| 摘要 |
A hinge has first and second hinge members (10, 11) interconnected by an axle (24) that allows relative rotation between them. Each hinge member (10, 11) has screw holes (13, 50) allowing the hinge member (10, 11) to be connected to a leaf or a frame. The screw holes (50) of one hinge member are protected by a cover (56) that can only be removed when the hinge members (10, 11) have a specific relative disposition. This provides a security feature. |
