| 主权项 |
1. A lifting device capable of being actuated by a flowable medium, with a main carrier which forms a first cavity, with a first lifting element which is arranged at least locally inside this first cavity and which is movable in two mutually opposed directions of movement with respect to this cavity, with a first supply opening, in order to supply the flowable medium to the first cavity, wherein the first lifting element is moved in the first direction of movement (R1) by a supply of the flowable medium into the first cavity, wherein the main carrier has a second cavity which is arranged in a manner fixed in terms of movement with respect to the first cavity, and a second lifting element which is arranged at least locally inside this second cavity and which is movable in the two mutually opposed directions of movement (R1, R2) with respect to this cavity, with a second supply opening in order to supply the flowable medium to the second cavity, wherein the second lifting element is moved in the second direction of movement (R2) by a supply of the flowable medium into the first cavity. |
