| 摘要 |
The frames are designed to balance by pivoting around a vertical axis or by swinging around a horizontal axis and allowing maintenance of the external faces of the joinery and are characterised in that they comprise cut-outs 1a, 1b, 1c, 1d, 1e or 1f defining a first opening frame element 2a, 2b, 2c, 2d, 2e or 2f integrated with the fixed frame using hinges or hinge plates 5 and at least a second opening frame 3a, 3b, 3c, 3d, 3e or 3f integrated with the said first frame using hinges or hinge plates 5', allowing it to pivot in relation to its line of connection with the said first frame 1a, 1b, 1c, 1d, 1e, 1f, the said second frame working in conjunction with a locking device carried on the fixed frame to ensure the balance of the device in all opening positions. <IMAGE>
|
