| 摘要 |
A mattress profiling device has a back rest 2 and leg/thigh 3 raising portions moved by a single actuator 1 via linkwork 13, 11 for the leg part and cam 6 for the back part until the leg part is fully extended and a cam portion 7 clears the back part. Thereafter, the back part only extends further as the actuator continues to extend (fig 5). |
