear guide developing parallel to said linear direction and being fixedly located in a second environment;
• a slider slidably coupled to the second linear guide, said slider and said carriage being magnetically or electromagnetically coupled;
• and
• at least one separation wall for separating the first environment from the second environment, said first linear guide being arranged at a first predefined distance from said at least one separation wall;
• wherein said carriage comprises:
• a framework having a stand developing towards the separation wall;
• a plurality of wheels rotatably mounted on the framework;
• a case supported by the stand, said case being magnetically or electromagnetically coupled to said slider;
• wherein the first linear guide comprises a first rail and a second rail which are mutually parallel, said plurality of wheels comprising a first pair of wheels rotatably coupled to said first rail and a second pair of wheels rotatably coupled to said second rail;
• and
• wherein each wheel of said first pair of wheels is a double flange wheel having a groove, said first rail comprising an edge developing parallel to the linear direction from which two inclined surfaces originate, the edge of the first rail fitting in the groove of corresponding wheels of the first pair of wheels.