| 摘要 |
A sealed unit for a hydraulic remote control system comprises a flattened tube (10) of flexible material having its ends sealed and having opposite side walls joined along a weld line (12) so that end regions (26, 28) occupying the full width of the tube are interconnected by a central region (24) of reduced width. The tube (10) contains sufficient hydraulic liquid to ensure that, when one end region (26, 28) of the tube (10) is substantially flattened, the other end region (28, 26) of the tube (10) is substantially distended by the liquid. |
