| 摘要 |
A support assembly (200) and method is provided for suspending lightweight tools or other objects, such as hairdryers and the like. The assembly includes a drum (1) baised to retract a cord (2) by a spring (4) that provides support and in particular embodiments, electrical power to the object suspended. In addition during winding and unwinding the cord enters and exits helical path (204), i.e. engages and disengages the drum (1) at entry/exit point (206). The entry/exit point (206) and spring (4) are axially stationary relative to one another during winding and unwinding. Elevation of the object may be adjusted within a predetermined range of motion. The assembly exerts an upward force on the object that varies depending upon the elevation. The assembly is provided with low friction and low inertia, so that an object may be rapidly and easily moved between various elevations with little effort and little drag. |
