| 摘要 |
A device including a substantially rectilinear axial member or body (3) and two separate groups (4, 5) each including a plurality of flexible arms (6) of substantially the same length arranged in an operative configuration and each extending along a generatrix of a roughly conical tapered envelope coaxial with said axial member, as well as a device (9), located on said axial member, in which the ends of the arms meet. In said operative configuration, the free arm ends (8) roughly define a circle lying in a plane that is substantially perpendicular to the axial member, and corresponding to the periphery of the theoretical base of the tapered envelope. |
