| 摘要 |
<p>A catch for sliding or hinged doors, windows, grilles of a swing opening member such as a door, window etc. having a catch for preventing unauthorised opening of the door etc. The catch has inter-engaging projections which are mounted on flexible shafts, if the sliding members are prised apart, the flexible shafts deform such that the projections keep engaged and prevent unauthorised opening of the sliding members.</p> |
