| 摘要 |
The device for achieving working movements embodied by this invention consists of two or more moving tubes (1 ,2), inside of which is a flexible pressurisable container (6) whose lateral expansion is prevented. The lateral expansion of the container (6) is prevented by the threads of a coil spring (5), preferably made of steel, that surround the container (6) inside the tubes (1 ,2). The invention can be applied as a pushing device, wherein the tube sections move telescopically or as a joint, in which between the moving tubes (1 ,2) are one or more joint sections, from which the tubes (1 ,2) can be turned relative to each other. |
