| 摘要 |
A window stay (100) for mounting a window sash in a window frame incorporates a safety catch comprising a locking arm (10) pivotally connected to a part (6) of the window stay which moves away from a frame mounting member (3) on opening of the window. The locking arm is releasably couplable to the frame mounting member to restrict the extent of opening of the stay. The locking arm, after release to enable unrestricted opening of the stay, may recouple to the frame mounting member on subsequent closing of the stay so that the extent of opening of the stay is restricted on next opening of the stay, until the locking arm is again released. The stay comprises a long arm 2, a short arm 1 and a link arm 50. One end of the long arm is pivotally mounted to a sliding joint, which allows sliding movement along the frame mounting member sufficiently to allow the stay to open in excess of 90 degrees between the sash and frame mounting members. |
