The friction reducing mechanism has two carriers (1) with two legs connected with each other in a spaced apart manner over two axes. A rear part (2) is pivotably arranged at each leg, and has a contact surface (21) which is bordered by two lateral walls. T...

The device has two brackets (1,2) that are connected with each other in a tilting manner, where a bracket has an implementation for a clamping strap. A role is arranged on rotating axis (3) between the brackets. Another bracket is formed as a double T-prof...