| 摘要 |
A friction hinge e.g. for a sash window, comprises a pivoting member (34) coupled to a fixed channel member 32 by an arrangement of stays. A restrictor blocking device (120) is securable in one or more predetermined blocking positions in the channel member to enable users to predetermine variably the extent to which the window can be opened. The blocking device (120) may be removably received in the channel. A locating abutment leg 100 is provided at the proximal end of the pivoting member (34) to assist correct positioning of the window sash relative to the pivoting member during installation. |
