Pretensioning component and working method for a window or a sliding window-door

摘要

The biasing component has a power transmission component that is contacted with a wing (2) of a window device (100), and another power transmission component is connected with a frame (1). A mechanically powered biasing element is connected to the power transmission components to cause the force acting in the direction of an enlargement of the gap (2a) between wing and frame. An independent claim is included for a method for operating window or door device.