US Patent 7770943 Window or door having an electromechanical locking mechanism

A window or door including a circumferential blind frame and a leaf with a surface element is provided, which can be pivoted about one or more axes in relation to the blind frame, as well as including fittings, located between the leaf and the blind frame, which are used for moving the leaf in relation to the blind frame. Electromechanically actuated locking elements are provided for locking the leaf into the blind frame. Each locking element has its own electromechanical drive, and/or the locking elements are configured such that, when the window is closed, they are displaced in relation to the pane plane, thus pressing the leaf perpendicularly against the blind frame with a predetermined contact force.