A manually releasable coupling device for connecting an elongate operator means with a frame or main frame member of a window and a pivotal, chain opener operated window with such a coupling device

摘要

A manually releasable coupling device for connecting an elongate operator means (2) with a frame or main frame member of a window comprises a first coupling member (3) for connection with a free end of the operator means (2) and a second coupling member (6-10) designed for mounting in or on the frame or main frame member. The first coupling member is a flat disc-shaped element (3) with a substantially keyhole-shaped recess 85), while the second coupling member comprises a shaft section (6) for mounting in a bore in the frame member or the main frame member in connection with a turning handle (7). The shaft section (6) has a local constriction (8) for releasable engagement with the keyhole-shaped recess (5) in the disc-shaped element (3). With a view to allowing manual closing of the window under surmounting of sealing pressure, the shaft section may be eccentric relative to the rotational axis of the turning handle. IMAGE