| 摘要 |
<p>A sash frame is locked to a stationary jamb by movable locking elements connected to an operating rod and cooperating with stationary locking elements. Both types of locking elements have at least one recess, one projection and at least one lateral support extension alongside the respective recess or projection. The recesses and projections are so constructed and arranged that they have a respective central axis extending in parallel to a frame plane defined by the jamb and sash frame in the closed state. The lateral support extensions have surfaces facing each other and extending substantially perpendicularly to the frame plate. The operating rod carrying the movable locking elements may be guided in a groove in the sash frame or in the jamb, whereby the stationary locking elements are connected to the jamb or to the sash frame respectively.</p> |
