| 摘要 |
A device for an interlocking extension of a table leg where the extension is to occur in sequence with the raising or lowering of a separate operative table. The innovative in the invention is that, on the changing of the operative table, two surfaces (3 and 4) change in relation to each other. The change is achieved by a drive cylinder 5 with hydraulic liquid. The drive cylinder and a pressure cylinder (8) form with a tube (9), a communicating duct. When the drive cylinder's valve is drawn out, the hydraulic fluid is pressed out in the drive cylinder so that drawing and outward pressure becomes substantially of equal measure. Multiple hydraulic systems can be coupled in parallel.<IMAGE> |
